QP is an event-driven, RTOS-like, active object framework for microcontrollers, such as mbed. The QP framework provides thread-safe execution of active objects (concurrent state machines) and support both manual and automatic coding of UML statecharts in readable, production-quality C or C++. Automatic code generation of QP code is supported by the free QM modeling tool.
Dependents: qp_hangman qp_dpp qp_blinky
QP/C++ (Quantum Platform in C++) is a lightweight, open source active object (actor) framework for building responsive and modular real-time embedded applications as systems of asynchronous event-driven active objects (actors). The QP/C++ framework is a member of a larger family consisting of QP/C++, QP/C, and QP-nano frameworks, which are all strictly quality controlled, thoroughly documented, and available under GPLv3 with a special Exception for mbed (see http://www.state-machine.com/licensing/QP-mbed_GPL_Exception.txt).
The behavior of active objects is specified in QP/C++ by means of hierarchical state machines (UML statecharts). The framework supports manual coding of UML state machines in C++ as well as automatic code generation by means of the free QM modeling tool (http://www.state-machine.com/qm).
Please see the "QP/C++ Reference Manual" (http://www.state-machine.com/qpcpp) for more information.
qp.h
- Committer:
- QL
- Date:
- 2011-02-09
- Revision:
- 0:064c79e7311a
- Child:
- 4:156463fbfae6
File content as of revision 0:064c79e7311a:
////////////////////////////////////////////////////////////////////////////// // Product: QP/C++ // Last Updated for QP ver: 4.1.06 (modified to fit in one file) // Date of the Last Update: Jan 26, 2011 // // Q u a n t u m L e a P s // --------------------------- // innovating embedded systems // // Copyright (C) 2002-2011 Quantum Leaps, LLC. All rights reserved. // // This software may be distributed and modified under the terms of the GNU // General Public License version 2 (GPL) as published by the Free Software // Foundation and appearing in the file GPL.TXT included in the packaging of // this file. Please note that GPL Section 2[b] requires that all works based // on this software must also be made publicly available under the terms of // the GPL ("Copyleft"). // // Alternatively, this software may be distributed and modified under the // terms of Quantum Leaps commercial licenses, which expressly supersede // the GPL and are specifically designed for licensees interested in // retaining the proprietary status of their code. // // Contact information: // Quantum Leaps Web site: http://www.quantum-leaps.com // e-mail: info@quantum-leaps.com ////////////////////////////////////////////////////////////////////////////// #ifndef qp_h #define qp_h // "qevent.h" ================================================================ /// \brief QEvent class and basic macros used by all QP components. /// /// This header file must be included, perhaps indirectly, in all modules /// (*.cpp files) that use any component of QP/C++ (such as QEP, QF, or QK). ////////////////////////////////////////////////////////////////////////////// /// \brief The current QP version number /// /// \return version of the QP as a hex constant constant 0xXYZZ, where X is /// a 1-digit major version number, Y is a 1-digit minor version number, and /// ZZ is a 2-digit release number. #define QP_VERSION 0x4106 #ifndef Q_ROM /// \brief Macro to specify compiler-specific directive for placing a /// constant object in ROM. /// /// Many compilers for Harvard-architecture MCUs provide non-stanard /// extensions to support placement of objects in different memories. /// In order to conserve the precious RAM, QP uses the Q_ROM macro for /// all constant objects that can be allocated in ROM. /// /// To override the following empty definition, you need to define the /// Q_ROM macro in the qep_port.h header file. Some examples of valid /// Q_ROM macro definitions are: __code (IAR 8051 compiler), code (Keil /// Cx51 compiler), PROGMEM (gcc for AVR), __flash (IAR for AVR). #define Q_ROM #endif #ifndef Q_ROM_VAR // if NOT defined, provide the default definition /// \brief Macro to specify compiler-specific directive for accessing a /// constant object in ROM. /// /// Many compilers for MCUs provide different size pointers for /// accessing objects in various memories. Constant objects allocated /// in ROM (see #Q_ROM macro) often mandate the use of specific-size /// pointers (e.g., far pointers) to get access to ROM objects. The /// macro Q_ROM_VAR specifies the kind of the pointer to be used to access /// the ROM objects. /// /// To override the following empty definition, you need to define the /// Q_ROM_VAR macro in the qep_port.h header file. An example of valid /// Q_ROM_VAR macro definition is: __far (Freescale HC(S)08 compiler). #define Q_ROM_VAR #endif #ifndef Q_ROM_BYTE /// \brief Macro to access a byte allocated in ROM /// /// Some compilers for Harvard-architecture MCUs, such as gcc for AVR, do /// not generate correct code for accessing data allocated in the program /// space (ROM). The workaround for such compilers is to explictly add /// assembly code to access each data element allocated in the program /// space. The macro Q_ROM_BYTE() retrieves a byte from the given ROM /// address. /// /// The Q_ROM_BYTE() macro should be defined for the compilers that /// cannot handle correctly data allocated in ROM (such as the gcc). /// If the macro is left undefined, the default definition simply returns /// the argument and lets the compiler generate the correct code. #define Q_ROM_BYTE(rom_var_) (rom_var_) #endif #ifndef Q_SIGNAL_SIZE /// \brief The size (in bytes) of the signal of an event. Valid values: /// 1, 2, or 4; default 1 /// /// This macro can be defined in the QEP port file (qep_port.h) to /// configure the ::QSignal type. When the macro is not defined, the /// default of 1 byte is chosen. #define Q_SIGNAL_SIZE 1 #endif #if (Q_SIGNAL_SIZE == 1) /// \brief QSignal represents the signal of an event. /// /// The relationship between an event and a signal is as follows. A signal /// in UML is the specification of an asynchronous stimulus that triggers /// reactions [<A HREF="http://www.omg.org/docs/ptc/03-08-02.pdf">UML /// document ptc/03-08-02</A>], and as such is an essential part of an /// event. (The signal conveys the type of the occurrence-what happened?) /// However, an event can also contain additional quantitative information /// about the occurrence in form of event parameters. Please refer to the /// document /// <A HREF="http://www.quantum-leaps.com/devzone/Recipe_IntroHSM.pdf"> /// Brief Introduction to UML State Machines</A>) for more information /// about state machine concepts. typedef uint8_t QSignal; #elif (Q_SIGNAL_SIZE == 2) typedef uint16_t QSignal; #elif (Q_SIGNAL_SIZE == 4) typedef uint32_t QSignal; #else #error "Q_SIGNAL_SIZE defined incorrectly, expected 1, 2, or 4" #endif ////////////////////////////////////////////////////////////////////////////// /// \brief QEvent base class. /// /// QEvent represents events without parameters and serves as the base class /// for derivation of events with parameters. /// /// \note All data members of the QEvent class must remain public to keep it /// an AGGREGATE. Therefore, the attribute QEvent::dynamic_ cannot be /// declared private. /// /// The following example illustrates how to add an event parameter by /// inheriting from the QEvent class. /// \include qep_qevent.cpp struct QEvent { QSignal sig; ///< signal of the event instance uint8_t dynamic_; ///< attributes of a dynamic event (0 for static event) }; ////////////////////////////////////////////////////////////////////////////// /// helper macro to calculate static dimension of a 1-dim array \a array_ #define Q_DIM(array_) (sizeof(array_) / sizeof(array_[0])) // "qep.h" =================================================================== /// \brief QEP/C++ platform-independent public interface. /// /// This header file must be included directly or indirectly /// in all modules (*.cpp files) that use QEP/C++. ////////////////////////////////////////////////////////////////////////////// /// \brief Provides miscellaneous QEP services. class QEP { public: /// \brief get the current QEP version number string /// /// \return version of the QEP as a constant 6-character string of the /// form x.y.zz, where x is a 1-digit major version number, y is a /// 1-digit minor version number, and zz is a 2-digit release number. static char const Q_ROM * Q_ROM_VAR getVersion(void); }; ////////////////////////////////////////////////////////////////////////////// /// \brief Type returned from a state-handler function typedef uint8_t QState; /// \brief pointer to state-handler function typedef QState (*QStateHandler)(void *me, QEvent const *e); ////////////////////////////////////////////////////////////////////////////// /// \brief Finite State Machine base class /// /// QFsm represents a traditional non-hierarchical Finite State Machine (FSM) /// without state hierarchy, but with entry/exit actions. /// /// QFsm is also a base structure for the ::QHsm class. /// /// \note QFsm is not intended to be instantiated directly, but rather serves /// as the base class for derivation of state machines in the application /// code. /// /// The following example illustrates how to derive a state machine class /// from QFsm. /// \include qep_qfsm.cpp class QFsm { protected: QStateHandler m_state; ///< current active state (state-variable) public: /// \brief virtual destructor virtual ~QFsm(); /// \brief Performs the second step of FSM initialization by triggering /// the top-most initial transition. /// /// The argument \a e is constant pointer to ::QEvent or a class /// derived from ::QEvent. /// /// \note Must be called only ONCE before QFsm::dispatch() /// /// The following example illustrates how to initialize a FSM, and /// dispatch events to it: /// \include qep_qfsm_use.cpp void init(QEvent const *e = (QEvent *)0); /// \brief Dispatches an event to a FSM /// /// Processes one event at a time in Run-to-Completion (RTC) fashion. /// The argument \a e is a constant pointer the ::QEvent or a /// class derived from ::QEvent. /// /// \note Must be called after QFsm::init(). /// /// \sa example for QFsm::init() void dispatch(QEvent const *e); protected: /// \brief Protected constructor of a FSM. /// /// Performs the first step of FSM initialization by assigning the /// initial pseudostate to the currently active state of the state /// machine. /// /// \note The constructor is protected to prevent direct instantiating /// of QFsm objects. This class is intended for subclassing only. /// /// \sa The ::QFsm example illustrates how to use the QHsm constructor /// in the constructor initializer list of the derived state machines. QFsm(QStateHandler initial) : m_state(initial) {} }; ////////////////////////////////////////////////////////////////////////////// /// \brief Hierarchical State Machine base class /// /// QHsm represents a Hierarchical Finite State Machine (HSM). QHsm derives /// from the ::QFsm class and extends the capabilities of a basic FSM /// with state hierarchy. /// /// \note QHsm is not intended to be instantiated directly, but rather serves /// as the base structure for derivation of state machines in the application /// code. /// /// The following example illustrates how to derive a state machine class /// from QHsm. /// \include qep_qhsm.cpp class QHsm { protected: QStateHandler m_state; ///< current active state (state-variable) public: /// \brief virtual destructor virtual ~QHsm(); /// \brief Performs the second step of HSM initialization by triggering /// the top-most initial transition. /// /// \param e constant pointer ::QEvent or a class derived from ::QEvent /// \note Must be called only ONCE before QHsm::dispatch() /// /// The following example illustrates how to initialize a HSM, and /// dispatch events to it: /// \include qep_qhsm_use.cpp void init(QEvent const *e = (QEvent *)0); /// \brief Dispatches an event to a HSM /// /// Processes one event at a time in Run-to-Completion (RTC) fashion. /// The argument \a e is a constant pointer the ::QEvent or a /// class derived from ::QEvent. /// /// \note Must be called after QHsm::init(). /// /// \sa example for QHsm::init() void dispatch(QEvent const *e); /// \brief Tests if a given state is part of the current active state /// configuratioin /// /// \param state is a pointer to the state handler function, e.g., /// &QCalc::on. uint8_t isIn(QStateHandler state); protected: /// \brief Protected constructor of a HSM. /// /// Performs the first step of HSM initialization by assigning the /// initial pseudostate to the currently active state of the state /// machine. /// /// \note The constructor is protected to prevent direct instantiating /// of QHsm objects. This class is intended for subclassing only. /// /// \sa The ::QHsm example illustrates how to use the QHsm constructor /// in the constructor initializer list of the derived state machines. /// \sa QFsm::QFsm() QHsm(QStateHandler initial) : m_state(initial) {} /// \brief the top-state. /// /// QHsm::top() is the ultimate root of state hierarchy in all HSMs /// derived from ::QHsm. This state handler always returns (QSTATE)0, /// which means that it "handles" all events. /// /// \sa Example of the QCalc::on() state handler. static QState top(QHsm *me, QEvent const *e); }; /// \brief Value returned by a non-hierarchical state-handler function when /// it ignores (does not handle) the event. #define Q_RET_IGNORED ((QState)1) /// \brief The macro returned from a non-hierarchical state-handler function /// when it ignores (does not handle) the event. /// /// You call that macro after the return statement (return Q_IGNORED();) /// /// \include qepn_qfsm.cpp #define Q_IGNORED() (Q_RET_IGNORED) /// \brief Value returned by a state-handler function when it handles /// the event. #define Q_RET_HANDLED ((QState)0) /// \brief Value returned by a state-handler function when it handles /// the event. /// /// You call that macro after the return statement (return Q_HANDLED();) /// Q_HANDLED() can be used both in the FSMs and HSMs. /// /// \include qepn_qfsm.cpp #define Q_HANDLED() (Q_RET_HANDLED) /// \brief Value returned by a state-handler function when it takes a /// regular state transition. #define Q_RET_TRAN ((QState)2) /// \brief Designates a target for an initial or regular transition. /// Q_TRAN() can be used both in the FSMs and HSMs. /// /// \include qepn_qtran.cpp //lint -e960 -e1924 ignore MISRA Rule 42 (comma operator) and C-style cast #define Q_TRAN(target_) \ (me->m_state = (QStateHandler)(target_), Q_RET_TRAN) /// \brief Value returned by a state-handler function when it cannot /// handle the event. #define Q_RET_SUPER ((QState)3) /// \brief Designates the superstate of a given state in an HSM. /// /// \include qep_qhsm.cpp //lint -e960 -e1924 ignore MISRA Rule 42 (comma operator) and C-style cast #define Q_SUPER(super_) \ (me->m_state = (QStateHandler)(super_), Q_RET_SUPER) ////////////////////////////////////////////////////////////////////////////// /// \brief QEP reserved signals. enum QReservedSignals { Q_ENTRY_SIG = 1, ///< signal for entry actions Q_EXIT_SIG, ///< signal for exit actions Q_INIT_SIG, ///< signal for nested initial transitions Q_USER_SIG ///< signal to offset user signals }; // "qequeue.h" =============================================================== /// \brief platform-independent event queue interface. /// /// This header file must be included in all QF ports that use native QF /// event queue implementation. Also, this file is needed when the "raw" /// thread-safe queues are used for communication between active objects /// and non-framework entities, such as ISRs, device drivers, or legacy /// code. #ifndef QF_EQUEUE_CTR_SIZE /// \brief The size (in bytes) of the ring-buffer counters used in the /// native QF event queue implementation. Valid values: 1, 2, or 4; /// default 1. /// /// This macro can be defined in the QF port file (qf_port.h) to /// configure the ::QEQueueCtr type. Here the macro is not defined so the /// default of 1 byte is chosen. #define QF_EQUEUE_CTR_SIZE 1 #endif #if (QF_EQUEUE_CTR_SIZE == 1) /// \brief The data type to store the ring-buffer