/* * Copyright (C) 2015-2018 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 #include "CallFrameInlines.h" #include "EntryFrame.h" #include "ProfilerDatabase.h" #include "VM.h" #include "Watchdog.h" namespace JSC { bool VM::ensureStackCapacityFor(Register* newTopOfStack) { #if !ENABLE(C_LOOP) ASSERT(Thread::current().stack().isGrowingDownward()); return newTopOfStack >= m_softStackLimit; #else return ensureStackCapacityForCLoop(newTopOfStack); #endif } bool VM::isSafeToRecurseSoft() const { bool safe = isSafeToRecurse(m_softStackLimit); #if ENABLE(C_LOOP) safe = safe && isSafeToRecurseSoftCLoop(); #endif return safe; } template<typename Func> void VM::logEvent(CodeBlock* codeBlock, const char* summary, const Func& func) { if (LIKELY(!m_perBytecodeProfiler)) return; m_perBytecodeProfiler->logEvent(codeBlock, summary, func()); } inline CallFrame* VM::topJSCallFrame() const { CallFrame* frame = topCallFrame; if (UNLIKELY(!frame)) return frame; if (LIKELY(!frame->isWasmFrame() && !frame->isStackOverflowFrame())) return frame; EntryFrame* entryFrame = topEntryFrame; do { frame = frame->callerFrame(entryFrame); ASSERT(!frame || !frame->isStackOverflowFrame()); } while (frame && frame->isWasmFrame()); return frame; } } // namespace JSC