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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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13
Source/portable/MemMang/heap_2.c
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@ -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;
}
/*-----------------------------------------------------------*/