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         FILE *serial = NULL;
  21         FDSet *fdset = NULL;
  22         int r;
  23
  24         r = enter_cgroup_subroot();
  25         if (r == -ENOMEDIUM) {
  26                 log_notice_errno(r, "Skipping test: cgroupfs not available");
  27                 return EXIT_TEST_SKIP;
  28         }
  29
  30         /* prepare the test */
  31         assert_se(set_unit_path(get_testdata_dir("")) >= 0);
  32         assert_se(runtime_dir = setup_fake_runtime_dir());
  33         r = manager_new(UNIT_FILE_USER, MANAGER_TEST_RUN_BASIC, &m);
  34         if (MANAGER_SKIP_TEST(r)) {
  35                 log_notice_errno(r, "Skipping test: manager_new: %m");
  36                 return EXIT_TEST_SKIP;
  37         }
  38         assert_se(r >= 0);
  39         assert_se(manager_startup(m, serial, fdset) >= 0);
  40
  41         /* load idle ok */
  42         assert_se(manager_load_startable_unit_or_warn(m, "sched_idle_ok.service", NULL, &idle_ok) >= 0);
  43         ser = SERVICE(idle_ok);
  44         assert_se(ser->exec_context.cpu_sched_policy == SCHED_OTHER);
  45         assert_se(ser->exec_context.cpu_sched_priority == 0);
  46
  47         /*
  48          * load idle bad. This should print a warning but we have no way to look at it.
  49          */
  50         assert_se(manager_load_startable_unit_or_warn(m, "sched_idle_bad.service", NULL, &idle_bad) >= 0);
  51         ser = SERVICE(idle_ok);
  52         assert_se(ser->exec_context.cpu_sched_policy == SCHED_OTHER);
  53         assert_se(ser->exec_context.cpu_sched_priority == 0);
  54
  55         /*
  56          * load rr ok.
  57          * Test that the default priority is moving from 0 to 1.
  58          */
  59         assert_se(manager_load_startable_unit_or_warn(m, "sched_rr_ok.service", NULL, &rr_ok) >= 0);
  60         ser = SERVICE(rr_ok);
  61         assert_se(ser->exec_context.cpu_sched_policy == SCHED_RR);
  62         assert_se(ser->exec_context.cpu_sched_priority == 1);
  63
  64         /*
  65          * load rr bad.
  66          * Test that the value of 0 and 100 is ignored.
  67          */
  68         assert_se(manager_load_startable_unit_or_warn(m, "sched_rr_bad.service", NULL, &rr_bad) >= 0);
  69         ser = SERVICE(rr_bad);
  70         assert_se(ser->exec_context.cpu_sched_policy == SCHED_RR);
  71         assert_se(ser->exec_context.cpu_sched_priority == 1);
  72
  73         /*
  74          * load rr change.
  75          * Test that anything between 1 and 99 can be set.
  76          */
  77         assert_se(manager_load_startable_unit_or_warn(m, "sched_rr_change.service", NULL, &rr_sched) >= 0);
  78         ser = SERVICE(rr_sched);
  79         assert_se(ser->exec_context.cpu_sched_policy == SCHED_RR);
  80         assert_se(ser->exec_context.cpu_sched_priority == 99);
  81
  82         return EXIT_SUCCESS;
  83 }