import threading
import traceback

def say_what():
    print "what"
    
def say_hello():
    print '-'*200
    print "hello"
    say_what()
def profiler(frame, event, args):
    fname, lineno, func, _  = traceback.extract_stack(f=frame)[-1]
    if (fname == '/usr/lib/python2.7/threading.py' and
        lineno == 752 and
        func == 'run' and
        event == 'call'):
        print '-'*20 
        print threading.current_thread().name
        traceback.print_stack(f=frame)
        print args
        print '+'*20 

    if (fname == '/usr/lib/python2.7/threading.py' and
        lineno == 874 and
        func == '__stop' and
        event == 'return'):
        print '*'*20 
        print threading.current_thread().name
        traceback.print_stack(f=frame)
        print args
        print '/'*20 


def main():
    import sys
    threading.setprofile(profiler)
    t = threading.Thread(target=say_hello)
    
    t.start()
    t.join()
    # import time
    # time.sleep(1)
    print "done"