counters based on /// the macro #QF_EQUEUE_CTR_SIZE. /// /// The dynamic range of this data type determines the maximum length /// of the ring buffer managed by the native QF event queue. typedef uint8_t QEQueueCtr; #elif (QF_EQUEUE_CTR_SIZE == 2) typedef uint16_t QEQueueCtr; #elif (QF_EQUEUE_CTR_SIZE == 4) typedef uint32_t QEQueueCtr; #else #error "QF_EQUEUE_CTR_SIZE defined incorrectly, expected 1, 2, or 4" #endif ////////////////////////////////////////////////////////////////////////////// /// \brief Native QF Event Queue class /// /// This structure describes the native QF event queue, which can be used as /// the event queue for active objects, or as a simple "raw" event queue for /// thread-safe event passing among non-framework entities, such as ISRs, /// device drivers, or other third-party components. /// /// The native QF event queue is configured by defining the macro /// #QF_EQUEUE_TYPE as ::QEQueue in the specific QF port header file. /// /// The ::QEQueue structure contains only data members for managing an event /// queue, but does not contain the storage for the queue buffer, which must /// be provided externally during the queue initialization. /// /// The event queue can store only event pointers, not the whole events. The /// internal implementation uses the standard ring-buffer plus one external /// location that optimizes the queue operation for the most frequent case /// of empty queue. /// /// The ::QEQueue structure is used with two sets of functions. One set is for /// the active object event queue, which needs to block the active object /// task when the event queue is empty and unblock it when events are posted /// to the queue. The interface for the native active object event queue /// consists of the following functions: QActive::postFIFO_(), /// QActive::postLIFO_(), and QActive::get_(). Additionally the function /// QEQueue_init() is used to initialize the queue. /// /// The other set of functions, uses this structure as a simple "raw" event /// queue to pass events between entities other than active objects, such as /// ISRs. The "raw" event queue is not capable of blocking on the get() /// operation, but is still thread-safe because it uses QF critical section /// to protect its integrity. The interface for the "raw" thread-safe queue /// consists of the following functions: QEQueue::postFIFO(), /// QEQueue::postLIFO(), and QEQueue::get(). Additionally the function /// QEQueue::init() is used to initialize the queue. /// /// \note Most event queue operations (both the active object queues and /// the "raw" queues) internally use the QF critical section. You should be /// careful not to invoke those operations from other critical sections when /// nesting of critical sections is not supported. class QEQueue { private: /// \brief pointer to event at the front of the queue /// /// All incoming and outgoing events pass through the m_frontEvt location. /// When the queue is empty (which is most of the time), the extra /// m_frontEvt location allows to bypass the ring buffer altogether, /// greatly optimizing the performance of the queue. Only bursts of events /// engage the ring buffer. /// /// The additional role of this attribute is to indicate the empty status /// of the queue. The queue is empty if the m_frontEvt location is NULL. QEvent const *m_frontEvt; /// \brief pointer to the start of the ring buffer QEvent const **m_ring; /// \brief offset of the end of the ring buffer from the start of the /// buffer m_ring QEQueueCtr m_end; /// \brief offset to where next event will be inserted into the buffer QEQueueCtr m_head; /// \brief offset of where next event will be extracted from the buffer QEQueueCtr m_tail; /// \brief number of free events in the ring buffer QEQueueCtr m_nFree; /// \brief minimum number of free events ever in the ring buffer. /// /// \note this attribute remembers the low-watermark of the ring buffer, /// which provides a valuable information for sizing event queues. /// \sa QF::getQueueMargin(). QEQueueCtr m_nMin; public: /// \brief Initializes the native QF event queue /// /// The parameters are as follows: \a qSto[] is the ring buffer storage, /// \a qLen is the length of the ring buffer in the units of event- /// pointers. /// /// \note The actual capacity of the queue is qLen + 1, because of the /// extra location fornEvt_. void init(QEvent const *qSto[], QEQueueCtr qLen); /// \brief "raw" thread-safe QF event queue implementation for the /// First-In-First-Out (FIFO) event posting. You can call this function /// from any task context or ISR context. Please note that this function /// uses internally a critical section. /// /// \note The function raises an assertion if the native QF queue becomes /// full and cannot accept the event. /// /// \sa QEQueue::postLIFO(), QEQueue::get() void postFIFO(QEvent const *e); /// \brief "raw" thread-safe QF event queue implementation for the /// First-In-First-Out (FIFO) event posting. You can call this function /// from any task context or ISR context. Please note that this function /// uses internally a critical section. /// /// \note The function raises an assertion if the native QF queue becomes /// full and cannot accept the event. /// /// \sa QEQueue::postLIFO(), QEQueue::get() void postLIFO(QEvent const *e); /// \brief "raw" thread-safe QF event queue implementation for the /// Last-In-First-Out (LIFO) event posting. /// /// \note The LIFO policy should be used only with great caution because /// it alters order of events in the queue. /// \note The function raises an assertion if the native QF queue becomes /// full and cannot accept the event. You can call this function from /// any task context or ISR context. Please note that this function uses /// internally a critical section. /// /// \sa QEQueue::postFIFO(), QEQueue::get() QEvent const *get(void); /// \brief "raw" thread-safe QF event queue operation for /// obtaining the number of free entries still available in the queue. /// /// \note This operation needs to be used with caution because the /// number of free entries can change unexpectedly. The main intent for /// using this operation is in conjunction with event deferral. In this /// case the queue is accessed only from a single thread (by a single AO), /// so the number of free entries cannot change unexpectedly. /// /// \sa QActive::defer(), QActive::recall() QEQueueCtr getNFree(void) const { return m_nFree; } private: friend class QF; friend class QActive; }; // "qmpool.h" ================================================================ /// \brief platform-independent memory pool interface. /// /// This header file must be included in all QF ports that use native QF /// memory pool implementation. ////////////////////////////////////////////////////////////////////////////// #ifndef QF_MPOOL_SIZ_SIZE /// \brief macro to override the default ::QMPoolSize size. /// Valid values 1, 2, or 4; default 2 #define QF_MPOOL_SIZ_SIZE 2 #endif #if (QF_MPOOL_SIZ_SIZE == 1) /// \brief The data type to store the block-size based on the macro /// #QF_MPOOL_SIZ_SIZE. /// /// The dynamic range of this data type determines the maximum size /// of blocks that can be managed by the native QF event pool. typedef uint8_t QMPoolSize; #elif (QF_MPOOL_SIZ_SIZE == 2) typedef uint16_t QMPoolSize; #elif (QF_MPOOL_SIZ_SIZE == 4) typedef uint32_t QMPoolSize; #else #error "QF_MPOOL_SIZ_SIZE defined incorrectly, expected 1, 2, or 4" #endif ////////////////////////////////////////////////////////////////////////////// #ifndef QF_MPOOL_CTR_SIZE /// \brief macro to override the default QMPoolCtr size. /// Valid values 1, 2, or 4; default 2 #define QF_MPOOL_CTR_SIZE 2 #endif #if (QF_MPOOL_CTR_SIZE == 1) /// \brief The data type to store the block-counter based on the macro /// #QF_MPOOL_CTR_SIZE. /// /// The dynamic range of this data type determines the maximum number /// of blocks that can be stored in the pool. typedef uint8_t QMPoolCtr; #elif (QF_MPOOL_CTR_SIZE == 2) typedef uint16_t QMPoolCtr; #elif (QF_MPOOL_CTR_SIZE == 4) typedef uint32_t QMPoolCtr; #else #error "QF_MPOOL_CTR_SIZE defined incorrectly, expected 1, 2, or 4" #endif ////////////////////////////////////////////////////////////////////////////// /// \brief Native QF memory pool class /// /// This class describes the native QF memory pool, which can be used as /// the event pool for dynamic event allocation, or as a fast, deterministic /// fixed block-size heap for any other objects in your application. /// /// The ::QMPool structure contains only data members for managing a memory /// pool, but does not contain the pool storage, which must be provided /// externally during the pool initialization. /// /// The native QF event pool is configured by defining the macro /// #QF_EPOOL_TYPE_ as QEQueue in the specific QF port header file. class QMPool { private: /// start of the memory managed by this memory pool void *m_start; /// end of the memory managed by this memory pool void *m_end; /// linked list of free blocks void *m_free; /// maximum block size (in bytes) QMPoolSize m_blockSize; /// total number of blocks QMPoolCtr m_nTot; /// number of free blocks remaining QMPoolCtr m_nFree; /// minimum number of free blocks ever present in this pool /// /// \note this attribute remembers the low watermark of the pool, /// which provides a valuable information for sizing event pools. /// \sa QF::getPoolMargin(). QMPoolCtr m_nMin; public: /// \brief Initializes the native QF event pool /// /// The parameters are as follows: \a poolSto is the pool storage, /// \a poolSize is the size of the pool storage in bytes, and /// \a blockSize is the block size of this pool. /// /// The caller of this method must make sure that the \a poolSto pointer /// is properly aligned. In particular, it must be possible to efficiently /// store a pointer at the location pointed to by \a poolSto. /// Internally, the QMPool::init() function rounds up the block size /// \a blockSize so that it can fit an integer number of pointers. /// This is done to achieve proper alignment of the blocks within the /// pool. /// /// \note Due to the rounding of block size the actual capacity of the /// pool might be less than (\a poolSize / \a blockSize). You can check /// the capacity of the pool by calling the QF::getPoolMargin() function. void init(void *poolSto, uint32_t poolSize, QMPoolSize blockSize); /// \brief Obtains a memory block from a memory pool. /// /// The only parameter \a me is a pointer to the ::QMPool from which the /// block is requested. The function returns a pointer to the allocated /// memory block or NULL if no free blocks are available. /// /// A allocated block must be returned to the same pool from which it has /// been allocated. /// /// This function can be called from any task level or ISR level. /// /// \note The memory pool \a me must be initialized before any events can /// be requested from it. Also, the QMPool::get() function uses internally /// a QF critical section, so you should be careful not to call it from /// within a critical section when nesting of critical section is not /// supported. /// /// \sa QMPool::put() void *get(void); /// \brief Returns a memory block back to a memory pool. /// /// /// This function can be called from any task level or ISR level. /// /// \note The block must be allocated from the same memory pool to which /// it is returned. The QMPool::put() function raises an assertion if the /// returned pointer to the block points outside of the original memory /// buffer managed by the memory pool. Also, the QMPool::put() function /// uses internally a QF critical section, so you should be careful not /// to call it from within a critical section when nesting of critical /// section is not supported. /// /// \sa QMPool::get() void put(void *b); /// \brief return the fixed block-size of the blocks managed by this pool QMPoolSize getBlockSize(void) const { return m_blockSize; } private: friend class QF; }; // "qpset.h" ================================================================= /// \brief platform-independent priority sets of 8 or 64 elements. /// /// This header file must be included in those QF ports that use the /// cooperative multitasking QF scheduler or the QK. // external declarations of QF lookup tables used inline extern uint8_t const Q_ROM Q_ROM_VAR QF_log2Lkup[256]; extern uint8_t const Q_ROM Q_ROM_VAR QF_pwr2Lkup[65]; extern uint8_t const Q_ROM Q_ROM_VAR QF_invPwr2Lkup[65]; extern uint8_t const Q_ROM Q_ROM_VAR QF_div8Lkup[65]; ////////////////////////////////////////////////////////////////////////////// /// \brief Priority Set of up to 8 elements for building various schedulers, /// but also useful as a general set of up to 8 elements of any kind. /// /// The priority set represents the set of active objects that are ready to /// run and need to be considered by scheduling processing. The set is capable /// of storing up to 8 priority levels. class QPSet8 { protected: ////////////////////////////////////////////////////////////////////////// /// \brief bimask representing elements of the set uint8_t m_bits; public: /// \brief the function evaluates to TRUE if the priority set is empty, /// which means that no active objects are ready to run. uint8_t isEmpty(void) volatile { return (uint8_t)(m_bits == (uint8_t)0); } /// \brief the function evaluates to TRUE if the priority set has elements, /// which means that some active objects are ready to run. uint8_t notEmpty(void) volatile { return (uint8_t)(m_bits != (uint8_t)0); } /// \brief the function evaluates to TRUE if the priority set has the /// element \a n. uint8_t hasElement(uint8_t n) volatile { return (uint8_t)((m_bits & Q_ROM_BYTE(QF_pwr2Lkup[n])) != 0); } /// \brief insert element \a n into the set, n = 1..8 void insert(uint8_t n) volatile { m_bits |= Q_ROM_BYTE(QF_pwr2Lkup[n]); } /// \brief remove element \a n from the set, n = 1..8 void remove(uint8_t n) volatile { m_bits &= Q_ROM_BYTE(QF_invPwr2Lkup[n]); } /// \brief find the maximum element in the set, /// \note returns zero if the set is empty uint8_t findMax(void) volatile { return Q_ROM_BYTE(QF_log2Lkup[m_bits]); } friend class QPSet64; }; ////////////////////////////////////////////////////////////////////////////// /// \brief Priority Set of up to 64 elements for building various schedulers, /// but also useful as a general set of up to 64 elements of any kind. /// /// The priority set represents the set of active objects that are ready to /// run and need to be considered by scheduling processing. The set is capable /// of storing up to 64 priority levels. /// /// The priority set allows to build cooperative multitasking schedulers /// to manage up to 64 tasks. It is also used in the Quantum Kernel (QK) /// preemptive scheduler. /// /// The inherited 8-bit set is used as the 8-elemtn set of of 8-bit subsets /// Each bit in the super.bits set represents a subset (8-elements) /// as follows: \n /// bit 0 in this->m_bits is 1 when subset[0] is not empty \n /// bit 1 in this->m_bits is 1 when subset[1] is not empty \n /// bit 2 in this->m_bits is 1 when subset[2] is not empty \n /// bit 3 in this->m_bits is 1 when subset[3] is not empty \n /// bit 4 in this->m_bits is 1 when subset[4] is not empty \n /// bit 5 in this->m_bits is 1 when subset[5] is not empty \n /// bit 6 in this->m_bits is 1 when subset[6] is not empty \n /// bit 7 in this->m_bits is 1 when subset[7] is not empty \n class QPSet64 : public QPSet8 { /// \brief subsets representing elements in the set as follows: \n /// m_subset[0] represent elements 1..8 \n /// m_subset[1] represent elements 9..16 \n /// m_subset[2] represent elements 17..24 \n /// m_subset[3] represent elements 25..32 \n /// m_subset[4] represent elements 33..40 \n /// m_subset[5] represent elements 41..48 \n /// m_subset[6] represent elements 49..56 \n /// m_subset[7] represent elements 57..64 \n QPSet8 m_subset[8]; public: /// \brief the function evaluates to TRUE if the priority set has the /// element \a n. uint8_t hasElement(uint8_t n) volatile { return m_subset[Q_ROM_BYTE(QF_div8Lkup[n])].QPSet8::hasElement(n); } /// \brief insert element \a n into the set, n = 1..64 void insert(uint8_t n) volatile { QPSet8::insert(Q_ROM_BYTE(QF_div8Lkup[n]) + 1); m_subset[Q_ROM_BYTE(QF_div8Lkup[n])].QPSet8::insert(n); } /// \brief