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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Quagga Signal handling header.
*
* Copyright (C) 2004 Paul Jakma.
*/
#ifndef _FRR_SIGNAL_H
#define _FRR_SIGNAL_H
#include <frrevent.h>
#ifdef __cplusplus
extern "C" {
#endif
#define FRR_SIGNAL_TIMER_INTERVAL 2L
struct frr_signal_t {
int signal; /* signal number */
void (*handler)(void); /* handler to call */
volatile sig_atomic_t caught; /* private member */
};
/* initialise sigevent system
* takes:
* - pointer to valid struct event_loop
* - number of elements in passed in signals array
* - array of frr_signal_t's describing signals to handle
* and handlers to use for each signal
*/
extern void signal_init(struct event_loop *m, int sigc,
struct frr_signal_t *signals);
/*
* Check whether any signals have been received and are pending. This is done
* with the application's key signals blocked. The complete set of signals
* is returned in 'setp', so the caller can restore them when appropriate.
* If there are pending signals, returns 'true', 'false' otherwise.
*/
bool frr_sigevent_check(sigset_t *setp);
/* check whether there are signals to handle, process any found */
extern int frr_sigevent_process(void);
#ifdef __cplusplus
}
#endif
#endif /* _FRR_SIGNAL_H */
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