Bug ID: JDK-8074026 Deprecated UseBoundThreads, DefaultThreadPriority and NoYieldsInMicrolock VM options still defined in globals.hpp

Type: Bug
Component: hotspot
Sub-Component: runtime
Affected Version: 9

Priority: P3
Status: Resolved
Resolution: Fixed

Submitted: 2015-02-27
Updated: 2015-06-03
Resolved: 2015-04-21

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JDK 9
9 b64Fixed

Fix for JDK-8038473 "Remove support for old T1 libthread" deprecate UseBoundThreads, DefaultThreadPriority and NoYieldsInMicrolock VM options. But these options are still defined in hotspot/src/share/vm/runtime/globals.hpp file and accepted by JVM(instead of printing warning about deprecation).

Also, UseBoundThreads option is used in Arguments::parse_each_vm_init_arg function in hotspot/src/share/vm/runtime/arguments.cpp:
    } else if (match_option(option, "-Xboundthreads")) {
      // Bind user level threads to kernel threads (Solaris only)
      FLAG_SET_CMDLINE(bool, UseBoundThreads, true);

So, possible, "-Xboundthreads" also can be deprecated because it used only to set deprecated "UseBoundThreads" to true.

This bug can be resolved only after JDK-8073989, because otherwise "test/runtime/CommandLine/ObsoleteFlagErrorMessage.java" test will fail. This test will be corrected by JDK-8073989.

12-03-2015

Blocks :	JDK-8073989 - Deprecated integer options are considered as invalid instead of deprecated in Java 9
Relates :	JDK-8038473 - Remove support for old T1 libthread