remove element \a n from the set, n = 1..64 void remove(uint8_t n) volatile { if ((m_subset[Q_ROM_BYTE(QF_div8Lkup[n])].m_bits &= Q_ROM_BYTE(QF_invPwr2Lkup[n])) == (uint8_t)0) { QPSet8::remove(Q_ROM_BYTE(QF_div8Lkup[n]) + 1); } } /// \brief find the maximum element in the set, /// \note returns zero if the set is empty uint8_t findMax(void) volatile { if (m_bits != (uint8_t)0) { uint8_t n = (uint8_t)(Q_ROM_BYTE(QF_log2Lkup[m_bits]) - 1); return (uint8_t)(Q_ROM_BYTE(QF_log2Lkup[m_subset[n].m_bits]) + (n << 3)); } else { return (uint8_t)0; } } }; ////////////////////////////////////////////////////////////////////////////// // Kernel selection based on QK_PREEMPTIVE // #ifdef QK_PREEMPTIVE /// \brief This macro defines the type of the event queue used for the /// active objects. /// /// \note This is just an example of the macro definition. Typically, you need /// to define it in the specific QF port file (qf_port.h). In case of QK, /// which always depends on the native QF queue, this macro is defined at the /// level of the platform-independent interface qk.h. #define QF_EQUEUE_TYPE QEQueue #if defined(QK_TLS) || defined(QK_EXT_SAVE) /// \brief This macro defines the type of the OS-Object used for blocking /// the native QF event queue when the queue is empty /// /// In QK, the OS object is used to hold the per-thread flags, which might /// be used, for example, to rembember the thread attributes (e.g., /// if the thread uses a floating point co-processor). The OS object value /// is set on per-thread basis in QActive::start(). Later, the extended /// context switch macros (QK_EXT_SAVE() and QK_EXT_RESTORE()) might use /// the per-thread flags to determine what kind of extended context switch /// this particular thread needs (e.g., the thread might not be using the /// coprocessor or might be using a different one). #define QF_OS_OBJECT_TYPE uint8_t /// \brief This macro defines the type of the thread handle used for the /// active objects. /// /// The thread type in QK is the pointer to the thread-local storage (TLS) /// This thread-local storage can be set on per-thread basis in /// QActive::start(). Later, the QK scheduler, passes the pointer to the /// thread-local storage to the macro #QK_TLS. #define QF_THREAD_TYPE void * #endif /* QK_TLS || QK_EXT_SAVE */ #if (QF_MAX_ACTIVE <= 8) extern QPSet8 volatile QK_readySet_; ///< ready set of QK #else extern QPSet64 volatile QK_readySet_; ///< ready set of QK #endif extern uint8_t volatile QK_currPrio_; ///< current task/interrupt priority extern uint8_t volatile QK_intNest_; ///< interrupt nesting level // QK active object queue implementation ..................................... /// \brief Platform-dependent macro defining how QF should block the calling /// task when the QF native queue is empty /// /// \note This is just an example of #QACTIVE_EQUEUE_WAIT_ for the QK-port /// of QF. QK never activates a task that has no events to process, so in this /// case the macro asserts that the queue is not empty. In other QF ports you // need to define the macro appropriately for the underlying kernel/OS you're /// using. #define QACTIVE_EQUEUE_WAIT_(me_) \ Q_ASSERT((me_)->m_eQueue.m_frontEvt != (QEvent *)0) /// \brief Platform-dependent macro defining how QF should signal the /// active object task that an event has just arrived. /// /// The macro is necessary only when the native QF event queue is used. /// The signaling of task involves unblocking the task if it is blocked. /// /// \note #QACTIVE_EQUEUE_SIGNAL_ is called from a critical section. /// It might leave the critical section internally, but must restore /// the critical section before exiting to the caller. /// /// \note This is just an example of #QACTIVE_EQUEUE_SIGNAL_ for the QK-port /// of QF. In other QF ports you need to define the macro appropriately for /// the underlying kernel/OS you're using. #define QACTIVE_EQUEUE_SIGNAL_(me_) \ QK_readySet_.insert((me_)->m_prio); \ if (QK_intNest_ == (uint8_t)0) { \ QK_SCHEDULE_(); \ } else ((void)0) /// \brief Platform-dependent macro defining the action QF should take /// when the native QF event queue becomes empty. /// /// \note #QACTIVE_EQUEUE_ONEMPTY_ is called from a critical section. /// It should not leave the critical section. /// /// \note This is just an example of #QACTIVE_EQUEUE_ONEMPTY_ for the QK-port /// of QF. In other QF ports you need to define the macro appropriately for /// the underlying kernel/OS you're using. #define QACTIVE_EQUEUE_ONEMPTY_(me_) \ QK_readySet_.remove((me_)->m_prio) // QK event pool operations .................................................. /// \brief This macro defines the type of the event pool used in this QF port. /// /// \note This is just an example of the macro definition. Typically, you need /// to define it in the specific QF port file (qf_port.h). In case of QK, /// which always depends on the native QF memory pool, this macro is defined /// at the level of the platform-independent interface qk.h. #define QF_EPOOL_TYPE_ QMPool /// \brief Platform-dependent macro defining the event pool initialization /// /// \note This is just an example of #QF_EPOOL_INIT_ for the QK-port of QF. /// In other QF ports you need to define the macro appropriately for the /// underlying kernel/OS you're using. #define QF_EPOOL_INIT_(p_, poolSto_, poolSize_, evtSize_) \ (p_).init(poolSto_, poolSize_, evtSize_) /// \brief Platform-dependent macro defining how QF should obtain the /// event pool block-size /// /// \note This is just an example of #QF_EPOOL_EVENT_SIZE_ for the QK-port /// of QF. In other QF ports you need to define the macro appropriately for /// the underlying kernel/OS you're using. #define QF_EPOOL_EVENT_SIZE_(p_) ((p_).getBlockSize()) /// \brief Platform-dependent macro defining how QF should obtain an event /// \a e_ from the event pool \a p_ /// /// \note This is just an example of #QF_EPOOL_GET_ for the QK-port of QF. /// In other QF ports you need to define the macro appropriately for the /// underlying kernel/OS you're using. #define QF_EPOOL_GET_(p_, e_) ((e_) = (QEvent *)(p_).get()) /// \brief Platform-dependent macro defining how QF should return an event /// \a e_ to the event pool \a p_ /// /// \note This is just an example of #QF_EPOOL_PUT_ for the QK-port of QF. /// In other QF ports you need to define the macro appropriately for the /// underlying kernel/OS you're using. #define QF_EPOOL_PUT_(p_, e_) ((p_).put(e_)) #ifndef QK_NO_MUTEX ////////////////////////////////////////////////////////////////////////// /// \brief QK Mutex type. /// /// QMutex represents the priority-ceiling mutex available in QK. /// \sa QK::mutexLock() /// \sa QK::mutexUnlock() typedef uint8_t QMutex; #endif // QK_NO_MUTEX ////////////////////////////////////////////////////////////////////////////// /// \brief QK services. /// /// This class groups together QK services. It has only static members and /// should not be instantiated. /// // \note The QK scheduler, QK priority, QK ready set, etc. belong conceptually /// to the QK class (as static class members). However, to avoid C++ potential /// name-mangling problems in assembly language, these elements are defined /// outside of the QK class and use the extern "C" linkage specification. /// class QK { public: /// \brief get the current QK version number string /// /// \return version of the QK as a constant 6-character string of the /// form x.y.zz, where x is a 1-digit major version number, y is a /// 1-digit minor version number, and zz is a 2-digit release number. /// /// \sa QK::getPortVersion() static char const Q_ROM * Q_ROM_VAR getVersion(void); /// \brief Returns the QK-port version. /// /// This function returns constant version string in the format x.y.zz, /// where x (one digit) is the major version, y (one digit) is the minor /// version, and zz (two digits) is the maintenance release version. /// An example of the QK-port version string is "1.1.03". /// /// \sa QK::getVersion() static char const Q_ROM * Q_ROM_VAR getPortVersion(void); /// \brief QK idle callback (customized in BSPs for QK) /// /// QK::onIdle() is called continously by the QK idle loop. This callback /// gives the application an opportunity to enter a power-saving CPU mode, /// or perform some other idle processing. /// /// \note QK::onIdle() is invoked with interrupts unlocked and must also /// return with interrupts unlocked. /// /// \sa QF::onIdle() static void onIdle(void); #ifndef QK_NO_MUTEX /// \brief QK priority-ceiling mutex lock /// /// Lock the QK scheduler up to the priority level \a prioCeiling. /// // \note This function should be always paired with QK::mutexUnlock(). /// The code between QK::mutexLock() and QK::mutexUnlock() should be /// kept to the minimum. /// /// \include qk_mux.cpp static QMutex mutexLock(uint8_t prioCeiling); /// \brief QK priority-ceiling mutex unlock /// /// \note This function should be always paired with QK::mutexLock(). /// The code between QK::mutexLock() and QK::mutexUnlock() should be /// kept to the minimum. /// /// \include qk_mux.cpp static void mutexUnlock(QMutex mutex); #endif // QK_NO_MUTEX }; extern "C" { /// \brief QK initialization /// /// QK_init() is called from QF_init() in qk.cpp. This function is /// defined in the QK ports. void QK_init(void); // QK scheduler and extended scheduler #ifndef QF_INT_KEY_TYPE void QK_schedule_(void); // QK scheduler void QK_scheduleExt_(void); // QK extended scheduler #define QK_SCHEDULE_() QK_schedule_() #else /// \brief The QK scheduler /// /// \note The QK scheduler must be always called with the interrupts /// locked and unlocks interrupts internally. /// /// The signature of QK_schedule_() depends on the policy of locking and /// unlocking interrupts. When the interrupt lock key is not used /// (#QF_INT_KEY_TYPE undefined), the signature is as follows: \n /// void QK_schedule_(void); \n /// /// However, when the interrupt key lock is used (#QF_INT_KEY_TYPE /// defined), the signature is different: \n /// void QK_schedule_(QF_INT_KEY_TYPE intLockKey); \n /// /// For the internal use, these differences are hidden by the macro /// #QK_SCHEDULE_. void QK_schedule_(QF_INT_KEY_TYPE intLockKey); /// \brief The QK extended scheduler for interrupt context /// /// \note The QK extended exscheduler must be always called with the /// interrupts locked and unlocks interrupts internally. /// /// The signature of QK_scheduleExt_() depends on the policy of locking /// and unlocking interrupts. When the interrupt lock key is not used /// (#QF_INT_KEY_TYPE undefined), the signature is as follows: \n /// void QK_scheduleExt_(void); \n /// /// However, when the interrupt key lock is used (#QF_INT_KEY_TYPE /// defined), the signature is different: \n /// void QK_scheduleExt_(QF_INT_KEY_TYPE intLockKey); \n void QK_scheduleExt_(QF_INT_KEY_TYPE intLockKey); // QK extended scheduler /// #QF_INT_KEY_TYPE is defined, this internal macro invokes /// QK_schedule_() passing the key variable as the parameter. Otherwise /// QK_schedule_() is invoked without parameters. /// \sa #QK_INT_LOCK, #QK_INT_UNLOCK #define QK_SCHEDULE_() QK_schedule_(intLockKey_) #endif } // extern "C" #else // QK_PREEMPTIVE // "qvanilla.h" ============================================================== #define QF_EQUEUE_TYPE QEQueue // native event queue operations #define QACTIVE_EQUEUE_WAIT_(me_) \ Q_ASSERT((me_)->m_eQueue.m_frontEvt != (QEvent *)0) #define QACTIVE_EQUEUE_SIGNAL_(me_) \ QF_readySet_.insert((me_)->m_prio) #define QACTIVE_EQUEUE_ONEMPTY_(me_) \ QF_readySet_.remove((me_)->m_prio) // native QF event pool operations #define QF_EPOOL_TYPE_ QMPool #define QF_EPOOL_INIT_(p_, poolSto_, poolSize_, evtSize_) \ (p_).init(poolSto_, poolSize_, evtSize_) #define QF_EPOOL_EVENT_SIZE_(p_) ((p_).getBlockSize()) #define QF_EPOOL_GET_(p_, e_) ((e_) = (QEvent *)(p_).get()) #define QF_EPOOL_PUT_(p_, e_) ((p_).put(e_)) #if (QF_MAX_ACTIVE <= 8) extern QPSet8 volatile QF_readySet_; ///< QF-ready set of active objects #else extern QPSet64 volatile QF_readySet_; ///< QF-ready set of active objects #endif #endif // QK_PREEMPTIVE // qf.h (QF platform-independent public interface) =========================== ////////////////////////////////////////////////////////////////////////////// #if (QF_MAX_ACTIVE < 1) || (63 < QF_MAX_ACTIVE) #error "QF_MAX_ACTIVE not defined or out of range. Valid range is 1..63" #endif ////////////////////////////////////////////////////////////////////////////// #ifndef QF_EVENT_SIZ_SIZE /// \brief Default value of the macro configurable value in qf_port.h #define QF_EVENT_SIZ_SIZE 2 #endif #if (QF_EVENT_SIZ_SIZE == 1) /// \brief The data type to store the block-size defined based on /// the macro #QF_EVENT_SIZ_SIZE. /// /// The dynamic range of this data type determines the maximum block /// size that can be managed by the pool. typedef uint8_t QEventSize; #elif (QF_EVENT_SIZ_SIZE == 2) typedef uint16_t QEventSize; #elif (QF_EVENT_SIZ_SIZE == 4) typedef uint32_t QEventSize; #else #error "QF_EVENT_SIZ_SIZE defined incorrectly, expected 1, 2, or 4" #endif ////////////////////////////////////////////////////////////////////////////// #ifndef QF_ACTIVE_SUPER_ ////////////////////////////////////////////////////////////////////////// /// \brief The macro defining the base class for QActive. /// /// By default, the ::QActive class is derived from ::QHsm. However, /// if the macro QF_ACTIVE_SUPER_ is defined, QActive is derived from /// QF_ACTIVE_SUPER_. /// /// Clients might choose, for example, to define QF_ACTIVE_SUPER_ as QFsm /// to avoid the 1-2KB overhead of the hierarchical event processor. /// /// Clients might also choose to define QF_ACTIVE_SUPER_ as their own /// completely customized class that has nothing to do with QHsm or QFsm. /// The QF_ACTIVE_SUPER_ class must provide member functions init() and /// dispatch(), consistent with the signatures of QHsm and QFsm. But /// the implementatin of these functions is completely open. #define QF_ACTIVE_SUPER_ QHsm /// \brief The argument of the base class' constructor. #define QF_ACTIVE_STATE_ QStateHandler #endif class QEQueue; // forward declaration /// \brief Base class for derivation of application-level active object /// classes. /// /// QActive is the base class for derivation of active objects. Active objects /// in QF are encapsulated tasks (each embedding a state machine and an event /// queue) that communicate with one another asynchronously by sending and /// receiving events. Within an active object, events are processed /// sequentially in a run-to-completion (RTC) fashion, while QF encapsulates /// all the details of thread-safe event exchange and queuing. /// /// \note QActive is not intended to be instantiated directly, but rather /// serves as the base class for derivation of active objects in the /// application code. /// /// The following example illustrates how to derive an active object from /// QActive. /// \include qf_qactive.cpp /// /// \sa #QF_ACTIVE_SUPER_ defines the base class for QActive class QActive : public QF_ACTIVE_SUPER_ { private: /// \brief OS-dependent event-queue type. /// /// The type of the queue depends on the underlying operating system or /// a kernel. Many kernels support "message queues" that can be adapted /// to deliver QF events to the active object. Alternatively, QF provides /// a native event queue implementation that can be used as well. /// /// The native QF event queue is configured by defining the macro /// #QF_EQUEUE_TYPE as ::QEQueue. QF_EQUEUE_TYPE m_eQueue; public: #ifdef QF_OS_OBJECT_TYPE /// \brief OS-dependent per-thread object. /// /// This data might be used in various ways, depending on the QF port. /// In some ports m_osObject is used to block the calling thread when /// the native QF queue is empty. In other QF ports the OS-dependent /// object might be used differently. QF_OS_OBJECT_TYPE m_osObject; #endif #ifdef QF_THREAD_TYPE /// \brief OS-dependent representation of the thread of the active /// object. /// /// This data might be used in various ways, depending on the QF port. /// In some ports m_thread is used store the thread handle. In other ports /// m_thread can be the pointer to the Thread-Local-Storage (TLS). QF_THREAD_TYPE m_thread; #endif /// \brief QF priority associated with the active object. /// \sa QActive::start() uint8_t