godot/thirdparty/icu4c/common/cmemory.cpp

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*
*   Copyright (C) 2002-2015, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
******************************************************************************
*
* File cmemory.c      ICU Heap allocation.
*                     All ICU heap allocation, both for C and C++ new of ICU
*                     class types, comes through these functions.
*
*                     If you have a need to replace ICU allocation, this is the
*                     place to do it.
*
*                     Note that uprv_malloc(0) returns a non-nullptr pointer,
*                     and that a subsequent free of that pointer value is a NOP.
*
******************************************************************************
*/
#include "unicode/uclean.h"
#include "cmemory.h"
#include "putilimp.h"
#include "uassert.h"
#include <stdlib.h>

/* uprv_malloc(0) returns a pointer to this read-only data. */
static const int32_t zeroMem[] = …;

/* Function Pointers for user-supplied heap functions  */
static const void     *pContext;
static UMemAllocFn    *pAlloc;
static UMemReallocFn  *pRealloc;
static UMemFreeFn     *pFree;

#if U_DEBUG && defined(UPRV_MALLOC_COUNT)
#include <stdio.h>
static int n=0;
static long b=0; 
#endif

U_CAPI void * U_EXPORT2
uprv_malloc(size_t s) { … }

U_CAPI void * U_EXPORT2
uprv_realloc(void * buffer, size_t size) { … }

U_CAPI void U_EXPORT2
uprv_free(void *buffer) { … }

U_CAPI void * U_EXPORT2
uprv_calloc(size_t num, size_t size) { … }

U_CAPI void U_EXPORT2
u_setMemoryFunctions(const void *context, UMemAllocFn *a, UMemReallocFn *r, UMemFreeFn *f,  UErrorCode *status)
{ … }


U_CFUNC UBool cmemory_cleanup() { … }