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Add xPortGetFreeHeapSize() function.

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This commit is contained in:
Richard Barry 2009-10-05 11:16:38 +00:00
parent 9468e36040
commit e90ba3e57f
5 changed files with 47 additions and 0 deletions
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2
Source/include/mpu_wrappers.h
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@ -99,6 +99,8 @@ only for ports that are using the MPU. */
#define pvPortMalloc MPU_pvPortMalloc
#define vPortFree MPU_vPortFree
#define xPortGetFreeHeapSize MPU_xPortGetFreeHeapSize
#define vPortInitialiseBlocks MPU_vPortInitialiseBlocks
/* Remove the privileged function macro. */
#define PRIVILEGED_FUNCTION

1
Source/include/portable.h
View file

@ -350,6 +350,7 @@ extern "C" {
void *pvPortMalloc( size_t xSize ) PRIVILEGED_FUNCTION;
void vPortFree( void *pv ) PRIVILEGED_FUNCTION;
void vPortInitialiseBlocks( void ) PRIVILEGED_FUNCTION;
size_t xPortGetFreeHeapSize( void ) PRIVILEGED_FUNCTION;
/*
* Setup the hardware ready for the scheduler to take control. This generally

24
Source/portable/GCC/ARM_CM3_MPU/port.c
View file

@ -1025,3 +1025,27 @@ portBASE_TYPE xRunningPrivileged = prvRaisePrivilege();
portRESET_PRIVILEGE( xRunningPrivileged );
}
/*-----------------------------------------------------------*/
void MPU_vPortInitialiseBlocks( void )
{
portBASE_TYPE xRunningPrivileged = prvRaisePrivilege();
vPortInitialiseBlocks();
portRESET_PRIVILEGE( xRunningPrivileged );
}
/*-----------------------------------------------------------*/
size_t MPU_xPortGetFreeHeapSize( void )
{
size_t xReturn;
portBASE_TYPE xRunningPrivileged = prvRaisePrivilege();
xReturn = xPortGetFreeHeapSize();
portRESET_PRIVILEGE( xRunningPrivileged );
return xReturn;
}

7
Source/portable/MemMang/heap_1.c
View file

@ -136,5 +136,12 @@ void vPortInitialiseBlocks( void )
/* Only required when static memory is not cleared. */
xNextFreeByte = ( size_t ) 0;
}
/*-----------------------------------------------------------*/
size_t xPortGetFreeHeapSize( void )
{
return ( configTOTAL_HEAP_SIZE - xNextFreeByte );
}

13
Source/portable/MemMang/heap_2.c
View file

@ -93,6 +93,10 @@ static const unsigned short heapSTRUCT_SIZE = ( sizeof( xBlockLink ) + portBYTE
/* Create a couple of list links to mark the start and end of the list. */
static xBlockLink xStart, xEnd;
/* Keeps track of the number of free bytes remaining, but says nothing about
fragmentation. */
static size_t xFreeBytesRemaining = configTOTAL_HEAP_SIZE;
/* STATIC FUNCTIONS ARE DEFINED AS MACROS TO MINIMIZE THE FUNCTION CALL DEPTH. */
/*
@ -211,6 +215,8 @@ void *pvReturn = NULL;
/* Insert the new block into the list of free blocks. */
prvInsertBlockIntoFreeList( ( pxNewBlockLink ) );
}
xFreeBytesRemaining -= xWantedSize;
}
}
}
@ -248,9 +254,16 @@ xBlockLink *pxLink;
{
/* Add this block to the list of free blocks. */
prvInsertBlockIntoFreeList( ( ( xBlockLink * ) pxLink ) );
xFreeBytesRemaining += pxLink->xBlockSize;
}
xTaskResumeAll();
}
}
/*-----------------------------------------------------------*/
size_t xPortGetFreeHeapSize( void )
{
return xFreeBytesRemaining;
}
/*-----------------------------------------------------------*/