8324960: Unsafe.allocateMemory documentation incorrect regarding zero return value

[bplb]

Align the specification of Unsafe.allocateMemory with its implementation and with the specification of Unsafe.reallocateMemory.

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change requires CSR request JDK-8325149 to be approved

Issues

• JDK-8324960: Unsafe.allocateMemory documentation incorrect regarding zero return value (Bug - P4)
• JDK-8325149: Unsafe.allocateMemory documentation incorrect regarding zero return value (CSR)

Reviewers

• Roger Riggs (@RogerRiggs - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/17643/head:pull/17643
$ git checkout pull/17643

Update a local copy of the PR:
$ git checkout pull/17643
$ git pull https://git.openjdk.org/jdk.git pull/17643/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 17643

View PR using the GUI difftool:
$ git pr show -t 17643

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/17643.diff

Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back bpb! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@bplb The following label will be automatically applied to this pull request:

• core-libs

When this pull request is ready to be reviewed, an "RFR" email will be sent to the corresponding mailing list. If you would like to change these labels, use the /label pull request command.

[mlbridge]

Webrevs

• 00: Full (3e81efa0)

[RogerRiggs]

lgtm

[openjdk]

@bplb This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8324960: Unsafe.allocateMemory documentation incorrect regarding zero return value

Reviewed-by: rriggs

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 68 new commits pushed to the master branch:

• 7777eb5: 8321931: memory_swap_current_in_bytes reports 0 as "unlimited"
• 51853f7: 8324724: Add Stub routines for FP16 conversions on aarch64
• c3adc61: 8325199: (zipfs) jdk/nio/zipfs/TestPosix.java failed 6 sub-tests
• 1993652: 8324983: race in CompileBroker::possibly_add_compiler_threads
• 55c1446: 8321468: Remove StringUTF16::equals
• 19e9220: 8325169: Reduce String::indexOf overheads
• 89e6a02: 8325064: C2 SuperWord: refactor construct_bb
• d395ac2: 8321373: Build should use LC_ALL=C.UTF-8
• 51671c0: 8323809: Serial: Refactor card table verification
• cdf918b: 8325134: Serial: Remove Generation::used_region
• ... and 58 more: https://git.openjdk.org/jdk/compare/f0024f585dcc1d8afe5808bf626efd8f514da070...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[bplb]

lgtm

Thanks @RogerRiggs.

[bplb]

CSR created.

[bplb]

/integrate

[openjdk]

Going to push as commit 209d87a.
Since your change was applied there have been 68 commits pushed to the master branch:

• 7777eb5: 8321931: memory_swap_current_in_bytes reports 0 as "unlimited"
• 51853f7: 8324724: Add Stub routines for FP16 conversions on aarch64
• c3adc61: 8325199: (zipfs) jdk/nio/zipfs/TestPosix.java failed 6 sub-tests
• 1993652: 8324983: race in CompileBroker::possibly_add_compiler_threads
• 55c1446: 8321468: Remove StringUTF16::equals
• 19e9220: 8325169: Reduce String::indexOf overheads
• 89e6a02: 8325064: C2 SuperWord: refactor construct_bb
• d395ac2: 8321373: Build should use LC_ALL=C.UTF-8
• 51671c0: 8323809: Serial: Refactor card table verification
• cdf918b: 8325134: Serial: Remove Generation::used_region
• ... and 58 more: https://git.openjdk.org/jdk/compare/f0024f585dcc1d8afe5808bf626efd8f514da070...master

Your commit was automatically rebased without conflicts.

[openjdk]

@bplb Pushed as commit 209d87a.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.