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CFSocket freezes
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CFSocket freezes


  • Subject: CFSocket freezes
  • From: Frank Illenberger <email@hidden>
  • Date: Fri, 25 Nov 2005 22:22:33 +0100

Hi,

I am developing a server using AsyncSocket/CFSocket wich is working fine with only exception, that it freezes in the acceptor thread in a call to CFWriteStreamOpen after having replied about 300-5000 requests. Sometimes it answers 100.000 requests without a problem but 50% of the time it freezes after 500 requests.
The stack trace of the frozen acceptor thread looks like this:



#0 0xffff85d8 in ___spin_lock_relinquish () at /System/Library/ Frameworks/System.framework/PrivateHeaders/ppc/cpu_capabilities.h:186
#1 0x90f1240c in _SocketStreamOpen ()
#2 0x9076c39c in _CFStreamOpen ()
#3 0x9076c314 in CFWriteStreamOpen ()
#4 0x10033f48 in -[AsyncSocket openStreamsAndReturnError:] (self=0x6ad8c30, _cmd=0x1005b800, errPtr=0x0)
#5 0x100338dc in -[AsyncSocket doAcceptWithSocket:] (self=0x398a40, _cmd=0x1005b8a0, newNative=21)
#6 0x100387e4 in -[AsyncSocket doCFSocketCallback:forSocket:withAddress:withData:] (self=0x398a40, _cmd=0x1005b4ac, type=kCFSocketAcceptCallBack, sock=0x399030, address=0x6ad9730, pData=0xf0080664)
#7 0x10038b68 in MyCFSocketCallback (sref=0x399030, type=kCFSocketAcceptCallBack, address=0x6ad9730, pData=0xf0080664, pInfo=0x398a40)
#8 0x90770944 in __CFSocketDoCallback ()
#9 0x90770668 in __CFSocketPerformV0 ()
#10 0x9075da5c in __CFRunLoopDoSources0 ()
#11 0x9075cf8c in __CFRunLoopRun ()
#12 0x9075ca0c in CFRunLoopRunSpecific ()
#13 0x928ea664 in -[NSRunLoop runMode:beforeDate:] ()
#14 0x9292f298 in -[NSRunLoop runUntilDate:] ()
#15 0x100394cc in -[WBLDefaultAdaptor runAcceptorThread] (self=0x38b280, _cmd=0x1005c354)
#16 0x928db6d4 in forkThreadForFunction ()
#17 0x9002b200 in _pthread_body ()



Has anybody observed a similar behavior with CFSocket does anybody know a way to get around this?
I am running 10.4.3.


Cheers

 Frank
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