RFR: 8360522: G1: Flag constraint functions for G1SATBBufferSize and G1UpdateBufferSize are skipped during argument validation [v2]

[Ivan Walulya]

> Hi,
> 
> Please review this change to move constraint function execution for  G1SATBBufferSize and G1UpdateBufferSize  to AfterErgo. These functions rely on the UseG1GC flag to determine whether to apply checks. However, during the AtParse phase of argument handling, UseG1GC may not yet be processed, which causes the constraints to be skipped.
> 
> Testing:
> `java -XX:G1SATBBufferSize=0 -version`
> `G1SATBBufferSize (0) must be in range [1, 4294967295]`
> `Error: Could not create the Java Virtual Machine.`
> `Error: A fatal exception has occurred. Program will exit.`

Ivan Walulya has updated the pull request incrementally with one additional commit since the last revision:

  copyright year

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/25979/files
  - new: https://git.openjdk.org/jdk/pull/25979/files/e4efe8de..0ebf48bb

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25979&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25979&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25979.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25979/head:pull/25979

PR: https://git.openjdk.org/jdk/pull/25979