greenplumn CMemoryVisitorPrint 源码
greenplumn CMemoryVisitorPrint 代码
文件路径：/src/backend/gporca/libgpos/include/gpos/memory/CMemoryVisitorPrint.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2008-2010 Greenplum Inc.
// Copyright (C) 2011 EMC Corp.
//
// @filename:
// CMemoryVisitorPrint.h
//
// @doc:
// Memory object visitor that prints debug information for all allocated
// objects inside a memory pool.
//
// @owner:
//
// @test:
//
//---------------------------------------------------------------------------
#ifndef GPOS_CMemoryVisitorPrint_H
#define GPOS_CMemoryVisitorPrint_H
#include "gpos/assert.h"
#include "gpos/memory/IMemoryVisitor.h"
#include "gpos/types.h"
#include "gpos/utils.h"
namespace gpos
{
// specialization of memory object visitor that prints out
// the debugging information to a stream
class CMemoryVisitorPrint : public IMemoryVisitor
{
private:
// call counter for the visit function
ULLONG m_visits;
// stream used for writing debug information
IOstream &m_os;
public:
CMemoryVisitorPrint(CMemoryVisitorPrint &) = delete;
// ctor
CMemoryVisitorPrint(IOstream &os);
// dtor
~CMemoryVisitorPrint() override;
// output information about a memory allocation
void Visit(void *user_addr, SIZE_T user_size, void *total_addr,
SIZE_T total_size, const CHAR *alloc_filename,
const ULONG alloc_line, ULLONG alloc_seq_number,
CStackDescriptor *stack_desc) override;
// visit counter accessor
ULLONG
GetNumVisits() const
{
return m_visits;
}
};
} // namespace gpos
#endif // GPOS_CMemoryVisitorPrint_H
// EOF
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