public void DoubleStopTest()
{
//arrange
var producer = new ProducerConsumer <Block>();
var block = new Block(0, null);
//act
producer.Stop();
producer.Stop();
//assert
Assert.ThrowsException <InvalidOperationException>(() => producer.Enqueue(block));
}
public void DequeueTest_DequeueItemFromStoppedQueueIsNull()
{
//arrange
var producer = new ProducerConsumer <Block>();
//act
producer.Stop();
var resultItemFromDequeue = producer.Dequeue();
//assert
Assert.IsNull(resultItemFromDequeue);
}
public int Run()
{
try
{
workingThreads.ForEach(thread => thread.Start());
while (!interrupted)
{
if (tasks.Size() > 2 * concurrency || results.Size() > 2 * concurrency)
{
Thread.Yield();
continue;
}
var data = getDataBlock();
if (data == null)
{
tasks.Stop();
break;
}
tasks.Enqueue(data);
}
// join only processing tread and not the result aggregator
for (var i = 1; i < workingThreads.Count; i++)
{
workingThreads[i].Join();
}
// notifies the result aggregator thread that no new information would be added and wait for it to finish
results.Stop();
workingThreads[0].Join();
} catch (HandledException e)
{
this.Interrupt();
} catch (Exception e)
{
Console.WriteLine($"Unhandled exception: {e.Message}");
this.Interrupt();
}
return(interrupted ? 1 : 0);
}
// This is a HUGE test which involves actual threads and takes time,
// so technically it is not a unit test.
// But this is a sort of pet-form of the whole project, and covers the main sense of it.
// Actually, this is a code of my prototype application so it is also not well structured.
//
// Whats going on:
// - "Reader" thread produces a sequence of numbers and passes to Producer-Consumer (P-C)
// - A number of worker threads consume and "process" them (actually do nothing with a random delay)
// then pass to the next P-C
// - A "writer" thread collects all the integers passed in the list.
// The goal of the test is to ensure that the final list contains exactly the same numbers
// as produced by "reader"
public void ProducerConsumerShouldWork()
{
var readerPc = new ProducerConsumer <IntTask>(8, new ProducerConsumerQueue <IntTask>());
var processorsPcs = new List <ProducerConsumer <IntTask> >();
var finishPc = new ProducerConsumer <IntTask>(8, new ProducerConsumerQueue <IntTask>());
const int integersToReadCount = 50;
var integersToRead = new List <int>(integersToReadCount);
var rand = new Random(DateTime.Now.Millisecond);
for (var i = 0; i < integersToReadCount; i++)
{
integersToRead.Add(rand.Next(10000));
}
var readerThread = new Thread(new ThreadStart(() =>
{
var rnd = new Random(DateTime.Now.Millisecond);
var currId = 0;
for (int i = 0; i < integersToReadCount; i++)
{
var pc = new IntTask {
Id = i, Data = integersToRead[i]
};
readerPc.Push(pc);
Thread.Sleep(rnd.Next(10));
currId++;
}
readerPc.Stop();
var endPc = new IntTask {
Id = currId, Data = 0
};
finishPc.Push(endPc);
}));
readerThread.Start();
for (int i = 0; i < 4; i++)
{
var processorId = i;
var prodCons = new ProducerConsumer <IntTask>(4, new ProducerConsumerOrderedQueue <IntTask>());
processorsPcs.Add(prodCons);
var processorThread = new Thread(new ThreadStart(() =>
{
var rnd = new Random(DateTime.Now.Millisecond);
var pc = readerPc.Pop();
while (pc != null)
{
processorsPcs[processorId].Push(pc);
pc = readerPc.Pop();
Thread.Sleep(rnd.Next(1000));
}
}));
processorThread.Start();
}
var writerList = new List <int>(integersToReadCount);
var writer = new Thread(new ThreadStart(() => {
int currId = 0;
while (true)
{
var allProcessorsEmpty = true;
for (int i = 0; i < processorsPcs.Count; i++)
{
var t = processorsPcs[i].Peek();
if (t != null)
{
allProcessorsEmpty = false;
if (t.Id == currId)
{
t = processorsPcs[i].Pop();
