Daryl Tan Wei Guang
Dependencies: keypad SDHCFileSystem TextLCD mbed FPointer wave_player
scmRTOS/Common/OS_Kernel.h@0:57ece500234e, 2012-02-20 (annotated)
- Committer:
- daryl2110
- Date:
- Mon Feb 20 07:32:56 2012 +0000
- Revision:
- 0:57ece500234e
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| daryl2110 | 0:57ece500234e | 1 | //****************************************************************************** |
| daryl2110 | 0:57ece500234e | 2 | //* |
| daryl2110 | 0:57ece500234e | 3 | //* FULLNAME: Single-Chip Microcontroller Real-Time Operating System |
| daryl2110 | 0:57ece500234e | 4 | //* |
| daryl2110 | 0:57ece500234e | 5 | //* NICKNAME: scmRTOS |
| daryl2110 | 0:57ece500234e | 6 | //* |
| daryl2110 | 0:57ece500234e | 7 | //* PURPOSE: OS Kernel Header. Declarations And Definitions |
| daryl2110 | 0:57ece500234e | 8 | //* |
| daryl2110 | 0:57ece500234e | 9 | //* Version: 3.10 |
| daryl2110 | 0:57ece500234e | 10 | //* |
| daryl2110 | 0:57ece500234e | 11 | //* $Revision: 256 $ |
| daryl2110 | 0:57ece500234e | 12 | //* $Date:: 2010-01-22 #$ |
| daryl2110 | 0:57ece500234e | 13 | //* |
| daryl2110 | 0:57ece500234e | 14 | //* Copyright (c) 2003-2010, Harry E. Zhurov |
| daryl2110 | 0:57ece500234e | 15 | //* |
| daryl2110 | 0:57ece500234e | 16 | //* Permission is hereby granted, free of charge, to any person |
| daryl2110 | 0:57ece500234e | 17 | //* obtaining a copy of this software and associated documentation |
| daryl2110 | 0:57ece500234e | 18 | //* files (the "Software"), to deal in the Software without restriction, |
| daryl2110 | 0:57ece500234e | 19 | //* including without limitation the rights to use, copy, modify, merge, |
| daryl2110 | 0:57ece500234e | 20 | //* publish, distribute, sublicense, and/or sell copies of the Software, |
| daryl2110 | 0:57ece500234e | 21 | //* and to permit persons to whom the Software is furnished to do so, |
| daryl2110 | 0:57ece500234e | 22 | //* subject to the following conditions: |
| daryl2110 | 0:57ece500234e | 23 | //* |
| daryl2110 | 0:57ece500234e | 24 | //* The above copyright notice and this permission notice shall be included |
| daryl2110 | 0:57ece500234e | 25 | //* in all copies or substantial portions of the Software. |
| daryl2110 | 0:57ece500234e | 26 | //* |
| daryl2110 | 0:57ece500234e | 27 | //* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| daryl2110 | 0:57ece500234e | 28 | //* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| daryl2110 | 0:57ece500234e | 29 | //* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| daryl2110 | 0:57ece500234e | 30 | //* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| daryl2110 | 0:57ece500234e | 31 | //* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| daryl2110 | 0:57ece500234e | 32 | //* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH |
| daryl2110 | 0:57ece500234e | 33 | //* THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| daryl2110 | 0:57ece500234e | 34 | //* |
| daryl2110 | 0:57ece500234e | 35 | //* ================================================================= |
| daryl2110 | 0:57ece500234e | 36 | //* See http://scmrtos.sourceforge.net for documentation, latest |
| daryl2110 | 0:57ece500234e | 37 | //* information, license and contact details. |
| daryl2110 | 0:57ece500234e | 38 | //* ================================================================= |
| daryl2110 | 0:57ece500234e | 39 | //* |
| daryl2110 | 0:57ece500234e | 40 | //***************************************************************************** |
| daryl2110 | 0:57ece500234e | 41 | |
| daryl2110 | 0:57ece500234e | 42 | #ifndef OS_KERNEL_H |
