hang in CFStream code
hang in CFStream code
- Subject: hang in CFStream code
- From: James Matthews <email@hidden>
- Date: Fri, 25 Apr 2003 18:07:33 -0400
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
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