[HARMONY-2889] [jdktools][jdwp] group identical Breakpoint, Step, MethodEntry, MethodExit events

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Component/s: JDK
• Patch Info: Patch Available
• Estimated Complexity: Moderate
• Assignee: Gregory Shimansky
• Reporter: Ivan Popov
• Created: 27/Dec/06 10:10
• Updated: 02/May/13 02:29
• Resolved: 24/Jul/07 16:23

Description

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.

Issue Links

• blocks: HARMONY-4108 [M2] umbrella task for 98% pass rate of Stress tests - HARMONY-3536; no regression since M1
• depends upon: HARMONY-2892 [jdktools][jdwp] Support on-demand debugger attach in JDWP agent
• is depended upon by: HARMONY-4388 [drlvm][jvmti] DRLVM crashes in jvmti_start_single_step_in_virtual_method(), file jvmti_step.cpp, line 504: assertion "vtable"
• is depended upon by: HARMONY-4389 [drlvm][jvmti] Thread.isAlive() is false in THREAD_STRAT event callback
• is depended upon by: HARMONY-2891 [jdktools][jdwp] generate ClassUnload event