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/*
* 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)
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