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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/ext/rope/pthread7-rope.cc
1 // 2003-05-03 Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>
3 // Copyright (C) 2003-2023 Free Software Foundation, Inc.
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 3, or (at your option)
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.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
21 // { dg-options "-pthread" }
22 // { dg-require-effective-target pthread }
23 // { dg-timeout-factor 2 }
28 #include <testsuite_hooks.h>
30 const int max_thread_count
= 4;
31 const int max_loop_count
= 10000;
33 typedef __gnu_cxx::rope
<char, std::allocator
<char> > rope_type
;
37 void* thread_main(void *)
39 // To see a problem with gcc 3.3 and before, set a break point here.
40 // Single step through c_str implementation, call sched_yield after
41 // capture of NULL __old_c_string in any thread. Single step
42 // through another thread past that same point. Now, one thread
43 // will receive a bad pointer return. Adding dummy sched_yield
44 // should never change program semantics under POSIX threads.
45 const char* data4
= foo4
.c_str();
47 // Please note that the memory leak in the rope implementation with
48 // this test case, existed before and after fixing this bug...
49 VERIFY( !std::strcmp (data4
, "barbazbonglehellohellohello") );
56 pthread_t tid
[max_thread_count
];
58 #if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500
59 pthread_setconcurrency (max_thread_count
);
66 const char* data
= foo
.c_str();
67 VERIFY( !std::strcmp (data
, "barbazbongle") );
75 VERIFY( !std::strcmp (data2
, "bar2baz2bongle2") );
78 rope_type
foo3 ("hello");
79 const char* data3
= foo3
.c_str();
80 VERIFY( !std::strcmp (data3
, "hello") );
82 for (int j
= 0; j
< max_loop_count
; j
++)
89 for (int i
= 0; i
< max_thread_count
; i
++)
90 pthread_create (&tid
[i
], 0, thread_main
, 0);
92 for (int i
= 0; i
< max_thread_count
; i
++)
93 pthread_join (tid
[i
], 0);
96 VERIFY( !std::strcmp (data
, "barbazbongle") );
97 VERIFY( !std::strcmp (data2
, "bar2baz2bongle2") );