Signal handling integration with glib main loop
[ICd internal functions]

Typedefs
typedef void(*	icd_signal_handler_fn )(int sig)
Functions
static void	icd_signal_handler (int sig)
static gboolean	icd_signal_cb (GIOChannel *chan, GIOCondition cond, gpointer data)
int	icd_signal_init (icd_signal_handler_fn signal_handler,...)
Variables
static int	signal_pipe [2]

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Typedef Documentation

typedef void(* icd_signal_handler_fn)(int sig)

The signal handler function

Parameters:

sig

the received signal

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Function Documentation

static gboolean icd_signal_cb	(	GIOChannel *	chan,
		GIOCondition	cond,
		gpointer	data
	)			[static]

GLib callback called from main loop when the signal pipe receives data. This function only polls the signal pipe and calls signal_handler to do the actual work.

Parameters:

	chan	IO Channel associated with file descriptor.
	cond	Condition which triggered callback.
	data	the signal handler function to call

Referenced by icd_signal_init().

static void icd_signal_handler

(

int

sig

)

[static]

Signal handler.

Parameters:

sig

Received signal number.

Note:

Only queues received signals on pipe which is polled by main thread. Thus signals are handler synchronously on specific point.

References signal_pipe.

Referenced by icd_signal_init().

int icd_signal_init	(	icd_signal_handler_fn	signal_handler,
			...
	)

Initialize signal handling. Create pipe for queueing signals from signal handler to main thread. Hook all processed signals and create a Glib io watch for the pipe.

Parameters:

	signal_handler	function handling the signal
	...	signals to watch, end with -1

References icd_signal_cb(), icd_signal_handler(), ILOG_ERR, and signal_pipe.

Referenced by main().

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Variable Documentation

int signal_pipe[2] [static]

pipe used in communication between the posix signal handler and the glib main loop

Referenced by icd_signal_handler(), and icd_signal_init().