/*-------------------------------------------------------------------------

*

* Query cancellation support for frontend code

*

*

* Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group

* Portions Copyright (c) 1994, Regents of the University of California

*

* src/include/fe_utils/cancel.h

*

*-------------------------------------------------------------------------

*/

#ifndef CANCEL_H

#define CANCEL_H

#include <signal.h>

#include "libpq-fe.h"

extern PGDLLIMPORT volatile sig_atomic_t CancelRequested;

extern void SetCancelConn(PGconn *conn);

extern void ResetCancelConn(void);

/*

* A callback can be optionally set up to be called at cancellation

* time.

*/

extern void setup_cancel_handler(void (*query_cancel_callback) (void));

#endif /* CANCEL_H */