_get_heap_handle
Returns the handle of the heap that's used by the C run-time system.
Important
This API cannot be used in applications that execute in the Windows Runtime except in Debug builds. For more information, see CRT functions not supported with /ZW.
intptr_t _get_heap_handle( void );
Return Value
Returns the handle to the Win32 heap used by the C run-time system.
Remarks
Use this function if you want to call HeapSetInformation and enable the Low Fragmentation Heap on the CRT heap.
Requirements
Routine |
Required header |
|---|---|
_get_heap_handle |
<malloc.h> |
For more compatibility information, see Compatibility.
Sample
// crt_get_heap_handle.cpp
// compile with: /MT
#include <windows.h>
#include <malloc.h>
#include <stdio.h>
int main(void)
{
intptr_t hCrtHeap = _get_heap_handle();
ULONG ulEnableLFH = 2;
if (HeapSetInformation((PVOID)hCrtHeap,
HeapCompatibilityInformation,
&ulEnableLFH, sizeof(ulEnableLFH)))
puts("Enabling Low Fragmentation Heap succeeded");
else
puts("Enabling Low Fragmentation Heap failed");
return 0;
}