[jdk11u-dev] RFR: 8298129: Let checkpoint event sizes grow beyond u4 limit [v2]

[Ekaterina Vergizova]

> I'd like to backport JDK-8298129 to 11u.
> It fixes corrupted jfr dumps that can be generated for applications with a large stack trace pool or string pool. Such dumps can not be read by jfr tool or JMC.
> 
> 17u patch doesn't apply cleanly, minor modifications required:
> - jfrCheckpointManager.cpp: is_flushpoint and flushpoint_offset were replaced by checkpoint_type and checkpoint_type_offset by JDK-8226511 that is not backported to 11u. Adapted the changes for flushpoint. Additionally nullptr was replaced with NULL since JDK-8246032 is not backported to 11u
> - jfrEncoders.hpp, jfrWriterHost.hpp, jfrWriterHost.inline.hpp: copyright years, minor context difference due to #endif comment, reapplied manually
> - ChunkParser.java: minor context difference for the second hunk since JDK-8226511 is not backported to 11u, reapplied manually
> 
> Tested with tier1 and jdk/jfr tests.

Ekaterina Vergizova 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 two additional commits since the last revision:

 - Merge branch 'openjdk:master' into backport-8298129
 - Backport ea108f504ccb63fc9651e804e3bbba1c108dcead

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

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/1708/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/1708/files/d79564dc..f3df3e0b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1708&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1708&range=00-01

  Stats: 9162 lines in 305 files changed: 6215 ins; 1332 del; 1615 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1708.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1708/head:pull/1708

PR: https://git.openjdk.org/jdk11u-dev/pull/1708