Integrated: 8258751: Improve ExceptionHandlerTable dump
Hao Sun
github.com+16932759+shqking at openjdk.java.net
Tue Jan 5 08:33:00 UTC 2021
On Wed, 23 Dec 2020 10:16:29 GMT, Hao Sun <github.com+16932759+shqking at openjdk.org> wrote:
> In addition to PC offset, print the real PC as well if available when
> dumping the ExceptionHandlerTable, as it's more convenient and readable
> for debugging or other activities.
>
> Note that compilers might dump the ExceptionHandlerTable before method
> registered. See functions emit_code_body() and fill_buffer(). However,
> real PC is not ready yet during these phases since the generated code is
> not installed. In such scenarios, the real PC is not printed.
>
> The example below shows how the dump information would be changed after
> applying this patch.
> BEFORE:
> ExceptionHandlerTable (size = 40 bytes)
> catch_pco = 392 (2 entries)
> bci 8 at scope depth 0 -> pco 184
> bci 19 at scope depth 0 -> pco 124
> AFTER:
> ExceptionHandlerTable (size = 40 bytes)
> catch_pco = 392 (pc=0x0000ffff818f13c8, 2 entries)
> bci 8 at scope depth 0 -> pco 184 (pc=0x0000ffff818f12f8)
> bci 19 at scope depth 0 -> pco 124 (pc=0x0000ffff818f12bc)
This pull request has now been integrated.
Changeset: 17d1645e
Author: Hao Sun <hao.sun at arm.com>
Committer: Ningsheng Jian <njian at openjdk.org>
URL: https://git.openjdk.java.net/jdk/commit/17d1645e
Stats: 21 lines in 3 files changed: 10 ins; 0 del; 11 mod
8258751: Improve ExceptionHandlerTable dump
Reviewed-by: thartmann, chagedorn, njian
-------------
PR: https://git.openjdk.java.net/jdk/pull/1877
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