m_prio; /// \brief The Boolean loop variable determining if the thread routine /// of the active object is running. /// /// This flag is only used with the traditional loop-structured thread /// routines. Clearing this flag breaks out of the thread loop, which is /// often the cleanest way to terminate the thread. The following example /// illustrates the thread routine for Win32: /// \include qf_run.cpp uint8_t m_running; public: /// \brief Starts execution of an active object and registers the object /// with the framework. /// /// The function takes six arguments. /// \a prio is the priority of the active object. QF allows you to start /// up to 63 active objects, each one having a unique priority number /// between 1 and 63 inclusive, where higher numerical values correspond /// to higher priority (urgency) of the active object relative to the /// others. /// \a qSto[] and \a qLen arguments are the storage and size of the event /// queue used by this active object. /// \a stkSto and \a stkSize are the stack storage and size in bytes. /// Please note that a per-active object stack is used only when the /// underlying OS requies it. If the stack is not required, or the /// underlying OS allocates the stack internally, the \a stkSto should be /// NULL and/or \a stkSize should be 0. /// \a ie is an optional initialization event that can be used to pass /// additional startup data to the active object. (Pass NULL if your /// active object does not expect the initialization event). /// /// \note This function is strongly OS-dependent and must be defined in /// the QF port to a particular platform. /// /// The following example shows starting of the Philosopher object when a /// per-task stack is required: /// \include qf_start.cpp void start(uint8_t prio, QEvent const *qSto[], uint32_t qLen, void *stkSto = (void *)0, uint32_t stkSize = 0, QEvent const *ie = (QEvent *)0); /// \brief Posts an event \a e directly to the event queue of the acitve /// object \a me using the First-In-First-Out (FIFO) policy. /// /// Direct event posting is the simplest asynchronous communication method /// available in QF. The following example illustrates how the Philosopher /// active obejct posts directly the HUNGRY event to the Table active /// object. \include qf_post.cpp /// /// \note The producer of the event (Philosopher in this case) must only /// "know" the recipient (Table) by a generic (QActive *QDPP_table) /// pointer, but the specific definition of the Table class is not /// required. /// /// \note Direct event posting should not be confused with direct event /// dispatching. In contrast to asynchronous event posting through event /// queues, direct event dispatching is synchronous. Direct event /// dispatching occurs when you call QHsm::dispatch(), or QFsm::dispatch() /// function. void postFIFO(QEvent const *e); /// \brief Posts an event directly to the event queue of the active object /// \a me using the Last-In-First-Out (LIFO) policy. /// /// \note The LIFO policy should be used only with great caution because /// it alters order of events in the queue. /// \sa QActive::postFIFO() void postLIFO(QEvent const *e); /// \brief Traditional loop-structured thread routine for an active object /// /// This function is only used when QF is ported to a traditional /// RTOS/Kernel. QActive::run() is structured as a typical endless loop, /// which blocks on the event queue get() operation of an active object. /// When an event becomes available, it's dispatched to the active /// object's state machine and after this recycled with QF::gc(). /// The loop might optionally use the QActive::m_running flag to terminate /// and cause QActive::run() to return which is often the cleanest way to /// terminate the thread. void run(void); /// \brief Get an event from the event queue of an active object. /// /// This function is used internally by a QF port to extract events from /// the event queue of an active object. This function depends on the /// event queue implementation and is sometimes implemented in the QF port /// (qf_port.cpp file). Depending on the underlying OS or kernel, the /// function might block the calling thread when no events are available. /// /// \note QActive::get_() is public because it often needs to be called /// from thread-run routines with difficult to foresee signature (so /// declaring friendship with such function(s) is not possible.) /// /// \sa QActive::postFIFO(), QActive::postLIFO() QEvent const *get_(void); protected: /// \brief protected constructor /// /// Performs the first step of active object initialization by assigning /// the initial pseudostate to the currently active state of the state /// machine. /// /// \note The constructor is protected to prevent direct instantiation /// of QActive objects. This class is intended only for derivation /// (abstract class). QActive(QF_ACTIVE_STATE_ initial) : QF_ACTIVE_SUPER_(initial) { } /// \brief Stops execution of an active object and removes it from the /// framework's supervision. /// /// The preferred way of calling this function is from within the active /// object that needs to stop (that's why this function is protected). /// In other words, an active object should stop itself rather than being /// stopped by some other entity. This policy works best, because only /// the active object itself "knows" when it has reached the appropriate /// state for the shutdown. /// /// \note This function is strongly OS-dependent and should be defined in /// the QF port to a particular platform. This function is optional in /// embedded systems where active objects never need to be stopped. void stop(void); /// \brief Subscribes for delivery of signal \a sig to the active object /// /// This function is part of the Publish-Subscribe event delivery /// mechanism available in QF. Subscribing to an event means that the /// framework will start posting all published events with a given signal /// \a sig to the event queue of the active object. /// /// The following example shows how the Table active object subscribes /// to three signals in the initial transition: /// \include qf_subscribe.cpp /// /// \sa QF::publish(), QActive::unsubscribe(), and /// QActive::unsubscribeAll() void subscribe(QSignal sig) const; /// \brief Un-subscribes from the delivery of signal \a sig to the /// active object. /// /// This function is part of the Publish-Subscribe event delivery /// mechanism available in QF. Un-subscribing from an event means that /// the framework will stop posting published events with a given signal /// \a sig to the event queue of the active object. /// /// \note Due to the latency of event queues, an active object should NOT /// assume that a given signal \a sig will never be dispatched to the /// state machine of the active object after un-subscribing from that /// signal. The event might be already in the queue, or just about to be /// posted and the un-subscribe operation will not flush such events. /// /// \note Un-subscribing from a signal that has never been subscribed in /// the first place is considered an error and QF will rise an assertion. /// /// \sa QF::publish(), QActive::subscribe(), and QActive::unsubscribeAll() void unsubscribe(QSignal sig) const; /// \brief Defer an event to a given separate event queue. /// /// This function is part of the event deferral support. An active object /// uses this function to defer an event \a e to the QF-supported native /// event queue \a eq. QF correctly accounts for another outstanding /// reference to the event and will not recycle the event at the end of /// the RTC step. Later, the active object might recall one event at a /// time from the event queue. /// /// An active object can use multiple event queues to defer events of /// different kinds. /// /// \sa QActive::recall(), QEQueue void defer(QEQueue *eq, QEvent const *e); /// \brief Recall a deferred event from a given event queue. /// /// This function is part of the event deferral support. An active object /// uses this function to recall a deferred event from a given QF /// event queue. Recalling an event means that it is removed from the /// deferred event queue \a eq and posted (LIFO) to the event queue of /// the active object. /// /// QActive::recall() returns the pointer to the recalled event to the /// caller. The function returns NULL if no event has been recalled. /// /// An active object can use multiple event queues to defer events of /// different kinds. /// /// \sa QActive::defer(), QEQueue, QActive::postLIFO() QEvent const *recall(QEQueue *eq); public: /// \brief Un-subscribes from the delivery of all signals to the active /// object. /// /// This function is part of the Publish-Subscribe event delivery /// mechanism available in QF. Un-subscribing from all events means that /// the framework will stop posting any published events to the event /// queue of the active object. /// /// \note Due to the latency of event queues, an active object should NOT /// assume that no events will ever be dispatched to the state machine of /// the active object after un-subscribing from all events. /// The events might be already in the queue, or just about to be posted /// and the un-subscribe operation will not flush such events. Also, the /// alternative event-delivery mechanisms, such as direct event posting or /// time events, can be still delivered to the event queue of the active /// object. /// /// \sa QF::publish(), QActive::subscribe(), and QActive::unsubscribe() void unsubscribeAll(void) const; private: friend class QF; friend class QTimeEvt; #ifndef QF_INT_KEY_TYPE friend void QK_schedule_(void); friend void QK_scheduleExt_(void); #else friend void QK_schedule_(QF_INT_KEY_TYPE intLockKey); friend void QK_scheduleExt_(QF_INT_KEY_TYPE intLockKey); #endif }; ////////////////////////////////////////////////////////////////////////////// #ifndef QF_TIMEEVT_CTR_SIZE /// \brief macro to override the default QTimeEvtCtr size. /// Valid values 1, 2, or 4; default 2 #define QF_TIMEEVT_CTR_SIZE 2 #endif #if (QF_TIMEEVT_CTR_SIZE == 1) /// \brief type of the Time Event counter, which determines the dynamic /// range of the time delays measured in clock ticks. /// /// This typedef is configurable via the preprocessor switch /// #QF_TIMEEVT_CTR_SIZE. The other possible values of this type are /// as follows: \n /// uint8_t when (QF_TIMEEVT_CTR_SIZE == 1), and \n /// uint32_t when (QF_TIMEEVT_CTR_SIZE == 4). typedef uint8_t QTimeEvtCtr; #elif (QF_TIMEEVT_CTR_SIZE == 2) typedef uint16_t QTimeEvtCtr; #elif (QF_TIMEEVT_CTR_SIZE == 4) typedef uint32_t QTimeEvtCtr; #else #error "QF_TIMEEVT_CTR_SIZE defined incorrectly, expected 1, 2, or 4" #endif ////////////////////////////////////////////////////////////////////////////// /// \brief Time Event class /// /// Time events are special QF events equipped with the notion of time /// passage. The basic usage model of the time events is as follows. An /// active object allocates one or more QTimeEvt objects (provides the /// storage for them). When the active object needs to arrange for a timeout, /// it arms one of its time events to fire either just once (one-shot) or /// periodically. Each time event times out independently from the others, /// so a QF application can make multiple parallel timeout requests (from the /// same or different active objects). When QF detects that the appropriate /// moment has arrived, it inserts the time event directly into the /// recipient's event queue. The recipient then processes the time event just /// like any other event. /// /// Time events, as any other QF events derive from the ::QEvent base /// class. Typically, you will use a time event as-is, but you can also /// further derive more specialized time events from it by adding some more /// data members and/or specialized functions that operate on the specialized /// time events. /// /// Internally, the armed time events are organized into a bi-directional /// linked list. This linked list is scanned in every invocation of the /// QF::tick() function. Only armed (timing out) time events are in the list, /// so only armed time events consume CPU cycles. /// /// \note QF manages the time events in the function QF::tick(), which /// must be called periodically, preferably from the clock tick ISR. /// \note In this version of QF QTimeEvt objects should be allocated /// statically rather than dynamically from event pools. Currently, QF will /// not correctly recycle the dynamically allocated Time Events. class QTimeEvt : public QEvent { private: //// link to the previous time event in the list QTimeEvt *m_prev; /// link to the next time event in the list QTimeEvt *m_next; /// the active object that receives the time events. QActive *m_act; /// the internal down-counter of the time event. The down-counter /// is decremented by 1 in every QF_tick() invocation. The time event /// fires (gets posted or published) when the down-counter reaches zero. QTimeEvtCtr m_ctr; /// the interval for the periodic time event (zero for the one-shot /// time event). The value of the interval is re-loaded to the internal /// down-counter when the time event expires, so that the time event /// keeps timing out periodically. QTimeEvtCtr m_interval; public: /// \brief The Time Event constructor. /// /// The most important initialization performed in the constructor is /// assigning a signal to the Time Event. You can reuse the Time Event /// any number of times, but you cannot change the signal. /// This is because pointers to Time Events might still be held in event /// queues and changing signal could to hard-to-detect errors. /// /// The following example shows the use of QTimeEvt::QTimeEvt() /// constructor in the constructor initializer list of the Philosopher /// active object constructor that owns the time event /// \include qf_ctor.cpp QTimeEvt(QSignal s); /// \brief Arm a one-shot time event for direct event posting. /// /// Arms a time event to fire in \a nTicks clock ticks (one-shot time /// event). The time event gets directly posted (using the FIFO policy) /// into the event queue of the active object \a act. /// /// After posting, the time event gets automatically disarmed and can be /// reused for a one-shot or periodic timeout requests. /// /// A one-shot time event can be disarmed at any time by calling the /// QTimeEvt::disarm() function. Also, a one-shot time event can be /// re-armed to fire in a different number of clock ticks by calling the /// QTimeEvt::rearm() function. /// /// The following example shows how to arm a one-shot time event from a /// state machine of an active object: /// \include qf_state.cpp void postIn(QActive *act, QTimeEvtCtr nTicks) { m_interval = (uint16_t)0; arm_(act, nTicks); } /// \brief Arm a periodic time event for direct event posting. /// /// Arms a time event to fire every \a nTicks clock ticks (periodic time /// event). The time event gets directly posted (using the FIFO policy) /// into the event queue of the active object \a act. /// /// After posting, the time event gets automatically re-armed to fire /// again in the specified \a nTicks clock ticks. /// /// A periodic time event can be disarmed only by calling the /// QTimeEvt::disarm() function. After disarming, the time event can be /// reused for a one-shot or periodic timeout requests. /// /// \note An attempt to reuse (arm again) a running periodic time event /// raises an assertion. /// /// Also, a periodic time event can be re-armed to shorten or extend the /// current period by calling the QTimeEvt_rearm() function. After /// adjusting the current period, the periodic time event goes back /// timing out at the original rate. void postEvery(QActive *act, QTimeEvtCtr nTicks) { m_interval = nTicks; arm_(act, nTicks); } /// \brief Disarm a time event. /// /// The time event gets disarmed and can be reused. The function /// returns 1 (TRUE) if the time event was truly disarmed, that is, it /// was running. The return of 0 (FALSE) means that the time event was /// not truly disarmed because it was not running. The FALSE return is /// only possible for one-shot time events that have been automatically /// disarmed upon expiration. In this case the FALSE return means that /// the time event has already been posted or published and should be /// expected in the active object's state machine. uint8_t disarm(void); /// \brief Rearm a time event. /// /// The time event gets rearmed with a new number of clock ticks /// \a nTicks. This facility can be used to prevent a one-shot time event /// from expiring (e.g., a watchdog time event), or to adjusts the /// current period of a periodic time event. Rearming a periodic timer /// leaves the interval unchanged and is a convenient method to adjust the /// phasing of the periodic time event. /// /// The function returns 1 (TRUE) if the time event was running as it /// was re-armed. The return of 0 (FALSE) means that the time event was /// not truly rearmed because it was not running. The FALSE return is only /// possible for one-shot time events that have been automatically /// disarmed upon expiration. In this case the FALSE return means that /// the time event has already been posted or published and should be /// expected in the active object's state machine. uint8_t rearm(QTimeEvtCtr nTicks); // for backwards compatibility /// \brief Arm a one-shot time event for direct event posting (obsolete). /// /// This facility is now obsolete, please use \sa QTimeEvt::postIn(). void fireIn(QActive *act, QTimeEvtCtr nTicks) { postIn(act, nTicks); } /// \brief Arm a periodic time event for direct event posting (obsolete). /// /// This facility is now obsolete, please use \sa QTimeEvt::postEvery(). void fireEvery(QActive *act, QTimeEvtCtr nTicks) { postEvery(act, nTicks); } private: /// \brief Arm a time event (internal function to be used through macros /// only). /// /// \sa QTimeEvt::postIn(), QTimeEvt::postEvery(), /// \sa QTimeEvt::publishIn(), QTimeEvt::publishEvery() void arm_(QActive *act, QTimeEvtCtr nTicks); friend class QF; }; #if (QF_MAX_ACTIVE > 63) #error "QF_MAX_ACTIVE exceeds 63" #endif ////////////////////////////////////////////////////////////////////////////// /// \brief Subscriber List class /// /// This data type represents a set of active objects that subscribe to /// a given signal. The set is represented as an array of bits, where each /// bit corresponds to the unique priority of an active object. class QSubscrList { private: /// An array of bits representing subscriber active objects. Each bit /// in the array corresponds to the unique priority of the active object. /// The size of the array is determined of the maximum number of active /// objects in the application configured by the #QF_MAX_ACTIVE macro. /// For example, an active object of priority p is a subscriber if the /// following is true: ((m_bits[QF_div8Lkup[p]] & QF_pwr2Lkup[p]) != 0) /// /// \sa QF::psInit(), QF_div8Lkup, QF_pwr2Lkup, #QF_MAX_ACTIVE uint8_t m_bits[((QF_MAX_ACTIVE - 1) / 8) + 1]; friend class QF; friend class QActive; }; ////////////////////////////////////////////////////////////////////////////// /// \brief QF services. /// /// This class groups together QF services. It has only static members and /// should not be instantiated. class QF { public: /// \brief QF initialization. /// /// This function initializes QF and must be called exactly once before /// any other QF function. static void init(void); /// \brief Publish-subscribe initialization. /// /// This function initializes the publish-subscribe facilities of QF and /// must be called exactly once before any subscriptions/publications /// occur in the application. The arguments are as follows: \a subscrSto /// is a pointer to the array of subscriber-lists. \a maxSignal is the /// dimension of this array and at the same time the maximum signal that /// can be published or subscribed. /// /// The array of subscriber-lists is indexed by signals and provides /// mapping between the signals and subscirber-lists. The subscriber- /// lists are bitmasks of type ::QSubscrList, each bit in the bitmask /// corresponding to the unique priority of an active object. The size /// of the ::QSubscrList bitmask depends on the value of the /// #QF_MAX_ACTIVE macro. /// /// \note The publish-subscribe facilities are optional, meaning that /// you might choose not to use publish-subscribe. In that case calling /// QF::psInit() and using up memory for the subscriber-lists is /// unnecessary. /// /// \sa ::QSubscrList /// /// The following example shows the typical initialization sequence of /// QF: \include qf_main.cpp static void psInit(QSubscrList *subscrSto, QSignal maxSignal); /// \brief Event pool initialization for dynamic allocation of events. /// /// This function initializes one event pool at a time and must be called /// exactly once for each event pool before the pool can be used. /// The arguments are as follows: \a poolSto is a pointer to the memory /// block for the events. \a poolSize is the size of the memory block in /// bytes. \a evtSize is the block-size of the pool in bytes, which /// determines the maximum size of events that can be allocated from the /// pool. /// /// You might initialize one, two, and up to three event pools by making /// one, two, or three calls to the QF_poolInit() function. However, /// for the simplicity of the internal implementation, you must initialize /// event pools in the ascending order of the event size. /// /// Many RTOSes provide fixed block-size heaps, a.k.a. memory pools that /// can be used for QF event pools. In case such support is missing, QF /// provides a native QF event pool implementation. The macro /// #QF_EPOOL_TYPE_ determines the type of event pool used by a /// particular QF port. See class ::QMPool for more information. /// /// \note The actual number of events available in the pool might be /// actually less than (\a poolSize / \a evtSize) due to the internal /// alignment of the blocks that the pool might perform. You can always /// check the capacity of the pool by calling QF::getPoolMargin(). /// /// \note The dynamic allocation of events is optional, meaning that you /// might choose not to use dynamic events. In that case calling /// QF::poolInit() and using up memory for the memory blocks is /// unnecessary. /// /// \sa QF initialization example for QF::init() static void poolInit(void *poolSto, uint32_t poolSize, QEventSize evtSize); /// \brief Transfers control to QF to run the application. /// /// QF::run() is typically called from your startup code after you /// initialize the QF and start at least one active object with /// QActive::start(). Also, QF::start() call must precede the transfer /// of control to QF::run(), but some QF ports might call QF::start() /// from QF::run(). QF::run() typically never returns to the caller. /// /// \note This function is strongly platform-dependent and is not /// implemented in the QF, but either in the QF port or in the /// Board Support Package (BSP) for the given application. All QF ports /// must implement QF::run(). /// /// \note When the Quantum Kernel (QK) is used as the underlying real-time /// kernel for the QF, all platfrom dependencies are handled in the QK, so /// no porting of QF is necessary. In other words, you only need to /// recompile the QF platform-independent code with the compiler for your /// platform, but you don't need to provide any platform-specific /// implementation (so, no qf_port.cpp file is necessary). Moreover, QK /// implements the function QF::run() in a platform-independent way, /// in the modile qk.cpp. static void run(void); /// \brief Startup QF callback. /// /// The timeline for calling QF::onStartup() depends on the particular /// QF port. In most cases, QF::onStartup() is called from QF::run(), /// right before starting any multitasking kernel or the background loop. static void onStartup(void); /// \brief Cleanup QF callback. /// /// QF::onCleanup() is called in some QF ports before QF returns to the /// underlying operating system or RTOS. /// /// This function is strongly platform-specific and is not implemented in /// the QF but either in the QF port or in the Board Support Package (BSP) /// for the given application. Some QF ports might not require /// implementing QF::onCleanup() at all, because many embedded /// applications don't have anything to exit to. /// /// \sa QF::init() and QF::stop() static void onCleanup(void); #ifndef QF_INT_KEY_TYPE static void onIdle(void); // interrupt lock key NOT defined #else /// \brief QF idle callback (customized in BSPs for QF) /// /// QF::onIdle() is called by the non-preemptive scheduler built into QF /// when the framework detects that no events are available for active /// objects (the idle condition). This callback gives the application an /// opportunity to enter a power-saving CPU mode, or perform some other /// idle processing (such as Q-Spy output). /// /// \note QF::onIdle() is invoked with interrupts LOCKED because the idle /// condition can be asynchronously changed at any time by an interrupt. /// QF::onIdle() MUST unlock the interrupts internally, but not before /// putting the CPU into the low-power mode. (Ideally, unlocking /// interrupts and low-power mode should happen atomically). At the very /// least, the function MUST unlock interrupts, otherwise interrups will /// be locked permanently. /// /// \note QF::onIdle() is only used by the non-preemptive scheduler built /// into QF in the "bare metal" port, and is NOT used in any other ports. /// When QF is combined with QK, the QK idle loop calls a different /// function QK::onIdle(), with different semantics than QF::onIdle(). /// When QF is combined with a 3rd-party RTOS or kernel, the idle /// processing mechanism of the RTOS or kernal is used instead of /// QF::onIdle(). static void onIdle(QF_INT_KEY_TYPE intLockKey); // int. lock key defined #endif // QF_INT_KEY_TYPE /// \brief Function invoked by the application layer to stop the QF /// application and return control to the OS/Kernel. /// /// This function stops the QF application. After calling this function, /// QF attempts to gracefully stop the application. This graceful /// shutdown might take some time to complete. The typical use of this /// funcition is for terminating the QF application to return back to the /// operating system or for handling fatal errors that require shutting /// down (and possibly re-setting) the system. /// /// This function is strongly platform-specific and is not implemented in /// the QF but either in the QF port or in the Board Support Package (BSP) /// for the given application. Some QF ports might not require /// implementing QF::stop() at all, because many embedded application /// don't have anything to exit to. /// /// \sa QF::stop() and QF::onCleanup() static void stop(void); /// \brief Publish event to the framework. /// /// This function posts (using the FIFO policy) the event \a e it to ALL /// active object that have subscribed to the signal \a e->sig. /// This function is designed to be callable from any part of the system, /// including ISRs, device drivers, and active objects. /// /// In the general case, event publishing requires multi-casting the /// event to multiple subscribers. This happens in the caller's thread /// with the scheduler locked to prevent preemptions during the multi- /// casting process. (Please note that the interrupts are not locked.) static void publish(QEvent const *e); /// \brief Processes all armed time events at every clock tick. /// /// This function must be called periodically from a time-tick ISR or from /// the highest-priority task so that QF can manage the timeout events. /// /// \note The QF::tick() function is not reentrant meaning that it must /// run to completion before it is called again. Also, QF::tick() assumes /// that it never will get preempted by a task, which is always the case /// when it is called from an ISR or the highest-priority task. /// /// \sa ::QTimeEvt. /// /// The following example illustrates the call to QF::tick(): /// \include qf_tick.cpp static void tick(void); /// \brief Returns the QF version. /// /// This function returns constant version string in the format x.y.zz, /// where x (one digit) is the major version, y (one digit) is the minor /// version, and zz (two digits) is the maintenance release version. /// An example of the version string is "3.1.03". /// /// The following example illustrates the usage of this function: /// \include qf_version.cpp static char const Q_ROM * Q_ROM_VAR getVersion(void); /// \brief Returns the QF-port version. /// /// This function returns constant version string in the format x.y.zz, /// where x (one digit) is the major version, y (one digit) is the minor /// version, and zz (two digits) is the maintenance release version. /// An example of the QF-port version string is "1.1.03". /// /// \sa QF::getVersion() static char const Q_ROM * Q_ROM_VAR getPortVersion(void); /// \brief This function returns the margin of the given event pool. /// /// This function returns the margin of the given event pool \a poolId, /// where poolId is the ID of the pool initialized by the call to /// QF::poolInit(). The poolId of the first initialized pool is 1, the /// second 2, and so on. /// /// The returned pool margin is the minimal number of free blocks /// encountered in the given pool since system startup. /// /// \note Requesting the margin of an un-initialized pool raises an /// assertion in the QF. static uint32_t getPoolMargin(uint8_t poolId); /// \brief This function returns the margin of the given event queue. /// /// This function returns the margin of the given event queue of an active /// object with priority \a prio. (QF priorities start with 1 and go up to /// #QF_MAX_ACTIVE.) The margin is the minimal number of free events /// encountered in the given queue since system startup. /// /// \note QF::getQueueMargin() is available only when the native QF event /// queue implementation is used. Requesting the queue margin of an unused /// priority level raises an assertion in the QF. (A priority level /// becomes used in QF after the call to the QF::add_() function.) static uint32_t getQueueMargin(uint8_t prio); /// \brief Internal QF implementation of the dynamic event allocator. /// /// \note The application code should not call this function directly. /// Please use the macro #Q_NEW. static QEvent *new_(uint16_t evtSize, QSignal sig); /// \brief Allocate a dynamic event. /// /// This macro returns an event pointer cast to the type \a evtT_. The /// event is initialized with the signal \a sig. Internally, the macro /// calls the internal QF function QF::new_(), which always returns a /// valid event pointer. /// /// \note The internal QF function QF::new_() raises an assertion when /// the allocation of the event turns out to be impossible due to event /// pool depletion, or incorrect (too big) size of the requested event. /// /// The following example illustrates dynamic allocation of an event: /// \include qf_post.cpp #define Q_NEW(evtT_, sig_) ((evtT_ *)QF::new_(sizeof(evtT_), (sig_))) /// \brief Recycle a dynamic event. /// /// This function implements a simple garbage collector for the dynamic /// events. Only dynamic events are candidates for recycling. (A dynamic /// event is one that is allocated from an event pool, which is /// determined as non-zero e->attrQF__ attribute.) Next, the function /// decrements the reference counter of the event, and recycles the event /// only if the counter drops to zero (meaning that no more references /// are outstanding for this event). The dynamic event is recycled by /// returning it to the pool from which it was originally allocated. /// The pool-of-origin information is stored in the upper 2-MSBs of the /// e->attrQF__ attribute.) /// /// \note QF invokes the garbage collector at all appropriate contexts, /// when an event can become garbage (automatic garbage collection), /// so the application code should have NO need to call QF::gc() directly. /// The QF::gc() function is exposed only for special cases when your /// application sends dynamic events to the "raw" thread-safe queues /// (see ::QEQueue). Such queues are processed outside of QF and the /// automatic garbage collection CANNOT be performed for these events. /// In this case you need to call QF::gc() explicitly. static void gc(QEvent const *e); /// \brief array of registered active objects /// /// \note Not to be used by Clients directly, only in ports of QF static QActive *active_[]; private: // functions to be used in QF ports