freertos-7.5.2/Source/portable/MemMang/heap_4.c File Reference

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

Data Structures
struct	A_BLOCK_LINK

Macros
#define	heapADJUSTED_HEAP_SIZE   ( configTOTAL_HEAP_SIZE - portBYTE_ALIGNMENT )
#define	heapBITS_PER_BYTE   ( ( size_t ) 8 )
#define	heapMINIMUM_BLOCK_SIZE   ( ( size_t ) ( heapSTRUCT_SIZE * 2 ) )
#define	MPU_WRAPPERS_INCLUDED_FROM_API_FILE

Typedefs
typedef struct A_BLOCK_LINK	xBlockLink

Functions
static void	prvHeapInit (void)
static void	prvInsertBlockIntoFreeList (xBlockLink *pxBlockToInsert)
void *	pvPortMalloc (size_t xWantedSize)
void	vPortFree (void *pv)
void	vPortInitialiseBlocks (void)
size_t	xPortGetFreeHeapSize (void)

Variables
static const unsigned short	heapSTRUCT_SIZE = ( ( sizeof ( xBlockLink ) + ( portBYTE_ALIGNMENT - 1 ) ) & ~portBYTE_ALIGNMENT_MASK )
static xBlockLink *	pxEnd = NULL
static unsigned char	ucHeap [configTOTAL_HEAP_SIZE]
static size_t	xBlockAllocatedBit = 0
static size_t	xFreeBytesRemaining = ( ( size_t ) heapADJUSTED_HEAP_SIZE ) & ( ( size_t ) ~portBYTE_ALIGNMENT_MASK )
static xBlockLink	xStart
static const size_t	xTotalHeapSize = ( ( size_t ) heapADJUSTED_HEAP_SIZE ) & ( ( size_t ) ~portBYTE_ALIGNMENT_MASK )

#define heapADJUSTED_HEAP_SIZE   ( configTOTAL_HEAP_SIZE - portBYTE_ALIGNMENT )

#define heapBITS_PER_BYTE   ( ( size_t ) 8 )

Referenced by prvHeapInit().

#define heapMINIMUM_BLOCK_SIZE   ( ( size_t ) ( heapSTRUCT_SIZE * 2 ) )

Referenced by pvPortMalloc().

#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE

typedef struct A_BLOCK_LINK xBlockLink

static void prvHeapInit ( void  )

static

References configASSERT, heapBITS_PER_BYTE, heapSTRUCT_SIZE, NULL, portPOINTER_SIZE_TYPE, pxEnd, A_BLOCK_LINK::pxNextFreeBlock, ucHeap, A_BLOCK_LINK::xBlockSize, and xTotalHeapSize.

Referenced by pvPortMalloc().

static void prvInsertBlockIntoFreeList ( xBlockLink *  pxBlockToInsert )

static

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

Referenced by pvPortMalloc(), and vPortFree().

void* pvPortMalloc

(

size_t

xWantedSize

)

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

void vPortFree

(

void *

pv

)

References configASSERT, heapSTRUCT_SIZE, NULL, prvInsertBlockIntoFreeList(), A_BLOCK_LINK::pxNextFreeBlock, vTaskSuspendAll(), A_BLOCK_LINK::xBlockSize, and xTaskResumeAll().

void vPortInitialiseBlocks

(

void

)

size_t xPortGetFreeHeapSize

(

void

)

References xFreeBytesRemaining.

const unsigned short heapSTRUCT_SIZE = ( ( sizeof ( xBlockLink ) + ( portBYTE_ALIGNMENT - 1 ) ) & ~portBYTE_ALIGNMENT_MASK )

static

Referenced by prvHeapInit(), pvPortMalloc(), and vPortFree().

xBlockLink * pxEnd = NULL

static

Referenced by prvHeapInit(), and prvInsertBlockIntoFreeList().

unsigned char ucHeap[configTOTAL_HEAP_SIZE]

static

Referenced by prvHeapInit().

size_t xBlockAllocatedBit = 0

static

Referenced by pvPortMalloc().

size_t xFreeBytesRemaining = ( ( size_t ) heapADJUSTED_HEAP_SIZE ) & ( ( size_t ) ~portBYTE_ALIGNMENT_MASK )

static

Referenced by pvPortMalloc(), and xPortGetFreeHeapSize().

xBlockLink xStart

static

Referenced by pvPortMalloc().

const size_t xTotalHeapSize = ( ( size_t ) heapADJUSTED_HEAP_SIZE ) & ( ( size_t ) ~portBYTE_ALIGNMENT_MASK )

static

Referenced by prvHeapInit().