greenplumn CAutoMemoryPool 源码
greenplumn CAutoMemoryPool 代码
文件路径：/src/backend/gporca/libgpos/include/gpos/memory/CAutoMemoryPool.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2008-2010 Greenplum Inc.
// Copyright (C) 2011 EMC Corp.
//
// @filename:
// CMemoryPool.h
//
// @doc:
// Memory pool wrapper that cleans up the pool automatically
//
//
// @owner:
//
// @test:
//
//---------------------------------------------------------------------------
#ifndef GPOS_CAutoMemoryPool_H
#define GPOS_CAutoMemoryPool_H
#include "gpos/assert.h"
#include "gpos/common/CStackObject.h"
#include "gpos/memory/CMemoryPool.h"
#include "gpos/memory/CMemoryPoolManager.h"
#include "gpos/types.h"
namespace gpos
{
//---------------------------------------------------------------------------
// @class:
// CAutoMemoryPool
//
// @doc:
// Automatic memory pool interface;
// tears down memory pool when going out of scope;
//
// For cleanliness, do not provide an automatic cast to CMemoryPool
//
//---------------------------------------------------------------------------
class CAutoMemoryPool : public CStackObject
{
public:
enum ELeakCheck
{
ElcNone, // no leak checking -- to be deprecated
ElcExc, // check for leaks unless an exception is pending (default)
ElcStrict // always check for leaks
};
private:
// memory pool to protect
CMemoryPool *m_mp;
#ifdef GPOS_DEBUG
// type of leak check to perform
ELeakCheck m_leak_check_type;
#endif
public:
CAutoMemoryPool(const CAutoMemoryPool &) = delete;
// ctor
CAutoMemoryPool(ELeakCheck leak_check_type = ElcExc);
// FIXME: should mark this noexcept in non-assert builds
// dtor
~CAutoMemoryPool() noexcept(false);
// accessor
CMemoryPool *
Pmp() const
{
return m_mp;
}
// detach from pool
CMemoryPool *Detach();
}; // CAutoMemoryPool
} // namespace gpos
#endif // GPOS_CAutoMemoryPool_H
// EOF
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