非阻塞文件读取 [英] Non-Blocking File Reads

问题描述

在java中是否有非阻塞文件读取API？如果不是，那么在C ++中构建一个并通过JNI从一个java应用程序调用它是明智的？

Is there a non-blocking file read API in java? If not would it be wise to build one in C++ and call it from a java app via JNI?

推荐答案

否， FileChannel code>不扩展 SelectableChannel 。

No, FileChannel does not extend SelectableChannel.

可能是因为并非所有的操作系​​统都支持它。

Probably because not all OSes support it.

Windows可以，特定的C ++库，并通过JNI调用它，但它是很多工作集成这个与 java.nio 。

Windows does, and in theory you could write a windows-specific C++ library and call it via JNI, but it is a lot of work to integrate this with java.nio.

我宁愿有一个工作线程将文件内容复制到 pipe ，并在管道的另一端进行非阻塞读取。

I would rather have a worker thread copy the file contents to a pipe and do non-blocking reads on the other end of the pipe.

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