[PYTHON/COMMON] Lock 클래스 : acquire/release 메소드 사용하기

icodebroker COMMON 2024-06-18

■ Lock 클래스의 acquire/release 메소드를 사용하는 방법을 보여준다.

▶ 예제 코드 (PY)


import threading
import time

count = 10
lock  = threading.Lock()

class Developer(threading.Thread):
    def __init__(self, name):
        threading.Thread.__init__(self)
        self.name  = name
        self.fixed = 0

    def run(self):
        global count
        while True:
            lock.acquire()
            if count > 0:
                count -= 1
                lock.release()
                self.fixed += 1
                time.sleep(0.1)
            else:
                lock.release()
                break

developerList = []

for name in ["스레드1", "스레드2", "스레드3"]:
    devloper = Developer(name)
    developerList.append(devloper)
    devloper.start()

for devloper in developerList:
    devloper.join()
    print(devloper.name, "fixed", devloper.fixed)

"""
스레드1 fixed 3
스레드2 fixed 4
스레드3 fixed 3
"""

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import threading

import time

count = 10

lock = threading.Lock()

class Developer(threading.Thread):

def __init__(self, name):

threading.Thread.__init__(self)

self.name = name

self.fixed = 0

def run(self):

global count

while True:

lock.acquire()

if count > 0:

count -= 1

lock.release()

self.fixed += 1

time.sleep(0.1)

else:

lock.release()

break

developerList = []

for name in ["스레드1", "스레드2", "스레드3"]:

devloper = Developer(name)

developerList.append(devloper)

devloper.start()

for devloper in developerList:

devloper.join()

print(devloper.name, "fixed", devloper.fixed)

"""

스레드1 fixed 3

스레드2 fixed 4

스레드3 fixed 3

"""