Mailing Lists: Apple Mailing Lists
 Image of Mac OS face in stamp
hang in CFStream code
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

hang in CFStream code

I have a Carbon test program that opens a CFReadStream and a CFWriteStream on the Unix domain socket it shares with a child process -- it uses a class similar to the NSTask class in Cocoa. It works a few times (e.g. I can launch "/bin/ls" and read the output) but eventually hangs: the child process is launched and the CFStreams are opened but no callbacks come through. Here's the stack crawl while it's hung:

#0 0x620f9d28 in clock_sleep_trap ()
#1 0x620f9904 in nanosleep (requested_time=0xbfffe920, remaining_time=0x0) at /SourceCache/Libc/Libc-262/gen/nanosleep.c:51
#2 0x901c2140 in socketCallBack ()
#3 0x90162ce8 in __CFSocketPerform ()
#4 0x90149534 in __CFRunLoopDoSources0 ()
#5 0x90148918 in __CFRunLoopRun ()
#6 0x90180fe4 in CFRunLoopRunSpecific ()
#7 0x969a3160 in RunCurrentEventLoopInMode ()
#8 0x969b3090 in ReceiveNextEventCommon ()
#9 0x969f2074 in _AcquireNextEvent ()
#10 0x96ab3ff4 in RunApplicationEventLoop ()
#11 0x00003b00 in SimpleHello::Run() ()
#12 0x00004198 in main ()
#13 0x00003550 in _start ()
#14 0x000033d0 in start ()

This is on 10.2.4, with the debug version of libSystem providing the details about nanosleep.

What's the next step I should take to figure out why the code is hanging? Is there a debug version of the CFNetwork framework that would provide more information in the backtrace?

Thanks,
--
Jim Matthews
Fetch Softworks
http://fetchsoftworks.com
_______________________________________________
macnetworkprog mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/macnetworkprog
Do not post admin requests to the list. They will be ignored.


Visit the Apple Store online or at retail locations.
1-800-MY-APPLE

Contact Apple | Terms of Use | Privacy Policy

Copyright © 2011 Apple Inc. All rights reserved.