Integrated: 8288752: Split thread implementation files

[Coleen Phillimore]

On Mon, 20 Jun 2022 15:49:44 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> This changes splits thread.hpp/cpp into javaThread, and threads files.
> 
> I left the commits intact to see better the progression of changes, but most files are include file changes.  The only tricky parts are that some files were included in thread.hpp, like mutexLocker.cpp, which has to be included in the files that need it.
> 
> I didn't update the copyrights to save diffs but will before integration.
> Also I won't integrate until after Dan's JDK 19 changes are merged into JDK 20.
> 
> Tested with tier1-4 on Oracle supported platforms and built on other platforms.

This pull request has now been integrated.

Changeset: 270cf67e
Author:    Coleen Phillimore <coleenp at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/270cf67e5ff19b082f710d52831f436dd144d883
Stats:     10905 lines in 383 files changed: 5518 ins; 5188 del; 199 mod

8288752: Split thread implementation files

Reviewed-by: dholmes, rehn, iklam

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PR: https://git.openjdk.org/jdk/pull/9218