| daryl2110 | 0:57ece500234e | 43 | #define OS_KERNEL_H |
| daryl2110 | 0:57ece500234e | 44 | |
| daryl2110 | 0:57ece500234e | 45 | #include <stddef.h> |
| daryl2110 | 0:57ece500234e | 46 | #include <commdefs.h> |
| daryl2110 | 0:57ece500234e | 47 | #include <usrlib.h> |
| daryl2110 | 0:57ece500234e | 48 | |
| daryl2110 | 0:57ece500234e | 49 | //------------------------------------------------------------------------------ |
| daryl2110 | 0:57ece500234e | 50 | |
| daryl2110 | 0:57ece500234e | 51 | //============================================================================== |
| daryl2110 | 0:57ece500234e | 52 | extern "C" void OS_Start(TStackItem* sp); |
| daryl2110 | 0:57ece500234e | 53 | |
| daryl2110 | 0:57ece500234e | 54 | #if scmRTOS_CONTEXT_SWITCH_SCHEME == 0 |
| daryl2110 | 0:57ece500234e | 55 | extern "C" void OS_ContextSwitcher(TStackItem** Curr_SP, TStackItem* Next_SP); |
| daryl2110 | 0:57ece500234e | 56 | #else |
| daryl2110 | 0:57ece500234e | 57 | extern "C" TStackItem* OS_ContextSwitchHook(TStackItem* sp); |
| daryl2110 | 0:57ece500234e | 58 | #endif |
| daryl2110 | 0:57ece500234e | 59 | |
| daryl2110 | 0:57ece500234e | 60 | //============================================================================== |
| daryl2110 | 0:57ece500234e | 61 | |
| daryl2110 | 0:57ece500234e | 62 | //------------------------------------------------------------------------------ |
| daryl2110 | 0:57ece500234e | 63 | // |
| daryl2110 | 0:57ece500234e | 64 | // |
| daryl2110 | 0:57ece500234e | 65 | // NAME : OS |
| daryl2110 | 0:57ece500234e | 66 | // |
| daryl2110 | 0:57ece500234e | 67 | // PURPOSE : Namespace for all OS stuff |
| daryl2110 | 0:57ece500234e | 68 | // |
| daryl2110 | 0:57ece500234e | 69 | // DESCRIPTION: Includes: Kernel, |
| daryl2110 | 0:57ece500234e | 70 | // Processes, |
| daryl2110 | 0:57ece500234e | 71 | // Mutexes, |
| daryl2110 | 0:57ece500234e | 72 | // Event Flags, |
| daryl2110 | 0:57ece500234e | 73 | // Byte-wide Channels, |
| daryl2110 | 0:57ece500234e | 74 | // Arbitrary-type Channels, |
| daryl2110 | 0:57ece500234e | 75 | // Messages |
| daryl2110 | 0:57ece500234e | 76 | // |
| daryl2110 | 0:57ece500234e | 77 | namespace OS |
| daryl2110 | 0:57ece500234e | 78 | { |
| daryl2110 | 0:57ece500234e | 79 | class TBaseProcess; |
| daryl2110 | 0:57ece500234e | 80 | |
| daryl2110 | 0:57ece500234e | 81 | INLINE inline void SetPrioTag(TProcessMap& pm, const TProcessMap PrioTag) { pm |= PrioTag; } |
| daryl2110 | 0:57ece500234e | 82 | INLINE inline void ClrPrioTag(TProcessMap& pm, const TProcessMap PrioTag) { pm &= ~PrioTag; } |
| daryl2110 | 0:57ece500234e | 83 | |
| daryl2110 | 0:57ece500234e | 84 | //-------------------------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 85 | // |
| daryl2110 | 0:57ece500234e | 86 | // NAME : TKernel |
| daryl2110 | 0:57ece500234e | 87 | // |
| daryl2110 | 0:57ece500234e | 88 | /// Implements kernel-level operations such as |
| daryl2110 | 0:57ece500234e | 89 | /// process management, process-level scheduling, |
| daryl2110 | 0:57ece500234e | 90 | /// ISR-level scheduling, system timing. |
| daryl2110 | 0:57ece500234e | 91 | // |
| daryl2110 | 0:57ece500234e | 92 | // DESCRIPTION: |
| daryl2110 | 0:57ece500234e | 93 | // |
| daryl2110 | 0:57ece500234e | 94 | // |
| daryl2110 | 0:57ece500234e | 95 | class TKernel |
| daryl2110 | 0:57ece500234e | 96 | { |
| daryl2110 | 0:57ece500234e | 97 | //----------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 98 | // |
| daryl2110 | 0:57ece500234e | 99 | // Declarations |
| daryl2110 | 0:57ece500234e | 100 | // |
