Materiale rimasto indietro e segnali real time

[gapil.git] / listati / rtsigvalsend.c

diff --git a/listati/rtsigvalsend.c b/listati/rtsigvalsend.c
new file mode 100644 (file)
index 0000000..9689734
--- /dev/null
+++ b/listati/rtsigvalsend.c
@@ -0,0 +1,28 @@
+int main(int argc, char *argv[], char *envp[])
+{
+    char buffer[MAXLINE+1];
+    int nread;
+    sigval_t value;
+    int signo = SIGRTMIN+1;
+
+    struct sigaction new_handl, old_handl;
+    sigemptyset(&new_handl.sa_mask);
+    new_handl.sa_sigaction = sig_handler;
+    new_handl.sa_flags=SA_SIGINFO;
+    /* change action for signo signal */
+    sigaction(signo, &new_handl, &old_handl);
+    while (1) {
+       nread = read(STDIN_FILENO, buffer, MAXLINE);
+       if (nread < 0) {
+           printf("Errore in lettura: %s\n", strerror(errno));
+            return 0;
+       }
+       buffer[nread]=0;
+       value.sival_int = strtol(buffer, NULL, 10);
+       if (value.sival_int > 0) {
+           sigqueue(getpid(), signo, value);
+       } else {
+           printf("Ignoring invalid input\n");
+       }
+    }
+}