mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
/*
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* Copyright (C) 2015-2019 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 "EntryFrame.h"
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#include "ProfilerDatabase.h"
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#include "VM.h"
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#include "Watchdog.h"
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namespace JSC {
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bool VM::ensureStackCapacityFor(Register* newTopOfStack)
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{
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#if !ENABLE(C_LOOP)
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return newTopOfStack >= m_softStackLimit;
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#else
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return ensureStackCapacityForCLoop(newTopOfStack);
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#endif
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}
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bool VM::isSafeToRecurseSoft() const
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{
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bool safe = isSafeToRecurse(m_softStackLimit);
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#if ENABLE(C_LOOP)
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safe = safe && isSafeToRecurseSoftCLoop();
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#endif
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return safe;
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}
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template<typename Func>
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void VM::logEvent(CodeBlock* codeBlock, const char* summary, const Func& func)
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{
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if (LIKELY(!m_perBytecodeProfiler))
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return;
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m_perBytecodeProfiler->logEvent(codeBlock, summary, func());
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}
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inline CallFrame* VM::topJSCallFrame() const
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{
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CallFrame* frame = topCallFrame;
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if (UNLIKELY(!frame))
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return frame;
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if (LIKELY(!frame->isWasmFrame() && !frame->isStackOverflowFrame()))
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return frame;
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EntryFrame* entryFrame = topEntryFrame;
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do {
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frame = frame->callerFrame(entryFrame);
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ASSERT(!frame || !frame->isStackOverflowFrame());
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} while (frame && frame->isWasmFrame());
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return frame;
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}
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} // namespace JSC
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