| daryl2110 | 0:57ece500234e | 101 | |
| daryl2110 | 0:57ece500234e | 102 | |
| daryl2110 | 0:57ece500234e | 103 | friend class TISRW; |
| daryl2110 | 0:57ece500234e | 104 | friend class TISRW_SS; |
| daryl2110 | 0:57ece500234e | 105 | friend class TBaseProcess; |
| daryl2110 | 0:57ece500234e | 106 | friend class TMutex; |
| daryl2110 | 0:57ece500234e | 107 | friend class TEventFlag; |
| daryl2110 | 0:57ece500234e | 108 | friend class TChannel; |
| daryl2110 | 0:57ece500234e | 109 | friend class TBaseMessage; |
| daryl2110 | 0:57ece500234e | 110 | |
| daryl2110 | 0:57ece500234e | 111 | template<typename T, word size, class S> friend class channel; |
| daryl2110 | 0:57ece500234e | 112 | template<typename T> friend class message; |
| daryl2110 | 0:57ece500234e | 113 | |
| daryl2110 | 0:57ece500234e | 114 | friend void Run(); |
| daryl2110 | 0:57ece500234e | 115 | friend void WakeUpProcess(TBaseProcess& p); |
| daryl2110 | 0:57ece500234e | 116 | friend void ForceWakeUpProcess(TBaseProcess& p); |
| daryl2110 | 0:57ece500234e | 117 | friend inline bool IsProcessSleeping(const TBaseProcess& p); |
| daryl2110 | 0:57ece500234e | 118 | friend inline bool IsProcessSuspended(const TBaseProcess& p); |
| daryl2110 | 0:57ece500234e | 119 | friend inline dword GetTickCount(); |
| daryl2110 | 0:57ece500234e | 120 | |
| daryl2110 | 0:57ece500234e | 121 | //----------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 122 | // |
| daryl2110 | 0:57ece500234e | 123 | // Data |
| daryl2110 | 0:57ece500234e | 124 | // |
| daryl2110 | 0:57ece500234e | 125 | private: |
| daryl2110 | 0:57ece500234e | 126 | byte CurProcPriority; |
| daryl2110 | 0:57ece500234e | 127 | TProcessMap ReadyProcessMap; |
| daryl2110 | 0:57ece500234e | 128 | TBaseProcess* ProcessTable[scmRTOS_PROCESS_COUNT+1]; |
| daryl2110 | 0:57ece500234e | 129 | volatile byte ISR_NestCount; |
| daryl2110 | 0:57ece500234e | 130 | |
| daryl2110 | 0:57ece500234e | 131 | #if scmRTOS_CONTEXT_SWITCH_SCHEME == 1 |
| daryl2110 | 0:57ece500234e | 132 | byte SchedProcPriority; |
| daryl2110 | 0:57ece500234e | 133 | #endif |
| daryl2110 | 0:57ece500234e | 134 | |
| daryl2110 | 0:57ece500234e | 135 | #if scmRTOS_SYSTEM_TICKS_ENABLE == 1 |
| daryl2110 | 0:57ece500234e | 136 | volatile dword SysTickCount; |
| daryl2110 | 0:57ece500234e | 137 | #endif |
| daryl2110 | 0:57ece500234e | 138 | |
| daryl2110 | 0:57ece500234e | 139 | //----------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 140 | // |
| daryl2110 | 0:57ece500234e | 141 | // Functions |
| daryl2110 | 0:57ece500234e | 142 | // |
| daryl2110 | 0:57ece500234e | 143 | public: |
| daryl2110 | 0:57ece500234e | 144 | INLINE TKernel() |
| daryl2110 | 0:57ece500234e | 145 | : CurProcPriority(pr0) |
| daryl2110 | 0:57ece500234e | 146 | , ReadyProcessMap( (1 << (scmRTOS_PROCESS_COUNT + 1)) - 1) // set all processes ready |
| daryl2110 | 0:57ece500234e | 147 | , ISR_NestCount(0) |
| daryl2110 | 0:57ece500234e | 148 | { |
| daryl2110 | 0:57ece500234e | 149 | } |
| daryl2110 | 0:57ece500234e | 150 | |
| daryl2110 | 0:57ece500234e | 151 | private: |
| daryl2110 | 0:57ece500234e | 152 | INLINE inline void RegisterProcess(TBaseProcess* const p); |
| daryl2110 | 0:57ece500234e | 153 | |
| daryl2110 | 0:57ece500234e | 154 | void Sched(); |
| daryl2110 | 0:57ece500234e | 155 | INLINE void Scheduler() { if(ISR_NestCount) return; else Sched(); } |
| daryl2110 | 0:57ece500234e | 156 | INLINE inline void SchedISR(); |
| daryl2110 | 0:57ece500234e | 157 | |
| daryl2110 | 0:57ece500234e | 158 | #if scmRTOS_CONTEXT_SWITCH_SCHEME == 1 |
