Re: ___spin_lock
Re: ___spin_lock
- Subject: Re: ___spin_lock
- From: Perry Winkel <email@hidden>
- Date: Wed, 13 Dec 2006 09:14:23 +0100
the space where for other threads i see the stack, is empty except for the phrase '___spin_lock'
i think you mean that xcode is not displaying all the infoavailable. will look into this 'sample' stuff. looks very interesting
thank you
still a bit puzzled though about this "spin lock" what is it?
On Dec 13, 2006, at 1:36 AM, Shawn Erickson wrote:
hi,
i have a multi threaded application (posix) and if a pause it because it doesn't seem 'to move on' although i see cpu activity, one of the threads only shows the info
___spin_lock
at the bottom of my debug window i see a message saying something about a gdb error: xcode could not locate source file cpu_capabilities.h (line 216)
i would like to know what my thread is doing, it obviously is hanging but why and what does this spin lock mean
can anyone please help?
Do you have a more complete thread backstrace? If not get a debug build of your application into that state and use something like sampe (man sample) to understand the call stack for the thread that is using the spin lock.
-Shawn -- met vriendelijke groeten perry winkel www.perry7.nl |
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