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/* |
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* Copyright (C) 2012 David Anderson |
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* |
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* This file is part of JITCraft. |
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* |
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* JITCraft is free software: you can redistribute it and/or modify it under |
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* the terms of the GNU General Public License as published by the Free |
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* Software Foundation, either version 3 of the License, or (at your option) |
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* any later version. |
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* |
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* Foobar is distributed in the hope that it will be useful, but WITHOUT ANY |
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along with |
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* JITCraft. If not, see http://www.gnu.org/licenses/. |
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*/ |
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#ifndef _include_jitcraft_thread_h_ |
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#define _include_jitcraft_thread_h_ |
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#include "PoolAllocator.h" |
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#include "Stack.h" |
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#include "Heap.h" |
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#include "Barriers.h" |
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namespace jc { |
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class TypeManager; |
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class Zone |
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{ |
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PoolAllocator pool_; |
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Stack stack_; |
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UnsafeStack unsafeStack_; |
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Heap heap_; |
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// Map cache. |
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Unbarriered<Map> maps_[MapKinds_Total]; |
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TypeManager *types_; |
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public: |
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Zone(); |
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bool initialize(); |
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PoolAllocator &pool() { |
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return pool_; |
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} |
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Stack &stack() { |
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return stack_; |
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} |
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UnsafeStack &unsafeStack() { |
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return unsafeStack_; |
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} |
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Heap &heap() { |
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return heap_; |
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} |
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Object *allocate(MapKind kind, size_t bytes, Heap::Tenure tenure = Heap::Tenure_Default) { |
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assert(maps_[kind]); |
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return heap_.allocate(maps_[kind], bytes, tenure); |
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} |
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TypeManager *types() const { |
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return types_; |
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} |
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}; |
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// In a multi-threaded system, this would be a TLS variable. |
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// In the interest of simplicity, we are single-threaded for now. |
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extern Zone SingleThreadedZone; |
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static inline Zone *ZONE() |
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{ |
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return &SingleThreadedZone; |
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} |
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class LocalTop |
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{ |
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Top *prev_; |
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Top &mine_; |
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public: |
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LocalTop(Top &mine) |
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: mine_(mine), |
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prev_(ZONE()->stack().top()) |
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{ |
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ZONE()->stack().setTop(&mine_); |
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} |
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~LocalTop() |
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{ |
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ZONE()->stack().setTop(prev_); |
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} |
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}; |
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} |
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#endif // _include_jitcraft_thread_h_ |
