1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // Copyright (C) 2011 Vicente J. Botet Escriba 11 // 12 // Distributed under the Boost Software License, Version 1.0. (See accompanying 13 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 14 15 // <boost/thread/locks.hpp> 16 17 // template <class Mutex> class shared_lock; 18 19 // template <class Rep, class Period> 20 // bool try_lock_for(const chrono::duration<Rep, Period>& rel_time); 21 22 #include <boost/thread/lock_types.hpp> 23 //#include <boost/thread/shared_mutex.hpp> 24 #include <boost/detail/lightweight_test.hpp> 25 26 bool try_lock_called = false; 27 28 struct shared_mutex 29 { try_lock_sharedshared_mutex30 bool try_lock_shared() 31 { 32 try_lock_called = !try_lock_called; 33 return try_lock_called; 34 } unlock_sharedshared_mutex35 void unlock_shared() 36 { 37 } 38 }; 39 40 shared_mutex m; 41 main()42int main() 43 { 44 boost::shared_lock<shared_mutex> lk(m, boost::defer_lock); 45 BOOST_TEST(lk.try_lock() == true); 46 BOOST_TEST(try_lock_called == true); 47 BOOST_TEST(lk.owns_lock() == true); 48 try 49 { 50 lk.try_lock(); 51 BOOST_TEST(false); 52 } 53 catch (boost::system::system_error& e) 54 { 55 BOOST_TEST(e.code().value() == boost::system::errc::resource_deadlock_would_occur); 56 } 57 lk.unlock(); 58 BOOST_TEST(lk.try_lock() == false); 59 BOOST_TEST(try_lock_called == false); 60 BOOST_TEST(lk.owns_lock() == false); 61 lk.release(); 62 try 63 { 64 lk.try_lock(); 65 BOOST_TEST(false); 66 } 67 catch (boost::system::system_error& e) 68 { 69 BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted); 70 } 71 72 return boost::report_errors(); 73 } 74 75