heap_4.c File Reference

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

Include dependency graph for heap_4.c:

Go to the source code of this file.

Classes
struct	A_BLOCK_LINK

Macros
#define	MPU_WRAPPERS_INCLUDED_FROM_API_FILE
#define	configHEAP_CLEAR_MEMORY_ON_FREE   0
#define	heapMINIMUM_BLOCK_SIZE   ( ( size_t ) ( xHeapStructSize << 1 ) )
#define	heapBITS_PER_BYTE   ( ( size_t ) 8 )
#define	heapSIZE_MAX   ( ~( ( size_t ) 0 ) )
#define	heapMULTIPLY_WILL_OVERFLOW(a, b)
#define	heapADD_WILL_OVERFLOW(a, b)
#define	heapBLOCK_ALLOCATED_BITMASK   ( ( ( size_t ) 1 ) << ( ( sizeof( size_t ) * heapBITS_PER_BYTE ) - 1 ) )
#define	heapBLOCK_SIZE_IS_VALID(xBlockSize)
#define	heapBLOCK_IS_ALLOCATED(pxBlock)
#define	heapALLOCATE_BLOCK(pxBlock)
#define	heapFREE_BLOCK(pxBlock)

Typedefs
typedef struct A_BLOCK_LINK	BlockLink_t

Functions
static void	prvInsertBlockIntoFreeList (BlockLink_t *pxBlockToInsert) PRIVILEGED_FUNCTION
static void	prvHeapInit (void)
void	vPortFree (void *pv)
size_t	xPortGetFreeHeapSize (void)
size_t	xPortGetMinimumEverFreeHeapSize (void)
void	vPortInitialiseBlocks (void)
void *	pvPortCalloc (size_t xNum, size_t xSize)
void	vPortGetHeapStats (HeapStats_t *pxHeapStats)

Variables
static PRIVILEGED_DATA uint8_t	ucHeap [configTOTAL_HEAP_SIZE]

Macro Definition Documentation

configHEAP_CLEAR_MEMORY_ON_FREE

#define configHEAP_CLEAR_MEMORY_ON_FREE   0

Definition at line 55 of file heap_4.c.

heapADD_WILL_OVERFLOW

#define heapADD_WILL_OVERFLOW	(		a,
			b )

Value:

( ( a ) > ( heapSIZE_MAX - ( b ) ) )

Definition at line 71 of file heap_4.c.

Referenced by prvHeapInit().

heapALLOCATE_BLOCK

#define heapALLOCATE_BLOCK

(

pxBlock

)

Value:

( ( pxBlock->xBlockSize ) |= heapBLOCK_ALLOCATED_BITMASK )

Definition at line 80 of file heap_4.c.

Referenced by prvHeapInit().

heapBITS_PER_BYTE

#define heapBITS_PER_BYTE   ( ( size_t ) 8 )

Definition at line 62 of file heap_4.c.

heapBLOCK_ALLOCATED_BITMASK

#define heapBLOCK_ALLOCATED_BITMASK   ( ( ( size_t ) 1 ) << ( ( sizeof( size_t ) * heapBITS_PER_BYTE ) - 1 ) )

Definition at line 77 of file heap_4.c.

heapBLOCK_IS_ALLOCATED

#define heapBLOCK_IS_ALLOCATED

(

pxBlock

)

Value:

( ( ( pxBlock->xBlockSize ) & heapBLOCK_ALLOCATED_BITMASK ) != 0 )

Definition at line 79 of file heap_4.c.

Referenced by vPortFree().

heapBLOCK_SIZE_IS_VALID

#define heapBLOCK_SIZE_IS_VALID

(

xBlockSize

)

Value:

( ( ( xBlockSize ) & heapBLOCK_ALLOCATED_BITMASK ) == 0 )

Definition at line 78 of file heap_4.c.

Referenced by prvHeapInit().

heapFREE_BLOCK

#define heapFREE_BLOCK

(

pxBlock

)

Value:

( ( pxBlock->xBlockSize ) &= ~heapBLOCK_ALLOCATED_BITMASK )

Definition at line 81 of file heap_4.c.

Referenced by vPortFree().

heapMINIMUM_BLOCK_SIZE

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

Definition at line 59 of file heap_4.c.

