Ichthyostega
806db414dd
* Lumiera source code always was copyrighted by individual contributors * there is no entity "Lumiera.org" which holds any copyrights * Lumiera source code is provided under the GPL Version 2+ == Explanations == Lumiera as a whole is distributed under Copyleft, GNU General Public License Version 2 or above. For this to become legally effective, the ''File COPYING in the root directory is sufficient.'' The licensing header in each file is not strictly necessary, yet considered good practice; attaching a licence notice increases the likeliness that this information is retained in case someone extracts individual code files. However, it is not by the presence of some text, that legally binding licensing terms become effective; rather the fact matters that a given piece of code was provably copyrighted and published under a license. Even reformatting the code, renaming some variables or deleting parts of the code will not alter this legal situation, but rather creates a derivative work, which is likewise covered by the GPL! The most relevant information in the file header is the notice regarding the time of the first individual copyright claim. By virtue of this initial copyright, the first author is entitled to choose the terms of licensing. All further modifications are permitted and covered by the License. The specific wording or format of the copyright header is not legally relevant, as long as the intention to publish under the GPL remains clear. The extended wording was based on a recommendation by the FSF. It can be shortened, because the full terms of the license are provided alongside the distribution, in the file COPYING.
89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
/*
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SyncTimedwait(Test) - check the monitor object based timed condition wait
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Copyright (C)
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2008, Hermann Vosseler <Ichthyostega@web.de>
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**Lumiera** is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version. See the file COPYING for further details.
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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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using std::chrono::milliseconds;
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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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const milliseconds TIMEOUT{WAIT_mSec};
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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_for (TIMEOUT, salvation);
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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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