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Why do pthreads’ condition variable functions require a mutex?
...hat it was signaled (it is stateless). So then the original thread goes to sleep on the stateless synchronization object, and does not wake up, even though the condition it needs has already become true: lost wakeup.
The condition variable wait functions avoid the lost wake up by making sure that t...
iPhone Data Usage Tracking/Monitoring
... has been active. mach_absolute_time mostly stops counting when the device sleeps.
– Bob Whiteman
Oct 26 '15 at 20:26
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Heroku free account limited?
...ong time (5-10 sec)
If a free dyno isn't accessed frequently it goes into sleep mode. After that there is a delay for the dyno to become active again. For me this takes 5-10sec. You cannot fool the system by accessing it frequently because this is consuming your free dyno hours.
...
How to design a multi-user ajax web application to be concurrently safe
...amount continuous CPU and I/O work done in each of these (you want lots of sleep/idle time)
backend scaling
Forget database and filesystem, you will need some sort of shared memory based backend for the frequent polling (if the client does not poll directly then each running server process will)...
Timertask or Handler
...scheduled tasks and they are never run
Copied from:
TimerTask vs Thread.sleep vs Handler postDelayed - most accurate to call function every N milliseconds?
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Best Practice for Forcing Garbage Collection in C#
...w minutes to process some items, and does not keep any state while it’s asleep. Then forcing a full collection just before going to sleep may be worthwhile.
The only time I would consider forcing
a collection is when I know that a lot
of object had been created recently
and very few obj...
How do I pass values to the constructor on my wcf service?
... to jump through too many hoops imposed by WCF.
I'm not going to lose any sleep over this approach. Neither should anyone else. After all, you're IoC container is a big, fat, static collection of delegates that creates stuff for you. What's adding one more?
...
How can I update the current line in a C# Windows Console App?
...k;
case 3: Console.Write("|"); break;
}
Thread.Sleep(100);
Console.SetCursorPosition(Console.CursorLeft - 1, Console.CursorTop);
}
}
Note that you will have to make sure to overwrite any existing output with new output or blanks.
Update: As it has been crit...
What is the coolest thing you can do in
...haracter.Play "GetAttention"
character.Speak "Hello, how are you?"
Wscript.Sleep 15000
character.Stop
character.Play "Hide"
There are a great many other commands you can use. Check http://www.microsoft.com/technet/scriptcenter/funzone/agent.mspx for more information.
EDIT 2011-09-02
I recently di...
Capturing Ctrl-c in ruby
...ollowing:
trap("SIGINT") { throw :ctrl_c }
catch :ctrl_c do
begin
sleep(10)
rescue Exception
puts "Not printed"
end
end
This basically has CtrlC use catch/throw instead of exception handling, so unless the existing code already has a catch :ctrl_c in it, it should be fine.
Alterna...