old-autovect-branch/libstdc++-v3/testsuite/27_io/basic_filebuf/showmanyc/char/9533-1.cc

   1 // { dg-require-fork "" }
   2 // { dg-require-mkfifo "" }
   3
   4 // Copyright (C) 2003 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This 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
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // 27.8.1.4 Overridden virtual functions
  23
  24 #include <unistd.h>
  25 #include <signal.h>
  26 #include <fcntl.h>
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29 #include <fstream>
  30 #include <testsuite_hooks.h>
  31
  32 // libstdc++/9533
  33 void test_01()
  34 {
  35   using namespace std;
  36   using namespace __gnu_test;
  37   bool test __attribute__((unused)) = true;
  38   const char* name = "tmp_fifo1";
  39
  40   const int count = 10000;
  41
  42   signal(SIGPIPE, SIG_IGN);
  43   unlink(name);
  44
  45   if (0 != mkfifo(name, S_IRWXU))
  46     {
  47       VERIFY( false );
  48     }
  49
  50   int fval = fork();
  51   if (fval == -1)
  52     {
  53       unlink(name);
  54       VERIFY( false );
  55     }
  56   else if (fval == 0)
  57     {
  58       filebuf ofbuf;
  59       ofbuf.open(name, ios_base::in|ios_base::out);
  60       VERIFY( ofbuf.is_open() );
  61       sleep(1);
  62
  63       for (int i = 0; i < count; ++i)
  64         ofbuf.sputc(i % 100);
  65
  66       ofbuf.pubsync();
  67       sleep(1);
  68       ofbuf.close();
  69       exit(0);
  70     }
  71
  72   filebuf ifbuf;
  73   ifbuf.open(name, ios_base::in);
  74   VERIFY( ifbuf.is_open() );
  75
  76   for (int j = 0; j < count; ++j)
  77     {
  78       filebuf::int_type c1 = ifbuf.sbumpc();
  79       VERIFY( c1 == j % 100 );
  80     }
  81
  82   filebuf::int_type c6 = ifbuf.sbumpc();
  83   VERIFY( c6 == filebuf::traits_type::eof() );
  84
  85   sleep(2);
  86   ifbuf.close();
  87
  88   unlink(name);
  89 }
  90
  91 int
  92 main()
  93 {
  94   test_01();
  95   return 0;
  96 }
  97