How do I get the same thread id as supplied by 'ps -AL' in LWPcolumn

[Simpson, John]

Ignore this.  It was caused by a home-grown thread abstraction always
referring to the 'main' thread.  It looks like this is the cause of the
other faults I've been having as well.
 
Cheers 

________________________________

From: fedora-list-bounces at redhat.com
[mailto:fedora-list-bounces at redhat.com] On Behalf Of Simpson, John
Sent: 13 November 2007 09:52
To: fedora-list at redhat.com
Cc: Pyle, Andy
Subject: How do I get the same thread id as supplied by 'ps -AL' in
LWPcolumn 


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Hi
 
I'm running 2.6.18-1.2786.fc6 and I'm trying to debug an extravagantly
threaded program (sixteen separate threads, not my code).  
 
The problem I've got is that although each of the threads is uniquely
identifiable using 'ps -AL' or '/proc/PID/task' (information which is
also available on creation and destruction to gdb) I cannot get the same
identifiers programmatically.  I've tried pthread_self() and
syscall(_NR_gettid) but they just return the identifier of the
initiating thread rather than the thread I'm calling them from.  This
makes debugging extremely difficult, for example I can see from 'ps -AL'
that some of the threads are doing the <defunct> zombie thing, but I
don't know which ones they are.
 
Any suggestions
 
Thanks
 
John
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