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//
// MessagePack for C++ memory pool
//
// Copyright (C) 2008 FURUHASHI Sadayuki
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "zone.hpp"
namespace msgpack {
void* zone::alloc()
{
if(m_pool.size()*ZONE_CHUNK_SIZE <= m_used) {
cell_t* chunk = (cell_t*)malloc(sizeof(cell_t)*ZONE_CHUNK_SIZE);
if(!chunk) { throw std::bad_alloc(); }
try {
m_pool.push_back(chunk);
} catch (...) {
free(chunk);
throw;
}
}
void* data = m_pool[m_used/ZONE_CHUNK_SIZE][m_used%ZONE_CHUNK_SIZE].data;
++m_used;
return data;
}
void zone::clear()
{
if(!m_pool.empty()) {
for(size_t b=0; b < m_used/ZONE_CHUNK_SIZE; ++b) {
cell_t* c(m_pool[b]);
for(size_t e=0; e < ZONE_CHUNK_SIZE; ++e) {
reinterpret_cast<object_class*>(c[e].data)->~object_class();
}
}
cell_t* c(m_pool.back());
for(size_t e=0; e < m_used%ZONE_CHUNK_SIZE; ++e) {
reinterpret_cast<object_class*>(c[e].data)->~object_class();
}
for(pool_t::iterator it(m_pool.begin()), it_end(m_pool.end());
it != it_end;
++it) {
free(*it);
}
m_pool.clear();
}
m_used = 0;
for(user_finalizer_t::reverse_iterator it(m_user_finalizer.rbegin()), it_end(m_user_finalizer.rend());
it != it_end;
++it) {
it->call();
}
m_user_finalizer.clear();
}
} // namespace msgpack
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