ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/unique_lock/locking/try_lock_until_pass.cpp

   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 unique_lock;
  18
  19 // template <class Clock, class Duration>
  20 //   bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time);
  21
  22 #include <boost/thread/lock_types.hpp>
  23 #include <boost/thread/mutex.hpp>
  24 #include <boost/detail/lightweight_test.hpp>
  25
  26 #if defined BOOST_THREAD_USES_CHRONO
  27
  28
  29 bool try_lock_until_called = false;
  30
  31 struct mutex
  32 {
  33   template <class Clock, class Duration>
  34   bool try_lock_until(const boost::chrono::time_point<Clock, Duration>& abs_time)
  35   {
  36     typedef boost::chrono::milliseconds ms;
  37     BOOST_TEST(Clock::now() - abs_time < ms(5));
  38     try_lock_until_called = !try_lock_until_called;
  39     return try_lock_until_called;
  40   }
  41   void unlock()
  42   {
  43   }
  44 };
  45
  46 mutex m;
  47
  48 int main()
  49 {
  50   typedef boost::chrono::steady_clock Clock;
  51   boost::unique_lock<mutex> lk(m, boost::defer_lock);
  52   BOOST_TEST(lk.try_lock_until(Clock::now()) == true);
  53   BOOST_TEST(try_lock_until_called == true);
  54   BOOST_TEST(lk.owns_lock() == true);
  55   try
  56   {
  57     lk.try_lock_until(Clock::now());
  58     BOOST_TEST(false);
  59   }
  60   catch (boost::system::system_error& e)
  61   {
  62     BOOST_TEST(e.code().value() == boost::system::errc::resource_deadlock_would_occur);
  63   }
  64   lk.unlock();
  65   BOOST_TEST(lk.try_lock_until(Clock::now()) == false);
  66   BOOST_TEST(try_lock_until_called == false);
  67   BOOST_TEST(lk.owns_lock() == false);
  68   lk.release();
  69   try
  70   {
  71     lk.try_lock_until(Clock::now());
  72     BOOST_TEST(false);
  73   }
  74   catch (boost::system::system_error& e)
  75   {
  76     BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted);
  77   }
  78   return boost::report_errors();
  79 }
  80
  81 #else
  82 #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported"
  83 #endif
  84