nptl/test-condattr-printers.c

   1 /* Helper program for testing the pthread_cond_t and pthread_condattr_t
   2    pretty printers.
   3
   4    Copyright (C) 2016-2021 Free Software Foundation, Inc.
   5    This file is part of the GNU C Library.
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library; if not, see
  19    <https://www.gnu.org/licenses/>.  */
  20
  21 /* Keep the calls to the pthread_* functions on separate lines to make it easy
  22    to advance through the program using the gdb 'next' command.  */
  23
  24 #include <time.h>
  25 #include <pthread.h>
  26
  27 #define PASS 0
  28 #define FAIL 1
  29
  30 static int condvar_reinit (pthread_cond_t *condvar,
  31                            const pthread_condattr_t *attr);
  32 static int test_setclock (pthread_cond_t *condvar, pthread_condattr_t *attr);
  33 static int test_setpshared (pthread_cond_t *condvar, pthread_condattr_t *attr);
  34
  35 /* Need these so we don't have lines longer than 79 chars.  */
  36 #define SET_SHARED(attr, shared) pthread_condattr_setpshared (attr, shared)
  37
  38 int
  39 main (void)
  40 {
  41   pthread_cond_t condvar;
  42   pthread_condattr_t attr;
  43   int result = FAIL;
  44
  45   if (pthread_condattr_init (&attr) == 0
  46       && pthread_cond_init (&condvar, NULL) == 0
  47       && test_setclock (&condvar, &attr) == PASS
  48       && test_setpshared (&condvar, &attr) == PASS)
  49     result = PASS;
  50   /* Else, one of the pthread_cond* functions failed.  */
  51
  52   return result;
  53 }
  54
  55 /* Destroys CONDVAR and re-initializes it using ATTR.  */
  56 static int
  57 condvar_reinit (pthread_cond_t *condvar, const pthread_condattr_t *attr)
  58 {
  59   int result = FAIL;
  60
  61   if (pthread_cond_destroy (condvar) == 0
  62       && pthread_cond_init (condvar, attr) == 0)
  63     result = PASS;
  64
  65   return result;
  66 }
  67
  68 /* Tests setting the clock ID attribute.  */
  69 __attribute__ ((noinline))
  70 static int
  71 test_setclock (pthread_cond_t *condvar, pthread_condattr_t *attr)
  72 {
  73   int result = FAIL;
  74
  75   if (pthread_condattr_setclock (attr, CLOCK_REALTIME) == 0 /* Set clock.  */
  76       && condvar_reinit (condvar, attr) == PASS)
  77     result = PASS;
  78
  79   return result;
  80 }
  81
  82 /* Tests setting whether the condvar can be shared between processes.  */
  83 static int
  84 test_setpshared (pthread_cond_t *condvar, pthread_condattr_t *attr)
  85 {
  86   int result = FAIL;
  87
  88   if (SET_SHARED (attr, PTHREAD_PROCESS_SHARED) == 0 /* Set shared.  */
  89       && condvar_reinit (condvar, attr) == PASS
  90       && SET_SHARED (attr, PTHREAD_PROCESS_PRIVATE) == 0
  91       && condvar_reinit (condvar, attr) == PASS)
  92     result = PASS;
  93
  94   return result;
  95 }