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1 | // 2002-01-23 Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org> |
2 | // | |
8a4680db | 3 | // Copyright (C) 2002, 2003 Free Software Foundation, Inc. |
ddd69607 LR |
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
19 | // USA. | |
20 | ||
515aab7c RO |
21 | // { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* } } |
22 | // { dg-options "-pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* } } | |
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23 | // { dg-options "-pthreads" { target *-*-solaris* } } |
24 | ||
25 | // This multi-threading C++/STL/POSIX code adheres to rules outlined here: | |
26 | // http://www.sgi.com/tech/stl/thread_safety.html | |
27 | // | |
28 | // It is believed to exercise the allocation code in a manner that | |
29 | // should reveal memory leaks (and, under rare cases, race conditions, | |
30 | // if the STL threading support is fubar'd). | |
31 | ||
32 | #include <list> | |
33 | ||
34 | // Do not include <pthread.h> explicitly; if threads are properly | |
35 | // configured for the port, then it is picked up free from STL headers. | |
36 | ||
37 | #if __GTHREADS | |
38 | using namespace std; | |
39 | ||
40 | const int thread_cycles = 10; | |
41 | const int thread_pairs = 10; | |
42 | const unsigned max_size = 100; | |
43 | const int iters = 10000; | |
44 | ||
45 | class task_queue | |
46 | { | |
47 | public: | |
48 | task_queue () | |
49 | { | |
50 | pthread_mutex_init (&fooLock, NULL); | |
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51 | pthread_cond_init (&fooCond1, NULL); |
52 | pthread_cond_init (&fooCond2, NULL); | |
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53 | } |
54 | ~task_queue () | |
55 | { | |
56 | pthread_mutex_destroy (&fooLock); | |
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57 | pthread_cond_destroy (&fooCond1); |
58 | pthread_cond_destroy (&fooCond2); | |
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59 | } |
60 | list<int> foo; | |
61 | pthread_mutex_t fooLock; | |
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62 | pthread_cond_t fooCond1; |
63 | pthread_cond_t fooCond2; | |
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64 | }; |
65 | ||
66 | void* | |
67 | produce (void* t) | |
68 | { | |
69 | task_queue& tq = *(static_cast<task_queue*> (t)); | |
70 | int num = 0; | |
71 | while (num < iters) | |
72 | { | |
73 | pthread_mutex_lock (&tq.fooLock); | |
74 | while (tq.foo.size () >= max_size) | |
63b3a44f | 75 | pthread_cond_wait (&tq.fooCond1, &tq.fooLock); |
ddd69607 | 76 | tq.foo.push_back (num++); |
63b3a44f | 77 | pthread_cond_signal (&tq.fooCond2); |
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78 | pthread_mutex_unlock (&tq.fooLock); |
79 | } | |
80 | return 0; | |
81 | } | |
82 | ||
83 | void* | |
84 | consume (void* t) | |
85 | { | |
86 | task_queue& tq = *(static_cast<task_queue*> (t)); | |
87 | int num = 0; | |
88 | while (num < iters) | |
89 | { | |
90 | pthread_mutex_lock (&tq.fooLock); | |
91 | while (tq.foo.size () == 0) | |
63b3a44f | 92 | pthread_cond_wait (&tq.fooCond2, &tq.fooLock); |
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93 | if (tq.foo.front () != num++) |
94 | abort (); | |
95 | tq.foo.pop_front (); | |
63b3a44f | 96 | pthread_cond_signal (&tq.fooCond1); |
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97 | pthread_mutex_unlock (&tq.fooLock); |
98 | } | |
99 | return 0; | |
100 | } | |
101 | ||
102 | int | |
11f10e6b | 103 | main () |
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104 | { |
105 | pthread_t prod[thread_pairs]; | |
106 | pthread_t cons[thread_pairs]; | |
107 | ||
108 | task_queue* tq[thread_pairs]; | |
109 | ||
110 | #if defined(__sun) && defined(__svr4__) | |
111 | pthread_setconcurrency (thread_pairs * 2); | |
112 | #endif | |
113 | ||
114 | for (int j = 0; j < thread_cycles; j++) | |
115 | { | |
116 | for (int i = 0; i < thread_pairs; i++) | |
117 | { | |
118 | tq[i] = new task_queue; | |
119 | pthread_create (&prod[i], NULL, produce, static_cast<void*> (tq[i])); | |
120 | pthread_create (&cons[i], NULL, consume, static_cast<void*> (tq[i])); | |
121 | } | |
122 | ||
123 | for (int i = 0; i < thread_pairs; i++) | |
124 | { | |
125 | pthread_join (prod[i], NULL); | |
126 | pthread_join (cons[i], NULL); | |
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127 | delete tq[i]; |
128 | } | |
129 | } | |
130 | ||
131 | return 0; | |
132 | } | |
133 | #else | |
134 | int main (void) {} | |
135 | #endif |