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Fix the defect that Heap_1.c may waste first portBYTE_ALIGNMENT bytes of ucHeap[] (#238)

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* Fix the defect that Heap_1.c may waste first 8 bytes of ucHeap[]

* Fix the same byte waste issue in heap_2
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Qikai 2021-10-05 02:15:00 +08:00 committed by GitHub
parent 5f290e4559
commit 1fb4e847ed
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2 changed files with 2 additions and 2 deletions
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2
portable/MemMang/heap_1.c
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@ -96,7 +96,7 @@ void * pvPortMalloc( size_t xWantedSize )
if( pucAlignedHeap == NULL )
{
/* Ensure the heap starts on a correctly aligned boundary. */
pucAlignedHeap = ( uint8_t * ) ( ( ( portPOINTER_SIZE_TYPE ) & ucHeap[ portBYTE_ALIGNMENT ] ) & ( ~( ( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK ) ) );
pucAlignedHeap = ( uint8_t * ) ( ( ( portPOINTER_SIZE_TYPE ) & ucHeap[ portBYTE_ALIGNMENT - 1 ] ) & ( ~( ( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK ) ) );
}
/* Check there is enough room left for the allocation and. */

2
portable/MemMang/heap_2.c
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@ -266,7 +266,7 @@ static void prvHeapInit( void )
uint8_t * pucAlignedHeap;
/* Ensure the heap starts on a correctly aligned boundary. */
pucAlignedHeap = ( uint8_t * ) ( ( ( portPOINTER_SIZE_TYPE ) & ucHeap[ portBYTE_ALIGNMENT ] ) & ( ~( ( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK ) ) );
pucAlignedHeap = ( uint8_t * ) ( ( ( portPOINTER_SIZE_TYPE ) & ucHeap[ portBYTE_ALIGNMENT - 1 ] ) & ( ~( ( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK ) ) );
/* xStart is used to hold a pointer to the first item in the list of free
* blocks. The void cast is used to prevent compiler warnings. */