| // Copyright (C) 2012 Vicente J. Botet Escriba |
| // |
| // Distributed under the Boost Software License, Version 1.0. (See accompanying |
| // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| |
| // <boost/thread/locks.hpp> |
| |
| // template <class Mutex> class unique_lock; |
| // unique_lock<Mutex> make_unique_lock(Mutex&, try_to_lock_t); |
| |
| #define BOOST_THREAD_VERSION 4 |
| |
| |
| #include <boost/thread/lock_factories.hpp> |
| #include <boost/thread/mutex.hpp> |
| #include <boost/thread/thread.hpp> |
| #include <boost/detail/lightweight_test.hpp> |
| |
| boost::mutex m; |
| |
| #if defined BOOST_THREAD_USES_CHRONO |
| typedef boost::chrono::system_clock Clock; |
| typedef Clock::time_point time_point; |
| typedef Clock::duration duration; |
| typedef boost::chrono::milliseconds ms; |
| typedef boost::chrono::nanoseconds ns; |
| #else |
| #endif |
| |
| void f() |
| { |
| #if defined BOOST_THREAD_USES_CHRONO |
| { |
| time_point t0 = Clock::now(); |
| #if ! defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) |
| auto |
| #else |
| boost::unique_lock<boost::mutex> |
| #endif |
| lk = boost::make_unique_lock(m, boost::try_to_lock); |
| BOOST_TEST(lk.owns_lock() == false); |
| time_point t1 = Clock::now(); |
| ns d = t1 - t0 - ms(250); |
| // This test is spurious as it depends on the time the thread system switches the threads |
| BOOST_TEST(d < ns(50000000)+ms(1000)); // within 50ms |
| } |
| { |
| time_point t0 = Clock::now(); |
| #if ! defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) |
| auto |
| #else |
| boost::unique_lock<boost::mutex> |
| #endif |
| lk = boost::make_unique_lock(m, boost::try_to_lock); |
| BOOST_TEST(lk.owns_lock() == false); |
| time_point t1 = Clock::now(); |
| ns d = t1 - t0 - ms(250); |
| // This test is spurious as it depends on the time the thread system switches the threads |
| BOOST_TEST(d < ns(50000000)+ms(1000)); // within 50ms |
| } |
| { |
| time_point t0 = Clock::now(); |
| #if ! defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) |
| auto |
| #else |
| boost::unique_lock<boost::mutex> |
| #endif |
| lk = boost::make_unique_lock(m, boost::try_to_lock); |
| BOOST_TEST(lk.owns_lock() == false); |
| time_point t1 = Clock::now(); |
| ns d = t1 - t0 - ms(250); |
| // This test is spurious as it depends on the time the thread system switches the threads |
| BOOST_TEST(d < ns(50000000)+ms(1000)); // within 50ms |
| } |
| { |
| time_point t0 = Clock::now(); |
| while (true) |
| { |
| #if ! defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) |
| auto |
| #else |
| boost::unique_lock<boost::mutex> |
| #endif |
| lk = boost::make_unique_lock(m, boost::try_to_lock); |
| if (lk.owns_lock()) break; |
| } |
| time_point t1 = Clock::now(); |
| ns d = t1 - t0 - ms(250); |
| // This test is spurious as it depends on the time the thread system switches the threads |
| BOOST_TEST(d < ns(50000000)+ms(1000)); // within 50ms |
| } |
| #else |
| // time_point t0 = Clock::now(); |
| // { |
| // boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock); |
| // BOOST_TEST(lk.owns_lock() == false); |
| // } |
| // { |
| // boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock); |
| // BOOST_TEST(lk.owns_lock() == false); |
| // } |
| // { |
| // boost::unique_lock<boost::mutex> lk(m, boost::try_to_lock); |
| // BOOST_TEST(lk.owns_lock() == false); |
| // } |
| while (true) |
| { |
| #if ! defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) |
| auto |
| #else |
| boost::unique_lock<boost::mutex> |
| #endif |
| lk = boost::make_unique_lock(m, boost::try_to_lock); |
| if (lk.owns_lock()) break; |
| } |
| //time_point t1 = Clock::now(); |
| //ns d = t1 - t0 - ms(250); |
| // This test is spurious as it depends on the time the thread system switches the threads |
| //BOOST_TEST(d < ns(50000000)+ms(1000)); // within 50ms |
| #endif |
| } |
| |
| int main() |
| { |
| m.lock(); |
| boost::thread t(f); |
| #if defined BOOST_THREAD_USES_CHRONO |
| boost::this_thread::sleep_for(ms(250)); |
| #else |
| #endif |
| m.unlock(); |
| t.join(); |
| |
| return boost::report_errors(); |
| } |