如何在python中与forked进程共享变量？

from multiprocessing import Process, Value

def increment(counter):
    counter.value += 1

if __name__ == '__main__':
    counter = Value('i', 0)  # 创建一个整数类型的共享变量
    processes = []
    
    for _ in range(5):
        p = Process(target=increment, args=(counter,))
        p.start()
        processes.append(p)
    
    for p in processes:
        p.join()
    
    print(counter.value)  # 输出共享变量的值

from multiprocessing import Process, Queue

def increment(queue):
    value = queue.get()
    queue.put(value + 1)

if __name__ == '__main__':
    queue = Queue()
    queue.put(0)  # 初始值放入队列中
    processes = []
    
    for _ in range(5):
        p = Process(target=increment, args=(queue,))
        p.start()
        processes.append(p)
    
    for p in processes:
        p.join()
    
    print(queue.get())  # 输出共享变量的值