123 lines
4.2 KiB
C++
123 lines
4.2 KiB
C++
/*
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* Copyright (C) 2017-2021 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 <wtf/FastMalloc.h>
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#include <wtf/StdLibExtras.h>
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#if defined(USE_SYSTEM_MALLOC) && USE_SYSTEM_MALLOC
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#define GIGACAGE_ENABLED 0
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namespace Gigacage {
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constexpr bool hasCapacityToUseLargeGigacage = OS_CONSTANT(EFFECTIVE_ADDRESS_WIDTH) > 36;
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const size_t primitiveGigacageMask = 0;
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const size_t jsValueGigacageMask = 0;
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enum Kind {
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Primitive,
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JSValue,
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NumberOfKinds
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};
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inline void ensureGigacage() { }
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inline void disablePrimitiveGigacage() { }
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inline bool shouldBeEnabled() { return false; }
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inline void addPrimitiveDisableCallback(void (*)(void*), void*) { }
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inline void removePrimitiveDisableCallback(void (*)(void*), void*) { }
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inline void forbidDisablingPrimitiveGigacage() { }
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ALWAYS_INLINE const char* name(Kind kind)
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{
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switch (kind) {
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case Primitive:
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return "Primitive";
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case JSValue:
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return "JSValue";
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case NumberOfKinds:
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break;
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}
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RELEASE_ASSERT_NOT_REACHED();
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return nullptr;
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}
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ALWAYS_INLINE bool contains(const void*) { return false; }
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ALWAYS_INLINE bool disablingPrimitiveGigacageIsForbidden() { return false; }
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ALWAYS_INLINE bool isEnabled() { return false; }
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ALWAYS_INLINE bool isEnabled(Kind) { return false; }
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ALWAYS_INLINE size_t mask(Kind) { return 0; }
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ALWAYS_INLINE size_t footprint(Kind) { return 0; }
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ALWAYS_INLINE size_t maxSize(Kind) { return 0; }
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ALWAYS_INLINE size_t size(Kind) { return 0; }
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template<typename T>
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inline T* caged(Kind, T* ptr) { return ptr; }
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template<typename T>
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inline T* cagedMayBeNull(Kind, T* ptr) { return ptr; }
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inline bool isCaged(Kind, const void*) { return false; }
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inline void* tryAlignedMalloc(Kind, size_t alignment, size_t size) { return tryFastAlignedMalloc(alignment, size); }
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inline void alignedFree(Kind, void* p) { fastAlignedFree(p); }
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WTF_EXPORT_PRIVATE void* tryMalloc(Kind, size_t size);
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WTF_EXPORT_PRIVATE void* tryRealloc(Kind, void*, size_t);
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inline void free(Kind, void* p) { fastFree(p); }
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WTF_EXPORT_PRIVATE void* tryAllocateZeroedVirtualPages(Kind, size_t size);
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WTF_EXPORT_PRIVATE void freeVirtualPages(Kind, void* basePtr, size_t size);
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} // namespace Gigacage
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#else
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#include <bmalloc/Gigacage.h>
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namespace Gigacage {
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WTF_EXPORT_PRIVATE void* tryAlignedMalloc(Kind, size_t alignment, size_t size);
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WTF_EXPORT_PRIVATE void alignedFree(Kind, void*);
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WTF_EXPORT_PRIVATE void* tryMalloc(Kind, size_t);
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WTF_EXPORT_PRIVATE void* tryRealloc(Kind, void*, size_t);
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WTF_EXPORT_PRIVATE void free(Kind, void*);
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WTF_EXPORT_PRIVATE void* tryAllocateZeroedVirtualPages(Kind, size_t size);
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WTF_EXPORT_PRIVATE void freeVirtualPages(Kind, void* basePtr, size_t size);
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} // namespace Gigacage
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#endif
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namespace Gigacage {
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WTF_EXPORT_PRIVATE void* tryMallocArray(Kind, size_t numElements, size_t elementSize);
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WTF_EXPORT_PRIVATE void* malloc(Kind, size_t);
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WTF_EXPORT_PRIVATE void* mallocArray(Kind, size_t numElements, size_t elementSize);
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} // namespace Gigacage
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