RFR (S): 8247292 and 8247289: obsolete BSD command-line flags

[Daniel D. Daugherty]

On 6/15/20 9:03 AM, David Holmes wrote:
> A two for the price of one special offer ;-)
>
> Two unused flags (copied from the Linux port) are made obsolete in JDK 
> 16 and ready for expiration in JDK 17.
>
> 8247289: Obsolete unused UseBsdPosixThreadCPUClocks
> https://bugs.openjdk.java.net/browse/JDK-8247289
> Contributed by: Christoph Dreis <christoph.dreis at freenet.de>
>
> This flag is only declared in globals_bsd.hpp.
>
> 8247292: Obsolete unused UseOprofile flag on BSD
> https://bugs.openjdk.java.net/browse/JDK-8247292
>
> This is "used" in bsd_wrap_code, which is itself an unused copy of 
> linux_wrap_code.
>
> combined webrev:
>
> http://cr.openjdk.java.net/~dholmes/8247292-8247289/webrev/

src/hotspot/os/bsd/globals_bsd.hpp
     No comments.

src/hotspot/os/bsd/os_bsd.cpp
     No comments.

src/hotspot/share/runtime/arguments.cpp
     No comments.

Thumbs up.

Dan


>
> Both issues have approved CSR requests.
>
> Testing:
>  - builds in tiers 1-3
>  - sanity testing of tiers 1-3
>  - manual checking that the flags report as obsolete:
>
> > ./jdk-16/fastdebug/bin/java -XX:+UseOprofile -version
> Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option 
> UseOprofile; support was removed in 16.0
> java version "16-internal" 2021-03-16
> Java(TM) SE Runtime Environment (fastdebug build 
> 16-internal+0-2020-06-15-1146345.david.holmes.jdk-dev)
> Java HotSpot(TM) 64-Bit Server VM (fastdebug build 
> 16-internal+0-2020-06-15-1146345.david.holmes.jdk-dev, mixed mode, 
> sharing)
> > ./jdk-16/fastdebug/bin/java -XX:+UseBsdPosixThreadCPUClocks -version
> Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option 
> UseBsdPosixThreadCPUClocks; support was removed in 16.0
> java version "16-internal" 2021-03-16
> Java(TM) SE Runtime Environment (fastdebug build 
> 16-internal+0-2020-06-15-1146345.david.holmes.jdk-dev)
> Java HotSpot(TM) 64-Bit Server VM (fastdebug build 
> 16-internal+0-2020-06-15-1146345.david.holmes.jdk-dev, mixed mode, 
> sharing)
>
>
> Thanks,
> David
> -----