[jdk11u-dev] RFR: 8287113: JFR: Periodic task thread uses period for method sampling events [v2]

[Jaroslav Bachorik]

> Mostly clean backport.
> The only conflict was due to the 'largeSize' field in `PlatformEventType` class which is not available in JDK 11.
> The conflict is resolved in a separate commit for easier review.

Jaroslav Bachorik has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'master' of github.com:openjdk/jdk11u-dev into jbachorik-backport-8122466f
 - Fix merge conflict
 - 8287113: JFR: Periodic task thread uses period for method sampling events
   
   Reviewed-by: jbachorik

-------------

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/1110/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/1110/files/c7952b69..3884cf7a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1110&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1110&range=00-01

  Stats: 8235 lines in 165 files changed: 2642 ins; 5223 del; 370 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1110.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1110/head:pull/1110

PR: https://git.openjdk.org/jdk11u-dev/pull/1110