nptl/tst-cleanup4.c

   1 /* Copyright (C) 2003-2021 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 /* LinuxThreads pthread_cleanup_{push,pop} helpers.  */
  25 extern void _pthread_cleanup_push (struct _pthread_cleanup_buffer *__buffer,
  26                                    void (*__routine) (void *),
  27                                    void *__arg);
  28 compat_symbol_reference (libpthread, _pthread_cleanup_push,
  29                          _pthread_cleanup_push, GLIBC_2_0);
  30 extern void _pthread_cleanup_pop (struct _pthread_cleanup_buffer *__buffer,
  31                                   int __execute);
  32 compat_symbol_reference (libpthread, _pthread_cleanup_pop,
  33                          _pthread_cleanup_pop, GLIBC_2_0);
  34
  35 static int fds[2];
  36 static pthread_barrier_t b2;
  37 static int global;
  38
  39 /* Defined in tst-cleanup4aux.c, never compiled with -fexceptions.  */
  40 extern void fn5 (void);
  41 extern void fn7 (void);
  42 extern void fn9 (void);
  43
  44 void
  45 clh (void *arg)
  46 {
  47   int val = (long int) arg;
  48
  49   printf ("clh (%d)\n", val);
  50
  51   global *= val;
  52   global += val;
  53 }
  54
  55
  56 static __attribute__((noinline)) void
  57 fn_read (void)
  58 {
  59   int r = pthread_barrier_wait (&b2);
  60   if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
  61     {
  62       printf ("%s: barrier_wait failed\n", __FUNCTION__);
  63       exit (1);
  64     }
  65
  66   char c;
  67   read (fds[0], &c, 1);
  68 }
  69
  70
  71 __attribute__((noinline)) void
  72 fn0 (void)
  73 {
  74   pthread_cleanup_push (clh, (void *) 1l);
  75
  76   fn_read ();
  77
  78   pthread_cleanup_pop (1);
  79 }
  80
  81
  82 __attribute__((noinline)) void
  83 fn1 (void)
  84 {
  85   /* This is the old LinuxThreads pthread_cleanup_{push,pop}.  */
  86   struct _pthread_cleanup_buffer b;
  87   _pthread_cleanup_push (&b, clh, (void *) 2l);
  88
  89   fn0 ();
  90
  91   _pthread_cleanup_pop (&b, 1);
  92 }
  93
  94
  95 static __attribute__((noinline)) void
  96 fn2 (void)
  97 {
  98   pthread_cleanup_push (clh, (void *) 3l);
  99
 100   fn1 ();
 101
 102   pthread_cleanup_pop (1);
 103 }
 104
 105
 106 static void *
 107 tf (void *a)
 108 {
 109   switch ((long) a)
 110     {
 111     case 0:
 112       fn2 ();
 113       break;
 114     case 1:
 115       fn5 ();
 116       break;
 117     case 2:
 118       fn7 ();
 119       break;
 120     case 3:
 121       fn9 ();
 122       break;
 123     }
 124
 125   return NULL;
 126 }
 127
 128
 129 int
 130 do_test (void)
 131 {
 132   int result = 0;
 133
 134   if (pipe (fds) != 0)
 135     {
 136       puts ("pipe failed");
 137       exit (1);
 138     }
 139
 140   if (pthread_barrier_init (&b2, NULL, 2) != 0)
 141     {
 142       puts ("b2 init failed");
 143       exit (1);
 144     }
 145
 146   const int expect[] =
 147     {
 148       15,       /* 1 2 3 */
 149       276,      /* 1 4 5 6 */
 150       120,      /* 1 7 8 */
 151       460       /* 1 2 9 10 */
 152     };
 153
 154   long i;
 155   for (i = 0; i < 4; ++i)
 156     {
 157       global = 0;
 158
 159       printf ("test %ld\n", i);
 160
 161       pthread_t th;
 162       if (pthread_create (&th, NULL, tf, (void *) i) != 0)
 163         {
 164           puts ("create failed");
 165           exit (1);
 166         }
 167
 168       int e = pthread_barrier_wait (&b2);
 169       if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 170         {
 171           printf ("%s: barrier_wait failed\n", __FUNCTION__);
 172           exit (1);
 173         }
 174
 175       pthread_cancel (th);
 176
 177       void *r;
 178       if ((e = pthread_join (th, &r)) != 0)
 179         {
 180           printf ("join failed: %d\n", e);
 181           _exit (1);
 182         }
 183
 184       if (r != PTHREAD_CANCELED)
 185         {
 186           puts ("thread not canceled");
 187           exit (1);
 188         }
 189
 190       if (global != expect[i])
 191         {
 192           printf ("global = %d, expected %d\n", global, expect[i]);
 193           result = 1;
 194         }
 195     }
 196
 197   return result;
 198 }
 199
 200 #define TEST_FUNCTION do_test ()
 201 #include "../test-skeleton.c"