[Twisted-Python] 2 threads questions

[Jonathan Vanasco]

On Mar 27, 2007, at 12:30 PM, Jean-Paul Calderone wrote:

>
> Python 2.5 includes sys._current_frames() which returns a mapping  
> from thread
> identifiers to the frame objects which you might be able to use to  
> learn what
> is going on.  You can call this from your manhole prompt when you  
> notice the
> system to have hung.


Great!  Thanks.

Still working on debugging this, but for other people who need to  
jump into a manhole for something like this in the future  -- the  
following works well.



=======

import sys
import traceback

def formatTraceback ( frameId , frameObj ):
	traceback_lines= traceback.format_stack( frameObj )
	if not len(traceback_lines):
		return
	print ""
	print  
"----------------------------------------------------------------------- 
-----------"
	print ">> --- %s | %s ===================================" %  
( frameId , frameObj )
	print "".join(traceback_lines)
	print "<< --- %s | %s ===================================" %  
( frameId , frameObj )
	print ""

def printCurrentStack():
	frames= sys._current_frames()
	for frameId in frames:
		frameObj= frames[frameId]
		formatTraceback( frameId , frameObj )

printCurrentStack()








// Jonathan Vanasco

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