| /* |
| * Copyright (C) 2017 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 "HeapCellType.h" |
| |
| #include "JSCInlines.h" |
| #include "MarkedBlockInlines.h" |
| |
| namespace JSC { |
| |
| // Writing it this way ensures that when you pass this as a functor, the callee is specialized for |
| // this callback. If you wrote this as a normal function then the callee would be specialized for |
| // the function's type and it would have indirect calls to that function. And unlike a lambda, it's |
| // possible to mark this ALWAYS_INLINE. |
| struct DefaultDestroyFunc { |
| ALWAYS_INLINE void operator()(VM& vm, JSCell* cell) const |
| { |
| ASSERT(cell->structureID()); |
| Structure* structure = cell->structure(vm); |
| ASSERT(structure->typeInfo().structureIsImmortal()); |
| const ClassInfo* classInfo = structure->classInfo(); |
| MethodTable::DestroyFunctionPtr destroy = classInfo->methodTable.destroy; |
| destroy(cell); |
| } |
| }; |
| |
| HeapCellType::HeapCellType(CellAttributes attributes) |
| : m_attributes(attributes) |
| { |
| } |
| |
| HeapCellType::~HeapCellType() |
| { |
| } |
| |
| void HeapCellType::finishSweep(MarkedBlock::Handle& block, FreeList* freeList) |
| { |
| block.finishSweepKnowingHeapCellType(freeList, DefaultDestroyFunc()); |
| } |
| |
| void HeapCellType::destroy(VM& vm, JSCell* cell) |
| { |
| DefaultDestroyFunc()(vm, cell); |
| } |
| |
| } // namespace JSC |
| |