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.
105 lines
2.9 KiB
C++
105 lines
2.9 KiB
C++
/*
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ThreadWrapperAutonomous(Test) - launching a self-contained and completely detached thread
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Copyright (C)
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2023, 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 thread-wrapper-autonomous-test.cpp
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** unit test \ref ThreadWrapperAutonomous_test
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*/
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#include "lib/test/run.hpp"
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#include "lib/test/tracking-dummy.hpp"
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#include "lib/thread.hpp"
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#include <atomic>
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#include <chrono>
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using test::Test;
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using std::atomic_bool;
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using std::this_thread::sleep_for;
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using namespace std::chrono_literals;
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namespace lib {
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namespace test{
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/*******************************************************************//**
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* @test a variation of the Thread wrapper to launch a detached thread,
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* with automatic memory management for the _thread-object._.
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* @see thread.hpp
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* @see ThreadWrapper_test
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*/
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class ThreadWrapperAutonomous_test : public Test
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{
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virtual void
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run (Arg)
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{
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demonstrateSimpleUsage();
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verifyMemoryManagement();
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}
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/** @test demonstrate simply launching a λ-function into background */
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void
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demonstrateSimpleUsage()
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{
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atomic_bool didRun{false};
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launchDetached ("anarchy", [&]{ didRun = true; });
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sleep_for(1ms);
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CHECK (didRun); // verify the effect has taken place
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}
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/**
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* @test verify the detached thread autonomously manages its memory.
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*/
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void
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verifyMemoryManagement()
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{
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struct TestThread
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: ThreadHookable
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{
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using ThreadHookable::ThreadHookable;
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Dummy watcher;
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void
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doIt (int extra)
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{
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watcher.setVal (extra);
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sleep_for (5ms);
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}
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};
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// Note the Dummy member allows to watch instance lifecycle
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CHECK (0 == Dummy::checksum());
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launchDetached<TestThread> (&TestThread::doIt, 55);
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CHECK (0 < Dummy::checksum());
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sleep_for (1ms);
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CHECK (55 == Dummy::checksum());
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sleep_for (10ms);
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CHECK (0 == Dummy::checksum());
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}
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};
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/** Register this test class... */
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LAUNCHER (ThreadWrapperAutonomous_test, "function common");
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}} // namespace lib::test
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