1// Copyright (C) 2010 Vicente Botet
2//
3// Distributed under the Boost Software License, Version 1.0. (See accompanying
4// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5
6#define BOOST_THREAD_VERSION 2
7//#define BOOST_THREAD_PROVIDES_GENERIC_SHARED_MUTEX_ON_WIN
8//#define BOOST_THREAD_USES_LOG
9
10#include <boost/thread/thread_only.hpp>
11#include <boost/thread/shared_mutex.hpp>
12#include <boost/detail/no_exceptions_support.hpp>
13//#include <boost/thread/detail/log.hpp>
14
15boost::shared_mutex mutex;
16
17void thread()
18{
19 //BOOST_THREAD_LOG << "<thrd" << BOOST_THREAD_END_LOG;
20 BOOST_TRY
21 {
22 for (int i =0; i<10; ++i)
23 {
24#ifndef BOOST_THREAD_USES_CHRONO
25 boost::system_time timeout = boost::get_system_time() + boost::posix_time::milliseconds(50);
26
27 if (mutex.timed_lock(timeout))
28 {
29 //BOOST_THREAD_LOG << "<thrd" << " i="<<i << BOOST_THREAD_END_LOG;
30 boost::this_thread::sleep(boost::posix_time::milliseconds(10));
31 mutex.unlock();
32 //BOOST_THREAD_LOG << "<thrd" << " i="<<i << BOOST_THREAD_END_LOG;
33 }
34#else
35 boost::chrono::system_clock::time_point timeout = boost::chrono::system_clock::now() + boost::chrono::milliseconds(50);
36
37 //BOOST_THREAD_LOG << "<thrd" << " i="<<i << BOOST_THREAD_END_LOG;
38 if (mutex.try_lock_until(abs_time: timeout))
39 {
40 //BOOST_THREAD_LOG << "<thrd" << " i="<<i << BOOST_THREAD_END_LOG;
41 boost::this_thread::sleep_for(d: boost::chrono::milliseconds(10));
42 mutex.unlock();
43 //BOOST_THREAD_LOG << "<thrd" << " i="<<i << BOOST_THREAD_END_LOG;
44 }
45#endif
46 }
47 }
48 BOOST_CATCH (boost::lock_error& )
49 {
50 //BOOST_THREAD_LOG << "lock_error exception thrd>" << BOOST_THREAD_END_LOG;
51 }
52 BOOST_CATCH (...)
53 {
54 //BOOST_THREAD_LOG << "exception thrd>" << BOOST_THREAD_END_LOG;
55 }
56 BOOST_CATCH_END
57 //BOOST_THREAD_LOG << "thrd>" << BOOST_THREAD_END_LOG;
58}
59
60int main()
61{
62 //BOOST_THREAD_LOG << "<main" << BOOST_THREAD_END_LOG;
63 const int nrThreads = 20;
64 boost::thread* threads[nrThreads];
65
66 for (int i = 0; i < nrThreads; ++i)
67 threads[i] = new boost::thread(&thread);
68
69 for (int i = 0; i < nrThreads; ++i)
70 {
71 threads[i]->join();
72 //BOOST_THREAD_LOG << "main" << BOOST_THREAD_END_LOG;
73 delete threads[i];
74 //BOOST_THREAD_LOG << "main" << BOOST_THREAD_END_LOG;
75 }
76 //BOOST_THREAD_LOG << "main>" << BOOST_THREAD_END_LOG;
77 return 0;
78}
79

source code of boost/libs/thread/test/test_4882.cpp