sysdeps/pthread/tst-basic6.c

   1 /* Copyright (C) 2003-2024 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 <stdlib.h>
  21 #include <string.h>
  22 #include <unistd.h>
  23
  24
  25 static char *p;
  26
  27 static pthread_barrier_t b;
  28 #define BT \
  29   e = pthread_barrier_wait (&b);                                              \
  30   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)                           \
  31     {                                                                         \
  32       puts ("barrier_wait failed");                                           \
  33       exit (1);                                                               \
  34     }
  35
  36
  37 static void *
  38 tf (void *a)
  39 {
  40   int e;
  41
  42   BT;
  43
  44   char *p2 = getcwd (NULL, 0);
  45   if (p2 == NULL)
  46     {
  47       puts ("2nd getcwd failed");
  48       exit (1);
  49     }
  50
  51   if (strcmp (p, p2) != 0)
  52     {
  53       printf ("initial cwd mismatch: \"%s\" vs \"%s\"\n", p, p2);
  54       exit (1);
  55     }
  56
  57   free (p);
  58   free (p2);
  59
  60   if (chdir ("..") != 0)
  61     {
  62       puts ("chdir failed");
  63       exit (1);
  64     }
  65
  66   p = getcwd (NULL, 0);
  67   if (p == NULL)
  68     {
  69       puts ("getcwd failed");
  70       exit (1);
  71     }
  72
  73   return a;
  74 }
  75
  76
  77 int
  78 do_test (void)
  79 {
  80   if (pthread_barrier_init (&b, NULL, 2) != 0)
  81     {
  82       puts ("barrier_init failed");
  83       exit (1);
  84     }
  85
  86   pthread_t th;
  87   if (pthread_create (&th, NULL, tf, NULL) != 0)
  88     {
  89       puts ("create failed");
  90       exit (1);
  91     }
  92
  93   p = getcwd (NULL, 0);
  94   if (p == NULL)
  95     {
  96       puts ("getcwd failed");
  97       exit (1);
  98     }
  99
 100   int e;
 101   BT;
 102
 103   if (pthread_join (th, NULL) != 0)
 104     {
 105       puts ("join failed");
 106       exit (1);
 107     }
 108
 109   char *p2 = getcwd (NULL, 0);
 110   if (p2 == NULL)
 111     {
 112       puts ("2nd getcwd failed");
 113       exit (1);
 114     }
 115
 116   if (strcmp (p, p2) != 0)
 117     {
 118       printf ("cwd after chdir mismatch: \"%s\" vs \"%s\"\n", p, p2);
 119       exit (1);
 120     }
 121
 122   free (p);
 123   free (p2);
 124
 125   return 0;
 126 }
 127
 128
 129 #define TEST_FUNCTION do_test ()
 130 #include "../test-skeleton.c"