esp-idf/components/freertos/port_common.c

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/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <string.h>
#include "FreeRTOS.h"
#include "task.h"
#include "esp_system.h"
#include "esp_memory_utils.h"
#include "sdkconfig.h"
/* ----------------------------------------- Port Implementations (Common) --------------------------------------------
* - Common FreeRTOS port function implementations
* - These functions are common to all FreeRTOS ports (i.e., on all architectures and all FreeRTOS implementations).
* ------------------------------------------------------------------------------------------------------------------ */
// ------------- FreeRTOS Static Allocation ----------------
/*
These function are required by FreeRTOS when configSUPPORT_STATIC_ALLOCATION is
enabled and is used by FreeRTOS to obtain memory for its IDLE/Timer tasks.
We simply allocate the IDLE/Timer tasks memory from the FreeRTOS heap.
*/
#if ( configSUPPORT_STATIC_ALLOCATION == 1 )
void vApplicationGetIdleTaskMemory(StaticTask_t **ppxIdleTaskTCBBuffer,
StackType_t **ppxIdleTaskStackBuffer,
uint32_t *pulIdleTaskStackSize )
{
StaticTask_t *pxTCBBufferTemp;
StackType_t *pxStackBufferTemp;
/* Allocate TCB and stack buffer from the FreeRTOS heap
*
* If the stack grows down then allocate the stack then the TCB so the stack
* does not grow into the TCB. Likewise if the stack grows up then allocate
* the TCB then the stack. */
#if (portSTACK_GROWTH > 0)
{
pxTCBBufferTemp = pvPortMalloc(sizeof(StaticTask_t));
pxStackBufferTemp = pvPortMalloc(configMINIMAL_STACK_SIZE);
}
#else /* portSTACK_GROWTH */
{
pxStackBufferTemp = pvPortMalloc(configMINIMAL_STACK_SIZE);
pxTCBBufferTemp = pvPortMalloc(sizeof(StaticTask_t));
}
#endif /* portSTACK_GROWTH */
assert(pxTCBBufferTemp != NULL);
assert(pxStackBufferTemp != NULL);
//Write back pointers
*ppxIdleTaskTCBBuffer = pxTCBBufferTemp;
*ppxIdleTaskStackBuffer = pxStackBufferTemp;
*pulIdleTaskStackSize = configMINIMAL_STACK_SIZE;
}
void vApplicationGetTimerTaskMemory(StaticTask_t **ppxTimerTaskTCBBuffer,
StackType_t **ppxTimerTaskStackBuffer,
uint32_t *pulTimerTaskStackSize )
{
StaticTask_t *pxTCBBufferTemp;
StackType_t *pxStackBufferTemp;
/* Allocate TCB and stack buffer from the FreeRTOS heap
*
* If the stack grows down then allocate the stack then the TCB so the stack
* does not grow into the TCB. Likewise if the stack grows up then allocate
* the TCB then the stack. */
#if (portSTACK_GROWTH > 0)
{
pxTCBBufferTemp = pvPortMalloc(sizeof(StaticTask_t));
pxStackBufferTemp = pvPortMalloc(configTIMER_TASK_STACK_DEPTH);
}
#else /* portSTACK_GROWTH */
{
pxStackBufferTemp = pvPortMalloc(configTIMER_TASK_STACK_DEPTH);
pxTCBBufferTemp = pvPortMalloc(sizeof(StaticTask_t));
}
#endif /* portSTACK_GROWTH */
assert(pxTCBBufferTemp != NULL);
assert(pxStackBufferTemp != NULL);
//Write back pointers
*ppxTimerTaskTCBBuffer = pxTCBBufferTemp;
*ppxTimerTaskStackBuffer = pxStackBufferTemp;
*pulTimerTaskStackSize = configTIMER_TASK_STACK_DEPTH;
}
#endif // configSUPPORT_STATIC_ALLOCATION == 1