From f9fea5c2a3ef4d84a0e3f3474990af04932a4d86 Mon Sep 17 00:00:00 2001
From: zeussuse <193160247+zeussuse@users.noreply.github.com>
Date: Wed, 26 Mar 2025 23:23:16 +0000
Subject: [PATCH] Create realtime.c

---
 src/realtime.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 src/realtime.c

diff --git a/src/realtime.c b/src/realtime.c
new file mode 100644
index 00000000..cb3ffd46
--- /dev/null
+++ b/src/realtime.c
@@ -0,0 +1,37 @@
+#include <sys/resource.h>
+#include <sched.h>
+#include <unistd.h>
+#include <pthread.h>
+#include "labwc.h"
+ 
+static void child_fork_callback(void) {
+ 
+	struct sched_param param;
+	param.sched_priority = 0;
+	int ret = pthread_setschedparam(pthread_self(), SCHED_OTHER, &param);
+	if (ret != 0) {
+		wlr_log(WLR_ERROR, "Failed to reset scheduler policy on fork");
+	}
+}
+
+void set_rr_scheduling(void) {
+	int prio = sched_get_priority_min(SCHED_RR);
+	int old_policy;
+	int ret;
+	struct sched_param param;
+	ret = pthread_getschedparam(pthread_self(), &old_policy, &param);
+	if (ret != 0) {
+		wlr_log(WLR_DEBUG, "Failed to get old scheduling priority");
+		return;
+	}
+  
+	param.sched_priority = prio;
+	ret = pthread_setschedparam(pthread_self(), SCHED_RR, &param);
+  
+	if (ret != 0) {
+		wlr_log(WLR_INFO, "Failed to set scheduling priority to %d", prio);
+		return;
+	}
+  
+	pthread_atfork(NULL, NULL, child_fork_callback);
+}