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/*-------------------------------------------------------------------------
*
* timeout.h
* Routines to multiplex SIGALRM interrupts for multiple timeout reasons.
*
*
* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/utils/timeout.h
*
*-------------------------------------------------------------------------
*/
#ifndef TIMEOUT_H
#define TIMEOUT_H
#include "datatype/timestamp.h"
/*
* Identifiers for timeout reasons. Note that in case multiple timeouts
* trigger at the same time, they are serviced in the order of this enum.
*/
typedef enum TimeoutId
{
/* Predefined timeout reasons */
STARTUP_PACKET_TIMEOUT,
DEADLOCK_TIMEOUT,
STATEMENT_TIMEOUT,
STANDBY_DEADLOCK_TIMEOUT,
STANDBY_TIMEOUT,
/* First user-definable timeout reason */
USER_TIMEOUT,
/* Maximum number of timeout reasons */
MAX_TIMEOUTS = 16
} TimeoutId;
/* callback function signature */
typedef void (*timeout_handler) (void);
/* timeout setup */
extern void InitializeTimeouts(void);
extern TimeoutId RegisterTimeout(TimeoutId id, timeout_handler handler);
/* timeout operation */
extern void enable_timeout_after(TimeoutId id, int delay_ms);
extern void enable_timeout_at(TimeoutId id, TimestampTz fin_time);
extern void disable_timeout(TimeoutId id, bool keep_indicator);
extern void disable_all_timeouts(bool keep_indicators);
/* accessors */
extern bool get_timeout_indicator(TimeoutId id);
extern TimestampTz get_timeout_start_time(TimeoutId id);
#endif /* TIMEOUT_H */
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