mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 04:09:40 +00:00
75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2018-2019 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 "IsoSubspacePerVM.h"
|
|
|
|
#include "HeapInlines.h"
|
|
#include "MarkedSpaceInlines.h"
|
|
|
|
namespace JSC {
|
|
|
|
class IsoSubspacePerVM::AutoremovingIsoSubspace final : public IsoSubspace {
|
|
public:
|
|
AutoremovingIsoSubspace(IsoSubspacePerVM& perVM, CString name, Heap& heap, HeapCellType* heapCellType, size_t size)
|
|
: IsoSubspace(name, heap, heapCellType, size, /* numberOfLowerTierCells */ 0)
|
|
, m_perVM(perVM)
|
|
{
|
|
}
|
|
|
|
~AutoremovingIsoSubspace() final
|
|
{
|
|
auto locker = holdLock(m_perVM.m_lock);
|
|
m_perVM.m_subspacePerVM.remove(&space().heap().vm());
|
|
}
|
|
|
|
private:
|
|
IsoSubspacePerVM& m_perVM;
|
|
};
|
|
|
|
IsoSubspacePerVM::IsoSubspacePerVM(Function<SubspaceParameters(VM&)> subspaceParameters)
|
|
: m_subspaceParameters(WTFMove(subspaceParameters))
|
|
{
|
|
}
|
|
|
|
IsoSubspacePerVM::~IsoSubspacePerVM()
|
|
{
|
|
UNREACHABLE_FOR_PLATFORM();
|
|
}
|
|
|
|
IsoSubspace& IsoSubspacePerVM::forVM(VM& vm)
|
|
{
|
|
auto locker = holdLock(m_lock);
|
|
auto result = m_subspacePerVM.add(&vm, nullptr);
|
|
if (result.isNewEntry) {
|
|
SubspaceParameters params = m_subspaceParameters(vm);
|
|
result.iterator->value = new AutoremovingIsoSubspace(*this, params.name, vm.heap, params.heapCellType, params.size);
|
|
}
|
|
return *result.iterator->value;
|
|
}
|
|
|
|
} // namespace JSC
|
|
|