only /// \brief Register an active object to be managed by the framework /// /// This function should not be called by the application directly, only /// through the function QActive::start(). The priority of the active /// object \a a should be set before calling this function. /// /// \note This function raises an assertion if the priority of the active /// object exceeds the maximum value #QF_MAX_ACTIVE. Also, this function /// raises an assertion if the priority of the active object is already in /// use. (QF requires each active object to have a UNIQUE priority.) static void add_(QActive *a); public: /// \brief Remove the active object from the framework. /// /// This function should not be called by the application directly, only /// inside the QF port. The priority level occupied by the active object /// is freed-up and can be reused for another active object. /// /// The active object that is removed from the framework can no longer /// participate in the publish-subscribe event exchange. /// /// \note This function raises an assertion if the priority of the active /// object exceeds the maximum value #QF_MAX_ACTIVE or is not used. static void remove_(QActive const *a); friend class QActive; }; ////////////////////////////////////////////////////////////////////////////// // useful lookup tables /// \brief Lookup table for (log2(n) + 1), where n is the index /// into the table. /// /// This lookup delivers the 1-based number of the most significant 1-bit /// of a byte. /// /// \note Index range n = 0..255. The first index (n == 0) should never /// be used. /// extern uint8_t const Q_ROM Q_ROM_VAR QF_log2Lkup[256]; /// \brief Lookup table for (1 << ((n-1) % 8)), where n is the index /// into the table. /// /// \note Index range n = 0..64. The first index (n == 0) should never /// be used. extern uint8_t const Q_ROM Q_ROM_VAR QF_pwr2Lkup[65]; /// \brief Lookup table for ~(1 << ((n-1) % 8)), where n is the index /// into the table. /// /// \note Index range n = 0..64. The first index (n == 0) should never /// be used. extern uint8_t const Q_ROM Q_ROM_VAR QF_invPwr2Lkup[65]; /// \brief Lookup table for (n-1)/8 /// /// \note Index range n = 0..64. The first index (n == 0) should never /// be used. extern uint8_t const Q_ROM Q_ROM_VAR QF_div8Lkup[65]; ////////////////////////////////////////////////////////////////////////////// // QS software tracing #ifdef Q_SPY // qs.h ====================================================================== ////////////////////////////////////////////////////////////////////////////// /// \brief Quantum Spy record types. /// /// This enumeration specifies the record types used in the QP components. /// You can specify your own record types starting from ::QS_USER offset. /// Currently, the maximum of all records cannot exceed 256. /// \sa QS::filterOn()/#QS_FILTER_ON and QS::filterOff()/#QS_FILTER_OFF enum QSpyRecords { // QEP records QS_QEP_STATE_EMPTY, QS_QEP_STATE_ENTRY, ///< a state was entered QS_QEP_STATE_EXIT, ///< a state was exited QS_QEP_STATE_INIT, ///< an intial transition was taken in a state QS_QEP_INIT_TRAN, ///< the top-most initial transition was taken QS_QEP_INTERN_TRAN, ///< an internal transition was taken QS_QEP_TRAN, ///< a regular transition was taken QS_QEP_IGNORED, ///< an event was ignored (silently discarded) QS_QEP_DISPATCH, ///< an event was dispatched (begin of RTC step) QS_QEP_RESERVED0, // QF records QS_QF_ACTIVE_ADD, ///< an AO has been added to QF (started) QS_QF_ACTIVE_REMOVE, ///< an AO has been removed from QF (stopped) QS_QF_ACTIVE_SUBSCRIBE, ///< an AO subscribed to an event QS_QF_ACTIVE_UNSUBSCRIBE, ///< an AO unsubscribed to an event QS_QF_ACTIVE_POST_FIFO, ///< an event was posted (FIFO) directly to an AO QS_QF_ACTIVE_POST_LIFO, ///< an event was posted (LIFO) directly to an AO QS_QF_ACTIVE_GET, ///< an AO got an event and its queue is still not empty QS_QF_ACTIVE_GET_LAST, ///< an AO got an event and its queue is empty QS_QF_EQUEUE_INIT, ///< an event queue was initialized QS_QF_EQUEUE_POST_FIFO, ///< an event was posted (FIFO) to a raw queue QS_QF_EQUEUE_POST_LIFO, ///< an event was posted (LIFO) to a raw queue QS_QF_EQUEUE_GET, ///< get an event and queue still not empty QS_QF_EQUEUE_GET_LAST, ///< get the last event from the queue QS_QF_MPOOL_INIT, ///< a memory pool was initialized QS_QF_MPOOL_GET, ///< a memory block was removed from a memory pool QS_QF_MPOOL_PUT, ///< a memory block was returned to a memory pool QS_QF_PUBLISH, ///< an event was truly published to some subscribers QS_QF_RESERVED8, QS_QF_NEW, ///< new event creation QS_QF_GC_ATTEMPT, ///< garbage collection attempt QS_QF_GC, ///< garbage collection QS_QF_TICK, ///< QF::tick() was called QS_QF_TIMEEVT_ARM, ///< a time event was armed QS_QF_TIMEEVT_AUTO_DISARM, ///< a time event expired and was disarmed QS_QF_TIMEEVT_DISARM_ATTEMPT,///< an attempt to disarmed a disarmed tevent QS_QF_TIMEEVT_DISARM, ///< true disarming of an armed time event QS_QF_TIMEEVT_REARM, ///< rearming of a time event QS_QF_TIMEEVT_POST, ///< a time event posted itself directly to an AO QS_QF_RESERVED7, QS_QF_INT_LOCK, ///< interrupts were locked QS_QF_INT_UNLOCK, ///< interrupts were unlocked QS_QF_ISR_ENTRY, ///< an ISR was entered QS_QF_ISR_EXIT, ///< an ISR was exited QS_QF_RESERVED6, QS_QF_RESERVED5, QS_QF_RESERVED4, QS_QF_RESERVED3, QS_QF_RESERVED2, QS_QF_RESERVED1, QS_QF_RESERVED0, // QK records QS_QK_MUTEX_LOCK, ///< the QK mutex was locked QS_QK_MUTEX_UNLOCK, ///< the QK mutex was unlocked QS_QK_SCHEDULE, ///< the QK scheduler scheduled a new task to execute QS_QK_RESERVED6, QS_QK_RESERVED5, QS_QK_RESERVED4, QS_QK_RESERVED3, QS_QK_RESERVED2, QS_QK_RESERVED1, QS_QK_RESERVED0, // Miscellaneous QS records QS_SIG_DICTIONARY, ///< signal dictionary entry QS_OBJ_DICTIONARY, ///< object dictionary entry QS_FUN_DICTIONARY, ///< function dictionary entry QS_ASSERT, ///< assertion fired in the code QS_RESERVED5, QS_RESERVED4, QS_RESERVED3, QS_RESERVED2, QS_RESERVED1, QS_RESERVED0, // User records QS_USER ///< the first record available for user QS records }; /// \brief Specification of all QS records for the QS::filterOn() and /// QS::filterOff() #define QS_ALL_RECORDS ((uint8_t)0xFF) /// \brief Constant representing End-Of-Data condition returned from the /// QS::getByte() function. #define QS_EOD ((uint16_t)0xFFFF) #ifndef QS_TIME_SIZE /// \brief The size (in bytes) of the QS time stamp. Valid values: 1, 2, /// or 4; default 4. /// /// This macro can be defined in the QS port file (qs_port.h) to /// configure the ::QSTimeCtr type. Here the macro is not defined so the /// default of 4 byte is chosen. #define QS_TIME_SIZE 4 #endif #if (QS_TIME_SIZE == 1) typedef uint8_t QSTimeCtr; #define QS_TIME_() QS::u8_(QS::onGetTime()) #elif (QS_TIME_SIZE == 2) typedef uint16_t QSTimeCtr; #define QS_TIME_() QS::u16_(QS::onGetTime()) #elif (QS_TIME_SIZE == 4) /// \brief The type of the QS time stamp /// /// This type determines the dynamic range of QS time stamps typedef uint32_t QSTimeCtr; /// \brief Internal macro to output time stamp to the QS record #define QS_TIME_() QS::u32_(QS::onGetTime()) #else #error "QS_TIME_SIZE defined incorrectly, expected 1, 2, or 4" #endif #ifndef Q_ROM // provide the default if Q_ROM NOT defined #define Q_ROM #endif #ifndef Q_ROM_VAR // provide the default if Q_ROM_VAR NOT defined #define Q_ROM_VAR #endif #ifndef Q_ROM_BYTE // provide the default if Q_ROM_BYTE NOT defined #define Q_ROM_BYTE(rom_var_) (rom_var_) #endif /// \brief Quantum Spy logging facilities /// /// This class groups together QS services. It has only static members and /// should not be instantiated. class QS { public: /// \brief Get the current version of QS /// /// \return version of the QS as a constant 6-character string of the form /// x.y.zz, where x is a 1-digit major version number, y is a 1-digit /// minor version number, and zz is a 2-digit release number. static char const Q_ROM * Q_ROM_VAR getVersion(void); /// \brief Initialize the QS data buffer. /// /// This function should be called from QS_init() to provide QS with the /// data buffer. The first argument \a sto[] is the address of the memory /// block, and the second argument \a stoSize is the size of this block /// in bytes. Currently the size of the QS buffer cannot exceed 64KB. /// /// QS can work with quite small data buffers, but you will start losing /// data if the buffer is too small for the bursts of logging activity. /// The right size of the buffer depends on the data production rate and /// the data output rate. QS offers flexible filtering to reduce the data /// production rate. /// /// \note If the data output rate cannot keep up with the production rate, /// QS will start overwriting the older data with newer data. This is /// consistent with the "last-is-best" QS policy. The record sequence /// counters and checksums on each record allow to easily detect data /// loss. static void initBuf(uint8_t sto[], uint32_t stoSize); /// \brief Turn the global Filter on for a given record type \a rec. /// /// This function sets up the QS filter to enable the record type \a rec. /// The argument #QS_ALL_RECORDS specifies to filter-on all records. /// This function should be called indirectly through the macro /// #QS_FILTER_ON. /// /// \note Filtering based on the record-type is only the first layer of /// filtering. The second layer is based on the object-type. Both filter /// layers must be enabled for the QS record to be inserted into the QS /// buffer. /// \sa QS_filterOff(), #QS_FILTER_SM_OBJ, #QS_FILTER_AO_OBJ, /// #QS_FILTER_MP_OBJ, #QS_FILTER_EQ_OBJ, and #QS_FILTER_TE_OBJ. static void filterOn(uint8_t rec); /// \brief Turn the global Filter off for a given record type \a rec. /// /// This function sets up the QS filter to disable the record type \a rec. /// The argument #QS_ALL_RECORDS specifies to suppress all records. /// This function should be called indirectly through the macro /// #QS_FILTER_OFF. /// /// \note Filtering records based on the record-type is only the first /// layer of filtering. The second layer is based on the object-type. /// Both filter layers must be enabled for the QS record to be inserted /// into the QS buffer. /// \sa static void filterOff(uint8_t rec); /// \brief Mark the begin of a QS record \a rec /// /// This function must be called at the beginning of each QS record. /// This function should be called indirectly through the macro #QS_BEGIN, /// or #QS_BEGIN_NOLOCK, depending if it's called in a normal code or from /// a critical section. static void begin(uint8_t rec); /// \brief Mark the end of a QS record \a rec /// /// This function must be called at the end of each QS record. /// This function should be called indirectly through the macro #QS_END, /// or #QS_END_NOLOCK, depending if it's called in a normal code or from /// a critical section. static void end(void); // unformatted data elements output ...................................... /// \brief output uint8_t data element without format information /// \note This function is only to be used through macros, never in the /// client code directly. static void u8_(uint8_t d); /// \brief Output uint16_t data element without format information /// \note This function is only to be used through macros, never in the /// client code directly. static void u16_(uint16_t d); /// \brief Output uint32_t data element without format information /// \note This function is only to be used through macros, never in the /// client code directly. static void u32_(uint32_t d); /// \brief Output zero-terminated ASCII string element without format /// information /// \note This function is only to be used through macros, never in the /// client code directly. static void str_(char const *s); /// \brief Output zero-terminated ASCII string element allocated in ROM /// without format information /// \note This function is only to be used through macros, never in the /// client code directly. static void str_ROM_(char const Q_ROM * Q_ROM_VAR s); // formatted data elements output ........................................ /// \brief Output uint8_t data element with format information /// \note This function is only to be used through macros, never in the /// client code directly. static void u8(uint8_t format, uint8_t d); /// \brief output uint16_t data element with format information /// \note This function is only to be used through macros, never in the /// client code directly. static void u16(uint8_t format, uint16_t d); /// \brief Output uint32_t data element with format information /// \note This function is only to be used through macros, never in the /// client code directly. static void u32(uint8_t format, uint32_t d); /// \brief Output 32-bit floating point data element with format /// information /// \note This function is only to be used through macros, never in the /// client code directly. static void f32(uint8_t format, float d); /// \brief Output 64-bit floating point data element with format /// information /// \note This function is only to be used through macros, never in the /// client code directly. static void f64(uint8_t format, double d); /// \brief Output zero-terminated ASCII string element with format /// information /// \note This function is only to be used through macros, never in the /// client code directly. static void str(char const *s); /// \brief Output zero-terminated ASCII string element allocated in ROM /// with format information /// \note This function is only to be used through macros, never in the /// client code directly. static void str_ROM(char const Q_ROM * Q_ROM_VAR s); /// \brief Output memory block of up to 255-bytes with format information /// \note This function is only to be used through macros, never in the /// client code directly. static void mem(uint8_t const *blk, uint8_t size); // QS buffer access ...................................................... /// \brief Byte-oriented interface to the QS data buffer. /// /// This function delivers one byte at a time from the QS data buffer. /// The function returns the byte in the least-significant 8-bits of the /// 16-bit return value if the byte is available. If no more data is /// available at the time, the function returns QS_EOD (End-Of-Data). /// /// \note QS::getByte() is NOT protected with a critical section. static uint16_t getByte(void); /// \brief Block-oriented interface to the QS data buffer. /// /// This function delivers a contiguous block of data from the QS data /// buffer. The function returns the pointer to the beginning of the /// block, and writes the number of bytes in the block to the location /// pointed to by \a pNbytes. The argument \a pNbytes is also used as /// input to provide the maximum size of the data block that the caller /// can accept. /// /// If no bytes are available in the QS buffer when the function is /// called, the function returns a NULL pointer and sets the value /// pointed to by \a pNbytes to zero. /// /// \note Only the NULL return from QS::getBlock() indicates that the QS /// buffer is empty at the time of the call. The non-NULL return often /// means that the block is at the end of the buffer and you need to call /// QS::getBlock() again to obtain the rest of the data that "wrapped /// around" to the beginning of the QS data buffer. /// /// \note QS::getBlock() is NOT protected with a critical section. static uint8_t const *getBlock(uint16_t *pNbytes); // platform-dependent callback functions, need to be implemented by clients public: // platform-specific callback functions, need to be implemented by clients /// \brief Callback to startup the QS facility /// /// This is a platform-dependent "callback" function invoked through the /// macro #QS_INIT. You need to implement this function in your /// application. At a minimum, the function must configure the QS buffer /// by calling QS::initBuf(). Typically, you will also want to open/ /// configure the QS output channel, such as a serial port, or a file. /// The void* argument \a arg can be used to pass parameter(s) needed to /// configure the output channel. /// /// The function returns TRUE (1) if the QS initialization was successful, /// or FALSE (0) if it failed. /// /// The following example illustrates an implementation of QS_onStartup(): /// \include qs_startup.cpp static uint8_t