mitsuba/include/mitsuba/bidir/mempool.h

99 lines
2.5 KiB
C++

/*
This file is part of Mitsuba, a physically based rendering system.
Copyright (c) 2007-2012 by Wenzel Jakob and others.
Mitsuba is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License Version 3
as published by the Free Software Foundation.
Mitsuba is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#if !defined(__MITSUBA_BIDIR_MEMPOOL_H_)
#define __MITSUBA_BIDIR_MEMPOOL_H_
#include <mitsuba/bidir/vertex.h>
#include <mitsuba/bidir/edge.h>
#include <mitsuba/core/mempool.h>
MTS_NAMESPACE_BEGIN
class MemoryPool {
public:
/// Create a new memory pool with aninitial set of 128 entries
MemoryPool(size_t nEntries = 128)
: m_vertexPool(nEntries), m_edgePool(nEntries) { }
/// Destruct the memory pool and release all entries
~MemoryPool() { }
/// Acquire an edge
inline PathEdge *allocEdge() {
PathEdge *edge = m_edgePool.alloc();
#if defined(MTS_BD_DEBUG_HEAVY)
memset(edge, 0xFF, sizeof(PathEdge));
#endif
return edge;
}
/// Acquire an vertex
inline PathVertex *allocVertex() {
PathVertex *vertex = m_vertexPool.alloc();
#if defined(MTS_BD_DEBUG_HEAVY)
memset(vertex, 0xFF, sizeof(PathVertex));
#endif
return vertex;
}
/// Release an edge
inline void release(PathEdge *edge) {
m_edgePool.release(edge);
}
/// Release an entry
inline void release(PathVertex *vertex) {
m_vertexPool.release(vertex);
}
/// Check if every entry has been released
bool unused() const {
return m_vertexPool.unused() && m_edgePool.unused();
}
/// Return the currently allocated amount of storage for edges
inline size_t edgeSize() {
return m_edgePool.size();
}
/// Return the currently allocated amount of storage for vertices
inline size_t vertexSize() {
return m_vertexPool.size();
}
/// Return a human-readable description
std::string toString() const {
std::ostringstream oss;
oss << "MemoryPool[" << endl
<< " vertexPool = " << m_vertexPool.toString() << "," << endl
<< " edgePool = " << m_edgePool.toString() << endl
<< "]";
return oss.str();
}
private:
BasicMemoryPool<PathVertex> m_vertexPool;
BasicMemoryPool<PathEdge> m_edgePool;
};
MTS_NAMESPACE_END
#endif /* __MITSUBA_BIDIR_MEMPOOL_H_ */