| daryl2110 | 0:57ece500234e | 159 | INLINE inline bool IsContextSwitchDone() const volatile; |
| daryl2110 | 0:57ece500234e | 160 | #endif |
| daryl2110 | 0:57ece500234e | 161 | INLINE void SetProcessReady (const byte pr) { TProcessMap PrioTag = GetPrioTag(pr); SetPrioTag( ReadyProcessMap, PrioTag); } |
| daryl2110 | 0:57ece500234e | 162 | INLINE void SetProcessUnready(const byte pr) { TProcessMap PrioTag = GetPrioTag(pr); ClrPrioTag( ReadyProcessMap, PrioTag); } |
| daryl2110 | 0:57ece500234e | 163 | |
| daryl2110 | 0:57ece500234e | 164 | public: |
| daryl2110 | 0:57ece500234e | 165 | INLINE inline void SystemTimer(); |
| daryl2110 | 0:57ece500234e | 166 | #if scmRTOS_CONTEXT_SWITCH_SCHEME == 1 |
| daryl2110 | 0:57ece500234e | 167 | INLINE inline TStackItem* ContextSwitchHook(TStackItem* sp); |
| daryl2110 | 0:57ece500234e | 168 | #endif |
| daryl2110 | 0:57ece500234e | 169 | |
| daryl2110 | 0:57ece500234e | 170 | }; // End of TKernel class definition |
| daryl2110 | 0:57ece500234e | 171 | //-------------------------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 172 | extern TKernel Kernel; |
| daryl2110 | 0:57ece500234e | 173 | |
| daryl2110 | 0:57ece500234e | 174 | //-------------------------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 175 | // |
| daryl2110 | 0:57ece500234e | 176 | /// BaseProcess |
| daryl2110 | 0:57ece500234e | 177 | /// |
| daryl2110 | 0:57ece500234e | 178 | /// Implements base class-type for application processes |
| daryl2110 | 0:57ece500234e | 179 | // |
| daryl2110 | 0:57ece500234e | 180 | // DESCRIPTION: |
| daryl2110 | 0:57ece500234e | 181 | // |
| daryl2110 | 0:57ece500234e | 182 | // |
| daryl2110 | 0:57ece500234e | 183 | class TBaseProcess |
| daryl2110 | 0:57ece500234e | 184 | { |
| daryl2110 | 0:57ece500234e | 185 | friend class TKernel; |
| daryl2110 | 0:57ece500234e | 186 | friend class TISRW; |
| daryl2110 | 0:57ece500234e | 187 | friend class TISRW_SS; |
| daryl2110 | 0:57ece500234e | 188 | friend class TEventFlag; |
| daryl2110 | 0:57ece500234e | 189 | friend class TMutex; |
| daryl2110 | 0:57ece500234e | 190 | friend class TBaseMessage; |
| daryl2110 | 0:57ece500234e | 191 | |
| daryl2110 | 0:57ece500234e | 192 | template<typename T, word size, class S> friend class channel; |
| daryl2110 | 0:57ece500234e | 193 | template<typename T> friend class message; |
| daryl2110 | 0:57ece500234e | 194 | |
| daryl2110 | 0:57ece500234e | 195 | |
| daryl2110 | 0:57ece500234e | 196 | friend void Run(); |
| daryl2110 | 0:57ece500234e | 197 | friend void WakeUpProcess(TBaseProcess& p); |
| daryl2110 | 0:57ece500234e | 198 | friend void ForceWakeUpProcess(TBaseProcess& p); |
| daryl2110 | 0:57ece500234e | 199 | friend bool IsProcessSleeping(const TBaseProcess& p); |
| daryl2110 | 0:57ece500234e | 200 | friend bool IsProcessSuspended(const TBaseProcess& p); |
| daryl2110 | 0:57ece500234e | 201 | |
| daryl2110 | 0:57ece500234e | 202 | public: |
| daryl2110 | 0:57ece500234e | 203 | #if SEPARATE_RETURN_STACK == 0 |
| daryl2110 | 0:57ece500234e | 204 | TBaseProcess( TStackItem* Stack, word stack_size, TPriority pr, void (*exec)() ); |
| daryl2110 | 0:57ece500234e | 205 | #else |
| daryl2110 | 0:57ece500234e | 206 | TBaseProcess( TStackItem* Stack, TStackItem* RStack, TPriority pr, void (*exec)() ); |
| daryl2110 | 0:57ece500234e | 207 | #endif |
| daryl2110 | 0:57ece500234e | 208 | |
| daryl2110 | 0:57ece500234e | 209 | static void Sleep(TTimeout timeout = 0); |
| daryl2110 | 0:57ece500234e | 210 | |
| daryl2110 | 0:57ece500234e | 211 | protected: |
| daryl2110 | 0:57ece500234e | 212 | TStackItem* StackPointer; |
