当有多个文件等待锁时，flock 是否维护一个队列？
Does flock maintain a queue when there are multiple files waiting for a lock?
如果有人能帮助我了解 flock 的功能，那就太好了。可以说我有以下情况：
process A opens the lock file, finds it does not exists, so it creates it.
process A acquires the lock
process B opens the lock (finds it already exists)
process B tries to acquire the lock but has to wait-- Wait 1
process C opens the lock (finds it already exists)
process C tries to acquire the lock but has to wait-- Wait 2
process D opens the lock (finds it already exists)
process D tries to acquire the lock but has to wait-- Wait 3
基于上面的场景，有3个进程在等待获取锁。我的问题是，一旦进程 A 释放了锁，等待作业是如何处理的？是先进先出吗？
谢谢，
凯文
我试着用一个有效的示例脚本测试这个场景，我发现等待的作业是随机处理的。
如果有人能帮助我了解 flock 的功能，那就太好了。可以说我有以下情况：
process A opens the lock file, finds it does not exists, so it creates it.
process A acquires the lock
process B opens the lock (finds it already exists)
process B tries to acquire the lock but has to wait-- Wait 1
process C opens the lock (finds it already exists)
process C tries to acquire the lock but has to wait-- Wait 2
process D opens the lock (finds it already exists)
process D tries to acquire the lock but has to wait-- Wait 3
基于上面的场景，有3个进程在等待获取锁。我的问题是，一旦进程 A 释放了锁，等待作业是如何处理的？是先进先出吗？
谢谢， 凯文
我试着用一个有效的示例脚本测试这个场景，我发现等待的作业是随机处理的。