Question

I locked a file and I am trying to test how the system reacts to a locked file. I would like other processes to wait for the process to be released until they can require_once that file again and not to come back with an error.

问题不是我做的事,我似乎无法锁定档案,在另一个进程要求档案时也做一些等待,并且看到系统对该锁档案的反应。

I tried
1. sleep() which doesn t work, it halts the whole php engine.
2. I created a batch file that simply pauses until you hit enter. and used exec("cmd.exe /c START c:\1.bat");

因此,主角是,所有程序实际上都是任务的一个系列,这样,如果出于任何原因暂停使用,那么所有其他程序都是如此?

so How can I test if a file is locked ?
But of course if I am right, what s the point in locking the file whatsoever if other processes can t access it anyway?

Answer 1

$file = fopen( somefile.php ,  r+ );

while(!flock($file, LOCK_SH | LOCK_NB)) {
    sleep(1);
}

require  somefile.php ;

由于锁 t似乎在营地内工作,你需要检查是否有锁。

Answer 2

the require_once is handled by php. Because of that, you cannot simply acquire a lock for it AFAIK. If you look at file locking, refer to this
It states that you should use locks whenever you try to access the locked file.

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