nptl/tst-cleanup4.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 <shlib-compat.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <unistd.h>
  23
  24 #include <support/xunistd.h>
  25
  26 /* LinuxThreads pthread_cleanup_{push,pop} helpers.  */
  27 extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *__buffer,
  28                                    void (*__routine) (void *),
  29                                    void *__arg);
  30 compat_symbol_reference (libpthread, _pthread_cleanup_push,
  31                          _pthread_cleanup_push, GLIBC_2_0);
  32 extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *__buffer,
  33                                   int __execute);
  34 compat_symbol_reference (libpthread, _pthread_cleanup_pop,
  35                          _pthread_cleanup_pop, GLIBC_2_0);
  36
  37 static int fds[2];
  38 static pthread_barrier_t b2;
  39 static int global;
  40
  41 /* Defined in tst-cleanup4aux.c, never compiled with -fexceptions.  */
  42 extern void fn5 (void);
  43 extern void fn7 (void);
  44 extern void fn9 (void);
  45
  46 void
  47 clh (void *arg)
  48 {
  49   int val = (long int) arg;
  50
  51   printf ("clh (%d)\n", val);
  52
  53   global *= val;
  54   global += val;
  55 }
  56
  57
  58 static __attribute__((noinline)) void
  59 fn_read (void)
  60 {
  61   int r = pthread_barrier_wait (&b2);
  62   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  63     {
  64       printf ("%s: barrier_wait failed\n", __FUNCTION__);
  65       exit (1);
  66     }
  67
  68   char c;
  69   xread (fds[0], &c, 1);
  70 }
  71
  72
  73 __attribute__((noinline)) void
  74 fn0 (void)
  75 {
  76   pthread_cleanup_push (clh, (void *) 1l);
  77
  78   fn_read ();
  79
  80   pthread_cleanup_pop (1);
  81 }
  82
  83
  84 __attribute__((noinline)) void
  85 fn1 (void)
  86 {
  87   /* This is the old LinuxThreads pthread_cleanup_{push,pop}.  */
  88   struct _pthread_cleanup_buffer b;
  89   _pthread_cleanup_push (&b, clh, (void *) 2l);
  90
  91   fn0 ();
  92
  93   _pthread_cleanup_pop (&b, 1);
  94 }
  95
  96
  97 static __attribute__((noinline)) void
  98 fn2 (void)
  99 {
 100   pthread_cleanup_push (clh, (void *) 3l);
 101
 102   fn1 ();
 103
 104   pthread_cleanup_pop (1);
 105 }
 106
 107
 108 static void *
 109 tf (void *a)
 110 {
 111   switch ((long) a)
 112     {
 113     case 0:
 114       fn2 ();
 115       break;
 116     case 1:
 117       fn5 ();
 118       break;
 119     case 2:
 120       fn7 ();
 121       break;
 122     case 3:
 123       fn9 ();
 124       break;
 125     }
 126
 127   return NULL;
 128 }
 129
 130
 131 int
 132 do_test (void)
 133 {
 134   int result = 0;
 135
 136   if (pipe (fds) != 0)
 137     {
 138       puts ("pipe failed");
 139       exit (1);
 140     }
 141
 142   if (pthread_barrier_init (&b2, NULL, 2) != 0)
 143     {
 144       puts ("b2 init failed");
 145       exit (1);
 146     }
 147
 148   const int expect[] =
 149     {
 150       15,       /* 1 2 3 */
 151       276,      /* 1 4 5 6 */
 152       120,      /* 1 7 8 */
 153       460       /* 1 2 9 10 */
 154     };
 155
 156   long i;
 157   for (i = 0; i < 4; ++i)
 158     {
 159       global = 0;
 160
 161       printf ("test %ld\n", i);
 162
 163       pthread_t th;
 164       if (pthread_create (&th, NULL, tf, (void *) i) != 0)
 165         {
 166           puts ("create failed");
 167           exit (1);
 168         }
 169
 170       int e = pthread_barrier_wait (&b2);
 171       if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 172         {
 173           printf ("%s: barrier_wait failed\n", __FUNCTION__);
 174           exit (1);
 175         }
 176
 177       pthread_cancel (th);
 178
 179       void *r;
 180       if ((e = pthread_join (th, &r)) != 0)
 181         {
 182           printf ("join failed: %d\n", e);
 183           _exit (1);
 184         }
 185
 186       if (r != PTHREAD_CANCELED)
 187         {
 188           puts ("thread not canceled");
 189           exit (1);
 190         }
 191
 192       if (global != expect[i])
 193         {
 194           printf ("global = %d, expected %d\n", global, expect[i]);
 195           result = 1;
 196         }
 197     }
 198
 199   return result;
 200 }
 201
 202 #define TEST_FUNCTION do_test ()
 203 #include "../test-skeleton.c"