nptl/tst-sched1.c

   1 /* Copyright (C) 2003-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <pthread.h>
  19 #include <stdio.h>
  20 #include <unistd.h>
  21 #include <sys/types.h>
  22
  23
  24 static int global;
  25
  26 static void *
  27 tf (void *a)
  28 {
  29   global = 1;
  30
  31   return 0;
  32 }
  33
  34
  35 int
  36 do_test (void)
  37 {
  38   pthread_t th;
  39   pthread_attr_t at;
  40
  41   if (pthread_attr_init (&at) != 0)
  42     {
  43       puts ("attr_init failed");
  44       return 1;
  45     }
  46
  47   if (pthread_attr_setschedpolicy (&at, SCHED_OTHER) != 0)
  48     {
  49       puts ("attr_setschedpolicy failed");
  50       return 1;
  51     }
  52
  53   struct sched_param pa;
  54   if (sched_getparam (getpid (), &pa) != 0)
  55     {
  56       puts ("sched_getschedparam failed");
  57       return 1;
  58     }
  59
  60   if (pthread_attr_setschedparam (&at, &pa) != 0)
  61     {
  62       puts ("attr_setschedparam failed");
  63       return 1;
  64     }
  65
  66   if (pthread_attr_setinheritsched (&at, PTHREAD_EXPLICIT_SCHED) != 0)
  67     {
  68       puts ("attr_setinheritsched failed");
  69       return 1;
  70     }
  71
  72   if (pthread_create (&th, &at, tf, NULL) != 0)
  73     {
  74       puts ("create failed");
  75       return 1;
  76     }
  77
  78   int e = pthread_join (th, NULL);
  79   if (e != 0)
  80     {
  81       printf ("join failed: %d\n", e);
  82       return 1;
  83     }
  84
  85   if (global == 0)
  86     {
  87       puts ("thread didn't run");
  88       return 1;
  89     }
  90
  91   return 0;
  92 }
  93
  94
  95 #define TEST_FUNCTION do_test ()
  96 #include "../test-skeleton.c"