greenplumn IMemoryVisitor 代码
文件路径：/src/backend/gporca/libgpos/include/gpos/memory/IMemoryVisitor.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2008-2010 Greenplum Inc.
/ Copyright (C) 2011 EMC Corp.
/
/ @filename:
/ IMemoryVisitor.h
/
/ @doc:
/ Interface for applying a common operation to all allocated objects
/ inside a memory pool.
/
/ @owner:
/
/ @test:
/
/---------------------------------------------------------------------------
#ifndef GPOS_IMemoryVisitor_H
#define GPOS_IMemoryVisitor_H
#include "gpos/assert.h"
#include "gpos/types.h"
namespace gpos
{
/ prototypes
class CStackDescriptor;
/ wrapper for common operation on allocated memory;
/ called by memory pools when a walk of the memory is requested;
class IMemoryVisitor
{
private:
public:
IMemoryVisitor(IMemoryVisitor &) = delete;
/ ctor
IMemoryVisitor() = default;
/ dtor
virtual ~IMemoryVisitor() = default;
/ executed operation during a walk of objects;
/ file name may be NULL (when debugging is not enabled);
/ line number will be zero in that case;
/ sequence number is a constant in case allocation sequencing is not supported;
virtual 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 *desc) = 0;
};
} / namespace gpos
#endif / GPOS_IMemoryVisitor_H
/ EOF
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