//---------------------------------------------------------------------------
//	Greenplum Database
//	Copyright (C) 2012 EMC Corp.
//
//	@filename:
//		CAutoExceptionStack.h
//
//	@doc:
//		Auto object for saving and restoring exception stack
//
//	@owner:
//		elhela
//
//	@test:
//
//
//---------------------------------------------------------------------------
#ifndef GPOS_CAutoExceptionStack_H
#define GPOS_CAutoExceptionStack_H

#include "gpos/base.h"
#include "gpos/common/CStackObject.h"

namespace gpos
{
//---------------------------------------------------------------------------
//	@class:
//		CAutoExceptionStack
//
//	@doc:
//		Auto object for saving and restoring exception stack
//
//---------------------------------------------------------------------------
class CAutoExceptionStack : public CStackObject
{
private:
	// address of the global exception stack value
	void **m_global_exception_stack;

	// value of exception stack when object is created
	void *m_exception_stack;

	// address of the global error context stack value
	void **m_global_error_context_stack;

	// value of error context stack when object is created
	void *m_error_context_stack;

public:
	CAutoExceptionStack(const CAutoExceptionStack &) = delete;

	// ctor
	CAutoExceptionStack(void **global_exception_stack,
						void **global_error_context_stack);

	// dtor
	~CAutoExceptionStack();

	// set the exception stack to the given address
	void SetLocalJmp(void *local_jump);

};	// class CAutoExceptionStack
}  // namespace gpos

#endif	// !GPOS_CAutoExceptionStack_H

// EOF