Lab4 RTOS
Fork of mbed-rtos by
rtos/Thread.h
- Committer:
- mbed_official
- Date:
- 2015-05-05
- Revision:
- 76:85a52b7ef44b
- Parent:
- 31:015df9e602b6
- Child:
- 84:143955ffb790
File content as of revision 76:85a52b7ef44b:
/* mbed Microcontroller Library * Copyright (c) 2006-2012 ARM Limited * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef THREAD_H #define THREAD_H #include <stdint.h> #include "cmsis_os.h" namespace rtos { /** The Thread class allow defining, creating, and controlling thread functions in the system. */ class Thread { public: /** Create a new thread, and start it executing the specified function. @param task function to be executed by this thread. @param argument pointer that is passed to the thread function as start argument. (default: NULL). @param priority initial priority of the thread function. (default: osPriorityNormal). @param stack_size stack size (in bytes) requirements for the thread function. (default: DEFAULT_STACK_SIZE). @param stack_pointer pointer to the stack area to be used by this thread (default: NULL). */ Thread(void (*task)(void const *argument), void *argument=NULL, osPriority priority=osPriorityNormal, uint32_t stack_size=DEFAULT_STACK_SIZE, unsigned char *stack_pointer=NULL); /** Terminate execution of a thread and remove it from Active Threads @return status code that indicates the execution status of the function. */ osStatus terminate(); /** Set priority of an active thread @param priority new priority value for the thread function. @return status code that indicates the execution status of the function. */ osStatus set_priority(osPriority priority); /** Get priority of an active thread @return current priority value of the thread function. */ osPriority get_priority(); /** Set the specified Signal Flags of an active thread. @param signals specifies the signal flags of the thread that should be set. @return previous signal flags of the specified thread or 0x80000000 in case of incorrect parameters. */ int32_t signal_set(int32_t signals); /** Clears the specified Signal Flags of an active thread. @param signals specifies the signal flags of the thread that should be cleared. @return resultant signal flags of the specified thread or 0x80000000 in case of incorrect parameters. */ int32_t signal_clr(int32_t signals); /** State of the Thread */ enum State { Inactive, /**< Not created or terminated */ Ready, /**< Ready to run */ Running, /**< Running */ WaitingDelay, /**< Waiting for a delay to occur */ WaitingInterval, /**< Waiting for an interval to occur */ WaitingOr, /**< Waiting for one event in a set to occur */ WaitingAnd, /**< Waiting for multiple events in a set to occur */ WaitingSemaphore, /**< Waiting for a semaphore event to occur */ WaitingMailbox, /**< Waiting for a mailbox event to occur */ WaitingMutex, /**< Waiting for a mutex event to occur */ }; /** State of this Thread @return the State of this Thread */ State get_state(); /** Wait for one or more Signal Flags to become signaled for the current RUNNING thread. @param signals wait until all specified signal flags set or 0 for any single signal flag. @param millisec timeout value or 0 in case of no time-out. (default: osWaitForever). @return event flag information or error code. */ static osEvent signal_wait(int32_t signals, uint32_t millisec=osWaitForever); /** Wait for a specified time period in millisec: @param millisec time delay value @return status code that indicates the execution status of the function. */ static osStatus wait(uint32_t millisec); /** Pass control to next thread that is in state READY. @return status code that indicates the execution status of the function. */ static osStatus yield(); /** Get the thread id of the current running thread. @return thread ID for reference by other functions or NULL in case of error. */ static osThreadId gettid(); virtual ~Thread(); private: osThreadId _tid; osThreadDef_t _thread_def; bool _dynamic_stack; }; } #endif