tool/mbed/mbed-sdk/libraries/rtos/rtos/Thread.cpp

   1 /* mbed Microcontroller Library
   2  * Copyright (c) 2006-2012 ARM Limited
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22 #include "Thread.h"
  23
  24 #include "mbed_error.h"
  25
  26 namespace rtos {
  27
  28 Thread::Thread(void (*task)(void const *argument), void *argument,
  29         osPriority priority, uint32_t stack_size, unsigned char *stack_pointer) {
  30 #ifdef CMSIS_OS_RTX
  31     _thread_def.pthread = task;
  32     _thread_def.tpriority = priority;
  33     _thread_def.stacksize = stack_size;
  34 #ifndef __MBED_CMSIS_RTOS_CA9
  35     if (stack_pointer != NULL) {
  36         _thread_def.stack_pointer = (uint32_t*)stack_pointer;
  37         _dynamic_stack = false;
  38     } else {
  39         _thread_def.stack_pointer = new uint32_t[stack_size/sizeof(uint32_t)];
  40         if (_thread_def.stack_pointer == NULL)
  41             error("Error allocating the stack memory\n");
  42         _dynamic_stack = true;
  43     }
  44 #endif
  45 #endif
  46     _tid = osThreadCreate(&_thread_def, argument);
  47 }
  48
  49 osStatus Thread::terminate() {
  50     return osThreadTerminate(_tid);
  51 }
  52
  53 osStatus Thread::set_priority(osPriority priority) {
  54     return osThreadSetPriority(_tid, priority);
  55 }
  56
  57 osPriority Thread::get_priority() {
  58     return osThreadGetPriority(_tid);
  59 }
  60
  61 int32_t Thread::signal_set(int32_t signals) {
  62     return osSignalSet(_tid, signals);
  63 }
  64
  65 Thread::State Thread::get_state() {
  66 #ifndef __MBED_CMSIS_RTOS_CA9
  67     return ((State)_thread_def.tcb.state);
  68 #else
  69     uint8_t status;
  70     status = osThreadGetState(_tid);
  71     return ((State)status);
  72 #endif
  73 }
  74
  75 osEvent Thread::signal_wait(int32_t signals, uint32_t millisec) {
  76     return osSignalWait(signals, millisec);
  77 }
  78
  79 osStatus Thread::wait(uint32_t millisec) {
  80     return osDelay(millisec);
  81 }
  82
  83 osStatus Thread::yield() {
  84     return osThreadYield();
  85 }
  86
  87 osThreadId Thread::gettid() {
  88     return osThreadGetId();
  89 }
  90
  91 Thread::~Thread() {
  92     terminate();
  93 #ifndef __MBED_CMSIS_RTOS_CA9
  94     if (_dynamic_stack) {
  95         delete[] (_thread_def.stack_pointer);
  96     }
  97 #endif
  98 }
  99
 100 }