ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/shared_lock/locking/try_lock_for_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 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_for_called = false;
  27
  28 typedef boost::chrono::milliseconds ms;
  29
  30 struct shared_mutex
  31 {
  32   template <class Rep, class Period>
  33   bool try_lock_shared_for(const boost::chrono::duration<Rep, Period>& rel_time)
  34   {
  35     BOOST_TEST(rel_time == ms(5));
  36     try_lock_for_called = !try_lock_for_called;
  37     return try_lock_for_called;
  38   }
  39   void unlock_shared()
  40   {
  41   }
  42 };
  43
  44 shared_mutex m;
  45
  46 int main()
  47 {
  48   boost::shared_lock<shared_mutex> lk(m, boost::defer_lock);
  49   BOOST_TEST(lk.try_lock_for(ms(5)) == true);
  50   BOOST_TEST(try_lock_for_called == true);
  51   BOOST_TEST(lk.owns_lock() == true);
  52   try
  53   {
  54     lk.try_lock_for(ms(5));
  55     BOOST_TEST(false);
  56   }
  57   catch (boost::system::system_error& e)
  58   {
  59     BOOST_TEST(e.code().value() == boost::system::errc::resource_deadlock_would_occur);
  60   }
  61   lk.unlock();
  62   BOOST_TEST(lk.try_lock_for(ms(5)) == false);
  63   BOOST_TEST(try_lock_for_called == false);
  64   BOOST_TEST(lk.owns_lock() == false);
  65   lk.release();
  66   try
  67   {
  68     lk.try_lock_for(ms(5));
  69     BOOST_TEST(false);
  70   }
  71   catch (boost::system::system_error& e)
  72   {
  73     BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted);
  74   }
  75
  76   return boost::report_errors();
  77 }
  78