Currently, any session can resume instrumentation breaks by sending
Debugger.resume command. That can lead to unreliable breakpoint
placement because sessions can resume too early.
The early resumption can happen in two ways:
- When we have two instrumented sessions, the first one to resume
can prevent the other one from setting its breakpoints
before executing the code.
- With one instrumented session and one without instrumentation
breakpoints, the uninstrumented session's Debugger.resume
command can resume the instrumentation pause before the
instrumented session can set its breakpoints.
This patch fixes both of these issues by changing the instrumentation
pause resumption logic to take note of the sessions that were notified
about the instrumentation breakpoints. The debugger will only resume
once all those sessions resume (or disconnect).
Bug: chromium:1354043
Change-Id: I84cf16b57187dbb40645b2f7ec2e08f0078539dc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4100466
Reviewed-by: Kim-Anh Tran <kimanh@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#84827}
4c3266841c