/*
* 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
using WTF::fastTLSOffsetForKey;
#endif // HAVE(FAST_TLS)
