src/test/test-sched-prio.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright © 2012 Holger Hans Peter Freyther
   4 ***/
   5
   6 #include <sched.h>
   7
   8 #include "all-units.h"
   9 #include "macro.h"
  10 #include "manager.h"
  11 #include "rm-rf.h"
  12 #include "test-helper.h"
  13 #include "tests.h"
  14
  15 int main(int argc, char *argv[]) {
  16         _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL;
  17         _cleanup_(manager_freep) Manager *m = NULL;
  18         Unit *idle_ok, *idle_bad, *rr_ok, *rr_bad, *rr_sched;
  19         Service *ser;
  20         int r;
  21
  22         r = enter_cgroup_subroot();
  23         if (r == -ENOMEDIUM) {
  24                 log_notice_errno(r, "Skipping test: cgroupfs not available");
  25                 return EXIT_TEST_SKIP;
  26         }
  27
  28         /* prepare the test */
  29         assert_se(set_unit_path(get_testdata_dir("")) >= 0);
  30         assert_se(runtime_dir = setup_fake_runtime_dir());
  31         r = manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_BASIC, &m);
  32         if (MANAGER_SKIP_TEST(r)) {
  33                 log_notice_errno(r, "Skipping test: manager_new: %m");
  34                 return EXIT_TEST_SKIP;
  35         }
  36         assert_se(r >= 0);
  37         assert_se(manager_startup(m, NULL, NULL) >= 0);
  38
  39         /* load idle ok */
  40         assert_se(manager_load_startable_unit_or_warn(m, "sched_idle_ok.service", NULL, &idle_ok) >= 0);
  41         ser = SERVICE(idle_ok);
  42         assert_se(ser->exec_context.cpu_sched_policy == SCHED_OTHER);
  43         assert_se(ser->exec_context.cpu_sched_priority == 0);
  44
  45         /*
  46          * load idle bad. This should print a warning but we have no way to look at it.
  47          */
  48         assert_se(manager_load_startable_unit_or_warn(m, "sched_idle_bad.service", NULL, &idle_bad) >= 0);
  49         ser = SERVICE(idle_ok);
  50         assert_se(ser->exec_context.cpu_sched_policy == SCHED_OTHER);
  51         assert_se(ser->exec_context.cpu_sched_priority == 0);
  52
  53         /*
  54          * load rr ok.
  55          * Test that the default priority is moving from 0 to 1.
  56          */
  57         assert_se(manager_load_startable_unit_or_warn(m, "sched_rr_ok.service", NULL, &rr_ok) >= 0);
  58         ser = SERVICE(rr_ok);
  59         assert_se(ser->exec_context.cpu_sched_policy == SCHED_RR);
  60         assert_se(ser->exec_context.cpu_sched_priority == 1);
  61
  62         /*
  63          * load rr bad.
  64          * Test that the value of 0 and 100 is ignored.
  65          */
  66         assert_se(manager_load_startable_unit_or_warn(m, "sched_rr_bad.service", NULL, &rr_bad) >= 0);
  67         ser = SERVICE(rr_bad);
  68         assert_se(ser->exec_context.cpu_sched_policy == SCHED_RR);
  69         assert_se(ser->exec_context.cpu_sched_priority == 1);
  70
  71         /*
  72          * load rr change.
  73          * Test that anything between 1 and 99 can be set.
  74          */
  75         assert_se(manager_load_startable_unit_or_warn(m, "sched_rr_change.service", NULL, &rr_sched) >= 0);
  76         ser = SERVICE(rr_sched);
  77         assert_se(ser->exec_context.cpu_sched_policy == SCHED_RR);
  78         assert_se(ser->exec_context.cpu_sched_priority == 99);
  79
  80         return EXIT_SUCCESS;
  81 }