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