ca971bbfd8
This patch changes the top-level directory layout as a preparatory step for improving the tools for managing 3rd-party source codes. The rationale is described in the issue referenced below. Issue #1082
104 lines
2.1 KiB
C++
104 lines
2.1 KiB
C++
/*
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* \brief Test for the timed-semaphore
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* \author Stefan Kalkowski
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* \date 2010-03-05
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*/
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/*
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* Copyright (C) 2010-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#include <timer_session/connection.h>
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#include <os/timed_semaphore.h>
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#include <base/thread.h>
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using namespace Genode;
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class Wakeup_thread : public Thread<4096>
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{
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private:
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Timed_semaphore *_sem;
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Timer::Session *_timer;
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int _timeout;
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Lock _lock;
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bool _stop;
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public:
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Wakeup_thread(Timed_semaphore *sem,
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Timer::Session *timer,
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Alarm::Time timeout)
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: Thread("wakeup"), _sem(sem), _timer(timer), _timeout(timeout),
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_lock(Lock::LOCKED), _stop(false) { }
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void entry()
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{
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while(true) {
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_timer->msleep(_timeout);
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_sem->up();
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if (_stop) {
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_lock.unlock();
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return;
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}
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}
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}
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void stop() { _stop = true; _lock.lock(); }
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};
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bool test_loop(Timer::Session *timer, Alarm::Time timeout1, Alarm::Time timeout2, int loops)
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{
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Timed_semaphore sem;
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Wakeup_thread thread(&sem, timer, timeout2);
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bool ret = true;
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thread.start();
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try{
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for (int i = 0; i < loops; i++)
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sem.down(timeout1);
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} catch (Timeout_exception) {
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ret = false;
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}
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/*
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* Explicitly stop the thread, so the destructor does not get called in
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* unfavourable situations, e.g. where the semaphore-meta lock is still
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* held and the semaphore destructor stalls afterwards
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*/
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thread.stop();
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return ret;
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}
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int main(int, char **)
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{
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printf("--- timed-semaphore test ---\n");
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Timer::Connection timer;
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printf("--- test 1: good case, no timeout triggers --\n");
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if(!test_loop(&timer, 1000, 100, 10)) {
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PERR("Test 1 failed!");
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return -1;
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}
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printf("--- everything went ok --\n");
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printf("--- test 2: triggers timeouts --\n");
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if(test_loop(&timer, 100, 1000, 10)) {
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PERR("Test 2 failed!");
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return -2;
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}
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printf("--- everything went ok --\n");
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printf("--- end of timed-semaphore test ---\n");
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return 0;
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}
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