41  * pvPortMalloc() will be called if any task objects (tasks, queues, event
84 #if ( configSUPPORT_DYNAMIC_ALLOCATION == 0 )
85     #error This file must not be used if configSUPPORT_DYNAMIC_ALLOCATION is 0
101 /* Check if multiplying a and b will result in overflow. */
104 /* Check if adding a and b will result in overflow. */
107 /* Check if the subtraction operation ( a - b ) will result in underflow. */
124 #if ( configENABLE_HEAP_PROTECTOR == 1 )
139 #else /* if ( configENABLE_HEAP_PROTECTOR == 1 ) */
162  * the block in front it and/or the block behind it if the memory blocks are
168 #if ( configENABLE_HEAP_PROTECTOR == 1 )
195 #if ( configENABLE_HEAP_PROTECTOR == 1 )
220     if( xWantedSize > 0 )  in pvPortMalloc()
224         if( heapADD_WILL_OVERFLOW( xWantedSize, xHeapStructSize ) == 0 )  in pvPortMalloc()
230             if( ( xWantedSize & portBYTE_ALIGNMENT_MASK ) != 0x00 )  in pvPortMalloc()
235                 if( heapADD_WILL_OVERFLOW( xWantedSize, xAdditionalRequiredSize ) == 0 )  in pvPortMalloc()
265         if( heapBLOCK_SIZE_IS_VALID( xWantedSize ) != 0 )  in pvPortMalloc()
267             if( ( xWantedSize > 0 ) && ( xWantedSize <= xFreeBytesRemaining ) )  in pvPortMalloc()
282                 /* If the end marker was reached then a block of adequate size  in pvPortMalloc()
284                 if( pxBlock != pxEnd )  in pvPortMalloc()
295                     /* If the block is larger than required it can be split into  in pvPortMalloc()
299                     if( ( pxBlock->xBlockSize - xWantedSize ) > heapMINIMUM_BLOCK_SIZE )  in pvPortMalloc()
324                     if( xFreeBytesRemaining < xMinimumEverFreeBytesRemaining )  in pvPortMalloc()
358     #if ( configUSE_MALLOC_FAILED_HOOK == 1 )  in pvPortMalloc()
360         if( pvReturn == NULL )  in pvPortMalloc()
369     #endif /* if ( configUSE_MALLOC_FAILED_HOOK == 1 ) */  in pvPortMalloc()
381     if( pv != NULL )  in vPortFree()
394         if( heapBLOCK_IS_ALLOCATED( pxLink ) != 0 )  in vPortFree()
396             if( pxLink->pxNextFreeBlock == NULL )  in vPortFree()
401                 #if ( configHEAP_CLEAR_MEMORY_ON_FREE == 1 )  in vPortFree()
403                     /* Check for underflow as this can occur if xBlockSize is  in vPortFree()
405                     if( heapSUBTRACT_WILL_UNDERFLOW( pxLink->xBlockSize, xHeapStructSize ) == 0 )  in vPortFree()
452     if( heapMULTIPLY_WILL_OVERFLOW( xNum, xSize ) == 0 )  in pvPortCalloc()
456         if( pv != NULL )  in pvPortCalloc()
478     if( pxIterator != &xStart )  in prvInsertBlockIntoFreeList()
487     if( ( puc + pxIterator->xBlockSize ) == ( uint8_t * ) pxBlockToInsert )  in prvInsertBlockIntoFreeList()
501 …if( ( puc + pxBlockToInsert->xBlockSize ) == ( uint8_t * ) heapPROTECT_BLOCK_POINTER( pxIterator->…  in prvInsertBlockIntoFreeList()
503         if( heapPROTECT_BLOCK_POINTER( pxIterator->pxNextFreeBlock ) != pxEnd )  in prvInsertBlockIntoFreeList()
519     /* If the block being inserted plugged a gap, so was merged with the block  in prvInsertBlockIntoFreeList()
523     if( pxIterator != pxBlockToInsert )  in prvInsertBlockIntoFreeList()
547     #if ( configENABLE_HEAP_PROTECTOR == 1 )  in vPortDefineHeapRegions()
562         if( ( xAddress & portBYTE_ALIGNMENT_MASK ) != 0 )  in vPortDefineHeapRegions()
573         /* Set xStart if it has not already been set. */  in vPortDefineHeapRegions()
574         if( xDefinedRegions == 0 )  in vPortDefineHeapRegions()
583             /* Should only get here if one region has already been added to the  in vPortDefineHeapRegions()
591         #if ( configENABLE_HEAP_PROTECTOR == 1 )  in vPortDefineHeapRegions()
593             if( ( pucHeapLowAddress == NULL ) ||  in vPortDefineHeapRegions()
601         /* Remember the location of the end marker in the previous region, if  in vPortDefineHeapRegions()
621         /* If this is not the first region that makes up the entire heap space  in vPortDefineHeapRegions()
623         if( pxPreviousFreeBlock != NULL )  in vPortDefineHeapRegions()
630         #if ( configENABLE_HEAP_PROTECTOR == 1 )  in vPortDefineHeapRegions()
632             if( ( pucHeapHighAddress == NULL ) ||  in vPortDefineHeapRegions()
662         /* pxBlock will be NULL if the heap has not been initialised.  The heap  in vPortGetHeapStats()
664         if( pxBlock != NULL )  in vPortGetHeapStats()
672                 if( pxBlock->xBlockSize > xMaxSize )  in vPortGetHeapStats()
680                 if( pxBlock->xBlockSize != 0 )  in vPortGetHeapStats()
682                     if( pxBlock->xBlockSize < xMinSize )  in vPortGetHeapStats()