| daryl2110 | 0:57ece500234e | 213 | word StackSize; |
| daryl2110 | 0:57ece500234e | 214 | TTimeout Timeout; |
| daryl2110 | 0:57ece500234e | 215 | TPriority Priority; |
| daryl2110 | 0:57ece500234e | 216 | |
| daryl2110 | 0:57ece500234e | 217 | }; |
| daryl2110 | 0:57ece500234e | 218 | //-------------------------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 219 | |
| daryl2110 | 0:57ece500234e | 220 | //-------------------------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 221 | // |
| daryl2110 | 0:57ece500234e | 222 | /// process |
| daryl2110 | 0:57ece500234e | 223 | /// |
| daryl2110 | 0:57ece500234e | 224 | /// Implements template for application processes instantiation |
| daryl2110 | 0:57ece500234e | 225 | // |
| daryl2110 | 0:57ece500234e | 226 | // DESCRIPTION: |
| daryl2110 | 0:57ece500234e | 227 | // |
| daryl2110 | 0:57ece500234e | 228 | // |
| daryl2110 | 0:57ece500234e | 229 | #if SEPARATE_RETURN_STACK == 0 |
| daryl2110 | 0:57ece500234e | 230 | |
| daryl2110 | 0:57ece500234e | 231 | template<TPriority pr, word stack_size> |
| daryl2110 | 0:57ece500234e | 232 | class process : public TBaseProcess |
| daryl2110 | 0:57ece500234e | 233 | { |
| daryl2110 | 0:57ece500234e | 234 | public: |
| daryl2110 | 0:57ece500234e | 235 | INLINE_PROCESS_CTOR process(); |
| daryl2110 | 0:57ece500234e | 236 | #ifdef DEBUG_STACK |
| daryl2110 | 0:57ece500234e | 237 | word UsedStackSize(); |
| daryl2110 | 0:57ece500234e | 238 | #endif //DEBUG_STACK |
| daryl2110 | 0:57ece500234e | 239 | OS_PROCESS static void Exec(); |
| daryl2110 | 0:57ece500234e | 240 | |
| daryl2110 | 0:57ece500234e | 241 | private: |
| daryl2110 | 0:57ece500234e | 242 | TStackItem Stack[stack_size/sizeof(TStackItem)]; |
| daryl2110 | 0:57ece500234e | 243 | }; |
| daryl2110 | 0:57ece500234e | 244 | |
| daryl2110 | 0:57ece500234e | 245 | template<TPriority pr, word stack_size> |
| daryl2110 | 0:57ece500234e | 246 | OS::process<pr, stack_size>::process() : TBaseProcess( &Stack[stack_size/sizeof(TStackItem)] |
| daryl2110 | 0:57ece500234e | 247 | , stack_size // debug |
| daryl2110 | 0:57ece500234e | 248 | , pr |
| daryl2110 | 0:57ece500234e | 249 | , reinterpret_cast<void (*)()>(Exec) ) |
| daryl2110 | 0:57ece500234e | 250 | { |
| daryl2110 | 0:57ece500234e | 251 | } |
| daryl2110 | 0:57ece500234e | 252 | #ifdef DEBUG_STACK |
| daryl2110 | 0:57ece500234e | 253 | template<TPriority pr, word stack_size> |
| daryl2110 | 0:57ece500234e | 254 | word process<pr,stack_size>::UsedStackSize() |
| daryl2110 | 0:57ece500234e | 255 | { |
| daryl2110 | 0:57ece500234e | 256 | TStackItem* Idx = Stack; |
| daryl2110 | 0:57ece500234e | 257 | while(*(Idx++) == STACK_FILL_CONST); |
| daryl2110 | 0:57ece500234e | 258 | return ((Stack + (StackSize/sizeof(TStackItem))) - Idx)*sizeof(TStackItem); |
| daryl2110 | 0:57ece500234e | 259 | } |
| daryl2110 | 0:57ece500234e | 260 | #endif //DEBUG_STACK |
| daryl2110 | 0:57ece500234e | 261 | #else |
| daryl2110 | 0:57ece500234e | 262 | |
| daryl2110 | 0:57ece500234e | 263 | template<TPriority pr, word stack_size, word rstack_size> |
| daryl2110 | 0:57ece500234e | 264 | class process : public TBaseProcess |
| daryl2110 | 0:57ece500234e | 265 | { |
| daryl2110 | 0:57ece500234e | 266 | public: |
| daryl2110 | 0:57ece500234e | 267 | INLINE_PROCESS_CTOR process(); |
| daryl2110 | 0:57ece500234e | 268 | |
| daryl2110 | 0:57ece500234e | 269 | OS_PROCESS static void Exec(); |
| daryl2110 | 0:57ece500234e | 270 | |
| daryl2110 | 0:57ece500234e | 271 | private: |
