sysdeps/pthread/tst-tss-basic.c

   1 /* C11 threads specific storage tests.
   2    Copyright (C) 2018-2020 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <threads.h>
  20 #include <stdio.h>
  21 #include <unistd.h>
  22
  23 #include <support/check.h>
  24
  25 /* Thread specific storage.  */
  26 static tss_t key;
  27
  28 #define TSS_VALUE (void*) 0xFF
  29
  30 static int
  31 tss_thrd (void *arg)
  32 {
  33   if (tss_create (&key, NULL) != thrd_success)
  34     FAIL_EXIT1 ("tss_create failed");
  35
  36   if (tss_set (key, TSS_VALUE))
  37     FAIL_EXIT1 ("tss_set failed");
  38
  39   void *value = tss_get (key);
  40   if (value == 0)
  41     FAIL_EXIT1 ("tss_get failed");
  42   if (value != TSS_VALUE)
  43     FAIL_EXIT1 ("tss_get returned %p, expected %p", value, TSS_VALUE);
  44
  45   thrd_exit (thrd_success);
  46 }
  47
  48 static int
  49 do_test (void)
  50 {
  51   /* Setting an invalid key should return an error.  */
  52   if (tss_set (key, TSS_VALUE) == thrd_success)
  53     FAIL_EXIT1 ("tss_set succeed where it should have failed");
  54
  55   if (tss_create (&key, NULL) != thrd_success)
  56     FAIL_EXIT1 ("tss_create failed");
  57
  58   thrd_t id;
  59   if (thrd_create (&id, tss_thrd, NULL) != thrd_success)
  60     FAIL_EXIT1 ("thrd_create failed");
  61
  62   if (thrd_join (id, NULL) != thrd_success)
  63     FAIL_EXIT1 ("thrd failed");
  64
  65   /* The value set in tss_thrd should not be visible here.  */
  66   void *value = tss_get (key);
  67   if (value != 0)
  68     FAIL_EXIT1 ("tss_get succeed where it should have failed");
  69
  70   tss_delete (key);
  71
  72   return 0;
  73 }
  74
  75 #include <support/test-driver.c>