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/*
* Copyright (C) 2018-2022 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 {
IsoSubspacePerVM::IsoSubspacePerVM(Function<SubspaceParameters(Heap&)> subspaceParameters)
: m_subspaceParameters(WTFMove(subspaceParameters))
{
}
IsoSubspacePerVM::~IsoSubspacePerVM()
{
UNREACHABLE_FOR_PLATFORM();
}
IsoSubspace& IsoSubspacePerVM::isoSubspaceforHeap(LockHolder&, Heap& heap)
{
auto result = m_subspacePerHeap.add(&heap, nullptr);
if (result.isNewEntry) {
SubspaceParameters params = m_subspaceParameters(heap);
result.iterator->value = new IsoSubspace(params.name, heap, *params.heapCellType, params.size, 0);
Locker locker { heap.lock() };
heap.perVMIsoSubspaces.append(this);
}
return *result.iterator->value;
}
GCClient::IsoSubspace& IsoSubspacePerVM::clientIsoSubspaceforVM(VM& vm)
{
Locker locker { m_lock };
auto result = m_clientSubspacePerVM.add(&vm, nullptr);
if (!result.isNewEntry && result.iterator->value)
return *result.iterator->value;
IsoSubspace& subspace = isoSubspaceforHeap(locker, vm.heap);
result.iterator->value = new GCClient::IsoSubspace(subspace);
vm.clientHeap.perVMIsoSubspaces.append(this);
return *result.iterator->value;
}
void IsoSubspacePerVM::releaseIsoSubspace(Heap& heap)
{
IsoSubspace* subspace;
{
Locker locker { m_lock };
subspace = m_subspacePerHeap.take(&heap);
}
delete subspace;
}
void IsoSubspacePerVM::releaseClientIsoSubspace(VM& vm)
{
GCClient::IsoSubspace* clientSubspace;
{
Locker locker { m_lock };
clientSubspace = m_clientSubspacePerVM.take(&vm);
}
delete clientSubspace;
}
} // namespace JSC
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