writerList.Add(t.Data);
currId++;
}
}
}
if (allProcessorsEmpty)
{
var finishPcData = finishPc.Peek();
if (finishPcData != null && finishPcData.Id == currId)
{
break;
}
}
}
}));
writer.Start();
writer.Join();
Assert.IsTrue(integersToRead.SequenceEqual(writerList));
}
private void btn_Satrt_Click(object sender, EventArgs e)
{
if (!_noticeFlag)
{
_noticeFlag = true;
_noticeDateTime = DateTime.Now;
Logging("启动[提醒]服务");
SetbtnState(btn_Satrt, "停止[提醒]服务", true);
SetlblState(lbl_State, "[提醒]扫描服务运行中(" + _noticeDateTime + ")", Color.Green);
//重置提醒扫描状态：正在扫描--> 等到扫描
var resetStandbyTask = new Task <bool>(() =>
{
var isReset = false;
try
{
isReset = ResetAllRemindScan();
}
catch
{
}
return(isReset);
});
resetStandbyTask.Start();
resetStandbyTask.Wait();
var isSuccess = resetStandbyTask.Result;
if (isSuccess)
{
Logging("重置\"扫描中\"的[提醒]扫描服务为等待扫描成功！");
}
else
{
Logging("[提醒]扫描服务启动失败：重置\"扫描中\"的[提醒]扫描服务为等待扫描失败！");
_noticeFlag = false;
SetbtnState(btn_Satrt, "启动[提醒]扫描服务", true);
SetlblState(lbl_State, "[提醒]扫描服务停止", Color.Red);
return;
}
//初始化相关变量、工作线程
//等到重置“发送中”任务结束后，才能执行下面任务：
//获取[未提醒]列表数据,为[发起提醒]生产者提供生产方法
var getRetryTimes = 0;
Func <List <string> > ProduceFunc = () =>
{
//休眠获取[提醒]列表数据，主要为了间断查询。
Thread.Sleep(_SleepQuery);
var unList = new List <string>();
try
{
unList = GetTaskList();
if (unList.Count > 0)
{
Logging("获取[提醒]队列成功！");
}
getRetryTimes = 0;
}
catch (Exception ex)
{
getRetryTimes = getRetryTimes + 1;
if (getRetryTimes >= _GetQueryRetryTimes)
{
_noticeFlag = false;
Logging(
"[提醒]服务意外停止：获取[未提醒]队列连续失败" + getRetryTimes + "次！|| 错误原因：" +
(ex.InnerException == null ? ex.Message : ex.InnerException.ToString()),
(string.IsNullOrWhiteSpace(ex.StackTrace) ? "" : ex.StackTrace));
ChangeAllServerState();
if (_producerConsumer != null)
{
_producerConsumer.Stop();
}
}
else
{
Logging(
"获取[未提醒]队列连续失败" + getRetryTimes + "次！|| 错误原因：" +
(ex.InnerException == null ? ex.Message : ex.InnerException.ToString()),
(string.IsNullOrWhiteSpace(ex.StackTrace) ? "" : ex.StackTrace));
}
}
return(unList);
};
int consumeRetryTimes = 0;
//为[未提醒]消费者提供消费方法
Action <string> notNoticeAction = item =>
{
if (!string.IsNullOrEmpty(item))
{
long durTime = -1;
var durTimeUnit = "毫秒";
var durTimer = new Stopwatch();
durTimer.Start();
try
{
//执行活动提交服务
var result = PostRemind(item);
durTimer.Stop();
durTime = durTimer.ElapsedMilliseconds;
if (durTime >= 1000)
{
durTimeUnit = "秒";
durTime = durTime / 1000;
}
lock (_noticeLock)
{
consumeRetryTimes = 0;
}
Logging("[未提醒]提交成功." + "(商家ID:" + item + "，运行结果:" + (result ? "提醒成功" : "提醒失败") + "，耗时:" +
durTime.ToString() + durTimeUnit + ")");
}
catch (Exception ex)
{
lock (_noticeLock)
{
consumeRetryTimes++;
if (consumeRetryTimes >= _GetQueryRetryTimes)
{
_noticeFlag = false;
Logging(
"[未提醒]服务意外停止:提交提醒服务连续失败" + consumeRetryTimes + "次![其中包含ID：" + item +
"] || 错误原因：" +
(ex.InnerException == null ? ex.Message : ex.InnerException.ToString()),
(string.IsNullOrWhiteSpace(ex.StackTrace) ? "" : ex.StackTrace));
ChangeAllServerState();
if (_producerConsumer != null)
{
_producerConsumer.Stop();
}
}
else
{
Logging(
"[未提醒]提交提醒服务连续失败" + consumeRetryTimes + "次![其中包含商家ID:" + item +
"] || 错误原因：" +
(ex.InnerException == null ? ex.Message : ex.InnerException.ToString()),
(string.IsNullOrWhiteSpace(ex.StackTrace) ? "" : ex.StackTrace));
}
}
}
Thread.Sleep(_SleepPost);
}
};
//构造生产消费模式，初始化如生产方法，消费方法，指定消费者数量
_producerConsumer = new ProducerConsumer <string>(ProduceFunc,
notNoticeAction, _remainStandbyCount,
_reminTaskNum);
_producerConsumer.Start();
}
else //停止
{
_noticeFlag = false;
if (_producerConsumer != null)
{
_producerConsumer.Stop();
}
Logging("手动停止[未提醒]扫描服务");
SetbtnState(btn_Satrt, "启动[提醒]扫描服务", true);
SetlblState(lbl_State, "[提醒]扫描服务停止", Color.Red);
}
}