Separate watchdog & stats timer signals

include/stats.h

 #include <string.h>
 
 #define PYFCGI_STATS_SZ (900)
+#define PYFCGI_STATS_SIGALRM 30
 
 typedef struct pyfcgi_stats_s pyfcgi_stats_t;
 typedef struct pyfcgi_stats_sample_s pyfcgi_stats_sample_t;

src/stats.c

 {
 	struct sigaction act;
 	struct itimerspec timeout;
+	struct sigevent sev;
 
 	memset(&pyfcgi_stats, 0, sizeof(pyfcgi_stats_t));
 
-	if(timer_create(CLOCK_REALTIME, NULL, &(pyfcgi_stats.timerid)) < 0)
+	sev.sigev_notify = SIGEV_SIGNAL;
+	sev.sigev_signo = PYFCGI_STATS_SIGALRM;
+	sev.sigev_value.sival_int = 0;
+
+	if(timer_create(CLOCK_REALTIME, &sev, &(pyfcgi_stats.timerid)) < 0)
 	{
 		pyfcgi_log(LOG_ERR,
 			"Unable to create timer for stats collecting : %s",
 	sigemptyset(&act.sa_mask);
 	act.sa_flags = 0;
 	act.sa_restorer = NULL;
-	if(sigaction(SIGALRM, &act, &(pyfcgi_stats.oldact)) < 0)
+	if(sigaction(PYFCGI_STATS_SIGALRM, &act, &(pyfcgi_stats.oldact)) < 0)
 	{
 		pyfcgi_log(LOG_ERR,
 			"Unable to register signal handler for stats collecting : %s",