Ichthyostega
9c74466778
This is something I wanted to clean-up since a very long time indeed, but always postponed it, since it requires a lot of nasty clean-up and disentangling.... Several parts had been stashed away into `src/lib/test`, which are not really related: * the testrunner and testsuite builder * generic helper utilities * specialised test-support facilities, e.g. the EventLog This changeset introduces a new top-level test folder and a namespace `::test` Code from this folder is linked into a shared library `libtestsupport.so`, which resides in the linkage hierarchy between »Vessel« and »Vault«, yet is no longer part of the Lumiera application and only linked into the test-suite.
118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
/*
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SyncWaiting(Test) - check the monitor object based wait/notification
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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-waiting-test.cpp
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** unit test \ref SyncWaiting_test
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*/
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#include "test/run.hpp"
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#include "lib/error.hpp"
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#include "lib/thread.hpp"
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#include "lib/sync.hpp"
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#include <atomic>
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using test::Test;
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using std::atomic_uint;
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using std::atomic_bool;
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using std::this_thread::sleep_for;
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using std::chrono_literals::operator ""ms;
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namespace lib {
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namespace test{
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namespace { // test subject...
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/** demonstrates how to wait on a simple boolean flag */
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class SyncOnBool
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: public Sync<NonrecursiveLock_Waitable>
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{
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atomic_uint sum_{0}, input_{0};
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atomic_bool got_new_data_{false};
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public:
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void getIt()
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{
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Lock await{this, [&]{ return bool(got_new_data_); }};
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sum_ += input_;
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}
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void provide (uint val)
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{
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Lock sync{this};
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input_ = val;
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got_new_data_ = true;
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sync.notify_all();
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}
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/** harvesting the result...*/
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uint result () { return sum_; }
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};
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}//(End) test subject.
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/************************************************************************//**
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* @test concurrent waiting and notification, implemented via object monitor.
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* This test covers the second part of the monitor pattern, which builds upon
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* the locking part, additionally using an embedded condition. Two interwoven
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* threads are created, both blocked until a start value is given. Once awakened,
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* each thread should add the start value to a common sum field.
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* @see SyncLocking_test
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* @see sync.hpp
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*/
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class SyncWaiting_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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seedRand();
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SyncOnBool token;
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ThreadJoinable ping ("SyncWaiting ping", [&]{ token.getIt(); });
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ThreadJoinable pong ("SyncWaiting pong", [&]{ token.getIt(); });
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CHECK (ping);
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CHECK (pong);
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CHECK (0 == token.result());
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sleep_for (100ms); // if the threads don't block correctly, they've missed their chance by now...
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// kick off the notification cascade...
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uint val = rani(1000);
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token.provide (val);
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// wait for the two Threads to finish their handshake
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pong.join();
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ping.join();
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CHECK (2*val == token.result());
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}
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};
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/** Register this test class... */
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LAUNCHER (SyncWaiting_test, "unit common");
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}} // namespace lib::test
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