| /* |
| * 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 |
| |