RFR (S): 8247292 and 8247289: obsolete BSD command-line flags
David Holmes
david.holmes at oracle.com
Mon Jun 15 13:03:37 UTC 2020
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/
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
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