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/*
* Copyright (C) 2017-2021 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "IsoAlignedMemoryAllocator.h"
#include "MarkedBlock.h"
#if ENABLE(MALLOC_HEAP_BREAKDOWN)
#include <wtf/text/MakeString.h>
#endif
namespace JSC {
IsoAlignedMemoryAllocator::IsoAlignedMemoryAllocator(CString name)
: Base(name)
#if ENABLE(MALLOC_HEAP_BREAKDOWN)
, m_heap(makeString("IsoAlignedAllocator "_s, name.span()).utf8().data())
#endif
{
}
IsoAlignedMemoryAllocator::~IsoAlignedMemoryAllocator()
{
releaseMemoryFromSubclassDestructor();
}
void IsoAlignedMemoryAllocator::dump(PrintStream& out) const
{
out.print("Iso(", RawPointer(this), ")");
}
void* IsoAlignedMemoryAllocator::tryAllocateMemory(size_t size)
{
#if ENABLE(MALLOC_HEAP_BREAKDOWN)
return m_heap.malloc(size);
#else
return FastCompactMalloc::tryMalloc(size);
#endif
}
void IsoAlignedMemoryAllocator::freeMemory(void* pointer)
{
#if ENABLE(MALLOC_HEAP_BREAKDOWN)
return m_heap.free(pointer);
#else
FastMalloc::free(pointer);
#endif
}
void* IsoAlignedMemoryAllocator::tryReallocateMemory(void*, size_t)
{
// In IsoSubspace-managed PreciseAllocation, we must not perform realloc.
RELEASE_ASSERT_NOT_REACHED();
}
void* IsoAlignedMemoryAllocator::tryMallocBlock()
{
#if ENABLE(MALLOC_HEAP_BREAKDOWN)
return m_heap.memalign(MarkedBlock::blockSize, MarkedBlock::blockSize, true);
#else
return tryFastCompactAlignedMalloc(MarkedBlock::blockSize, MarkedBlock::blockSize);
#endif
}
void IsoAlignedMemoryAllocator::freeBlock(void* block)
{
#if ENABLE(MALLOC_HEAP_BREAKDOWN)
m_heap.free(block);
#else
fastAlignedFree(block);
#endif
}
void IsoAlignedMemoryAllocator::commitBlock(void* block)
{
WTF::fastCommitAlignedMemory(block, MarkedBlock::blockSize);
}
void IsoAlignedMemoryAllocator::decommitBlock(void* block)
{
WTF::fastDecommitAlignedMemory(block, MarkedBlock::blockSize);
}
} // namespace JSC
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