diff options
Diffstat (limited to 'sway/realtime.c')
-rw-r--r-- | sway/realtime.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/sway/realtime.c b/sway/realtime.c new file mode 100644 index 00000000..11154af0 --- /dev/null +++ b/sway/realtime.c | |||
@@ -0,0 +1,40 @@ | |||
1 | #include <sys/resource.h> | ||
2 | #include <sched.h> | ||
3 | #include <unistd.h> | ||
4 | #include <pthread.h> | ||
5 | #include "sway/server.h" | ||
6 | #include "log.h" | ||
7 | |||
8 | static void child_fork_callback(void) { | ||
9 | struct sched_param param; | ||
10 | |||
11 | param.sched_priority = 0; | ||
12 | |||
13 | int ret = pthread_setschedparam(pthread_self(), SCHED_OTHER, ¶m); | ||
14 | if (ret != 0) { | ||
15 | sway_log(SWAY_ERROR, "Failed to reset scheduler policy on fork"); | ||
16 | } | ||
17 | } | ||
18 | |||
19 | void set_rr_scheduling(void) { | ||
20 | int prio = sched_get_priority_min(SCHED_RR); | ||
21 | int old_policy; | ||
22 | int ret; | ||
23 | struct sched_param param; | ||
24 | |||
25 | ret = pthread_getschedparam(pthread_self(), &old_policy, ¶m); | ||
26 | if (ret != 0) { | ||
27 | sway_log(SWAY_DEBUG, "Failed to get old scheduling priority"); | ||
28 | return; | ||
29 | } | ||
30 | |||
31 | param.sched_priority = prio; | ||
32 | |||
33 | ret = pthread_setschedparam(pthread_self(), SCHED_RR, ¶m); | ||
34 | if (ret != 0) { | ||
35 | sway_log(SWAY_INFO, "Failed to set scheduling priority to %d", prio); | ||
36 | return; | ||
37 | } | ||
38 | |||
39 | pthread_atfork(NULL, NULL, child_fork_callback); | ||
40 | } | ||