Integrated: Add an option to stream region sampling data to a file

[William Kemper]

On Thu, 7 Oct 2021 15:34:08 GMT, William Kemper <wkemper at openjdk.org> wrote:

> This change adds two command line options to enable and configure a feature that has Shenandoah stream region sampling data to disk. These changes are complemented by changes in the [Shenandoah Visualizer](https://github.com/openjdk/shenandoah-visualizer) project to load and replay the logged region sampling data.

This pull request has now been integrated.

Changeset: d59d18ef
Author:    William Kemper <wkemper at openjdk.org>
URL:       https://git.openjdk.java.net/shenandoah/commit/d59d18efd0f5ecb2790c59793afb878383ca61e2
Stats:     420 lines in 8 files changed: 395 ins; 20 del; 5 mod

Add an option to stream region sampling data to a file

Co-authored-by: Christian Young <cyyoungm at amazon.com>
Reviewed-by: rkennke

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PR: https://git.openjdk.java.net/shenandoah/pull/82