Ichthyostega
416895b5b2
The investigation for #1279 leads to the following conclusions - the features and the design of our custom thread-wrapper almost entirely matches the design chosen meanwhile by the C++ committee - the implementation provided by the standard library however uses modern techniques (especially Atomics) and is more precisely worked out than our custom implementation was. - we do not need an *active* threadpool with work-assignment, rather we'll use *active* workers and a *passive* pool, which was easy to implement based on C++17 features ==> decision to drop our POSIX based custom implementation and to retrofit the Thread-wrapper as a drop-in replacement +++ start this refactoring by moving code into the Library +++ create a copy of the Threadwrapper-code to build and test the refactorings while the application itself still uses existing code, until the transition is complete
89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
/*
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ThreadWrapperSelfRecognitionTest(Test) - detect when code is running within a thread
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Copyright (C) Lumiera.org
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2017, 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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#include "lib/test/run.hpp"
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#include "lib/test/test-helper.hpp"
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#include "lib/thread.hpp"
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#include "lib/error.hpp"
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using test::Test;
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namespace lib {
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namespace test {
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namespace {
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class TestThread
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: Thread
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{
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public:
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TestThread()
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: Thread{"test Thread self recognition"
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,[&]()
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{
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CHECK (invocation_happens_within_this_thread());
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}}
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{ }
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bool
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invocation_happens_within_this_thread()
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{
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return invokedWithinThread();
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}
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};
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}
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/******************************************************//**
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* @test verify the ability of a thread to detect code
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* executing within the thread itself.
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*
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* @see Thread::invokedWithinThread()
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* @see steam::control::DispatcherLoop::stateIsSynched()
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*/
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class ThreadWrapperSelfRecognitionTest_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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TestThread testThread;
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CHECK (not testThread.invocation_happens_within_this_thread());
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usleep(10); // give the thread a chance to run before shutdown
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}
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};
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/** Register this test class... */
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LAUNCHER (ThreadWrapperSelfRecognitionTest_test, "function common");
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}} // namespace lib::test
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