/* * Copyright (C) 2016 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. */ #pragma once #if ENABLE(JIT) #include <wtf/AutomaticThread.h> #include <wtf/FastMalloc.h> #include <wtf/HashSet.h> #include <wtf/Lock.h> #include <wtf/Noncopyable.h> #include <wtf/RefPtr.h> #include <wtf/Vector.h> namespace JSC { class CodeBlock; class VM; class JITWorklist { WTF_MAKE_NONCOPYABLE(JITWorklist); WTF_MAKE_FAST_ALLOCATED; class Plan; typedef Vector<RefPtr<Plan>, 32> Plans; public: ~JITWorklist(); bool completeAllForVM(VM&); // Return true if any JIT work happened. void poll(VM&); void compileLater(CodeBlock*, unsigned loopOSREntryBytecodeOffset = 0); void compileNow(CodeBlock*, unsigned loopOSREntryBytecodeOffset = 0); static JITWorklist* instance(); private: JITWorklist(); class Thread; friend class Thread; void finalizePlans(Plans&); Plans m_queue; Plans m_plans; HashSet<CodeBlock*> m_planned; Box<Lock> m_lock; RefPtr<AutomaticThreadCondition> m_condition; // We use One True Condition for everything because that's easier. RefPtr<AutomaticThread> m_thread; unsigned m_numAvailableThreads { 0 }; }; } // namespace JSC #endif // ENABLE(JIT)