mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-26 21:50:53 +00:00
81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/*
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* Copyright (C) 2017 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(WEBASSEMBLY)
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#include "Options.h"
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#include "WasmContext.h"
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#include "WasmInstance.h"
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#include <mutex>
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#include <wtf/FastTLS.h>
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namespace JSC { namespace Wasm {
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inline bool Context::useFastTLS()
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{
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#if ENABLE(FAST_TLS_JIT)
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return Options::useFastTLSForWasmContext();
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#else
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return false;
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#endif
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}
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inline Instance* Context::load() const
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{
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#if ENABLE(FAST_TLS_JIT)
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if (useFastTLS())
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return bitwise_cast<Instance*>(_pthread_getspecific_direct(WTF_WASM_CONTEXT_KEY));
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#endif
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return instance;
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}
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inline void Context::store(Instance* inst, void* softStackLimit)
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{
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if (inst)
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inst->setCachedStackLimit(softStackLimit);
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#if ENABLE(FAST_TLS_JIT)
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if (useFastTLS())
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_pthread_setspecific_direct(WTF_WASM_CONTEXT_KEY, bitwise_cast<void*>(inst));
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else
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#endif
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instance = inst;
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}
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inline Instance* Context::tryLoadInstanceFromTLS()
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{
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#if ENABLE(FAST_TLS_JIT)
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if (useFastTLS())
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return bitwise_cast<Instance*>(_pthread_getspecific_direct(WTF_WASM_CONTEXT_KEY));
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#endif
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return nullptr;
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}
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} } // namespace JSC::Wasm
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#endif // ENABLE(WEBASSEMBLY)
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