2015-04-07 12:13:12 +02:00
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/*
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Minetest
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Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "test.h"
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2017-06-06 14:34:14 +02:00
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#include <atomic>
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2015-04-07 12:13:12 +02:00
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#include "threading/semaphore.h"
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#include "threading/thread.h"
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class TestThreading : public TestBase {
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public:
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TestThreading() { TestManager::registerTestModule(this); }
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const char *getName() { return "TestThreading"; }
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2015-10-18 04:42:48 +02:00
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void runTests(IGameDef *gamedef);
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void testStartStopWait();
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2015-04-07 12:13:12 +02:00
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void testAtomicSemaphoreThread();
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};
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static TestThreading g_test_instance;
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2015-10-18 04:42:48 +02:00
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void TestThreading::runTests(IGameDef *gamedef)
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2015-04-07 12:13:12 +02:00
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{
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2015-10-18 04:42:48 +02:00
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TEST(testStartStopWait);
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2015-04-07 12:13:12 +02:00
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TEST(testAtomicSemaphoreThread);
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}
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2015-10-18 04:42:48 +02:00
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class SimpleTestThread : public Thread {
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public:
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SimpleTestThread(unsigned int interval) :
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Thread("SimpleTest"),
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m_interval(interval)
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{
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}
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private:
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void *run()
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{
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void *retval = this;
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if (isCurrentThread() == false)
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retval = (void *)0xBAD;
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while (!stopRequested())
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sleep_ms(m_interval);
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return retval;
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}
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unsigned int m_interval;
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};
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void TestThreading::testStartStopWait()
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{
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void *thread_retval;
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SimpleTestThread *thread = new SimpleTestThread(25);
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// Try this a couple times, since a Thread should be reusable after waiting
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for (size_t i = 0; i != 5; i++) {
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// Can't wait() on a joined, stopped thread
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UASSERT(thread->wait() == false);
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// start() should work the first time, but not the second.
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UASSERT(thread->start() == true);
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UASSERT(thread->start() == false);
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UASSERT(thread->isRunning() == true);
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UASSERT(thread->isCurrentThread() == false);
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// Let it loop a few times...
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sleep_ms(70);
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// It's still running, so the return value shouldn't be available to us.
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UASSERT(thread->getReturnValue(&thread_retval) == false);
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// stop() should always succeed
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UASSERT(thread->stop() == true);
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// wait() only needs to wait the first time - the other two are no-ops.
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UASSERT(thread->wait() == true);
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UASSERT(thread->wait() == false);
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UASSERT(thread->wait() == false);
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// Now that the thread is stopped, we should be able to get the
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// return value, and it should be the object itself.
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thread_retval = NULL;
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UASSERT(thread->getReturnValue(&thread_retval) == true);
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UASSERT(thread_retval == thread);
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}
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delete thread;
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}
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2015-04-07 12:13:12 +02:00
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2015-10-18 04:42:48 +02:00
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class AtomicTestThread : public Thread {
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2015-04-07 12:13:12 +02:00
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public:
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2017-06-06 14:34:14 +02:00
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AtomicTestThread(std::atomic<u32> &v, Semaphore &trigger) :
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2015-04-07 12:13:12 +02:00
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Thread("AtomicTest"),
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val(v),
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trigger(trigger)
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2015-10-18 04:42:48 +02:00
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{
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}
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2015-04-07 12:13:12 +02:00
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private:
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void *run()
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{
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trigger.wait();
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for (u32 i = 0; i < 0x10000; ++i)
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++val;
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return NULL;
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}
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2015-10-18 04:42:48 +02:00
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2017-06-06 14:34:14 +02:00
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std::atomic<u32> &val;
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2015-04-07 12:13:12 +02:00
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Semaphore &trigger;
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};
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void TestThreading::testAtomicSemaphoreThread()
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{
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2017-06-06 14:34:14 +02:00
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std::atomic<u32> val;
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2016-10-05 22:17:22 +02:00
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val = 0;
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2015-04-07 12:13:12 +02:00
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Semaphore trigger;
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static const u8 num_threads = 4;
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AtomicTestThread *threads[num_threads];
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2017-08-19 22:23:47 +02:00
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for (auto &thread : threads) {
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thread = new AtomicTestThread(val, trigger);
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UASSERT(thread->start());
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2015-04-07 12:13:12 +02:00
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}
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trigger.post(num_threads);
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2017-08-19 22:23:47 +02:00
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for (AtomicTestThread *thread : threads) {
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thread->wait();
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delete thread;
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2015-04-07 12:13:12 +02:00
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}
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UASSERT(val == num_threads * 0x10000);
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}
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