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Difference between dispatch_async and dispatch_sync on serial queue?
...hange anything. This code always print 12
dispatch_async(_serialQueue, ^{ sleep(1000);printf("1"); });
dispatch_async(_serialQueue, ^{ printf("2"); });
What may happened is
Thread 1: dispatch_async a time consuming task (task 1) to serial queue
Thread 2: start executing task 1
Thread 1: dispat...
How can I ensure that a division of integers is always rounded up?
...pted a reasoned answer while my mind was telling me I was 2 hours late for sleep)
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scala vs java, performance and memory? [closed]
...answered Jan 2 '12 at 19:03
Not SleepingNot Sleeping
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Easier way to debug a Windows service
...onsole alive for a second to allow the user to see the message.
Thread.Sleep(1000);
}
This is all the code required, but I also wrote walkthrough with explanations.
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AI2 Media Notification
...Portal: Keeping your Android application running when the device wants to sleep. Most Android installations recognize when a media player is active and do not switch the device off. If it does, the ForegroundService property can be used to specify that a foreground service is started when the not...
Cancellation token in Task constructor: why?
...e.WriteLine("Starting task");
task.Start();
Thread.Sleep(100);
Console.WriteLine("Canceling task");
tokenSource.Cancel();
task.Wait();
}
catch (Exception ex)
{
Console.WriteLine("Exception: {0}", ex.Mess...
MemoryCache does not obey memory limits in configuration
...can do its work more frequently
Console.WriteLine("...");
}
A Thread.Sleep(1) every ~1000th AddItem() would have the same effect.
Well, it's not a very deep investigation of the problem, but it looks as if the thread of the MemoryCache does not get enough CPU time for cleaning, while many new...
内存调试技巧：C 语言最大难点揭秘 - C/C++ - 清泛网 - 专注C/C++及内核技术
...其他任何作者对此加以强调。影响资源（特别是内存）的函数和方法需要显式地解释本身。下面是有关标头、注释或名称的一些示例（请参见清单 6）。
清单 6. 识别资源的源代码示例
/********
* ...
*
* Note that any function...
How the single threaded non blocking IO model works in Node.js
...request to thread pool. It can accept more requests as it does not wait or sleep. SQL queries/HTTP requests/file system reads all happen this way.
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Which concurrent Queue implementation should I use in Java?
...ut the consumer side is more complicated because poll won't go into a nice sleep state. You have to handle that yourself.
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