| daryl2110 | 0:57ece500234e | 272 | TStackItem Stack [stack_size/sizeof(TStackItem)]; |
| daryl2110 | 0:57ece500234e | 273 | TStackItem RStack[rstack_size/sizeof(TStackItem)]; |
| daryl2110 | 0:57ece500234e | 274 | }; |
| daryl2110 | 0:57ece500234e | 275 | |
| daryl2110 | 0:57ece500234e | 276 | template<TPriority pr, word stack_size, word rstack_size> |
| daryl2110 | 0:57ece500234e | 277 | process<pr, stack_size, rstack_size>::process() : TBaseProcess( &Stack[stack_size/sizeof(TStackItem)] |
| daryl2110 | 0:57ece500234e | 278 | , &RStack[rstack_size/sizeof(TStackItem)] |
| daryl2110 | 0:57ece500234e | 279 | , pr |
| daryl2110 | 0:57ece500234e | 280 | , reinterpret_cast<void (*)()>(Exec)) |
| daryl2110 | 0:57ece500234e | 281 | { |
| daryl2110 | 0:57ece500234e | 282 | } |
| daryl2110 | 0:57ece500234e | 283 | |
| daryl2110 | 0:57ece500234e | 284 | #endif |
| daryl2110 | 0:57ece500234e | 285 | //-------------------------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 286 | |
| daryl2110 | 0:57ece500234e | 287 | //-------------------------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 288 | // |
| daryl2110 | 0:57ece500234e | 289 | // Miscellaneous |
| daryl2110 | 0:57ece500234e | 290 | // |
| daryl2110 | 0:57ece500234e | 291 | // |
| daryl2110 | 0:57ece500234e | 292 | INLINE inline void Run(); |
| daryl2110 | 0:57ece500234e | 293 | INLINE inline void LockSystemTimer() { TCritSect cs; LOCK_SYSTEM_TIMER(); } |
| daryl2110 | 0:57ece500234e | 294 | INLINE inline void UnlockSystemTimer() { TCritSect cs; UNLOCK_SYSTEM_TIMER(); } |
| daryl2110 | 0:57ece500234e | 295 | void WakeUpProcess(TBaseProcess& p); |
| daryl2110 | 0:57ece500234e | 296 | void ForceWakeUpProcess(TBaseProcess& p); |
| daryl2110 | 0:57ece500234e | 297 | INLINE inline void Sleep(TTimeout t = 0) { TBaseProcess::Sleep(t); } |
| daryl2110 | 0:57ece500234e | 298 | |
| daryl2110 | 0:57ece500234e | 299 | INLINE inline bool IsProcessSleeping(const TBaseProcess& p) |
| daryl2110 | 0:57ece500234e | 300 | { |
| daryl2110 | 0:57ece500234e | 301 | TCritSect cs; |
| daryl2110 | 0:57ece500234e | 302 | if(p.Timeout) |
| daryl2110 | 0:57ece500234e | 303 | return true; |
| daryl2110 | 0:57ece500234e | 304 | else |
| daryl2110 | 0:57ece500234e | 305 | return false; |
| daryl2110 | 0:57ece500234e | 306 | } |
| daryl2110 | 0:57ece500234e | 307 | |
| daryl2110 | 0:57ece500234e | 308 | INLINE inline bool IsProcessSuspended(const TBaseProcess& p) |
| daryl2110 | 0:57ece500234e | 309 | { |
| daryl2110 | 0:57ece500234e | 310 | TCritSect cs; |
| daryl2110 | 0:57ece500234e | 311 | if(Kernel.ReadyProcessMap & GetPrioTag(p.Priority)) |
| daryl2110 | 0:57ece500234e | 312 | return false; |
| daryl2110 | 0:57ece500234e | 313 | else |
| daryl2110 | 0:57ece500234e | 314 | return true; |
| daryl2110 | 0:57ece500234e | 315 | } |
| daryl2110 | 0:57ece500234e | 316 | //-------------------------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 317 | |
| daryl2110 | 0:57ece500234e | 318 | #if scmRTOS_SYSTEM_TICKS_ENABLE == 1 |
| daryl2110 | 0:57ece500234e | 319 | INLINE inline dword GetTickCount() { TCritSect cs; return Kernel.SysTickCount; } |
| daryl2110 | 0:57ece500234e | 320 | #endif |
| daryl2110 | 0:57ece500234e | 321 | |
| daryl2110 | 0:57ece500234e | 322 | #if scmRTOS_SYSTIMER_HOOK_ENABLE == 1 |
| daryl2110 | 0:57ece500234e | 323 | INLINE_SYS_TIMER_HOOK void SystemTimerUserHook(); |
| daryl2110 | 0:57ece500234e | 324 | #endif |
| daryl2110 | 0:57ece500234e | 325 | |
| daryl2110 | 0:57ece500234e | 326 | #if scmRTOS_CONTEXT_SWITCH_USER_HOOK_ENABLE == 1 |
| daryl2110 | 0:57ece500234e | 327 | INLINE_CONTEXT_SWITCH_HOOK void ContextSwitchUserHook(); |
