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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "test_tools.h"
#include "unit_test.h"
#include "qpid/sys/Poller.h"
#include "qpid/sys/PollableCondition.h"
#include "qpid/sys/Monitor.h"
#include "qpid/sys/Time.h"
#include "qpid/sys/Thread.h"
#include <boost/bind.hpp>
QPID_AUTO_TEST_SUITE(PollableConditionTest)
using namespace qpid::sys;
const Duration SHORT = TIME_SEC/100;
const Duration LONG = TIME_SEC/10;
class Callback {
public:
enum Action { NONE, DISARM, CLEAR, DISARM_CLEAR };
Callback() : count(), action(NONE) {}
void call(PollableCondition& pc) {
Mutex::ScopedLock l(lock);
++count;
switch(action) {
case NONE: break;
case DISARM: pc.disarm(); break;
case CLEAR: pc.clear(); break;
case DISARM_CLEAR: pc.disarm(); pc.clear(); break;
}
action = NONE;
lock.notify();
}
bool isCalling() { Mutex::ScopedLock l(lock); return wait(LONG); }
bool isNotCalling() { Mutex::ScopedLock l(lock); return !wait(SHORT); }
bool nextCall(Action a=NONE) {
Mutex::ScopedLock l(lock);
action = a;
return wait(LONG);
}
private:
bool wait(Duration timeout) {
int n = count;
AbsTime deadline(now(), timeout);
while (n == count && lock.wait(deadline))
;
return n != count;
}
Monitor lock;
int count;
Action action;
};
QPID_AUTO_TEST_CASE(testPollableCondition) {
boost::shared_ptr<Poller> poller(new Poller());
Callback callback;
PollableCondition pc(boost::bind(&Callback::call, &callback, _1), poller);
Thread runner = Thread(*poller);
BOOST_CHECK(callback.isNotCalling()); // condition is not set or armed.
pc.rearm();
BOOST_CHECK(callback.isNotCalling()); // Armed but not set
pc.set();
BOOST_CHECK(callback.isCalling()); // Armed and set.
BOOST_CHECK(callback.isCalling()); // Still armed and set.
callback.nextCall(Callback::DISARM);
BOOST_CHECK(callback.isNotCalling()); // set but not armed
pc.rearm();
BOOST_CHECK(callback.isCalling()); // Armed and set.
callback.nextCall(Callback::CLEAR);
BOOST_CHECK(callback.isNotCalling()); // armed but not set
pc.set();
BOOST_CHECK(callback.isCalling()); // Armed and set.
callback.nextCall(Callback::DISARM_CLEAR);
BOOST_CHECK(callback.isNotCalling()); // not armed or set.
poller->shutdown();
runner.join();
}
QPID_AUTO_TEST_SUITE_END()
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