RFR: 8311542: Consolidate the native stack printing code [v3]
David Holmes
dholmes at openjdk.org
Mon Dec 9 00:17:18 UTC 2024
> We now print native stacks in a number of contexts, not just VMError reporting, and we have to try `os::platform_print_native_stack` else fall back to `VMError::print_native stack`.
>
> The refactoring adds a new `NativeStackPrinter` (NSP) helper class which can be constructed with some of the context information for the printing that will follow. This avoids the need for the print functions to have a large number of parameters. We have to expose both the top-level printing functionality and the "lower-level" frame-based stack walk as the error reporter needs access to that directly. To maintain the exact same format of output the NSP has to be aware of some error reporter usage requirements.
>
> I also had to expose a direct `frame` taking print function for the Debug.cpp `pns` case.
>
> Testing:
> - tiers 1 - 4
>
> Some frame management code was also moved from `VMError` to the `frame` class.
David Holmes has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains six additional commits since the last revision:
- Merge branch 'master' into 8311542-native-stack
- Change from frame& parameter back to frame to ensure we match pre-existing logic for copying frames
- Merge branch 'master' into 8311542-native-stack
- Remove unused constructor
- Missing file header
- 8311542: Consolidate the native stack printing code
-------------
Changes:
- all: https://git.openjdk.org/jdk/pull/22472/files
- new: https://git.openjdk.org/jdk/pull/22472/files/3228fb48..a65a1452
Webrevs:
- full: https://webrevs.openjdk.org/?repo=jdk&pr=22472&range=02
- incr: https://webrevs.openjdk.org/?repo=jdk&pr=22472&range=01-02
Stats: 1192 lines in 385 files changed: 443 ins; 627 del; 122 mod
Patch: https://git.openjdk.org/jdk/pull/22472.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/22472/head:pull/22472
PR: https://git.openjdk.org/jdk/pull/22472
More information about the hotspot-runtime-dev
mailing list