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malloc.cpp
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135 lines (107 loc) · 1.94 KB
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//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
/*++
Module Name:
malloc.cpp
Abstract:
Implementation of suspension safe memory allocation functions.
Revision History:
--*/
#include "pal/corunix.hpp"
#include "pal/thread.hpp"
#include "pal/malloc.hpp"
#include "pal/dbgmsg.h"
#include <string.h>
SET_DEFAULT_DEBUG_CHANNEL(CRT);
using namespace CorUnix;
void *
__cdecl
PAL_realloc(
void* pvMemblock,
size_t szSize
)
{
return InternalRealloc(pvMemblock, szSize);
}
void *
CorUnix::InternalRealloc(
void* pvMemblock,
size_t szSize
)
{
void *pvMem;
PERF_ENTRY(InternalRealloc);
ENTRY("realloc (memblock:%p size=%d)\n", pvMemblock, szSize);
if (szSize == 0)
{
// If pvMemblock is NULL, there's no reason to call free.
if (pvMemblock != NULL)
{
InternalFree(pvMemblock);
}
pvMem = NULL;
}
else
{
pvMem = realloc(pvMemblock, szSize);
}
LOGEXIT("realloc returns void * %p\n", pvMem);
PERF_EXIT(InternalRealloc);
return pvMem;
}
void
__cdecl
PAL_free(
void *pvMem
)
{
InternalFree(pvMem);
}
void
CorUnix::InternalFree(
void *pvMem
)
{
free(pvMem);
}
void *
__cdecl
PAL_malloc(
size_t szSize
)
{
return InternalMalloc(szSize);
}
void *
CorUnix::InternalMalloc(
size_t szSize
)
{
void *pvMem;
if (szSize == 0)
{
// malloc may return null for a requested size of zero bytes. Force a nonzero size to get a valid pointer.
szSize = 1;
}
pvMem = (void*)malloc(szSize);
return pvMem;
}
char *
__cdecl
PAL__strdup(
const char *c_szStr
)
{
return InternalStrdup(c_szStr);
}
char *
CorUnix::InternalStrdup(
const char *c_szStr
)
{
char *pszStrCopy;
pszStrCopy = strdup(c_szStr);
return pszStrCopy;
}