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         test_setup_logging(LOG_INFO);
  23
  24         r = enter_cgroup_subroot();
  25         if (r == -ENOMEDIUM)
  26                 return log_tests_skipped("cgroupfs not available");
  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                 return log_tests_skipped_errno(r, "manager_new");
  34         assert_se(r >= 0);
  35         assert_se(manager_startup(m, NULL, NULL) >= 0);
  36
  37         /* load idle ok */
  38         assert_se(manager_load_startable_unit_or_warn(m, "sched_idle_ok.service", NULL, &idle_ok) >= 0);
  39         ser = SERVICE(idle_ok);
  40         assert_se(ser->exec_context.cpu_sched_policy == SCHED_OTHER);
  41         assert_se(ser->exec_context.cpu_sched_priority == 0);
  42
  43         /*
  44          * load idle bad. This should print a warning but we have no way to look at it.
  45          */
  46         assert_se(manager_load_startable_unit_or_warn(m, "sched_idle_bad.service", NULL, &idle_bad) >= 0);
  47         ser = SERVICE(idle_ok);
  48         assert_se(ser->exec_context.cpu_sched_policy == SCHED_OTHER);
  49         assert_se(ser->exec_context.cpu_sched_priority == 0);
  50
  51         /*
  52          * load rr ok.
  53          * Test that the default priority is moving from 0 to 1.
  54          */
  55         assert_se(manager_load_startable_unit_or_warn(m, "sched_rr_ok.service", NULL, &rr_ok) >= 0);
  56         ser = SERVICE(rr_ok);
  57         assert_se(ser->exec_context.cpu_sched_policy == SCHED_RR);
  58         assert_se(ser->exec_context.cpu_sched_priority == 1);
  59
  60         /*
  61          * load rr bad.
  62          * Test that the value of 0 and 100 is ignored.
  63          */
  64         assert_se(manager_load_startable_unit_or_warn(m, "sched_rr_bad.service", NULL, &rr_bad) >= 0);
  65         ser = SERVICE(rr_bad);
  66         assert_se(ser->exec_context.cpu_sched_policy == SCHED_RR);
  67         assert_se(ser->exec_context.cpu_sched_priority == 1);
  68
  69         /*
  70          * load rr change.
  71          * Test that anything between 1 and 99 can be set.
  72          */
  73         assert_se(manager_load_startable_unit_or_warn(m, "sched_rr_change.service", NULL, &rr_sched) >= 0);
  74         ser = SERVICE(rr_sched);
  75         assert_se(ser->exec_context.cpu_sched_policy == SCHED_RR);
  76         assert_se(ser->exec_context.cpu_sched_priority == 99);
  77
  78         return EXIT_SUCCESS;
  79 }