Summary

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() },