环境变量来控制java.io.tmpdir？ [英] Environment variable to control java.io.tmpdir?

问题描述

我已经使用 TMP 环境变量来控制gcc写入它的临时文件的地方，但是似乎找不到java的 createTempFile API。

这样的环境变量是否存在？

在 Windows ，OpenJDK的 get_temp_directory（）函数使Win32 API调用到 GetTempPath（）;这是Windows上如何，Java反映了 TMP 环境变量的价值。

在 Linux 和 Solaris ，相同的 get_temp_directory（）函数返回静态值 / tmp / 。

我不知道实际的JDK6是否遵循这些确切的约定，但是按照每个列出的平台的行为，似乎都是这样。

I've used the TMP environment variable to control things like where gcc writes it's temporary files, but I can't seem to find an equivalent for java's createTempFile API.

Does such an environment variable exist?

解决方案

Hmmm -- since this is handled by the JVM, I delved into the OpenJDK VM source code a little bit, thinking that maybe what's done by OpenJDK mimics what's done by Java 6 and prior. It isn't reassuring that there's a way to do this other than on Windows.

On Windows, OpenJDK's get_temp_directory() function makes a Win32 API call to GetTempPath(); this is how on Windows, Java reflects the value of the TMP environment variable.

On Linux and Solaris, the same get_temp_directory() functions return a static value of /tmp/.

I don't know if the actual JDK6 follows these exact conventions, but by the behavior on each of the listed platforms, it seems like they do.

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