// Copyright (c) 2005, 2007, Google Inc.
// All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "config.h"
#include "wtf/FastMalloc.h"
#include <string.h>
namespace WTF {
void* fastZeroedMalloc(size_t n)
{
void* result = fastMalloc(n);
memset(result, 0, n);
return result;
}
char* fastStrDup(const char* src)
{
size_t len = strlen(src) + 1;
char* dup = static_cast<char*>(fastMalloc(len));
memcpy(dup, src, len);
return dup;
}
// TODO: remove these two.
void releaseFastMallocFreeMemory() { }
FastMallocStatistics fastMallocStatistics()
{
FastMallocStatistics statistics = { 0, 0, 0 };
return statistics;
}
} // namespace WTF
#if USE(SYSTEM_MALLOC)
#include "wtf/Assertions.h"
#include <stdlib.h>
namespace WTF {
void fastMallocShutdown()
{
}
void* fastMalloc(size_t n)
{
void* result = malloc(n);
ASSERT(result); // We expect tcmalloc underneath, which would crash instead of getting here.
return result;
}
void fastFree(void* p)
{
free(p);
}
void* fastRealloc(void* p, size_t n)
{
void* result = realloc(p, n);
ASSERT(result); // We expect tcmalloc underneath, which would crash instead of getting here.
return result;
}
} // namespace WTF
#else // USE(SYSTEM_MALLOC)
#include "wtf/PartitionAlloc.h"
#include "wtf/SpinLock.h"
namespace WTF {
static PartitionAllocatorGeneric gPartition;
static int gLock = 0;
static bool gInitialized = false;
void fastMallocShutdown()
{
gPartition.shutdown();
}
void* fastMalloc(size_t n)
{
if (UNLIKELY(!gInitialized)) {
spinLockLock(&gLock);
if (!gInitialized) {
gInitialized = true;
gPartition.init();
}
spinLockUnlock(&gLock);
}
return partitionAllocGeneric(gPartition.root(), n);
}
void fastFree(void* p)
{
partitionFreeGeneric(gPartition.root(), p);
}
void* fastRealloc(void* p, size_t n)
{
return partitionReallocGeneric(gPartition.root(), p, n);
}
} // namespace WTF
#endif // USE(SYSTEM_MALLOC)