From cb08cf4735f9fa4c42af66e16fbb6bb512df59a3 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 4 Jun 2009 02:05:47 +0200
Subject: properly set RLIMIT_RTTIME

---
 rtkit-test.c | 104 ++++++++++++++++++++++++++++++++---------------------------
 1 file changed, 57 insertions(+), 47 deletions(-)

(limited to 'rtkit-test.c')

diff --git a/rtkit-test.c b/rtkit-test.c
index 59244f8..25ef419 100644
--- a/rtkit-test.c
+++ b/rtkit-test.c
@@ -13,72 +13,82 @@
 #define SCHED_RESET_ON_FORK 0x40000000
 #endif
 
+#ifndef RLIMIT_RTTIME
+#define RLIMIT_RTTIME 15
+#endif
+
 static void print_status(const char *t) {
-    int ret;
+        int ret;
 
-    if ((ret = sched_getscheduler(0)) < 0) {
-        fprintf(stderr, "sched_getscheduler() failed: %s\n", strerror(errno));
-        return;
-    }
+        if ((ret = sched_getscheduler(0)) < 0) {
+                fprintf(stderr, "sched_getscheduler() failed: %s\n", strerror(errno));
+                return;
+        }
 
-    printf("%s:\n"
-           "\tSCHED_RESET_ON_FORK: %s\n",
-           t,
-           (ret & SCHED_RESET_ON_FORK) ? "yes" : "no");
+        printf("%s:\n"
+               "\tSCHED_RESET_ON_FORK: %s\n",
+               t,
+               (ret & SCHED_RESET_ON_FORK) ? "yes" : "no");
 
-    if ((ret & ~SCHED_RESET_ON_FORK) == SCHED_RR) {
-        struct sched_param param;
+        if ((ret & ~SCHED_RESET_ON_FORK) == SCHED_RR) {
+                struct sched_param param;
 
-        if (sched_getparam(0, &param) < 0) {
-            fprintf(stderr, "sched_getschedparam() failed: %s\n", strerror(errno));
-            return;
-        }
+                if (sched_getparam(0, &param) < 0) {
+                        fprintf(stderr, "sched_getschedparam() failed: %s\n", strerror(errno));
+                        return;
+                }
 
-        printf("\tSCHED_RR with priority %i\n", param.sched_priority);
+                printf("\tSCHED_RR with priority %i\n", param.sched_priority);
 
-    } else if ((ret & ~SCHED_RESET_ON_FORK) == SCHED_OTHER) {
-        errno = 0;
-        ret = getpriority(PRIO_PROCESS, 0);
-        if (errno != 0) {
-            fprintf(stderr, "getpriority() failed: %s\n", strerror(errno));
-            return;
-        }
+        } else if ((ret & ~SCHED_RESET_ON_FORK) == SCHED_OTHER) {
+                errno = 0;
+                ret = getpriority(PRIO_PROCESS, 0);
+                if (errno != 0) {
+                        fprintf(stderr, "getpriority() failed: %s\n", strerror(errno));
+                        return;
+                }
 
-        printf("\tSCHED_OTHER with nice level: %i\n", ret);
+                printf("\tSCHED_OTHER with nice level: %i\n", ret);
 
-    } else
-        fprintf(stderr, "Neither SCHED_RR nor SCHED_OTHER.\n");
+        } else
+                fprintf(stderr, "Neither SCHED_RR nor SCHED_OTHER.\n");
 }
 
 int main(int argc, char *argv[]) {
-    DBusError error;
-    DBusConnection *bus;
-    int r;
+        DBusError error;
+        DBusConnection *bus;
+        int r;
+        struct rlimit rlim;
+
+        dbus_error_init(&error);
 
-    dbus_error_init(&error);
+        if (!(bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error))) {
+                fprintf(stderr, "Failed to connect to system bus: %s\n", error.message);
+                return 1;
+        }
 
-    if (!(bus = dbus_bus_get(DBUS_BUS_SYSTEM, &error))) {
-        fprintf(stderr, "Failed to connect to system bus: %s\n", error.message);
-        return 1;
-    }
+        memset(&rlim, 0, sizeof(rlim));
+        rlim.rlim_cur = rlim.rlim_max = 100000000ULL; /* 100ms */
+        if ((setrlimit(RLIMIT_RTTIME, &rlim) < 0))
+                fprintf(stderr, "Failed to set RLIMIT_RTTIME: %s\n", strerror(errno));
 
-    print_status("before");
+        print_status("before");
 
-    if ((r = rtkit_make_high_priority(bus, 0, -10)) < 0)
-        fprintf(stderr, "Failed to become high priority: %s\n", strerror(-r));
-    else
-        printf("Sucessfully became high priority.\n");
+        if ((r = rtkit_make_high_priority(bus, 0, -10)) < 0)
+                fprintf(stderr, "Failed to become high priority: %s\n", strerror(-r));
+        else
+                printf("Sucessfully became high priority.\n");
 
-    print_status("after high priority");
+        print_status("after high priority");
 
-    if ((r = rtkit_make_realtime(bus, 0, 10)) < 0)
-        fprintf(stderr, "Failed to become realtime: %s\n", strerror(-r));
-    else
-        printf("Sucessfully became realtime.\n");
+        if ((r = rtkit_make_realtime(bus, 0, 10)) < 0)
+                fprintf(stderr, "Failed to become realtime: %s\n", strerror(-r));
+        else
+                printf("Sucessfully became realtime.\n");
 
-    print_status("after realtime");
+        print_status("after realtime");
 
-    dbus_connection_unref(bus);
+        dbus_connection_unref(bus);
 
-    return 0;
+        return 0;
 }
-- 
cgit