如何在 Perl 中刷新文件? [英] How do I flush a file in Perl?

问题描述

我有 Perl 脚本，它每 3 秒向现有文件追加一个新行.此外，还有一个 C++ 应用程序可以从该文件中读取数据.

I have Perl script which appends a new line to the existing file every 3 seconds. Also, there is a C++ application which reads from that file.

问题是应用程序在脚本完成并关闭文件句柄后开始读取文件.为了避免这种情况，我想在每行追加后刷新.我该怎么做?

The problem is that the application begins to read the file after the script is done and file handle is closed. To avoid this I want to flush after each line append. How can I do that?

推荐答案

尝试:

use IO::Handle;
$fh->autoflush;

这实际上是在 一个早期问题中发布的一种自动刷新方式我的，它询问了普遍接受的实现这一目标的坏方法:-)

This was actually posted as a way of auto-flushing in an early question of mine, which asked about the universally accepted bad way of achieving this :-)

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