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https://github.com/darlinghq/darling-JavaScriptCore.git
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77 lines
2.7 KiB
C
77 lines
2.7 KiB
C
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/*
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* Copyright (C) 2017 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <wtf/FastMalloc.h>
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#include <wtf/MonotonicTime.h>
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#include <wtf/Noncopyable.h>
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namespace JSC {
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class MutatorScheduler {
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WTF_MAKE_NONCOPYABLE(MutatorScheduler);
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WTF_MAKE_FAST_ALLOCATED;
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public:
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enum State {
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Normal, // Not collecting.
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Stopped,
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Resumed
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};
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MutatorScheduler();
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virtual ~MutatorScheduler();
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virtual State state() const = 0;
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virtual void beginCollection() = 0;
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virtual void didStop();
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virtual void willResume();
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// At the top of an iteration, the GC will may call didReachTermination.
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virtual void didReachTermination();
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// If it called didReachTermination, it will then later call didExecuteConstraints.
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virtual void didExecuteConstraints();
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// After doing that, it will do synchronous draining. When this stalls - either due to timeout or
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// just 'cause, it will call this.
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virtual void synchronousDrainingDidStall();
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virtual MonotonicTime timeToStop() = 0; // Call while resumed, to ask when to stop.
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virtual MonotonicTime timeToResume() = 0; // Call while stopped, to ask when to resume.
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virtual void log();
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bool shouldStop(); // Call while resumed, to ask if we should stop now.
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bool shouldResume(); // Call while stopped, to ask if we should resume now.
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virtual void endCollection() = 0;
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};
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} // namespace JSC
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