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Add event_groups.c and associated functions in other core files.

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Added xTimerPendCallbackFromISR() to provide a centralised deferred interrupt handling mechanism.
Add xPortGetLowestEverFreeHeapSize() to heap_4.c.
This commit is contained in:
Richard Barry 2013-11-21 21:46:08 +00:00
parent faed443e82
commit f54f21b8f6
11 changed files with 1511 additions and 80 deletions
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12
FreeRTOS/Source/portable/MemMang/heap_4.c
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@ -134,6 +134,7 @@ static xBlockLink xStart, *pxEnd = NULL;
/* Keeps track of the number of free bytes remaining, but says nothing about
fragmentation. */
static size_t xFreeBytesRemaining = ( ( size_t ) heapADJUSTED_HEAP_SIZE ) & ( ( size_t ) ~portBYTE_ALIGNMENT_MASK );
static size_t xMinimumEverFreeBytesRemaining = ( ( size_t ) heapADJUSTED_HEAP_SIZE ) & ( ( size_t ) ~portBYTE_ALIGNMENT_MASK );
/* Gets set to the top bit of an size_t type. When this bit in the xBlockSize
member of an xBlockLink structure is set then the block belongs to the
@ -223,6 +224,11 @@ void *pvReturn = NULL;
xFreeBytesRemaining -= pxBlock->xBlockSize;
if( xFreeBytesRemaining < xMinimumEverFreeBytesRemaining )
{
xMinimumEverFreeBytesRemaining = xFreeBytesRemaining;
}
/* The block is being returned - it is allocated and owned
by the application and has no "next" block. */
pxBlock->xBlockSize |= xBlockAllocatedBit;
@ -295,6 +301,12 @@ size_t xPortGetFreeHeapSize( void )
}
/*-----------------------------------------------------------*/
size_t xPortGetMinimumEverFreeHeapSize( void )
{
return xMinimumEverFreeBytesRemaining;
}
/*-----------------------------------------------------------*/
void vPortInitialiseBlocks( void )
{
/* This just exists to keep the linker quiet. */