Bug ID: JDK-8233842 CSR for JEP 366: Deprecate the ParallelScavenge + SerialOld GC Combination

Type: CSR
Component: hotspot
Sub-Component: gc

Priority: P4
Status: Closed
Resolution: Approved
Fix Versions: 14

Submitted: 2019-11-08
Updated: 2019-11-12
Resolved: 2019-11-12

Summary
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Deprecate the command line option `UseParallelOldGC`.

Problem
-------

For JDK-8229492: JEP 366: Deprecate the ParallelScavenge + SerialOld GC Combination we deprecate the `UseParallelOldGC` option to prepare for potential future removal.

Solution
--------

Deprecate the `UseParallelOldGC` command line option.

Specification
-------------

       --- old/src/hotspot/share/runtime/arguments.cpp	2019-11-05 11:03:18.881862069 +0100
       +++ new/src/hotspot/share/runtime/arguments.cpp	2019-11-05 11:03:18.541851522 +0100
       @@ -528,6 +528,7 @@
       { "CompactFields",                JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
       { "MonitorBound",                 JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
       { "G1RSetScanBlockSize",          JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
    +  { "UseParallelOldGC",             JDK_Version::jdk(14), JDK_Version::jdk(15), JDK_Version::jdk(16) },
     
       // --- Deprecated alias flags (see also aliased_jvm_flags) - sorted by obsolete_in then expired_in:
       { "DefaultMaxRAMFraction",        JDK_Version::jdk(8),  JDK_Version::undefined(), JDK_Version::undefined() },

Approving for JDK 14.

12-11-2019