| /* |
| * 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 |
| |
| // 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. |
| |
| #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) |
| |
