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git-svn-id: file:///Users/frsyuki/project/msgpack-git/svn/x@92 5a5092ae-2292-43ba-b2d5-dcab9c1a2731
104 lines
2.2 KiB
Plaintext
104 lines
2.2 KiB
Plaintext
//
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// MessagePack for C++ memory pool
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//
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// Copyright (C) 2008 FURUHASHI Sadayuki
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef MSGPACK_ZONE_HPP__
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#define MSGPACK_ZONE_HPP__
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#include "msgpack/object.hpp"
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#include <cstdlib>
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#include <vector>
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#ifndef MSGPACK_ZONE_CHUNK_SIZE
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#define MSGPACK_ZONE_CHUNK_SIZE 2048
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#endif
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<% GENERATION_LIMIT = 15 %>
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namespace msgpack {
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class zone {
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public:
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zone(size_t chunk_size = MSGPACK_ZONE_CHUNK_SIZE);
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~zone();
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public:
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void* malloc(size_t size);
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void push_finalizer(void (*func)(void*), void* obj);
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void clear();
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bool empty() const;
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<%0.upto(GENERATION_LIMIT) {|i|%>
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template <typename T<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
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T* allocate(<%=(1..i).map{|j|"A#{j} a#{j}"}.join(', ')%>);
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<%}%>
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private:
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struct chunk {
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size_t free;
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void* ptr;
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void* alloc;
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};
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std::vector<chunk> m_chunk_array;
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struct finalizer {
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void (*func)(void*);
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void* obj;
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};
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std::vector<finalizer> m_finalizers;
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template <typename T>
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static void object_destructor(void* obj);
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size_t m_chunk_size;
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private:
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zone(const zone&);
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};
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inline void zone::push_finalizer(void (*func)(void*), void* obj)
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{
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finalizer f = {func, obj};
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m_finalizers.push_back(f);
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}
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template <typename T>
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void zone::object_destructor(void* obj)
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{
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reinterpret_cast<T*>(obj)->~T();
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}
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<%0.upto(GENERATION_LIMIT) {|i|%>
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template <typename T<%1.upto(i) {|j|%>, typename A<%=j%><%}%>>
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T* zone::allocate(<%=(1..i).map{|j|"A#{j} a#{j}"}.join(', ')%>)
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{
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void* x = malloc(sizeof(T));
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push_finalizer(&zone::object_destructor<T>, x);
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try { return new (x) T(<%=(1..i).map{|j|"a#{j}"}.join(', ')%>); }
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catch (...) { m_finalizers.pop_back(); throw; }
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}
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<%}%>
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} // namespace msgpack
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#endif /* msgpack/zone.hpp */
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