/* * Copyright (C) 2008-2017 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. * 3. Neither the name of Apple Inc. ("Apple") nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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. */ #include "config.h" #include "InitializeThreading.h" #include "DisallowVMReentry.h" #include "ExecutableAllocator.h" #include "Heap.h" #include "Identifier.h" #include "JSDateMath.h" #include "JSGlobalObject.h" #include "JSLock.h" #include "LLIntData.h" #include "MacroAssemblerCodeRef.h" #include "Options.h" #include "StructureIDTable.h" #include "SuperSampler.h" #include "WasmThunks.h" #include "WriteBarrier.h" #include <mutex> #include <wtf/MainThread.h> #include <wtf/Threading.h> #include <wtf/dtoa.h> #include <wtf/dtoa/cached-powers.h> using namespace WTF; namespace JSC { static_assert(sizeof(bool) == 1, "LLInt and JIT assume sizeof(bool) is always 1 when touching it directly from assembly code."); void initializeThreading() { static std::once_flag initializeThreadingOnceFlag; std::call_once(initializeThreadingOnceFlag, []{ WTF::initializeThreading(); Options::initialize(); initializePoison(); #if ENABLE(WRITE_BARRIER_PROFILING) WriteBarrierCounters::initialize(); #endif #if ENABLE(ASSEMBLER) ExecutableAllocator::initializeAllocator(); #endif LLInt::initialize(); #ifndef NDEBUG DisallowGC::initialize(); DisallowVMReentry::initialize(); #endif initializeSuperSampler(); Thread& thread = Thread::current(); thread.setSavedLastStackTop(thread.stack().origin()); #if ENABLE(WEBASSEMBLY) Wasm::Thunks::initialize(); #endif if (VM::isInMiniMode()) WTF::fastEnableMiniMode(); }); } } // namespace JSC