| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // Copyright (C) 2011 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 upgrade_lock; |
| |
| // void lock(); |
| |
| #include <boost/thread/lock_types.hpp> |
| #include <boost/thread/shared_mutex.hpp> |
| #include <boost/thread/thread.hpp> |
| #include <boost/detail/lightweight_test.hpp> |
| #include <iostream> |
| |
| boost::shared_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 |
| boost::upgrade_lock < boost::shared_mutex > lk(m, boost::defer_lock); |
| time_point t0 = Clock::now(); |
| lk.lock(); |
| time_point t1 = Clock::now(); |
| BOOST_TEST(lk.owns_lock() == true); |
| 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(2500000)+ms(1000)); // within 2.5ms |
| try |
| { |
| lk.lock(); |
| BOOST_TEST(false); |
| } |
| catch (boost::system::system_error& e) |
| { |
| BOOST_TEST(e.code().value() == boost::system::errc::resource_deadlock_would_occur); |
| } |
| lk.unlock(); |
| lk.release(); |
| try |
| { |
| lk.lock(); |
| BOOST_TEST(false); |
| } |
| catch (boost::system::system_error& e) |
| { |
| BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted); |
| } |
| #else |
| boost::upgrade_lock < boost::shared_mutex > lk(m, boost::defer_lock); |
| //time_point t0 = Clock::now(); |
| lk.lock(); |
| //time_point t1 = Clock::now(); |
| BOOST_TEST(lk.owns_lock() == true); |
| //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(2500000)+ms(1000)); // within 2.5ms |
| try |
| { |
| lk.lock(); |
| BOOST_TEST(false); |
| } |
| catch (boost::system::system_error& e) |
| { |
| BOOST_TEST(e.code().value() == boost::system::errc::resource_deadlock_would_occur); |
| } |
| lk.unlock(); |
| lk.release(); |
| try |
| { |
| lk.lock(); |
| BOOST_TEST(false); |
| } |
| catch (boost::system::system_error& e) |
| { |
| BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted); |
| } |
| #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(); |
| } |
| |