Handle SIGUSR1 for forced refreshes - slstatus - status monitor

git clone git://git.suckless.org/slstatus

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---

commit d1b23e5509863fd0790261b2b388e687d5218d53

parent 3fc2872d1b3e62903a4af49326d42c97c11911d5

Author: Mart Lubbers 

Date:   Thu, 18 Jun 2020 08:46:12 +0200

Handle SIGUSR1 for forced refreshes

At some point one might want to force a refresh for example after
checking email or changing the volume. Sending a SIGUSR1 achieves this
now

Diffstat:
  M slstatus.c                          |       9 +++++----

1 file changed, 5 insertions(+), 4 deletions(-)
---

diff --git a/slstatus.c b/slstatus.c

@@ -18,7 +18,7 @@ struct arg {
 };
 
 char buf[1024];
-static int done;
+static volatile sig_atomic_t done;
 static Display *dpy;
 
 #include "config.h"
@@ -26,9 +26,8 @@ static Display *dpy;
 static void
 terminate(const int signo)
 {
-        (void)signo;
-
-        done = 1;
+        if (signo != SIGUSR1)
+                done = 1;
 }
 
 static void
@@ -72,6 +71,8 @@ main(int argc, char *argv[])
         act.sa_handler = terminate;
         sigaction(SIGINT,  &act, NULL);
         sigaction(SIGTERM, &act, NULL);
+        act.sa_flags |= SA_RESTART;
+        sigaction(SIGUSR1, &act, NULL);
 
         if (!sflag && !(dpy = XOpenDisplay(NULL))) {
                 die("XOpenDisplay: Failed to open display");