#include <stdlib.h>
#include "FreeRTOS.h"
#include "task.h"

Data Structures
struct	A_BLOCK_LINK

Macros
#define	heapBITS_PER_BYTE ( ( size_t ) 8 )

#define	heapMINIMUM_BLOCK_SIZE ( ( size_t ) ( xHeapStructSize << 1 ) )

#define	MPU_WRAPPERS_INCLUDED_FROM_API_FILE

Typedefs
typedef struct A_BLOCK_LINK	BlockLink_t

Functions
static void	prvHeapInit (void)

static void	prvInsertBlockIntoFreeList (BlockLink_t *pxBlockToInsert)

void *	pvPortMalloc (size_t xWantedSize)

void	vApplicationMallocFailedHook (void)

void	vPortFree (void *pv)

void	vPortInitialiseBlocks (void)

size_t	xPortGetFreeHeapSize (void)

size_t	xPortGetMinimumEverFreeHeapSize (void)

Variables
static BlockLink_t *	pxEnd = NULL

static uint8_t	ucHeap [configTOTAL_HEAP_SIZE]

static size_t	xBlockAllocatedBit = 0

static size_t	xFreeBytesRemaining = 0U

static const size_t	xHeapStructSize = ( sizeof( BlockLink_t ) + ( ( size_t ) ( portBYTE_ALIGNMENT - 1 ) ) ) & ~( ( size_t ) portBYTE_ALIGNMENT_MASK )

static size_t	xMinimumEverFreeBytesRemaining = 0U

static BlockLink_t	xStart

#define heapBITS_PER_BYTE ( ( size_t ) 8 )

Referenced by prvHeapInit().

#define heapMINIMUM_BLOCK_SIZE ( ( size_t ) ( xHeapStructSize << 1 ) )

Referenced by pvPortMalloc().

#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE

typedef struct A_BLOCK_LINK BlockLink_t

static void prvHeapInit ( void )

static

References configTOTAL_HEAP_SIZE, heapBITS_PER_BYTE, NULL, pxEnd, A_BLOCK_LINK::pxNextFreeBlock, ucHeap, A_BLOCK_LINK::xBlockSize, xHeapStructSize, and xTotalHeapSize.

Referenced by pvPortMalloc().

static void prvInsertBlockIntoFreeList ( BlockLink_t * pxBlockToInsert )

static

References mtCOVERAGE_TEST_MARKER, pxEnd, A_BLOCK_LINK::pxNextFreeBlock, and A_BLOCK_LINK::xBlockSize.

Referenced by pvPortMalloc(), and vPortFree().

void* pvPortMalloc ( size_t xWantedSize )

References configASSERT, heapMINIMUM_BLOCK_SIZE, mtCOVERAGE_TEST_MARKER, NULL, prvHeapInit(), prvInsertBlockIntoFreeList(), A_BLOCK_LINK::pxNextFreeBlock, traceMALLOC, vApplicationMallocFailedHook(), vTaskSuspendAll(), xBlockAllocatedBit, A_BLOCK_LINK::xBlockSize, xFreeBytesRemaining, xHeapStructSize, xStart, and xTaskResumeAll().

void vApplicationMallocFailedHook ( void )

vApplicationMallocFailedHook() will only be called if configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook function that will get called if a call to pvPortMalloc() fails. pvPortMalloc() is called internally by the kernel whenever a task, queue, timer or semaphore is created. It is also called by various parts of the demo application. If heap_1.c or heap_2.c are used, then the size of the heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used to query the size of free heap space that remains (although it does not provide information on how the remaining heap might be fragmented).