cancel.h

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