RFR: 8279488: ProcessBuilder inherits contextClassLoader when spawning a process reaper thread

[Alan Bateman]

On Tue, 18 Jan 2022 15:57:58 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> The thread factory used to create the process reaper threads unnecessarily inherits the callers thread context classloader.
> The result is retention of the class loader.
> 
> The thread factory used for the pool of process reaper threads is modified to use an InnocuousThread with a given stacksize.
> The test verifies that the process reaper threads have a null context classloader.

src/java.base/share/classes/jdk/internal/misc/InnocuousThread.java line 138:

> 136:         Thread t = new InnocuousThread(INNOCUOUSTHREADGROUP,
> 137:                 target, name, stackSize, loader);
> 138:         if (priority >= 0) {

Adding an addition newSystemThread method should be okay but can you fix the formatting/line lengths so it's a bit more inconsistent with the existing code.

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PR: https://git.openjdk.java.net/jdk/pull/7131