| daryl2110 | 0:57ece500234e | 328 | #endif |
| daryl2110 | 0:57ece500234e | 329 | |
| daryl2110 | 0:57ece500234e | 330 | } |
| daryl2110 | 0:57ece500234e | 331 | //------------------------------------------------------------------------------ |
| daryl2110 | 0:57ece500234e | 332 | |
| daryl2110 | 0:57ece500234e | 333 | //------------------------------------------------------------------------------ |
| daryl2110 | 0:57ece500234e | 334 | // |
| daryl2110 | 0:57ece500234e | 335 | /// Register Process |
| daryl2110 | 0:57ece500234e | 336 | /// |
| daryl2110 | 0:57ece500234e | 337 | /// Places pointer to process in kernel's process table |
| daryl2110 | 0:57ece500234e | 338 | // |
| daryl2110 | 0:57ece500234e | 339 | void OS::TKernel::RegisterProcess(OS::TBaseProcess* const p) |
| daryl2110 | 0:57ece500234e | 340 | { |
| daryl2110 | 0:57ece500234e | 341 | ProcessTable[p->Priority] = p; |
| daryl2110 | 0:57ece500234e | 342 | } |
| daryl2110 | 0:57ece500234e | 343 | //------------------------------------------------------------------------------ |
| daryl2110 | 0:57ece500234e | 344 | // |
| daryl2110 | 0:57ece500234e | 345 | /// System Timer Implementation |
| daryl2110 | 0:57ece500234e | 346 | /// |
| daryl2110 | 0:57ece500234e | 347 | /// Performs process's timeouts checking and |
| daryl2110 | 0:57ece500234e | 348 | /// moving processes to ready-to-run state |
| daryl2110 | 0:57ece500234e | 349 | // |
| daryl2110 | 0:57ece500234e | 350 | void OS::TKernel::SystemTimer() |
| daryl2110 | 0:57ece500234e | 351 | { |
| daryl2110 | 0:57ece500234e | 352 | SYS_TIMER_CRIT_SECT(); |
| daryl2110 | 0:57ece500234e | 353 | #if scmRTOS_SYSTEM_TICKS_ENABLE == 1 |
| daryl2110 | 0:57ece500234e | 354 | SysTickCount++; |
| daryl2110 | 0:57ece500234e | 355 | #endif |
| daryl2110 | 0:57ece500234e | 356 | |
| daryl2110 | 0:57ece500234e | 357 | #if scmRTOS_PRIORITY_ORDER == 0 |
| daryl2110 | 0:57ece500234e | 358 | const byte BaseIndex = 0; |
| daryl2110 | 0:57ece500234e | 359 | #else |
| daryl2110 | 0:57ece500234e | 360 | const byte BaseIndex = 1; |
| daryl2110 | 0:57ece500234e | 361 | #endif |
| daryl2110 | 0:57ece500234e | 362 | |
| daryl2110 | 0:57ece500234e | 363 | for(byte i = BaseIndex; i < (scmRTOS_PROCESS_COUNT + BaseIndex); i++) |
| daryl2110 | 0:57ece500234e | 364 | { |
| daryl2110 | 0:57ece500234e | 365 | TBaseProcess* p = ProcessTable[i]; |
| daryl2110 | 0:57ece500234e | 366 | |
| daryl2110 | 0:57ece500234e | 367 | if(p->Timeout > 0) |
| daryl2110 | 0:57ece500234e | 368 | { |
| daryl2110 | 0:57ece500234e | 369 | if(--p->Timeout == 0) |
| daryl2110 | 0:57ece500234e | 370 | { |
| daryl2110 | 0:57ece500234e | 371 | SetProcessReady(p->Priority); |
| daryl2110 | 0:57ece500234e | 372 | } |
| daryl2110 | 0:57ece500234e | 373 | } |
| daryl2110 | 0:57ece500234e | 374 | } |
| daryl2110 | 0:57ece500234e | 375 | } |
| daryl2110 | 0:57ece500234e | 376 | //------------------------------------------------------------------------------ |
| daryl2110 | 0:57ece500234e | 377 | // |
| daryl2110 | 0:57ece500234e | 378 | /// ISR optimized scheduler |
| daryl2110 | 0:57ece500234e | 379 | /// |
| daryl2110 | 0:57ece500234e | 380 | /// !!! IMPORTANT: This function must be call from ISR services only !!! |
| daryl2110 | 0:57ece500234e | 381 | // |
| daryl2110 | 0:57ece500234e | 382 | // |
| daryl2110 | 0:57ece500234e | 383 | #if scmRTOS_CONTEXT_SWITCH_SCHEME == 0 |
| daryl2110 | 0:57ece500234e | 384 | void OS::TKernel::SchedISR() |
| daryl2110 | 0:57ece500234e | 385 | { |
| daryl2110 | 0:57ece500234e | 386 | byte NextPrty = GetHighPriority(ReadyProcessMap); |
