fix linux64 running flag

JuliaLang · Dec 13, 2021 · 42b89da · 42b89da
1 parent 4a01b3e
commit 42b89da
Showing 1 changed file with 9 additions and 3 deletions.
diff --git a/src/signals-unix.c b/src/signals-unix.c
@@ -517,17 +517,23 @@ JL_DLLEXPORT int jl_profile_start_timer(void)
     sigprof.sigev_notify = SIGEV_SIGNAL;
     sigprof.sigev_signo = SIGUSR1;
     sigprof.sigev_value.sival_ptr = &timerprof;
-    if (timer_create(CLOCK_REALTIME, &sigprof, &timerprof) == -1)
+    // Because SIGUSR1 is multipurpose, set `running` before so that we know that the first SIGUSR1 came from the timer
+    running = 1;
+    if (timer_create(CLOCK_REALTIME, &sigprof, &timerprof) == -1) {
+        running = 0;
         return -2;
+    }
 
     // Start the timer
     itsprof.it_interval.tv_sec = 0;
     itsprof.it_interval.tv_nsec = 0;
     itsprof.it_value.tv_sec = nsecprof / GIGA;
     itsprof.it_value.tv_nsec = nsecprof % GIGA;
-    if (timer_settime(timerprof, 0, &itsprof, NULL) == -1)
+
+    if (timer_settime(timerprof, 0, &itsprof, NULL) == -1) {
+        running = 0;
         return -3;
-    running = 1;
+    }
     return 0;
 }