Synopsis

typedef struct {
  long successMallocCalls;
  long failedMallocCalls;
  long freeCalls;
  long trimCalls;
  long noopTrimCalls;
  long allocCount;
  long blockCount;
  long largestFreeBlockSize;
  long allocCountHighWater;
  long blockCountHighWater;
  long largestFreeBlockSizeLowWater;
  long allFreeMallocHitCount;
  long heap_size;
} CTL_HEAP_STATISTICS_t;

Description

CTL_HEAP_STATISTICS_t contains statistics maintained by the heap.

Structure

successMallocCalls

Number of calls to ctl_heap_alloc that were satisfied with a memory block.

failedMallocCalls

Number of calls to ctl_heap_alloc where allocation failed to return a memory block.

freeCalls

Number of calls to ctl_heap_free returning a non-zero memory block.

trimCalls

Number of calls to ctl_heap_trim.

trimCalls

Number of calls to ctl_heap_trim where there was nothing to do.

allocCount

Number of allocated memory blocks in the heap.

blockCount

Total number of memory blocks in the heap.

largestFreeBlockSize

The number of bytes in the largest free block.

allocCountHighWater

The highest recorded number of allocated memory blocks.

allocCountHighWater

The highest recorded number of total memory blocks.

largestFreeBlockSizeLowWater

The smallest recorded free block size.

allFreeMallocHitCount

The number of times ctl_heap_alloc entered with all blocks free.

heap_size

The size of the heap, in bytes.