Referenced by prvHeapInit().

heapMULTIPLY_WILL_OVERFLOW

#define heapMULTIPLY_WILL_OVERFLOW	(		a,
			b )

Value:

( ( ( a ) > 0 ) && ( ( b ) > ( heapSIZE_MAX / ( a ) ) ) )

Definition at line 68 of file heap_4.c.

Referenced by pvPortCalloc().

heapSIZE_MAX

#define heapSIZE_MAX   ( ~( ( size_t ) 0 ) )

Definition at line 65 of file heap_4.c.

MPU_WRAPPERS_INCLUDED_FROM_API_FILE

#define MPU_WRAPPERS_INCLUDED_FROM_API_FILE

Definition at line 43 of file heap_4.c.

Typedef Documentation

BlockLink_t

typedef struct A_BLOCK_LINK BlockLink_t

Function Documentation

prvHeapInit()

void prvHeapInit ( void )

static

Definition at line 117 of file heap_4.c.

References configASSERT, heapADD_WILL_OVERFLOW, heapALLOCATE_BLOCK, heapBLOCK_SIZE_IS_VALID, heapMINIMUM_BLOCK_SIZE, mtCOVERAGE_TEST_MARKER, NULL, portBYTE_ALIGNMENT, PRIVILEGED_DATA, PRIVILEGED_FUNCTION, prvHeapInit(), prvInsertBlockIntoFreeList(), A_BLOCK_LINK::pxNextFreeBlock, traceMALLOC, vApplicationMallocFailedHook(), vTaskSuspendAll(), A_BLOCK_LINK::xBlockSize, and xTaskResumeAll().

Referenced by prvHeapInit().

prvInsertBlockIntoFreeList()

void prvInsertBlockIntoFreeList ( BlockLink_t * pxBlockToInsert )

static

Definition at line 442 of file heap_4.c.

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

Referenced by prvHeapInit(), and vPortFree().

pvPortCalloc()

void * pvPortCalloc	(	size_t	xNum,
		size_t	xSize )

Definition at line 378 of file heap_4.c.

References heapMULTIPLY_WILL_OVERFLOW, NULL, and pvPortMalloc().

vPortFree()

void vPortFree

(

void *

pv

)

Definition at line 307 of file heap_4.c.

References configASSERT, heapBLOCK_IS_ALLOCATED, heapFREE_BLOCK, mtCOVERAGE_TEST_MARKER, NULL, prvInsertBlockIntoFreeList(), A_BLOCK_LINK::pxNextFreeBlock, traceFREE, vTaskSuspendAll(), A_BLOCK_LINK::xBlockSize, and xTaskResumeAll().

Referenced by osThreadEnumerate(), vEventGroupDelete(), vQueueDelete(), and vStreamBufferDelete().

vPortGetHeapStats()

void vPortGetHeapStats

(

HeapStats_t *

pxHeapStats

)

Definition at line 505 of file heap_4.c.

References NULL, portMAX_DELAY, A_BLOCK_LINK::pxNextFreeBlock, taskENTER_CRITICAL, taskEXIT_CRITICAL, vTaskSuspendAll(), xHeapStats::xAvailableHeapSpaceInBytes, A_BLOCK_LINK::xBlockSize, xHeapStats::xMinimumEverFreeBytesRemaining, xHeapStats::xNumberOfFreeBlocks, xHeapStats::xNumberOfSuccessfulAllocations, xHeapStats::xNumberOfSuccessfulFrees, xHeapStats::xSizeOfLargestFreeBlockInBytes, xHeapStats::xSizeOfSmallestFreeBlockInBytes, and xTaskResumeAll().

vPortInitialiseBlocks()

void vPortInitialiseBlocks

(

void

)

Definition at line 372 of file heap_4.c.

xPortGetFreeHeapSize()

size_t xPortGetFreeHeapSize

(

void

)

Definition at line 360 of file heap_4.c.

xPortGetMinimumEverFreeHeapSize()

size_t xPortGetMinimumEverFreeHeapSize

(

void

)

Definition at line 366 of file heap_4.c.

Variable Documentation

ucHeap

PRIVILEGED_DATA uint8_t ucHeap[configTOTAL_HEAP_SIZE]

static

Definition at line 92 of file heap_4.c.