onStartup(void const *arg); /// \brief Callback to cleanup the QS facility /// /// This is a platform-dependent "callback" function invoked through the /// macro #QS_EXIT. You need to implement this function in your /// application. The main purpose of this function is to close the QS /// output channel, if necessary. static void onCleanup(void); /// \brief Callback to flush the QS trace data to the host /// /// This is a platform-dependent "callback" function to flush the QS /// trace buffer to the host. The function typically busy-waits until all /// the data in the buffer is sent to the host. This is acceptable only /// in the initial transient. static void onFlush(void); /// \brief Callback to obtain a timestamp for a QS record. /// /// This is a platform-dependent "callback" function invoked from the /// macro #QS_TIME_ to add the time stamp to the QS record. /// /// \note Some of the pre-defined QS records from QP do not output the /// time stamp. However, ALL user records do output the time stamp. /// \note QS::onGetTime() is called in a critical section and should not /// unlock interrupts. /// /// The following example shows using a system call to implement QS /// time stamping: /// \include qs_onGetTime.cpp static QSTimeCtr onGetTime(void); // Global and Local QS filters ............................................... public: static uint8_t glbFilter_[32]; ///< global on/off QS filter static void const *smObj_; ///< state machine for QEP local filter static void const *aoObj_; ///< active object for QF/QK local filter static void const *mpObj_; ///< event pool for QF local filter static void const *eqObj_; ///< raw queue for QF local filter static void const *teObj_; ///< time event for QF local filter static void const *apObj_;///< generic object Application QF local filter // Miscallaneous ............................................................. public: /// tick counter for the QS_QF_TICK record static QSTimeCtr volatile tickCtr_; }; ////////////////////////////////////////////////////////////////////////////// // Macros for adding QS instrumentation to the client code /// \brief Initialize the QS facility. /// /// This macro provides an indirection layer to invoke the QS initialization /// routine if #Q_SPY is defined, or do nothing if #Q_SPY is not defined. /// \sa QS::onStartup(), example of setting up a QS filter in #QS_FILTER_IN #define QS_INIT(arg_) QS::onStartup(arg_) /// \brief Cleanup the QS facility. /// /// This macro provides an indirection layer to invoke the QS cleanup /// routine if #Q_SPY is defined, or do nothing if #Q_SPY is not defined. /// \sa QS::onCleanup() #define QS_EXIT() QS::onCleanup() /// \brief Global Filter ON for a given record type \a rec. /// /// This macro provides an indirection layer to call QS::filterOn() if #Q_SPY /// is defined, or do nothing if #Q_SPY is not defined. /// /// The following example shows how to use QS filters: /// \include qs_filter.cpp #define QS_FILTER_ON(rec_) QS::filterOn(rec_) /// \brief Global filter OFF for a given record type \a rec. /// /// This macro provides an indirection layer to call QS::filterOff() if #Q_SPY /// is defined, or do nothing if #Q_SPY is not defined. /// /// \sa Example of using QS filters in #QS_FILTER_ON documentation #define QS_FILTER_OFF(rec_) QS::filterOff(rec_) /// \brief Local Filter for a given state machine object \a obj_. /// /// This macro sets up the state machine object local filter if #Q_SPY is /// defined, or does nothing if #Q_SPY is not defined. The argument \a obj_ /// is the pointer to the state machine object that you want to monitor. /// /// The state machine object filter allows you to filter QS records pertaining /// only to a given state machine object. With this filter disabled, QS will /// output records from all state machines in your application. The object /// filter is disabled by setting the state machine pointer to NULL. /// /// The state machine filter affects the following QS records: /// ::QS_QEP_STATE_ENTRY, ::QS_QEP_STATE_EXIT, ::QS_QEP_STATE_INIT, /// ::QS_QEP_INIT_TRAN, ::QS_QEP_INTERN_TRAN, ::QS_QEP_TRAN, /// and ::QS_QEP_IGNORED. /// /// \note Because active objects are state machines at the same time, /// the state machine filter (#QS_FILTER_SM_OBJ) pertains to active /// objects as well. However, the state machine filter is more general, /// because it can be used only for state machines that are not active /// objects, such as "Orthogonal Components". /// /// \sa Example of using QS filters in #QS_FILTER_ON documentation #define QS_FILTER_SM_OBJ(obj_) (QS::smObj_ = (obj_)) /// \brief Local Filter for a given active object \a obj_. /// /// This macro sets up the active object local filter if #Q_SPY is defined, /// or does nothing if #Q_SPY is not defined. The argument \a obj_ is the /// pointer to the active object that you want to monitor. /// /// The active object filter allows you to filter QS records pertaining /// only to a given active object. With this filter disabled, QS will /// output records from all active objects in your application. The object /// filter is disabled by setting the active object pointer \a obj_ to NULL. /// /// The active object filter affects the following QS records: /// ::QS_QF_ACTIVE_ADD, ::QS_QF_ACTIVE_REMOVE, ::QS_QF_ACTIVE_SUBSCRIBE, /// ::QS_QF_ACTIVE_UNSUBSCRIBE, ::QS_QF_ACTIVE_POST_FIFO, /// ::QS_QF_ACTIVE_POST_LIFO, ::QS_QF_ACTIVE_GET, and ::QS_QF_ACTIVE_GET_LAST. /// /// \sa Example of using QS filters in #QS_FILTER_ON documentation #define QS_FILTER_AO_OBJ(obj_) (QS::aoObj_ = (obj_)) /// \brief Local Filter for a given memory pool object \a obj_. /// /// This macro sets up the memory pool object local filter if #Q_SPY is /// defined, or does nothing if #Q_SPY is not defined. The argument \a obj_ /// is the pointer to the memory buffer used during the initialization of the /// event pool with QF::poolInit(). /// /// The memory pool filter allows you to filter QS records pertaining /// only to a given memory pool. With this filter disabled, QS will /// output records from all memory pools in your application. The object /// filter is disabled by setting the memory pool pointer \a obj_ to NULL. /// /// The memory pool filter affects the following QS records: /// ::QS_QF_MPOOL_INIT, ::QS_QF_MPOOL_GET, and ::QS_QF_MPOOL_PUT. /// /// \sa Example of using QS filters in #QS_FILTER_ON documentation #define QS_FILTER_MP_OBJ(obj_) (QS::mpObj_ = (obj_)) /// \brief Filter for a given event queue object \a obj_. /// /// This macro sets up the event queue object filter if #Q_SPY is defined, /// or does nothing if #Q_SPY is not defined. The argument \a obj_ is the /// pointer to the "raw" thread-safe queue object you want to monitor. /// /// The event queue filter allows you to filter QS records pertaining /// only to a given event queue. With this filter disabled, QS will /// output records from all event queues in your application. The object /// filter is disabled by setting the event queue pointer \a obj_ to NULL. /// /// The event queue filter affects the following QS records: /// ::QS_QF_EQUEUE_INIT, ::QS_QF_EQUEUE_POST_FIFO, ::QS_QF_EQUEUE_POST_LIFO, /// ::QS_QF_EQUEUE_GET, and ::QS_QF_EQUEUE_GET_LAST. /// /// \sa Example of using QS filters in #QS_FILTER_IN documentation #define QS_FILTER_EQ_OBJ(obj_) (QS::eqObj_ = (obj_)) /// \brief Local Filter for a given time event object \a obj_. /// /// This macro sets up the time event object local filter if #Q_SPY is /// defined, or does nothing if #Q_SPY is not defined. The argument \a obj_ /// is the pointer to the time event object you want to monitor. /// /// The time event filter allows you to filter QS records pertaining /// only to a given time event. With this filter disabled, QS will /// output records from all time events in your application. The object /// filter is disabled by setting the time event pointer \a obj_ to NULL. /// /// The time event filter affects the following QS records: /// ::QS_QF_TIMEEVT_ARM, ::QS_QF_TIMEEVT_AUTO_DISARM, /// ::QS_QF_TIMEEVT_DISARM_ATTEMPT, ::QS_QF_TIMEEVT_DISARM, /// ::QS_QF_TIMEEVT_REARM, ::QS_QF_TIMEEVT_POST, and ::QS_QF_TIMEEVT_PUBLISH. /// /// \sa Example of using QS filters in #QS_FILTER_ON documentation #define QS_FILTER_TE_OBJ(obj_) (QS::teObj_ = (obj_)) /// \brief Local Filter for a generic application object \a obj_. /// /// This macro sets up the local application object filter if #Q_SPY is /// defined, or does nothing if #Q_SPY is not defined. The argument \a obj_ /// is the pointer to the application object you want to monitor. /// /// The application object filter allows you to filter QS records pertaining /// only to a given application object. With this filter disabled, QS will /// output records from all application-records enabled by the global filter. /// The local filter is disabled by setting the time event pointer \a obj_ /// to NULL. /// /// \sa Example of using QS filters in #QS_FILTER_ON documentation #define QS_FILTER_AP_OBJ(obj_) (QS_apObj_ = (obj_)) ////////////////////////////////////////////////////////////////////////////// // Macros to generate user QS records /// \brief Begin a QS user record without locking interrupts. #define QS_BEGIN_NOLOCK(rec_, obj_) \ if (((QS::glbFilter_[(uint8_t)(rec_) >> 3U] \ & (1U << ((uint8_t)(rec_) & 7U))) != 0) \ && ((QS::apObj_ == (void *)0) || (QS::apObj_ == (obj_)))) \ { \ QS::begin((uint8_t)(rec_)); \ QS_TIME_(); /// \brief End a QS user record without locking interrupts. #define QS_END_NOLOCK() \ QS_END_NOLOCK_() // QS-specific interrupt locking/unlocking #ifndef QF_INT_KEY_TYPE /// \brief This is an internal macro for defining the interrupt lock key. /// /// The purpose of this macro is to enable writing the same code for the /// case when interrupt key is defined and when it is not. If the macro /// #QS_INT_KEY_TYPE is defined, this internal macro provides the /// definition of the lock key variable. Otherwise this macro is empty. /// \sa #QS_INT_KEY_TYPE, #QF_INT_KEY_TYPE #define QS_INT_LOCK_KEY_ /// \brief This is an internal macro for locking interrupts. /// /// The purpose of this macro is to enable writing the same code for the /// case when interrupt key is defined and when it is not. If the macro /// #QS_INT_KEY_TYPE is defined, this internal macro invokes #QS_INT_LOCK /// passing the key variable as the parameter. Otherwise #QS_INT_LOCK /// is invoked with a dummy parameter. /// \sa #QS_INT_LOCK, #QF_INT_LOCK, #QK_INT_LOCK #define QS_INT_LOCK_() QF_INT_LOCK(ignore_) /// \brief This is an internal macro for unlocking interrupts. /// /// The purpose of this macro is to enable writing the same code for the /// case when interrupt key is defined and when it is not. If the macro /// #QS_INT_KEY_TYPE is defined, this internal macro invokes /// #QS_INT_UNLOCK passing the key variable as the parameter. Otherwise /// #QS_INT_UNLOCK is invoked with a dummy parameter. /// \sa #QS_INT_UNLOCK, #QF_INT_UNLOCK, #QK_INT_UNLOCK #define QS_INT_UNLOCK_() QF_INT_UNLOCK(ignore_) #else #define QS_INT_LOCK_KEY_ QF_INT_KEY_TYPE intLockKey_; #define QS_INT_LOCK_() QF_INT_LOCK(intLockKey_) #define QS_INT_UNLOCK_() QF_INT_UNLOCK(intLockKey_) #endif /// \brief Begin a user QS record with locking interrupts. /// /// The following example shows how to build a user QS record using the /// macros #QS_BEGIN, #QS_END, and the formatted output macros: #QS_U8 and /// #QS_STR. /// \include qs_user.cpp /// \note Must always be used in pair with #QS_END #define QS_BEGIN(rec_, obj_) \ if (((QS::glbFilter_[(uint8_t)(rec_) >> 3U] \ & (1U << ((uint8_t)(rec_) & 7U))) != 0U) \ && ((QS::apObj_ == (void *)0) || (QS::apObj_ == (obj_)))) \ { \ QS_INT_LOCK_KEY_ \ QS_INT_LOCK_(); \ QS::begin((uint8_t)(rec_)); \ QS_TIME_(); /// \brief End a QS record with locking interrupts. /// \sa example for #QS_BEGIN /// \note Must always be used in pair with #QS_BEGIN #define QS_END() \ QS_END_() ////////////////////////////////////////////////////////////////////////////// // Macros for use inside other macros or internally in the QP code /// \brief Internal QS macro to begin a QS record with locking the interrupts. /// \note This macro is intended to use only inside QP components and NOT /// at the application level. \sa #QS_BEGIN #define QS_BEGIN_(rec_, objFilter_, obj_) \ if (((QS::glbFilter_[(uint8_t)(rec_) >> 3U] \ & (1U << ((uint8_t)(rec_) & 7U))) != 0U) \ && (((objFilter_) == (void *)0) || ((objFilter_) == (obj_)))) \ { \ QS_INT_LOCK_(); \ QS::begin((uint8_t)(rec_)); /// \brief Internal QS macro to end a QS record with locking the interrupts. /// \note This macro is intended to use only inside QP components and NOT /// at the application level. \sa #QS_END #define QS_END_() \ QS::end(); \ QS_INT_UNLOCK_(); \ } /// \brief Internal QS macro to begin a QS record without locking the /// interrupts. /// \note This macro is intended to use only inside QP components and NOT /// at the application level. \sa #QS_BEGIN_NOLOCK #define QS_BEGIN_NOLOCK_(rec_, objFilter_, obj_) \ if (((QS::glbFilter_[(uint8_t)(rec_) >> 3U] \ & (1U << ((uint8_t)(rec_) & 7U))) != 0U) \ && (((objFilter_) == (void *)0) || ((objFilter_) == (obj_)))) \ { \ QS::begin((uint8_t)(rec_)); /// \brief Internal QS macro to end a QS record without locking /// the interrupts. /// \note This macro is intended to use only inside QP components and NOT /// at the application level. \sa #QS_END_NOLOCK #define QS_END_NOLOCK_() \ QS::end(); \ } /// \brief Internal QS macro to output an unformatted uint8_t data element #define QS_U8_(data_) QS::u8_(data_) /// \brief Internal QS macro to output an unformatted uint16_t data element #define QS_U16_(data_) QS::u16_(data_) /// \brief Internal QS macro to output an unformatted uint32_t data element #define QS_U32_(data_) QS::u32_(data_) #if (QS_OBJ_PTR_SIZE == 1) #define QS_OBJ_(obj_) QS::u8_((uint8_t)(obj_)) #elif (QS_OBJ_PTR_SIZE == 2) #define QS_OBJ_(obj_) QS::u16_((uint16_t)(obj_)) #elif (QS_OBJ_PTR_SIZE == 4) #define QS_OBJ_(obj_) QS::u32_((uint32_t)(obj_)) #else /// \brief Internal QS macro to output an unformatted object pointer /// data element /// \note the size of the pointer depends on the macro #QS_OBJ_PTR_SIZE. /// If the size is not defined the size of pointer is assumed 4-bytes. #define QS_OBJ_(obj_) QS::u32_((uint32_t)(obj_)) #endif #if (QS_FUN_PTR_SIZE == 1) #define QS_FUN_(fun_) QS::u8_((uint8_t)(fun_)) #elif (QS_FUN_PTR_SIZE == 2) #define QS_FUN_(fun_) QS::u16_((uint16_t)(fun_)) #elif (QS_FUN_PTR_SIZE == 4) #define QS_FUN_(fun_) QS::u32_((uint32_t)(fun_)) #else /// \brief Internal QS macro to output an unformatted function pointer /// data element /// \note the size of the pointer depends on the macro #QS_FUN_PTR_SIZE. /// If the size is not defined the size of pointer is assumed 4-bytes. #define QS_FUN_(fun_) QS::u32_((uint32_t)(fun_)) #endif /// \brief Internal QS macro to output a zero-terminated ASCII string /// data element #define QS_STR_(msg_) QS::str_(msg_) /// \brief Internal QS macro to output a zero-terminated ASCII string /// allocated in ROM data element #define QS_STR_ROM_(msg_) QS::str_ROM_(msg_) ////////////////////////////////////////////////////////////////////////////// // Macros for use in the client code /// \brief Enumerates data formats recognized by QS /// /// QS uses this enumeration is used only internally for the formatted user /// data elements. enum QSType { QS_I8_T, ///< signed 8-bit integer format QS_U8_T, ///< unsigned 8-bit integer format QS_I16_T, ///< signed 16-bit integer format QS_U16_T, ///< unsigned 16-bit integer format QS_I32_T, ///< signed 32-bit integer format QS_U32_T, ///< unsigned 32-bit integer format QS_F32_T, ///< 32-bit floating point format QS_F64_T, ///< 64-bit floating point format QS_STR_T, ///< zero-terminated ASCII string format QS_MEM_T, ///< up to 255-bytes memory block format QS_SIG_T, ///< event signal format QS_OBJ_T, ///< object pointer format QS_FUN_T ///< function pointer format }; /// \brief Output formatted int8_t to the QS record #define QS_I8(width_, data_) \ QS::u8((uint8_t)(((width_) << 4)) | QS_I8_T, (data_)) /// \brief Output formatted uint8_t to the QS record #define QS_U8(width_, data_) \ QS::u8((uint8_t)(((width_) << 4)) | QS_U8_T, (data_)) /// \brief Output formatted int16_t to the QS record #define QS_I16(width_, data_) \ QS::u16((uint8_t)(((width_) << 