sleep

How to wake up Android Wear when it is in sleep mode?

邮差的信 提交于 2019-12-03 12:46:12
When Android Wear goes to sleep mode (screen dimmed), some parts of my code are not executed. I use Timer in background service to trigger some actions, such as sending data from wear to mobile, but the data is not sent. It is sent when I tap the screen to wake it up. I also try to use Timer trigger a notification with vibration when the screen is off, but it doesn't appear until I tap the screen. In debug mode (either Bluetooth or USB), data sending and notification work fine. I suspect this is because when Android Wear is in sleep mode, its CPU works at minimum level because the Timer is

Make a java program sleep without threading

我的梦境 提交于 2019-12-03 11:23:32
I have a java program that does some calculations and then uploads the results to a MYSQL database (hosted in another computer in the same network). I sometimes face the problem that the program does calculations faster than it uploads the result. Therefore it is not able to upload all the results. The program currently is not threaded. Is there a way I can make the program sleep for a few milliseconds after it has done the calculations so that the upload takes place properly. (Like in other languages sleep or wait function) I can thread the program but that will be too much rewriting. Is

Is it always bad to use Thread.Sleep()?

前提是你 提交于 2019-12-03 10:23:31
I created an extension method for the the class Random which executes an Action (void delegate) at random times: public static class RandomExtension { private static bool _isAlive; private static Task _executer; public static void ExecuteRandomAsync(this Random random, int min, int max, int minDuration, Action action) { Task outerTask = Task.Factory.StartNew(() => { _isAlive = true; _executer = Task.Factory.StartNew(() => { ExecuteRandom(min, max, action); }); Thread.Sleep(minDuration); StopExecuter(); }); } private static void StopExecuter() { _isAlive = false; _executer.Wait(); _executer

Why is “sleeping” not allowed while holding a spinlock? [duplicate]

廉价感情. 提交于 2019-12-03 09:57:16
问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: Why can't you sleep while holding spinlock? As far as I know, spinlocks should be used in short duration, and are only choices in code such as interrupt handler where sleeping (preemption) is not allowed. However, I do not know why there is such a "rule" that there SHOULD BE no sleeping at all while holding a spinlock. I know that it is not a recommended practice (since it is detrimental in performance), but I

OS X time until (system/display/disk) sleep?

∥☆過路亽.° 提交于 2019-12-03 09:41:45
Does anyone know of a way to query OS X in order to find out how much time is actually left before it enters either system sleep or activates the display sleep (or even disk sleep), either via the command line, or any other method (Ruby or Objective-C for instance)? I thought something like pmset via the command line might have offered this information, but it appears to only show and update what the current settings are, rather than allow feedback of where in the cycle the OS currently is. My requirement is that I currently have a Ruby script that I'd like to run only when I'm not using the

How does sleep() work?

a 夏天 提交于 2019-12-03 08:37:34
问题 This might be a stupid question, but how do sleep() , wait() , pause() , functions work? 回答1: We can see the sleeping operation from a more abstract point of view: it is an operation that let you wait for an event. The event in question is triggered when the time passed from sleep invocation exceeds the sleep parameter. When a process is active (ie: it owns a CPU) it can wait for an event in an active or in a passive way: An active wait is when a process actively/explicitly waits for the

What is the best way to program a delay in Delphi?

最后都变了- 提交于 2019-12-03 06:50:14
问题 A Delphi application that I'm working on must delay for one, or sometimes two, second(s). I want to program this delay using the best practices. In reading entries about Delphi's Sleep() method on stackoverflow, I found these two comments: I live by this maxim: "If you feel the need to use Sleep(), you are doing it wrong." – Nick Hodges Mar 12 '12 at 1:36 @nick Indeed. My equivalent is "There are no problems for which Sleep is the solution." – David Heffernan Mar 12 '12 at 8:04 comments about

Javascript: Non-blocking way to wait until a condition is true

耗尽温柔 提交于 2019-12-03 06:46:32
I have several ASP.NET UpdatePanels, each with an AsyncPostBackTrigger tied to the same button's serverside click event. Since only one UpdatePanel can be doing its thing at a time, I use .get_isInAsyncPostBack() of the PageRequestManager to prevent a user from being able to access another part of the page until the async postback is complete. Another part of this page needs to dynamically update multiple update panels consecutively. Since the update panels use async triggers, calling __doPostBack("<%=ButtonName.ClientID %>", 'PanelId'); fires asynchonously. Because of this, it will quickly

What happens to my app when my Mac goes to sleep?

不想你离开。 提交于 2019-12-03 05:58:45
问题 When Mac OS X goes to sleep, due to closing a laptop or selecting "Sleep" from the Apple menu, how does it suspend an executing process? I suppose non-windowed processes are simply suspended at an arbitrary point of execution. Is that also true for Cocoa apps, or does the OS wait until control returns to the run loop dispatcher, and goes to sleep in a "known" location? Does any modern OS do that, or is it usually safe enough to simply suspend an app no matter what it is doing? I'm curious,

How to make a thread sleep for specific amount of time in java?

我是研究僧i 提交于 2019-12-03 05:55:28
I have a scenario where i want a thread to sleep for specific amount of time. Code: public void run(){ try{ //do something Thread.sleep(3000); //do something after waking up }catch(InterruptedException e){ // interrupted exception hit before the sleep time is completed.so how do i make my thread sleep for exactly 3 seconds? } } Now how do i handle the case where the thread i am trying to run is hit with an interrupted exception before the complete of the sleep? Also does the thread wake up after being interrupted and does it go to runnable state or when is it that only after it goes to