| /* |
| * Copyright (C) 2017 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 |
| |
| #include "IsoConfig.h" |
| #include "Mutex.h" |
| |
| namespace bmalloc { |
| |
| template<typename Config> class IsoHeapImpl; |
| |
| namespace api { |
| |
| // You have to declare IsoHeaps this way: |
| // |
| // static IsoHeap<type> myTypeHeap; |
| // |
| // It's not valid to create an IsoHeap except in static storage. |
| |
| template<typename Type> |
| struct IsoHeap { |
| typedef IsoConfig<sizeof(Type)> Config; |
| |
| void* allocate(); |
| void* tryAllocate(); |
| void deallocate(void* p); |
| |
| void scavenge(); |
| |
| bool isInitialized(); |
| |
| unsigned allocatorOffset() { return m_allocatorOffsetPlusOne - 1; } |
| void setAllocatorOffset(unsigned value) { m_allocatorOffsetPlusOne = value + 1; } |
| |
| unsigned deallocatorOffset() { return m_deallocatorOffsetPlusOne - 1; } |
| void setDeallocatorOffset(unsigned value) { m_deallocatorOffsetPlusOne = value + 1; } |
| |
| IsoHeapImpl<Config>& impl(); |
| |
| Mutex m_initializationLock; |
| unsigned m_allocatorOffsetPlusOne; |
| unsigned m_deallocatorOffsetPlusOne; |
| IsoHeapImpl<Config>* m_impl; |
| }; |
| |
| // Use this together with MAKE_BISO_MALLOCED_IMPL. |
| #define MAKE_BISO_MALLOCED(isoType, exportMacro) \ |
| public: \ |
| static exportMacro ::bmalloc::api::IsoHeap<isoType>& bisoHeap(); \ |
| \ |
| void* operator new(size_t, void* p) { return p; } \ |
| void* operator new[](size_t, void* p) { return p; } \ |
| \ |
| exportMacro void* operator new(size_t size);\ |
| exportMacro void operator delete(void* p);\ |
| \ |
| void* operator new[](size_t size) = delete; \ |
| void operator delete[](void* p) = delete; \ |
| private: \ |
| typedef int __makeBisoMallocedMacroSemicolonifier |
| |
| } } // namespace bmalloc::api |