4)) | QS_I16_T, (data_)) /// \brief Output formatted uint16_t to the QS record #define QS_U16(width_, data_) \ QS::u16((uint8_t)(((width_) << 4)) | QS_U16_T, (data_)) /// \brief Output formatted int32_t to the QS record #define QS_I32(width_, data_) \ QS::u32((uint8_t)(((width_) << 4)) | QS_I32_T, (data_)) /// \brief Output formatted uint32_t to the QS record #define QS_U32(width_, data_) \ QS::u32((uint8_t)(((width_) << 4)) | QS_U32_T, (data_)) /// \brief Output formatted 32-bit floating point number to the QS record #define QS_F32(width_, data_) \ QS::f32((uint8_t)(((width_) << 4)) | QS_F32_T, (data_)) /// \brief Output formatted 64-bit floating point number to the QS record #define QS_F64(width_, data_) \ QS::f64((uint8_t)(((width_) << 4)) | QS_F64_T, (data_)) /// \brief Output formatted zero-terminated ASCII string to the QS record #define QS_STR(str_) QS::str(str_) /// \brief Output formatted zero-terminated ASCII string from ROM /// to the QS record #define QS_STR_ROM(str_) QS::str_ROM(str_) /// \brief Output formatted memory block of up to 255 bytes to the QS /// record #define QS_MEM(mem_, size_) QS::mem((mem_), (size_)) #if (QS_OBJ_PTR_SIZE == 1) #define QS_OBJ(obj_) QS::u8(QS_OBJ_T, (uint8_t)(obj_)) #elif (QS_OBJ_PTR_SIZE == 2) #define QS_OBJ(obj_) QS::u16(QS_OBJ_T, (uint16_t)(obj_)) #elif (QS_OBJ_PTR_SIZE == 4) #define QS_OBJ(obj_) QS::u32(QS_OBJ_T, (uint32_t)(obj_)) #else /// \brief Output formatted object pointer to the QS record #define QS_OBJ(obj_) QS::u32(QS_OBJ_T, (uint32_t)(obj_)) #endif #if (QS_FUN_PTR_SIZE == 1) #define QS_FUN(fun_) QS::u8(QS_FUN_T, (uint8_t)(fun_)) #elif (QS_FUN_PTR_SIZE == 2) #define QS_FUN(fun_) QS::u16(QS_FUN_T, (uint16_t)(fun_)) #elif (QS_FUN_PTR_SIZE == 4) #define QS_FUN(fun_) QS::u32(QS_FUN_T, (uint32_t)(fun_)) #else /// \brief Output formatted function pointer to the QS record #define QS_FUN(fun_) QS::u32(QS_FUN_T, (uint32_t)(fun_)) #endif /// \brief Output signal dictionary record /// /// A signal dictionary record associates the numerical value of the signal /// and the binary address of the state machine that consumes that signal /// with the human-readable name of the signal. /// /// Providing a signal dictionary QS record can vastly improve readability of /// the QS log, because instead of dealing with cryptic machine addresses the /// QSpy host utility can display human-readable names. /// /// A signal dictionary entry is associated with both the signal value \a sig_ /// and the state machine \a obj_, because signals are required to be unique /// only within a given state machine and therefore the same numerical values /// can represent different signals in different state machines. /// /// For the "global" signals that have the same meaning in all state machines /// (such as globally published signals), you can specify a signal dictionary /// entry with the \a obj_ parameter set to NULL. /// /// The following example shows the definition of signal dictionary entries /// in the initial transition of the Table active object. Please note that /// signals HUNGRY_SIG and DONE_SIG are associated with the Table state /// machine only ("me" \a obj_ pointer). The EAT_SIG signal, on the other /// hand, is global (0 \a obj_ pointer): /// \include qs_sigDic.cpp /// /// \note The QSpy log utility must capture the signal dictionary record /// in order to use the human-readable information. You need to connect to /// the target before the dictionary entries have been transmitted. /// /// The following QSpy log example shows the signal dictionary records /// generated from the Table initial transition and subsequent records that /// show human-readable names of the signals: /// \include qs_sigLog.txt /// /// The following QSpy log example shows the same sequence of records, but /// with dictionary records removed. The human-readable signal names are not /// available. /// \include qs_sigLog0.txt #define QS_SIG_DICTIONARY(sig_, obj_) \ if (((QS::glbFilter_[(uint8_t)QS_SIG_DICTIONARY >> 3U] \ & (1U << ((uint8_t)QS_SIG_DICTIONARY & 7U))) != 0U)) \ { \ static char const Q_ROM Q_ROM_VAR sig_name__[] = #sig_; \ QS_INT_LOCK_KEY_ \ QS_INT_LOCK_(); \ QS::begin((uint8_t)QS_SIG_DICTIONARY); \ QS_SIG_(sig_); \ QS_OBJ_(obj_); \ QS_STR_ROM_(sig_name__); \ QS::end(); \ QS_INT_UNLOCK_(); \ QS::onFlush(); \ } else ((void)0) /// \brief Output object dictionary record /// /// An object dictionary record associates the binary address of an object /// in the target's memory with the human-readable name of the object. /// /// Providing an object dictionary QS record can vastly improve readability of /// the QS log, because instead of dealing with cryptic machine addresses the /// QSpy host utility can display human-readable object names. /// /// The following example shows the definition of object dictionary entry /// for the Table active object: /// \include qs_objDic.cpp #define QS_OBJ_DICTIONARY(obj_) \ if (((QS::glbFilter_[(uint8_t)QS_OBJ_DICTIONARY >> 3U] \ & (1U << ((uint8_t)QS_OBJ_DICTIONARY & 7U))) != 0U)) \ { \ static char const Q_ROM Q_ROM_VAR obj_name__[] = #obj_; \ QS_INT_LOCK_KEY_ \ QS_INT_LOCK_(); \ QS::begin((uint8_t)QS_OBJ_DICTIONARY); \ QS_OBJ_(obj_); \ QS_STR_ROM_(obj_name__); \ QS::end(); \ QS_INT_UNLOCK_(); \ QS::onFlush(); \ } else ((void)0) /// \brief Output function dictionary record /// /// A function dictionary record associates the binary address of a function /// in the target's memory with the human-readable name of the function. /// /// Providing a function dictionary QS record can vastly improve readability /// of the QS log, because instead of dealing with cryptic machine addresses /// the QSpy host utility can display human-readable function names. /// /// The example from #QS_SIG_DICTIONARY shows the definition of a function /// dictionary. #define QS_FUN_DICTIONARY(fun_) \ if (((QS::glbFilter_[(uint8_t)QS_FUN_DICTIONARY >> 3U] \ & (1U << ((uint8_t)QS_FUN_DICTIONARY & 7U))) != 0U)) \ { \ static char const Q_ROM Q_ROM_VAR fun_name__[] = #fun_; \ QS_INT_LOCK_KEY_ \ QS_INT_LOCK_(); \ QS::begin((uint8_t)QS_FUN_DICTIONARY); \ QS_FUN_(fun_); \ QS_STR_ROM_(fun_name__); \ QS::end(); \ QS_INT_UNLOCK_(); \ QS::onFlush(); \ } else ((void)0) /// \brief Flush the QS trace data to the host /// /// This macro invokes the QS::flush() platform-dependent callback function /// to flush the QS trace buffer to the host. The function typically /// busy-waits until all the data in the buffer is sent to the host. /// This is acceptable only in the initial transient. #define QS_FLUSH() QS::onFlush() /// \brief Output the interrupt lock record #define QF_QS_INT_LOCK() \ QS_BEGIN_NOLOCK_(QS_QF_INT_LOCK, (void *)0, (void *)0); \ QS_TIME_(); \ QS_U8_((uint8_t)(++QF_intLockNest_)); \ QS_END_NOLOCK_() /// \brief Output the interrupt unlock record #define QF_QS_INT_UNLOCK() \ QS_BEGIN_NOLOCK_(QS_QF_INT_UNLOCK, (void *)0, (void *)0); \ QS_TIME_(); \ QS_U8_((uint8_t)(QF_intLockNest_--)); \ QS_END_NOLOCK_() /// \brief Output the interrupt entry record #define QF_QS_ISR_ENTRY(isrnest_, prio_) \ QS_BEGIN_NOLOCK_(QS_QF_ISR_ENTRY, (void *)0, (void *)0); \ QS_TIME_(); \ QS_U8_(isrnest_); \ QS_U8_(prio_); \ QS_END_NOLOCK_() /// \brief Output the interrupt exit record #define QF_QS_ISR_EXIT(isrnest_, prio_) \ QS_BEGIN_NOLOCK_(QS_QF_ISR_EXIT, (void *)0, (void *)0); \ QS_TIME_(); \ QS_U8_(isrnest_); \ QS_U8_(prio_); \ QS_END_NOLOCK_() /// \brief Execute an action that is only necessary for QS output #define QF_QS_ACTION(act_) (act_) /// \brief interrupt-lock nesting level /// /// \note Not to be used by Clients directly, only in ports of QF extern uint8_t QF_intLockNest_; // from "qep.h" -------------------------------------------------------------- #if (Q_SIGNAL_SIZE == 1) /// \brief Internal QS macro to output an unformatted event signal /// data element /// \note the size of the pointer depends on the macro #Q_SIGNAL_SIZE. #define QS_SIG_(sig_) QS::u8_(sig_) #elif (Q_SIGNAL_SIZE == 2) #define QS_SIG_(sig_) QS::u16_(sig_) #elif (Q_SIGNAL_SIZE == 4) #define QS_SIG_(sig_) QS::u32_(sig_) #endif // from "qf.h" --------------------------------------------------------------- #if (QF_EQUEUE_CTR_SIZE == 1) /// \brief Internal QS macro to output an unformatted event queue /// counter data element /// \note the counter size depends on the macro #QF_EQUEUE_CTR_SIZE. #define QS_EQC_(ctr_) QS::u8_(ctr_) #elif (QF_EQUEUE_CTR_SIZE == 2) #define QS_EQC_(ctr_) QS::u16_(ctr_) #elif (QF_EQUEUE_CTR_SIZE == 4) #define QS_EQC_(ctr_) QS::u32_(ctr_) #else #error "QF_EQUEUE_CTR_SIZE not defined" #endif #if (QF_EVENT_SIZ_SIZE == 1) /// \brief Internal QS macro to output an unformatted event size /// data element /// \note the event size depends on the macro #QF_EVENT_SIZ_SIZE. #define QS_EVS_(size_) QS::u8_(size_) #elif (QF_EVENT_SIZ_SIZE == 2) #define QS_EVS_(size_) QS::u16_(size_) #elif (QF_EVENT_SIZ_SIZE == 4) #define QS_EVS_(size_) QS::u32_(size_) #endif #if (QF_MPOOL_SIZ_SIZE == 1) /// \brief Internal QS macro to output an unformatted memory pool /// block-size data element /// \note the block-size depends on the macro #QF_MPOOL_SIZ_SIZE. #define QS_MPS_(size_) QS::u8_(size_) #elif (QF_MPOOL_SIZ_SIZE == 2) #define QS_MPS_(size_) QS::u16_(size_) #elif (QF_MPOOL_SIZ_SIZE == 4) #define QS_MPS_(size_) QS::u32_(size_) #endif #if (QF_MPOOL_CTR_SIZE == 1) /// \brief Internal QS macro to output an unformatted memory pool /// block-counter data element /// \note the counter size depends on the macro #QF_MPOOL_CTR_SIZE. #define QS_MPC_(ctr_) QS::u8_(ctr_) #elif (QF_MPOOL_CTR_SIZE == 2) #define QS_MPC_(ctr_) QS::u16_(ctr_) #elif (QF_MPOOL_CTR_SIZE == 4) #define QS_MPC_(ctr_) QS::u32_(ctr_) #endif #if (QF_TIMEEVT_CTR_SIZE == 1) /// \brief Internal QS macro to output an unformatted time event /// tick-counter data element /// \note the counter size depends on the macro #QF_TIMEEVT_CTR_SIZE. #define QS_TEC_(ctr_) QS::u8_(ctr_) #elif (QF_TIMEEVT_CTR_SIZE == 2) #define QS_TEC_(ctr_) QS::u16_(ctr_) #elif (QF_TIMEEVT_CTR_SIZE == 4) #define QS_TEC_(ctr_) QS::u32_(ctr_) #endif #else // Q_SPY // qs_dummy.h ================================================================ #define QS_INIT(arg_) ((uint8_t)1) #define QS_EXIT() ((void)0) #define QS_DUMP() ((void)0) #define QS_FILTER_ON(rec_) ((void)0) #define QS_FILTER_OFF(rec_) ((void)0) #define QS_FILTER_SM_OBJ(obj_) ((void)0) #define QS_FILTER_AO_OBJ(obj_) ((void)0) #define QS_FILTER_MP_OBJ(obj_) ((void)0) #define QS_FILTER_EQ_OBJ(obj_) ((void)0) #define QS_FILTER_TE_OBJ(obj_) ((void)0) #define QS_FILTER_AP_OBJ(obj_) ((void)0) #define QS_GET_BYTE(pByte_) ((uint16_t)0xFFFF) #define QS_GET_BLOCK(pSize_) ((uint8_t *)0) #define QS_BEGIN(rec_, obj_) if (0) { #define QS_END() } #define QS_BEGIN_NOLOCK(rec_, obj_) if (0) { #define QS_END_NOLOCK() } #define QS_I8(width_, data_) ((void)0) #define QS_U8(width_, data_) ((void)0) #define QS_I16(width_, data_) ((void)0) #define QS_U16(width_, data_) ((void)0) #define QS_I32(width_, data_) ((void)0) #define QS_U32(width_, data_) ((void)0) #define QS_F32(width_, data_) ((void)0) #define QS_F64(width_, data_) ((void)0) #define QS_STR(str_) ((void)0) #define QS_STR_ROM(str_) ((void)0) #define QS_MEM(mem_, size_) ((void)0) #define QS_SIG(sig_, obj_) ((void)0) #define QS_OBJ(obj_) ((void)0) #define QS_FUN(fun_) ((void)0) #define QS_SIG_DICTIONARY(sig_, obj_) ((void)0) #define QS_OBJ_DICTIONARY(obj_) ((void)0) #define QS_FUN_DICTIONARY(fun_) ((void)0) #define QS_FLUSH() ((void)0) // internal QS macros used only in the QP components ......................... #define QS_INT_LOCK_KEY_ #define QS_BEGIN_(rec_, refObj_, obj_) if (0) { #define QS_END_() } #define QS_BEGIN_NOLOCK_(rec_, refObj_, obj_) if (0) { #define QS_END_NOLOCK_() } #define QS_U8_(data_) ((void)0) #define QS_U16_(data_) ((void)0) #define QS_U32_(data_) ((void)0) #define QS_TIME_() ((void)0) #define QS_SIG_(sig_) ((void)0) #define QS_EVS_(size_) ((void)0) #define QS_OBJ_(obj_) ((void)0) #define QS_FUN_(fun_) ((void)0) #define QS_EQC_(ctr_) ((void)0) #define QS_MPC_(ctr_) ((void)0) #define QS_MPS_(size_) ((void)0) #define QS_TEC_(ctr_) ((void)0) #define QF_QS_INT_LOCK() ((void)0) #define QF_QS_INT_UNLOCK() ((void)0) #define QF_QS_ISR_ENTRY(isrnest_, prio_) ((void)0) #define QF_QS_ISR_EXIT(isrnest_, prio_) ((void)0) #define QF_QS_ACTION(act_) ((void)0) #endif // Q_SPY ////////////////////////////////////////////////////////////////////////////// /** * \brief Customizable QP assertions. * * Defines customizable and memory-efficient assertions applicable to * embedded systems. This header file can be used in C, C++, and mixed C/C++ * programs. * * \note The preprocessor switch Q_NASSERT disables checking assertions. * In particular macros \ref Q_ASSERT, \ref Q_REQUIRE, \ref Q_ENSURE, * \ref Q_INVARIANT, and \ref Q_ERROR do NOT evaluate the test condition * passed as the argument to these macros. One notable exception is the * macro \ref Q_ALLEGE, that still evaluates the test condition, but does * not report assertion failures when the switch Q_NASSERT is defined. */ #ifdef Q_NASSERT /* Q_NASSERT defined--assertion checking disabled */ #define Q_DEFINE_THIS_FILE #define Q_DEFINE_THIS_MODULE(name_) #define Q_ASSERT(test_) ((void)0) #define Q_ALLEGE(test_) ((void)(test_)) #define Q_ERROR() ((void)0) #else /* Q_NASSERT not defined--assertion checking enabled */ #ifdef __cplusplus extern "C" { #endif /** callback invoked in case the condition passed to \ref Q_ASSERT, * \ref Q_REQUIRE, \ref Q_ENSURE, \ref Q_ERROR, or \ref Q_ALLEGE * evaluates to FALSE. * * \param file file name where the assertion failed * \param line line number at which the assertion failed */ /*lint -sem(Q_onAssert, r_no) Q_onAssert() never returns */ void Q_onAssert(char const Q_ROM * const Q_ROM_VAR file, int line); #ifdef __cplusplus } #endif /** Place this macro at the top of each C/C++ module to define the file * name string using __FILE__ (NOTE: __FILE__ might contain lengthy path * name). This file name will be used in reporting assertions in this file. */ #define Q_DEFINE_THIS_FILE \ static char const Q_ROM Q_ROM_VAR l_this_file[] = __FILE__; /** Place this macro at the top of each C/C++ module to define the module * name as the argument \a name_. This file name will be used in reporting * assertions in this file. */ #define Q_DEFINE_THIS_MODULE(name_) \ static char const Q_ROM Q_ROM_VAR l_this_file[] = #name_; /** General purpose assertion that makes sure the \a test_ argument is * TRUE. Calls the Q_onAssert() callback if the \a test_ evaluates * to FALSE. * \note the \a test_ is NOT evaluated if assertions are * disabled with the Q_NASSERT switch. */ #define Q_ASSERT(test_) \ if (test_) { \ } \ else (Q_onAssert(l_this_file, __LINE__)) /** General purpose assertion that ALWAYS evaluates the \a test_ * argument and calls the Q_onAssert() callback if the \a test_ * evaluates to FALSE. * \note the \a test_ argument IS always evaluated even when assertions are * disabled with the Q_NASSERT macro. When the Q_NASSERT macro is * defined, the Q_onAssert() callback is NOT called, even if the * \a test_ evaluates to FALSE. */ #define Q_ALLEGE(test_) Q_ASSERT(test_) /** Assertion that always calls the Q_onAssert() callback if * ever executed. * \note can be disabled with the Q_NASSERT switch. */ #define Q_ERROR() \ (Q_onAssert(l_this_file, __LINE__)) #endif /* Q_NASSERT */ /** Assertion that checks for a precondition. This macro is equivalent to * \ref Q_ASSERT, except the name provides a better documentation of the * intention of this assertion. */ #define Q_REQUIRE(test_) Q_ASSERT(test_) /** Assertion that checks for a postcondition. This macro is equivalent to * \ref Q_ASSERT, except the name provides a better documentation of the * intention of this assertion. */ #define Q_ENSURE(test_) Q_ASSERT(test_) /** Assertion that checks for an invariant. This macro is equivalent to * \ref Q_ASSERT, except the name provides a better documentation of the * intention of this assertion. */ #define Q_INVARIANT(test_) Q_ASSERT(test_) /** Compile-time assertion exploits the fact that in C/C++ a dimension of * an array cannot be negative. The following declaration causes a compilation * error if the compile-time expression (\a test_) is not TRUE. The assertion * has no runtime side effects. */ #define Q_ASSERT_COMPILE(test_) \ extern char Q_assert_compile[(test_) ? 1 : -1] #endif // qp_h