signal.c File Reference

Linux signalfd(2). More...

#include <errno.h>
#include <signal.h>
#include <sys/signalfd.h>
#include <unistd.h>
#include "uev.h"

Include dependency graph for signal.c:

Functions
int	uev_signal_init (uev_ctx_t *ctx, uev_t *w, uev_cb_t *cb, void *arg, int signo)
	Create a signal watcher. More...
int	uev_signal_set (uev_t *w, int signo)
	Reset a signal watcher. More...
int	uev_signal_start (uev_t *w)
	Start a stopped signal watcher. More...
int	uev_signal_stop (uev_t *w)
	Stop a signal watcher. More...

Detailed Description

Linux signalfd(2).

Notice how uev::siginfo returns a struct signalfd_siginfo with useful data on the sender of the signal, this information is only available to signal callbacks.

Function Documentation

uev_signal_init()

int uev_signal_init	(	uev_ctx_t *	ctx,
		uev_t *	w,
		uev_cb_t *	cb,
		void *	arg,
		int	signo
	)

Create a signal watcher.

Parameters

ctx	A valid libuEv context
w	Pointer to an uev_t watcher
cb	Signal callback
arg	Optional callback argument
signo	Signal to watch for

Returns

POSIX OK(0) or non-zero with errno set on error.

uev_signal_set()

int uev_signal_set	(	uev_t *	w,
		int	signo
	)

Reset a signal watcher.

Parameters

w	Watcher to reset
signo	New signal to watch for

Returns

POSIX OK(0) or non-zero with errno set on error.

uev_signal_start()

int uev_signal_start

(

uev_t *

w

)

Start a stopped signal watcher.

Parameters

w	Watcher to start (again)

Returns

POSIX OK(0) or non-zero with errno set on error.

uev_signal_stop()

int uev_signal_stop

(

uev_t *

w

)

Stop a signal watcher.

Parameters

w	Watcher to stop

Returns

POSIX OK(0) or non-zero with errno set on error.