RFR: 8187809: UseMembar should be set true and deprecate the flag (original) (raw)

Robbin Ehn robbin.ehn at oracle.com
Thu Nov 9 06:46:15 UTC 2017

Thanks Serguei!

/Robbin

On 11/09/2017 01:50 AM, serguei.spitsyn at oracle.com wrote:

Hi Robbin,

Looks good. Thanks, Serguei On 11/8/17 12:52, Robbin Ehn wrote: Hi,

I forgot to say, UseMembar have been tested heavily on our supported platforms. This particular changeset just passed sanity test of tier 1-2. Thanks, Robbin On 2017-11-08 21:48, Robbin Ehn wrote: Hi all, please review!

This patch set the default technique for reading thread state to memory barriers instead of using the asymmetric dekker synchronization on all platforms. We also deprecate the option and starting the removal process. There have been discussion with people involved in all platforms and we will have another discussion before obsoleting the flag to make sure no issue have been found. More info in CSR: https://bugs.openjdk.java.net/browse/JDK-8187812 Bug: https://bugs.openjdk.java.net/browse/JDK-8187809 Code: http://cr.openjdk.java.net/~rehn/8187809/webrev/ Thanks, Robbin

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