mirror of
https://github.com/reactos/reactos.git
synced 2025-05-29 05:58:13 +00:00
04e0dc4a7a
Imported from https://www.nuget.org/packages/Microsoft.Windows.SDK.CRTSource/10.0.22621.3 License: MIT
32 lines
1.2 KiB
C++
32 lines
1.2 KiB
C++
//
|
|
// free.cpp
|
|
//
|
|
// Copyright (c) Microsoft Corporation. All rights reserved.
|
|
//
|
|
// Implementation of free().
|
|
//
|
|
#include <corecrt_internal.h>
|
|
#include <malloc.h>
|
|
|
|
// Frees a block in the heap. The 'block' pointer must either be a null pointer
|
|
// or must point to a valid block in the heap.
|
|
//
|
|
// This function supports patching and therefore must be marked noinline.
|
|
// Both _free_dbg and _free_base must also be marked noinline
|
|
// to prevent identical COMDAT folding from substituting calls to free
|
|
// with either other function or vice versa.
|
|
extern "C" _CRT_HYBRIDPATCHABLE __declspec(noinline) void __cdecl free(void* const block)
|
|
{
|
|
// Some libraries that hook memory allocation routines (such as libtcmalloc)
|
|
// look for an appropriate place inside free to place a patch to its version
|
|
// of free. Without these extra instructions padding the call to _free_base,
|
|
// some libraries may choose to insert this patch in _free_base instead.
|
|
volatile int extra_instructions_for_patching_libraries = 0;
|
|
(void) extra_instructions_for_patching_libraries;
|
|
|
|
#ifdef _DEBUG
|
|
_free_dbg(block, _NORMAL_BLOCK);
|
|
#else
|
|
_free_base(block);
|
|
#endif
|
|
}
|