+/* sigwait.c
+ *
+ * Copyright (C) 2021 Simone Piccardi
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/****************************************************************
+ *
+ * Program sigwait.c:
+ * Test program for sigwait function
+ *
+ * Author: Simone Piccardi
+ * Nov. 2021
+ *
+ ****************************************************************/
+/*
+ * Include needed headers
+ */
+#define _GNU_SOURCE
+#include <unistd.h> /* unix standard library */
+#include <signal.h> /* signal constants, types and functions */
+#include <errno.h> /* error definitions and routines */
+#include <stdlib.h> /* C standard library */
+#include <unistd.h> /* unix standard library */
+#include <stdio.h> /* standard I/O library */
+#include <string.h> /* C strings library */
+
+int main(int argc, char *argv[])
+{
+/*
+ * Variables definition
+ */
+ int i;
+ pid_t pid = 0;
+ int sig,res;
+ sigset_t set;
+
+ sigemptyset(&set);
+ sigaddset(&set, SIGALRM);
+// while (1) {
+ res=sigwait(&set, &sig);
+ printf("Sig was %d", sig);
+ if ( res > 0) {
+ printf("Errno was %d", errno);
+ perror("errore");
+ printf("Result was %d", res);
+ printf("Error by res was %s", strerror(res));
+ exit(11);
+ } else {
+ printf("Result was %d", res);
+ printf("Normal exit");
+ }
+// }
+}
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