From 4abaf79e90a54c645fbd1a8439a976ee2ba5dde7 Mon Sep 17 00:00:00 2001
From: Karsaell <pieds.nus@zaclys.net>
Date: Wed, 5 Oct 2022 14:25:12 +0200
Subject: [PATCH] [patch][auto-timeout] updated patch autotimeout

Previous patch had an infinite loop without sleep()
causing slock to run at 100% CPU
(Noticed it because my laptop's fan started a few seconds after slock)

Now the timeout and its command are run in a separate thread
This adds a dependency to pthread at compile time
  (not sure if this can be an issue ?)
---
 config.def.h |  8 ++++++++
 config.mk    |  2 +-
 slock.c      | 20 ++++++++++++++++++++
 3 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/config.def.h b/config.def.h
index 9855e21..a1179a8 100644
--- a/config.def.h
+++ b/config.def.h
@@ -10,3 +10,11 @@ static const char *colorname[NUMCOLS] = {
 
 /* treat a cleared input like a wrong password (color) */
 static const int failonclear = 1;
+
+/* Patch: auto-timeout */
+/* should [command] be run only once? */
+static const int runonce = 0;
+/* length of time (seconds) until [command] is executed */
+static const int timeoffset = 30;
+/* command to be run after [timeoffset] seconds has passed */
+static const char *command = "/usr/bin/xset dpms force off";
diff --git a/config.mk b/config.mk
index 1e1ca45..8955075 100644
--- a/config.mk
+++ b/config.mk
@@ -29,4 +29,4 @@ COMPATSRC = explicit_bzero.c
 #COMPATSRC =
 
 # compiler and linker
-CC = cc
+CC = cc -pthread
diff --git a/slock.c b/slock.c
index 5ae738c..c56c944 100644
--- a/slock.c
+++ b/slock.c
@@ -19,6 +19,10 @@
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
 
+/*POSIX threading for auto-timeout*/
+#include <pthread.h>
+#include <time.h>
+
 #include "arg.h"
 #include "util.h"
 
@@ -219,6 +223,18 @@ readpw(Display *dpy, struct xrandr *rr, struct lock **locks, int nscreens,
 	}
 }
 
+void *timeoutCommand(void *args)
+{
+	int runflag=0;
+	while (!runonce || !runflag)
+	{
+		sleep(timeoffset);
+		runflag = 1;
+		system(command);
+	}
+	return args;
+}
+
 static struct lock *
 lockscreen(Display *dpy, struct xrandr *rr, int screen)
 {
@@ -388,6 +404,10 @@ main(int argc, char **argv) {
 		}
 	}
 
+	/*Start the auto-timeout command in its own thread*/
+	pthread_t thread_id;
+	pthread_create(&thread_id, NULL, timeoutCommand, NULL);
+
 	/* everything is now blank. Wait for the correct password */
 	readpw(dpy, &rr, locks, nscreens, hash);
 
-- 
2.30.2