Diff: mbed-rtos/rtos/Thread.cpp

Revision:

0:f9b6112278fe

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-rtos/rtos/Thread.cpp	Sat Jun 18 10:49:12 2016 +0000
@@ -0,0 +1,182 @@
+/* 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.
+ */
+#include "Thread.h"
+
+#include "mbed_error.h"
+#include "rtos_idle.h"
+
+// rt_tid2ptcb is an internal function which we exposed to get TCB for thread id
+#undef NULL  //Workaround for conflicting macros in rt_TypeDef.h and stdio.h
+#include "rt_TypeDef.h"
+
+extern "C" P_TCB rt_tid2ptcb(osThreadId thread_id);
+
+namespace rtos {
+
+Thread::Thread(void (*task)(void const *argument), void *argument,
+        osPriority priority, uint32_t stack_size, unsigned char *stack_pointer) {
+#if defined(__MBED_CMSIS_RTOS_CA9) || defined(__MBED_CMSIS_RTOS_CM)
+    _thread_def.pthread = task;
+    _thread_def.tpriority = priority;
+    _thread_def.stacksize = stack_size;
+    if (stack_pointer != NULL) {
+        _thread_def.stack_pointer = (uint32_t*)stack_pointer;
+        _dynamic_stack = false;
+    } else {
+        _thread_def.stack_pointer = new uint32_t[stack_size/sizeof(uint32_t)];
+        if (_thread_def.stack_pointer == NULL)
+            error("Error allocating the stack memory\n");
+        _dynamic_stack = true;
+    }
+    
+    //Fill the stack with a magic word for maximum usage checking
+    for (uint32_t i = 0; i < (stack_size / sizeof(uint32_t)); i++) {
+        _thread_def.stack_pointer[i] = 0xE25A2EA5;
+    }
+#endif
+    _tid = osThreadCreate(&_thread_def, argument);
+}
+
+osStatus Thread::terminate() {
+    return osThreadTerminate(_tid);
+}
+
+osStatus Thread::set_priority(osPriority priority) {
+    return osThreadSetPriority(_tid, priority);
+}
+
+osPriority Thread::get_priority() {
+    return osThreadGetPriority(_tid);
+}
+
+int32_t Thread::signal_set(int32_t signals) {
+    return osSignalSet(_tid, signals);
+}
+
+int32_t Thread::signal_clr(int32_t signals) {
+    return osSignalClear(_tid, signals);
+}
+
+Thread::State Thread::get_state() {
+#if !defined(__MBED_CMSIS_RTOS_CA9) && !defined(__MBED_CMSIS_RTOS_CM)
+#ifdef CMSIS_OS_RTX
+    return ((State)_thread_def.tcb.state);
+#endif
+#else
+    uint8_t status;
+    status = osThreadGetState(_tid);
+    return ((State)status);
+#endif
+}
+
+uint32_t Thread::stack_size() {
+#ifndef __MBED_CMSIS_RTOS_CA9
+#if defined(CMSIS_OS_RTX) && !defined(__MBED_CMSIS_RTOS_CM)
+    return _thread_def.tcb.priv_stack;
+#else
+    P_TCB tcb = rt_tid2ptcb(_tid);
+    return tcb->priv_stack;
+#endif
+#else
+    return 0;
+#endif
+}
+
+uint32_t Thread::free_stack() {
+#ifndef __MBED_CMSIS_RTOS_CA9
+#if defined(CMSIS_OS_RTX) && !defined(__MBED_CMSIS_RTOS_CM)
+    uint32_t bottom = (uint32_t)_thread_def.tcb.stack;
+    return _thread_def.tcb.tsk_stack - bottom;
+#else
+    P_TCB tcb = rt_tid2ptcb(_tid);
+    uint32_t bottom = (uint32_t)tcb->stack;
+    return tcb->tsk_stack - bottom;
+#endif
+#else
+    return 0;
+#endif
+}
+
+uint32_t Thread::used_stack() {
+#ifndef __MBED_CMSIS_RTOS_CA9
+#if defined(CMSIS_OS_RTX) && !defined(__MBED_CMSIS_RTOS_CM)
+    uint32_t top = (uint32_t)_thread_def.tcb.stack + _thread_def.tcb.priv_stack;
+    return top - _thread_def.tcb.tsk_stack;
+#else
+    P_TCB tcb = rt_tid2ptcb(_tid);
+    uint32_t top = (uint32_t)tcb->stack + tcb->priv_stack;
+    return top - tcb->tsk_stack;
+#endif
+#else
+    return 0;
+#endif
+}
+
+uint32_t Thread::max_stack() {
+#ifndef __MBED_CMSIS_RTOS_CA9
+#if defined(CMSIS_OS_RTX) && !defined(__MBED_CMSIS_RTOS_CM)
+    uint32_t high_mark = 0;
+    while (_thread_def.tcb.stack[high_mark] == 0xE25A2EA5)
+        high_mark++;
+    return _thread_def.tcb.priv_stack - (high_mark * 4);
+#else
+    P_TCB tcb = rt_tid2ptcb(_tid);
+    uint32_t high_mark = 0;
+    while (tcb->stack[high_mark] == 0xE25A2EA5)
+        high_mark++;
+    return tcb->priv_stack - (high_mark * 4);
+#endif
+#else
+    return 0;
+#endif
+}
+
+osEvent Thread::signal_wait(int32_t signals, uint32_t millisec) {
+    return osSignalWait(signals, millisec);
+}
+
+osStatus Thread::wait(uint32_t millisec) {
+    return osDelay(millisec);
+}
+
+osStatus Thread::yield() {
+    return osThreadYield();
+}
+
+osThreadId Thread::gettid() {
+    return osThreadGetId();
+}
+
+void Thread::attach_idle_hook(void (*fptr)(void)) {
+    rtos_attach_idle_hook(fptr);
+}
+
+Thread::~Thread() {
+    terminate();
+#ifdef __MBED_CMSIS_RTOS_CM
+    if (_dynamic_stack) {
+        delete[] (_thread_def.stack_pointer);
+    }
+#endif
+}
+
+}