RFR: 8280178: Remove os:: API's that just call system API's

Wed Jan 19 19:19:25 UTC 2022

Please review this change to remove unneeded definitions for close(), read(), and socket() from class os in os.hpp.  The definitions aren't needed because, for all platforms, these functions just call the host operating system versions.

The fix was tested with Mach5 tiers 1-2 on Linux, Mac OS, and Windows, and Mach5 tiers 3-5 on Linux x64.

Thanks, Harold

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Commit messages:
 - 8280178: Remove os:: API's that just call system API's

Changes: https://git.openjdk.java.net/jdk/pull/7145/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7145&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8280178
  Stats: 68 lines in 19 files changed: 0 ins; 23 del; 45 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7145.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7145/head:pull/7145

PR: https://git.openjdk.java.net/jdk/pull/7145