| /* |
| * Copyright (C) 2011 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 "DFGCodeBlocks.h" |
| |
| #include "CodeBlock.h" |
| #include "SlotVisitor.h" |
| #include <wtf/Vector.h> |
| |
| namespace JSC { |
| |
| #if ENABLE(DFG_JIT) |
| |
| DFGCodeBlocks::DFGCodeBlocks() { } |
| |
| DFGCodeBlocks::~DFGCodeBlocks() |
| { |
| Vector<CodeBlock*, 16> toRemove; |
| |
| for (HashSet<CodeBlock*>::iterator iter = m_set.begin(); iter != m_set.end(); ++iter) { |
| if ((*iter)->m_dfgData->isJettisoned) |
| toRemove.append(*iter); |
| } |
| |
| WTF::deleteAllValues(toRemove); |
| } |
| |
| void DFGCodeBlocks::jettison(PassOwnPtr<CodeBlock> codeBlockPtr) |
| { |
| // We don't want to delete it now; we just want its pointer. |
| CodeBlock* codeBlock = codeBlockPtr.leakPtr(); |
| |
| ASSERT(codeBlock); |
| ASSERT(codeBlock->getJITType() == JITCode::DFGJIT); |
| |
| // It should not have already been jettisoned. |
| ASSERT(!codeBlock->m_dfgData->isJettisoned); |
| |
| // We should have this block already. |
| ASSERT(m_set.find(codeBlock) != m_set.end()); |
| |
| codeBlock->m_dfgData->isJettisoned = true; |
| } |
| |
| void DFGCodeBlocks::clearMarks() |
| { |
| for (HashSet<CodeBlock*>::iterator iter = m_set.begin(); iter != m_set.end(); ++iter) { |
| (*iter)->m_dfgData->mayBeExecuting = false; |
| (*iter)->m_dfgData->visitAggregateHasBeenCalled = false; |
| } |
| } |
| |
| void DFGCodeBlocks::deleteUnmarkedJettisonedCodeBlocks() |
| { |
| Vector<CodeBlock*, 16> toRemove; |
| |
| for (HashSet<CodeBlock*>::iterator iter = m_set.begin(); iter != m_set.end(); ++iter) { |
| if ((*iter)->m_dfgData->isJettisoned && !(*iter)->m_dfgData->mayBeExecuting) |
| toRemove.append(*iter); |
| } |
| |
| WTF::deleteAllValues(toRemove); |
| } |
| |
| void DFGCodeBlocks::traceMarkedCodeBlocks(SlotVisitor& visitor) |
| { |
| for (HashSet<CodeBlock*>::iterator iter = m_set.begin(); iter != m_set.end(); ++iter) { |
| if ((*iter)->m_dfgData->mayBeExecuting) |
| (*iter)->visitAggregate(visitor); |
| } |
| } |
| |
| #else // ENABLE(DFG_JIT) |
| |
| void DFGCodeBlocks::jettison(PassOwnPtr<CodeBlock>) |
| { |
| } |
| |
| #endif // ENABLE(DFG_JIT) |
| |
| } // namespace JSC |
| |
| |