1// 2003-05-03  Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>
2//
3// Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 2, or (at your option)
9// any later version.
10//
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15//
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* } }
22// { dg-options "-pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* } }
23// { dg-options "-pthreads" { target *-*-solaris* } }
24
25#include <ext/rope>
26#include <cstring>
27#include <testsuite_hooks.h>
28
29// Do not include <pthread.h> explicitly; if threads are properly
30// configured for the port, then it is picked up free from STL headers.
31
32const int max_thread_count = 4;
33const int max_loop_count = 10000;
34
35typedef __gnu_cxx::rope<char, std::allocator<char> > rope_type;
36rope_type foo2;
37rope_type foo4;
38
39void* thread_main(void *)
40{
41  // To see a problem with gcc 3.3 and before, set a break point here.
42  // Single step through c_str implementation, call sched_yield after
43  // capture of NULL __old_c_string in any thread.  Single step
44  // through another thread past that same point.  Now, one thread
45  // will receive a bad pointer return.  Adding dummy sched_yield
46  // should never change program semantics under POSIX threads.
47  const char* data4 = foo4.c_str();
48
49  // Please note that the memory leak in the rope implementation with
50  // this test case, existed before and after fixing this bug...
51  bool test __attribute__((unused)) = true;
52  VERIFY( !std::strcmp (data4, "barbazbonglehellohellohello") );
53  return 0;
54}
55
56int
57main()
58{
59  bool test __attribute__((unused)) = true;
60
61  pthread_t tid[max_thread_count];
62
63#if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500
64  pthread_setconcurrency (max_thread_count);
65#endif
66
67  rope_type foo;
68  foo += "bar";
69  foo += "baz";
70  foo += "bongle";
71  const char* data = foo.c_str();
72  VERIFY( !std::strcmp (data, "barbazbongle") );
73
74  const char* data2;
75  {
76    foo2 += "bar2";
77    foo2 += "baz2";
78    foo2 += "bongle2";
79    data2 = foo2.c_str();
80    VERIFY( !std::strcmp (data2, "bar2baz2bongle2") );
81  }
82
83  rope_type foo3 ("hello");
84  const char* data3 = foo3.c_str();
85  VERIFY( !std::strcmp (data3, "hello") );
86
87  for (int j = 0; j < max_loop_count; j++)
88    {
89      foo4 = foo;
90      foo4 += foo3;
91      foo4 += foo3;
92      foo4 += foo3;
93
94      for (int i = 0; i < max_thread_count; i++)
95	pthread_create (&tid[i], NULL, thread_main, 0);
96
97      for (int i = 0; i < max_thread_count; i++)
98	pthread_join (tid[i], NULL);
99    }
100
101  VERIFY( !std::strcmp (data, "barbazbongle") );
102  VERIFY( !std::strcmp (data2, "bar2baz2bongle2") );
103
104  return 0;
105}
106