| daryl2110 | 0:57ece500234e | 387 | if(NextPrty != CurProcPriority) |
| daryl2110 | 0:57ece500234e | 388 | { |
| daryl2110 | 0:57ece500234e | 389 | TStackItem* Next_SP = ProcessTable[NextPrty]->StackPointer; |
| daryl2110 | 0:57ece500234e | 390 | TStackItem** Curr_SP_addr = &(ProcessTable[CurProcPriority]->StackPointer); |
| daryl2110 | 0:57ece500234e | 391 | CurProcPriority = NextPrty; |
| daryl2110 | 0:57ece500234e | 392 | OS_ContextSwitcher(Curr_SP_addr, Next_SP); |
| daryl2110 | 0:57ece500234e | 393 | } |
| daryl2110 | 0:57ece500234e | 394 | } |
| daryl2110 | 0:57ece500234e | 395 | #else |
| daryl2110 | 0:57ece500234e | 396 | void OS::TKernel::SchedISR() |
| daryl2110 | 0:57ece500234e | 397 | { |
| daryl2110 | 0:57ece500234e | 398 | byte NextPrty = GetHighPriority(ReadyProcessMap); |
| daryl2110 | 0:57ece500234e | 399 | if(NextPrty != CurProcPriority) |
| daryl2110 | 0:57ece500234e | 400 | { |
| daryl2110 | 0:57ece500234e | 401 | SchedProcPriority = NextPrty; |
| daryl2110 | 0:57ece500234e | 402 | RaiseContextSwitch(); |
| daryl2110 | 0:57ece500234e | 403 | } |
| daryl2110 | 0:57ece500234e | 404 | } |
| daryl2110 | 0:57ece500234e | 405 | //------------------------------------------------------------------------------ |
| daryl2110 | 0:57ece500234e | 406 | bool OS::TKernel::IsContextSwitchDone() const volatile |
| daryl2110 | 0:57ece500234e | 407 | { |
| daryl2110 | 0:57ece500234e | 408 | byte cur = CurProcPriority; ///< reading to temporary vars is performed due to |
| daryl2110 | 0:57ece500234e | 409 | byte sched = SchedProcPriority; ///< suppress warning about order of volatile access |
| daryl2110 | 0:57ece500234e | 410 | return cur == sched; |
| daryl2110 | 0:57ece500234e | 411 | } |
| daryl2110 | 0:57ece500234e | 412 | //------------------------------------------------------------------------------ |
| daryl2110 | 0:57ece500234e | 413 | TStackItem* OS::TKernel::ContextSwitchHook(TStackItem* sp) |
| daryl2110 | 0:57ece500234e | 414 | { |
| daryl2110 | 0:57ece500234e | 415 | ProcessTable[CurProcPriority]->StackPointer = sp; |
| daryl2110 | 0:57ece500234e | 416 | sp = ProcessTable[SchedProcPriority]->StackPointer; |
| daryl2110 | 0:57ece500234e | 417 | |
| daryl2110 | 0:57ece500234e | 418 | #if scmRTOS_CONTEXT_SWITCH_USER_HOOK_ENABLE == 1 |
| daryl2110 | 0:57ece500234e | 419 | ContextSwitchUserHook(); |
| daryl2110 | 0:57ece500234e | 420 | #endif |
| daryl2110 | 0:57ece500234e | 421 | |
| daryl2110 | 0:57ece500234e | 422 | CurProcPriority = SchedProcPriority; |
| daryl2110 | 0:57ece500234e | 423 | return sp; |
| daryl2110 | 0:57ece500234e | 424 | } |
| daryl2110 | 0:57ece500234e | 425 | //------------------------------------------------------------------------------ |
| daryl2110 | 0:57ece500234e | 426 | #endif // scmRTOS_CONTEXT_SWITCH_SCHEME |
| daryl2110 | 0:57ece500234e | 427 | |
| daryl2110 | 0:57ece500234e | 428 | //----------------------------------------------------------------------------- |
| daryl2110 | 0:57ece500234e | 429 | /// Start Operation |
| daryl2110 | 0:57ece500234e | 430 | INLINE inline void OS::Run() |
| daryl2110 | 0:57ece500234e | 431 | { |
| daryl2110 | 0:57ece500234e | 432 | TStackItem* sp = Kernel.ProcessTable[pr0]->StackPointer; |
| daryl2110 | 0:57ece500234e | 433 | OS_Start(sp); |
| daryl2110 | 0:57ece500234e | 434 | } |
| daryl2110 | 0:57ece500234e | 435 | |
| daryl2110 | 0:57ece500234e | 436 | #include <OS_Services.h> |
| daryl2110 | 0:57ece500234e | 437 | |
| daryl2110 | 0:57ece500234e | 438 | #endif // OS_KERNEL_H |
| daryl2110 | 0:57ece500234e | 439 |