RFR: 8291060: OPEN_MAX is no longer the max limit on macOS >= 10.6 for RLIMIT_NOFILE [v2]

[Gerard Ziemski]

> On macOS we are currently using setrlimit(RLIMIT_NOFILE, OPEN_MAX) for MaxFDLimit (it's ON by default), but we can go higher than that. 
> 
> My own testing on macOS 12.3.1 reveals that we can ask for setrlimit(RLIMIT_NOFILE, RLIM_INFINITY), though in reality we will get back 32765, which is still more than OPEN_MAX (10240)

Gerard Ziemski has updated the pull request incrementally with one additional commit since the last revision:

  implement David's feedback

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/9650/files
  - new: https://git.openjdk.org/jdk/pull/9650/files/7c5a4c4f..1338eb4b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9650&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9650&range=00-01

  Stats: 7 lines in 1 file changed: 2 ins; 2 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/9650.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9650/head:pull/9650

PR: https://git.openjdk.org/jdk/pull/9650