what is the maximum value that can be assigned to rununtildate for runloop?

Question

I am trying to make this runloop run forever(if not forever atleast for a single day) I am using the following function for runloop [self.runLoop runUntilDate:[NSDate dateWithTimeIntervalSinceNow:100000]];

The problem is that the app crashes after 3 hours.Can anybody help me?

Can you give us some more information about the crash? – gaige Mar 21 '13 at 08:28 — gaige, Mar 21 '13 at 08:28
@gaige the app just stops working – zzzzz Mar 21 '13 at 08:33 — zzzzz, Mar 21 '13 at 08:33

Rob · Accepted Answer · 2013-03-21T12:50:53.693

2

If you want it to run perpetually (and assuming you've attached timers and/or input sources), you can use

[self.runLoop run];

If you want to stay with your current construct, you can use:

[self.runLoop runUntilDate:[NSDate distantFuture]];

I've seen Apple use the following pattern (e.g. listing 3-14 of the Threading Programming Guide; I've also seen NSOperation objects use this construct when invoking an asynchronous operation that they want to wait to complete):

// Let the run loop process things.
do
{
    [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode
                             beforeDate:[NSDate distantFuture]];
}
while ( ... ); // in here you have whatever condition you want to check for

edited Mar 21 '13 at 12:50

answered Mar 21 '13 at 06:36

Rob

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why do i need a while block? I dont need to check any condition.I want the run loop to run forever.How do i add your infor to my line of code? – zzzzz Mar 21 '13 at 06:57
@iOsBoy If you want it to run forever, you can just invoke `run` or `runUntilDate:[NSDate distantFuture]` (assuming you've attached a timer and/or input source). The while loop and `runMode` construct is useful if you're going to terminate upon some condition. Obviously you could use `while(TRUE)`, but the other constructs probably make more sense at that point. – Rob Mar 21 '13 at 12:57

score 1 · Answer 2 · answered Mar 21 '13 at 06:36

1

Try [NSDate distantFuture]. From the documentation: "An NSDate object representing a date in the distant future (in terms of centuries)."

answered Mar 21 '13 at 06:36

fumoboy007

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what is the maximum value that can be assigned to rununtildate for runloop?

2 Answers2