当打开进程终止时，文件将自动关闭 [英] Will the file get automatically closed, when opening process terminates

问题描述

我有一个进程，它使用file：open打开文件。这个文件会自动关闭，当我的进程将终止？

解决方案

是的。从 file：open / 2 的文档：

返回：

  {ok，IoDevice} 
  

该文件已在请求的模式下打开。

$ d

/ p>

IoDevice 真的是处理文件的进程的pid。此过程与最初打开文件的进程相关联。如果连接了 IoDevice 的任何进程终止，文件将被关闭，进程本身将被终止。

I have a process, which opens the file by using file:open. Will this file get automatically closed, when my process will terminate?

解决方案

Yes. From the documentation of file:open/2:

Returns:

{ok, IoDevice}

The file has been opened in the requested mode. IoDevice is a reference to the file.

[...]

IoDevice is really the pid of the process which handles the file. This process is linked to the process which originally opened the file. If any process to which the IoDevice is linked terminates, the file will be closed and the process itself will be terminated.

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