• Simon Zünd's avatar
    [inspector] Add 'canBeRestarted' flag to CallFrames when debugger pauses · ec41a70e
    Simon Zünd authored
    Doc: https://bit.ly/revive-restart-frame
    Context: https://crrev.com/c/3582395 (whole feature)
    
    This CL adds a new optional flag `canBeRestarted` to every call frame
    in Debugger.paused events. As the name suggests, the flag indicates
    whether we can restart a particular frame through Debugger.restartFrame
    once implemented.
    
    We are not able to safely restart all frames:
      * We don't support WASM frames
      * We don't support frames where resumable functions (async fns,
        generators) and embedder C++ frames are between the top-most
        frame and the to-be-restarted frame.
    
    Note that from a CDP perspective the flag doesn't actually guarantee
    a successful restart. CDP clients can issue
    CDP commands between the Debugger.paused event and before a user
    decides to restart a frame, which can potentially mess
    with the stack.
    
    The `canBeRestarted` flag tests are folded into the
    Debugger.restartFrame tests. As the feature is not yet fully
    implemented we short-circuit most of the tests for now and only
    run them up until the first Debugger.restartFrame call fails
    (except "fails-for-resumables.js").
    This means the tests exercise the `canBeRestarted` flag, but not
    the restarting functionality itself.
    
    R=bmeurer@chromium.org, kimanh@chromium.org
    
    Bug: chromium:1303521
    Change-Id: I01ab46dc3557ab8383960969fbe03e00604cc5e2
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3596160Reviewed-by: 's avatarBenedikt Meurer <bmeurer@chromium.org>
    Reviewed-by: 's avatarKim-Anh Tran <kimanh@chromium.org>
    Commit-Queue: Simon Zünd <szuend@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#80046}
    ec41a70e
Name
Last commit
Last update
.github Loading commit data...
bazel Loading commit data...
build_overrides Loading commit data...
custom_deps Loading commit data...
docs Loading commit data...
gni Loading commit data...
include Loading commit data...
infra Loading commit data...
samples Loading commit data...
src Loading commit data...
test Loading commit data...
testing Loading commit data...
third_party Loading commit data...
tools Loading commit data...
.bazelrc Loading commit data...
.clang-format Loading commit data...
.clang-tidy Loading commit data...
.editorconfig Loading commit data...
.flake8 Loading commit data...
.git-blame-ignore-revs Loading commit data...
.gitattributes Loading commit data...
.gitignore Loading commit data...
.gn Loading commit data...
.mailmap Loading commit data...
.style.yapf Loading commit data...
.vpython Loading commit data...
.vpython3 Loading commit data...
.ycm_extra_conf.py Loading commit data...
AUTHORS Loading commit data...
BUILD.bazel Loading commit data...
BUILD.gn Loading commit data...
CODE_OF_CONDUCT.md Loading commit data...
COMMON_OWNERS Loading commit data...
DEPS Loading commit data...
DIR_METADATA Loading commit data...
ENG_REVIEW_OWNERS Loading commit data...
INFRA_OWNERS Loading commit data...
INTL_OWNERS Loading commit data...
LICENSE Loading commit data...
LICENSE.fdlibm Loading commit data...
LICENSE.strongtalk Loading commit data...
LICENSE.v8 Loading commit data...
LOONG_OWNERS Loading commit data...
MIPS_OWNERS Loading commit data...
OWNERS Loading commit data...
PPC_OWNERS Loading commit data...
PRESUBMIT.py Loading commit data...
README.md Loading commit data...
RISCV_OWNERS Loading commit data...
S390_OWNERS Loading commit data...
WATCHLISTS Loading commit data...
WORKSPACE Loading commit data...
codereview.settings Loading commit data...