java process类调用Python程序，并且发送singal

java code

public static void main(String[] args) throws IOException, InterruptedException {
   ProcessBuilder pb=new ProcessBuilder("python","test.py");
   File log = new File("log");
   pb.redirectErrorStream(true);
   pb.redirectOutput(ProcessBuilder.Redirect.appendTo(log));
   Process p=pb.start();
   Thread.sleep(100);
   p.destroy();
}

python code

import os
import signal
receive_times = 0

def handler(signalnum, frame):
    global receive_times
    print(u"received", signalnum, frame, receive_times)
    receive_times += 1
    if receive_times > 0:
        exit(0)  
def main():
    signal.signal(signal.SIGTERM, handler)
    while True:
        print("pid:", os.getpid())
if __name__ == '__main__':
    main()

result:

('pid:', 16622)
('pid:', 16622)
('pid:', 16622)
('pid:', 16622)
(u'received', 15, <frame object at 0x7f49dd25a3d0>, 1)

shell

#!/bin/bash
_term(){
 echo "Caught SIGTERM signal!"
 kill -TERM "$child" 2>/dev/null
}
trap _term SIGTERM
echo "Doing some initial work...";
docker run --rm --pid=host test1 &
child=$!
echo "$child"
wait "$child"
echo "Doing some initial work 2 ..."
docker run --rm --pid=host test2 &

child=$!
echo "$child"
wait "$child"