debugme.py

debugme.py

#! /data/project/py/Python-2.7.3/python
import signal
import os 
import time

path = "/data/project/py/Python-2.7.3/python"
masterpid = os.getpid()
breakonce = False

def sigint_handler(signum, frame):
    global breakonce
    if not breakonce: 
        breakonce = True
        if os.fork() == 0:  
            signal.signal(signal.SIGINT, signal.SIG_IGN)
            os.system("gdb %s %s" % (path, masterpid)) 
            print "gdb done, quit" 
            exit(0)
    else:
        os.wait3(os.WNOHANG)
        print "received SIGINT, quit."
        exit(0)

def gendata(data):
    for i in data:
        try:
            yield data 
        except GeneratorExit:
            yield data

def main():
    signal.signal(signal.SIGINT, sigint_handler)
    while True:
        time.sleep(1) 
        k =  gendata("nice1234")
        k.next() 
        try:
            k.close()
        except RuntimeError, err:
            #willbe generator ignored GeneratorExit
            print err

if __name__ == "__main__":
    main()