RFR: 8315242: G1: Fix -Wconversion warnings around GCDrainStackTargetSize [v2]

Wed Aug 30 09:49:32 UTC 2023

> Use more precise type and range for `GCDrainStackTargetSize`.
> 
> The change to `TASKQUEUE_SIZE` is there, because they are used in the same `MIN2`. (All uses expect `TASKQUEUE_SIZE` to be `uint` as well.)

Albert Mingkun Yang has updated the pull request incrementally with one additional commit since the last revision:

  review

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Changes:
  - all: https://git.openjdk.org/jdk/pull/15472/files
  - new: https://git.openjdk.org/jdk/pull/15472/files/483dfbec..12f8e961

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15472&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15472&range=00-01

  Stats: 3 lines in 2 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/15472.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15472/head:pull/15472

PR: https://git.openjdk.org/jdk/pull/15472