[jira] Resolved: (HARMONY-2889) [jdktools][jdwp] group identical Breakpoint, Step, MethodEntry, MethodExit events

["Gregory Shimansky (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HARMONY-2889?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gregory Shimansky resolved HARMONY-2889.
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    Resolution: Fixed

Patches are applied at 559093. The new test CombinedEventsTest stably fails on win32 (for some reason linux ia32 works) because VM fails on assertion in JVMTI single step code. The bug is probably not related to JDWP because single step shouldn't behave like this, but this test may be excluded if we don't fix the bug quickly. Please check that the patches are applied as expected.

> [jdktools][jdwp] group identical Breakpoint, Step, MethodEntry, MethodExit events
> ---------------------------------------------------------------------------------
>
>                 Key: HARMONY-2889
>                 URL: https://issues.apache.org/jira/browse/HARMONY-2889
>             Project: Harmony
>          Issue Type: Improvement
>          Components: JDK
>            Reporter: Ivan Popov
>            Assignee: Gregory Shimansky
>            Priority: Minor
>         Attachments: H2889_jdwp_agent.patch, H2889_jdwp_tests.patch
>
>
> According to JDWP spec Breakpoint, Step, MethodEntry, MethodExit events for the same location can be grouped into one event set. Without this feature user have to resume thread twice when, for example, stepping over a line with breakpoint.
> Current implementation of JDWP agent groups only identical events, it does not group different events into one event set. Implementing grouping for different JDWP events based on JVMTI callbacks requires rather sophisticated algorithm.

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