mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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61 lines
2.5 KiB
C++
61 lines
2.5 KiB
C++
/*
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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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#include "config.h"
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#include "GCRequest.h"
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namespace JSC {
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bool GCRequest::subsumedBy(const GCRequest& other) const
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{
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// If we have callbacks, then there is no chance that we're subsumed by an existing request.
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if (didFinishEndPhase)
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return false;
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if (other.scope == CollectionScope::Full)
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return true;
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if (scope) {
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// If we're eden, then we're subsumed by the other scope because the other scope is either eden
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// or disengaged (so either eden or full). If we're full, then we're not subsumed, for the same
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// reason.
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return scope == CollectionScope::Eden;
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}
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// At this point we know that other.scope is either not engaged or Eden, and this.scope is not
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// engaged. So, we're expecting to do either an eden or full collection, and the other scope is
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// either the same or is requesting specifically a full collection. We are subsumed if the other
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// scope is disengaged (so same as us).
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return !other.scope;
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}
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void GCRequest::dump(PrintStream& out) const
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{
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out.print("{scope = ", scope, ", didFinishEndPhase = ", didFinishEndPhase ? "engaged" : "null", "}");
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}
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} // namespace JSC
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