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58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
import sys, time, threading, thread, os, traceback, threadframe, pprint
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# daemon thread that spouts Monty Pythonesque nonsense
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class T(threading.Thread):
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def run(self):
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while 1:
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time.sleep(1)
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print '[%d] Spam spam spam spam. Lovely spam! Wonderful spam!' % ( thread.get_ident(), )
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# thread that cause a deliberate deadlock with itself
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U_lock = threading.Lock()
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class U(threading.Thread):
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def run(self):
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U_lock.acquire()
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U_lock.acquire()
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# thread that will exit after the thread frames are extracted but before
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# they are printed
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V_event = threading.Event()
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class V(threading.Thread):
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def run(self):
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V_event.clear()
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V_event.wait()
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print 'ident of main thread is: %d' % (thread.get_ident(),)
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print
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print 'launching daemon thread...',
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T().start()
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print 'done'
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print 'launching self-deadlocking thread...',
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U().start()
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print 'done'
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print 'launching thread that will die before the end...',
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v = V()
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v.start()
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print 'done'
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time.sleep(5)
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# Python 2.2 does not support threadframe.dict()
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if sys.hexversion < 0x02030000:
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frames = threadframe.threadframe()
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else:
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frames = threadframe.dict()
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# signal the thread V to die, then wait for it to oblige
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V_event.set()
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v.join()
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if sys.hexversion < 0x02030000:
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for frame in frames:
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print '-' * 72
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print 'frame ref count = %d' % sys.getrefcount(frame)
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traceback.print_stack(frame)
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else:
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for thread_id, frame in frames.iteritems():
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print '-' * 72
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print '[%s] %d' % (thread_id, sys.getrefcount(frame))
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traceback.print_stack(frame)
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os._exit(0)
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