allow suppressing next suspend

diff --git a/sleepy.c b/sleepy.c
index 7c871e8..4f78424 100644 (file)
--- a/sleepy.c
+++ b/sleepy.c
@@ -1,7 +1,22 @@
 #include <time.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+time_t last;
+
+void keep_running(int _) {
+  time(&last);
+  puts("\nmarching on...");
+}
 
 int main(void) {
-  time_t last = 0;
+  puts("stops roughly at 15-minute time boundaries");
+  puts("CTRL+C for no stop in the next 5 minutes");
+  puts("stop with ctrl+\\ (SIGQUIT)");
+  signal(SIGQUIT, exit);
+  signal(SIGINT, keep_running);
   while(1) {
     sleep(30);
     time_t unixtime = time(NULL);