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Re: RunLoop in Helper Tool
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Re: RunLoop in Helper Tool


  • Subject: Re: RunLoop in Helper Tool
  • From: "Gerriet M. Denkmann" <email@hidden>
  • Date: Sun, 15 Sep 2013 21:23:52 +0700

On 15 Sep 2013, at 16:42, Jean-Daniel Dupas <email@hidden> wrote:

> XPC is based on GCD. There is chance that your request handling occurs in a GCD thread and not on the main thread.

Correct. NSThread tells me:
mainThread 		<NSThread: 0x7f92b14096a0>{name = (null), num = 1}
currentThread 	<NSThread: 0x7f92b3502cf0>{name = (null), num = 2}


> [NSRunLoop currentRunLoop] returns the current thread run loop. If you are not on the main thread, it will not work.

NSRunLoop *currentRunLoop = [ NSRunLoop currentRunLoop ];
CFRunLoopRef rl1 = [ currentRunLoop getCFRunLoop ];		//	mode = nil

CFRunLoopRef rl2 = CFRunLoopGetMain ();				//	mode = kCFRunLoopDefaultMode


> Try that instead: CFRunLoopStop(CFRunLoopGetMain());
Tried it. Even tried stopping both run loops, but to no avail. The helper tool just will not quit.

But maybe I will be able to make my NSTimers work now having a better understanding of what is going on.

Thanks!

Gerriet.


> Le 15 sept. 2013 à 10:32, Gerriet M. Denkmann <email@hidden> a écrit :
>
>> I have a Helper Tool, running as root, started via SMJobBless and communicating vie Xpc.
>>
>> Works fine, but:
>> 1. it cannot stop (CFRunLoopStop),
>> 2. Timers never fire
>> 3. NSRunLoop currentMode returns nil.
>>
>> Maybe all three things are related.
>>
>> To 1:
>>
>> if ( asked to quit )
>> {
>> 	NSRunLoop *currentRunLoop = [ NSRunLoop currentRunLoop ];
>> 	CFRunLoopRef rl = [ currentRunLoop getCFRunLoop ];
>> 	NSLog(@"%s will stop runloop %p",__FUNCTION__, rl);	//	rl ≠ NULL
>> 	CFRunLoopStop ( rl );		//	runLoop will NOT stop
>> }
>>
>> Helper Tool main:
>>
>> int main(int argc, const char * argv[])
>> {
>> 	@autoreleasepool
>> 	{
>> 		NSString * bundleIdentifier = [[NSBundle mainBundle] bundleIdentifier];
>> 		NSXPCListener *listener = [[NSXPCListener alloc] initWithMachServiceName: bundleIdentifier ];
>> 		listener.delegate = ...;
>> 		[listener resume];
>> 		NSRunLoop *currentRunLoop = [NSRunLoop currentRunLoop];
>> 		[ currentRunLoop run ];
>> 	}
>>
>>   return EXIT_SUCCESS;
>> }

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  • Follow-Ups:
    • Re: RunLoop in Helper Tool
      • From: Jean-Daniel Dupas <email@hidden>
References: 
 >RunLoop in Helper Tool (From: "Gerriet M. Denkmann" <email@hidden>)
 >Re: RunLoop in Helper Tool (From: Jean-Daniel Dupas <email@hidden>)

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