January 2021 - core-libs-dev

[jdk16] RFR: 8259213: Vector conversion with part > 0 is not getting intrinsic implementation
by Sandhya Viswanathan 05 Jan '21

05 Jan '21

Vector conversion with part > 0 is implemented using slice(origin, vector) instead of slice(origin). The slice(origin) has intrinsic implementation whereas slice(origin, vector) doesn’t. Slice(origin) is written using vector API methods like rearrange and blend which all have intrinsic implementations. Also, VectorIntrinsics.VECTOR_ACCESS_OOB_CHECK code is missing from rearrange checkIndexes. Please review this patch which fixes the above issue. Best Regards, Sandhya ------------- Commit messages: - 8259213: Vector conversion with part > 0 is not getting intrinsic implementation Changes: https://git.openjdk.java.net/jdk16/pull/79/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk16&pr=79&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8259213 Stats: 8 lines in 2 files changed: 6 ins; 0 del; 2 mod Patch: https://git.openjdk.java.net/jdk16/pull/79.diff Fetch: git fetch https://git.openjdk.java.net/jdk16 pull/79/head:pull/79 PR: https://git.openjdk.java.net/jdk16/pull/79

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RFR: 8259021 avoid double racy reads from non-volatile fields of SharedSecrets
by Peter Levart 05 Jan '21

05 Jan '21

See: https://bugs.openjdk.java.net/browse/JDK-8259021 See also discussion in thread: https://mail.openjdk.java.net/pipermail/core-libs-dev/2020-December/072798.… ------------- Commit messages: - 8259021 avoid double racy reads from non-volatile fields of SharedSecrets Changes: https://git.openjdk.java.net/jdk/pull/1914/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1914&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8259021 Stats: 96 lines in 1 file changed: 50 ins; 0 del; 46 mod Patch: https://git.openjdk.java.net/jdk/pull/1914.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/1914/head:pull/1914 PR: https://git.openjdk.java.net/jdk/pull/1914

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[jdk16] RFR: 8259027: NullPointerException in makeMappedSegment due to NULL Unmapper when length of segment is 0
by Maurizio Cimadamore 05 Jan '21

05 Jan '21

When the size of the memory map is zero, FileChannelImpl returns a `null` Unmapper - this creates issues to the mapped memory segment implementation. To fix, I've created an empty mapped segment class which is initialized to sensible defaults, and whose implenentation of force/load etc. do nothing. We already had a test for this condition - but the test was missing the `@Test` annotation, so it was not run! I've now beefed up the test a bit to make sure that mapped segment operations do not throw. ------------- Commit messages: - Create subclass for empty mappings - Return dummy mapping when mapping length is zero Changes: https://git.openjdk.java.net/jdk16/pull/83/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk16&pr=83&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8259027 Stats: 46 lines in 2 files changed: 40 ins; 2 del; 4 mod Patch: https://git.openjdk.java.net/jdk16/pull/83.diff Fetch: git fetch https://git.openjdk.java.net/jdk16 pull/83/head:pull/83 PR: https://git.openjdk.java.net/jdk16/pull/83

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RFR: 8066622 8066637: remove deprecated using java.io.File.toURL() in internal classes
by Sebastian Ritter 05 Jan '21

05 Jan '21

In result of Javadoc to do not use java.io.File.toURL() Change use java.io.File.toURL().toURI() instead. ------------- Commit messages: - in result of Javadoc to java.io.File.toURL do use internal java.io.File.toURL().toURI instead Changes: https://git.openjdk.java.net/jdk/pull/1108/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1108&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8066622 Stats: 3 lines in 2 files changed: 0 ins; 0 del; 3 mod Patch: https://git.openjdk.java.net/jdk/pull/1108.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/1108/head:pull/1108 PR: https://git.openjdk.java.net/jdk/pull/1108

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Re: RFR: 8258878: (tz) Upgrade time-zone data to tzdata2020e
by Erik Joelsson 04 Jan '21

04 Jan '21

On Mon, 4 Jan 2021 18:11:05 GMT, Kiran Sidhartha Ravikumar <kravikumar(a)openjdk.org> wrote: > Hi Guys, > > Please review the integration of tzdata2020e to JDK. > > Details regarding the change can be viewed at - https://mm.icann.org/pipermail/tz-announce/2020-December/000063.html > Bug: https://bugs.openjdk.java.net/browse/JDK-8258878 > > Most of the changes are about correcting past timestamps and Australia/Currie timezone is removed. > > Regression Tests pass along with JCK. > > Please let me know if the changes are good to push. > > Thanks, > Kiran Marked as reviewed by erikj (Reviewer). ------------- PR: https://git.openjdk.java.net/jdk/pull/1937

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