#!/usr/bin/python
# -*- coding: utf-8 -*-

import logging
import time

import threading


#import stacktracer as strace

db_lock = threading.RLock()

class MyDatabase(object):
    # Python 2
    def __unicode__(self):
        time.sleep(8)
        with db_lock:
            print("I will never have the lock")
        return "42"

    # Python 3
    def __str__(self):
        time.sleep(8)
        with db_lock:
            print("I will never have the lock")
        return "42"

    def log_pid(self):
        with db_lock:
            time.sleep(2)
            logging.warning(u"my_db pid is: %s", u"1234")

my_db = MyDatabase()


def first_thread():
    print("1st started!")
    logging.warning(u"My slow pid is: %s", my_db)
    print("1st finished")
    return 0

def second_thread():
    print("2nd started!")
    my_db.log_pid()
    print("2nd finished")
    return 0


def main():
    print("Start")
    # log on the console
    logging.basicConfig(level = logging.DEBUG)

    th1 = threading.Thread(target=first_thread, name='first-thread')
    th1.start()

    th2 = threading.Thread(target=second_thread, name='second-thread')
    th2.start()

    print("All threads launched")
    th1.join()
    th2.join()

    print("End")

if __name__ == "__main__":
    #strace.trace_start("testLOCKtrace.txt", interval=10, auto=True)
    main()
    #strace.trace_stop()