Ichthyostega
73737f2aee
After the fundamental switch from POSIX to the C++14 wrappers the existing implementation of the Monitor can now be drastically condensed, removing several layers of indirection. Moreover, all signatures shall be changed to blend in with the names and patterns established by the C++ standard. This is Step-1 : consolidate the Implementation. (to ensure correctness, the existing API towards application code was retained)
96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
/*
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SyncTimedwait(Test) - check the monitor object based timed condition wait
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Copyright (C) Lumiera.org
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2008, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* *****************************************************/
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/** @file sync-timedwait-test.cpp
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** unit test \ref SyncTimedwait_test
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*/
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#include "lib/test/run.hpp"
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#include "lib/error.hpp"
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#include "lib/sync.hpp"
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#include <chrono>
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using test::Test;
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using std::chrono::system_clock;
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namespace lib {
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namespace test{
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namespace { // test parameters...
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const uint WAIT_mSec = 20; ///< milliseconds to wait before timeout
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using CLOCK_SCALE = std::milli; // Results are in ms
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using Dur = std::chrono::duration<double, CLOCK_SCALE>;
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}//(End) parameters
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/****************************************************************************//**
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* @test timeout feature on condition wait as provided by the underlying implementation
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* and accessible via the object monitor based locking/waiting mechanism. Without
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* creating multiple threads, we engage into a blocking wait, which aborts due to
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* setting a timeout.
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* @see SyncWaiting_test
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* @see sync.hpp
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*/
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class SyncTimedwait_test
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: public Test,
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Sync<NonrecursiveLock_Waitable>
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{
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friend class Lock; // allows inheriting privately from Sync
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virtual void
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run (Arg)
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{
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Lock lock(this);
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auto start = system_clock::now();
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auto salvation = []{ return false; };
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bool fulfilled = lock.wait (salvation, WAIT_mSec);
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CHECK (not fulfilled); // condition not fulfilled, but timeout
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Dur duration = system_clock::now () - start;
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CHECK (WAIT_mSec <= duration.count());
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CHECK (duration.count() < 2*WAIT_mSec);
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}
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};
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/** Register this test class... */
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LAUNCHER (SyncTimedwait_test, "unit common");
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}} // namespace lib::test
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