/* * Copyright (C) 2017-2018 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 #if HAVE(FAST_TLS) #include <pthread.h> #include <System/pthread_machdep.h> #include <wtf/Platform.h> namespace WTF { // __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY0-1 is taken by bmalloc, so WTF's KEY0 maps to the // system's KEY2. #define WTF_FAST_TLS_KEY0 __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY2 #define WTF_FAST_TLS_KEY1 __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY3 #define WTF_FAST_TLS_KEY2 __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY4 // NOTE: We should manage our use of these keys here. If you want to use a key for something, // put a #define in here to give your key a symbolic name. This ensures that we don't // accidentally use the same key for more than one thing. #define WTF_THREAD_DATA_KEY WTF_FAST_TLS_KEY0 #define WTF_WASM_CONTEXT_KEY WTF_FAST_TLS_KEY1 #define WTF_TESTING_KEY WTF_WASM_CONTEXT_KEY // So far, this key is only used in places that don't do WebAssembly, so it's OK that they share the same key. #define WTF_GC_TLC_KEY WTF_FAST_TLS_KEY2 #if ENABLE(FAST_TLS_JIT) inline unsigned fastTLSOffsetForKey(unsigned long slot) { return slot * sizeof(void*); } #endif } // namespace WTF #if ENABLE(FAST_TLS_JIT) using WTF::fastTLSOffsetForKey; #endif #endif // HAVE(FAST_TLS)