111 lines
3.5 KiB
C++
111 lines
3.5 KiB
C++
/*
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* Copyright (C) 2017-2018 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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#include "PerThread.h"
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#include <cstddef>
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namespace bmalloc {
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class IsoTLSEntry;
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template<typename Config> class IsoAllocator;
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template<typename Config> class IsoDeallocator;
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namespace api {
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template<typename Type> struct IsoHeap;
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}
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class IsoTLS {
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public:
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template<typename Type>
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static void* allocate(api::IsoHeap<Type>&, bool abortOnFailure);
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template<typename Type>
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static void deallocate(api::IsoHeap<Type>&, void* p);
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template<typename Type>
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static void ensureHeap(api::IsoHeap<Type>&);
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BEXPORT static void scavenge();
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template<typename Type>
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static void scavenge(api::IsoHeap<Type>&);
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private:
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IsoTLS();
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template<typename Config, typename Type>
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static void* allocateImpl(api::IsoHeap<Type>&, bool abortOnFailure);
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template<typename Config, typename Type>
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void* allocateFast(api::IsoHeap<Type>&, unsigned offset, bool abortOnFailure);
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template<typename Config, typename Type>
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static void* allocateSlow(api::IsoHeap<Type>&, bool abortOnFailure);
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template<typename Config, typename Type>
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static void deallocateImpl(api::IsoHeap<Type>&, void* p);
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template<typename Config, typename Type>
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void deallocateFast(api::IsoHeap<Type>&, unsigned offset, void* p);
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template<typename Config, typename Type>
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static void deallocateSlow(api::IsoHeap<Type>&, void* p);
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static IsoTLS* get();
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static void set(IsoTLS*);
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template<typename Type>
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static IsoTLS* ensureHeapAndEntries(api::IsoHeap<Type>&);
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BEXPORT static IsoTLS* ensureEntries(unsigned offset);
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static void destructor(void* arg); // FIXME implement this
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static size_t sizeForCapacity(unsigned capacity);
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static unsigned capacityForSize(size_t size);
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size_t size();
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template<typename Func>
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void forEachEntry(const Func&);
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IsoTLSEntry* m_lastEntry { nullptr };
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unsigned m_extent { 0 };
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unsigned m_capacity { 0 };
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char m_data[1];
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#if HAVE_PTHREAD_MACHDEP_H
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static constexpr pthread_key_t tlsKey = __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY1;
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#else
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BEXPORT static bool s_didInitialize;
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BEXPORT static pthread_key_t s_tlsKey;
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#endif
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};
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} // namespace bmalloc
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