commit | 2a4d05dea58d1a561f880e523abff7188095d69e | [log] [tgz] |
---|---|---|
author | Caio Lima <clima@igalia.com> | Wed Aug 04 07:10:31 2021 |
committer | Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> | Wed Aug 04 07:10:31 2021 |
tree | d8ed1c5976aee5cdf78b1c970c83f2e3d386add7 | |
parent | f270241c382d536847981b5d0b3dd61901d4d89b [diff] |
debugger statement is ignored in iframes removed from the document This patch is conditioning the message `ContextWillBeDestroyed` to `MainThreadDebugger` during context disposal to happen only if the reason we are disposing the context is not `ClearForClose`. The reason for such change is that the context of a detached iframe can still be used to execute code via iframe's `eval` and it would be useful to debug such code. `ContextWillBeDestroyed` sends V8Inspector a `contextDestroyed` message where the inspector disposes data structures related with that context. Such message is also sent to V8Inspector when a context gets collected by V8 GC, meaning that we were prematurely disposing such data structures during frame dettachment and disallowing debuggability for code using those contexts. Since InspectedContexts holds a weak reference to a context and there's no strong reference from V8Inspector, this change doesn't leak memory by holding contexts alive. Since there are multiple tests that rely on `Runtime.executionContextDestroyed` message, we updated them to perform a GC after frame detachment, so the test could still work as expected. Bug: 1015462 Change-Id: I6014bd8ddbfb1d3838b5364ccc9520b3b363b5fd Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2965275 Reviewed-by: Nate Chapin <japhet@chromium.org> Reviewed-by: Mathias Bynens <mathias@chromium.org> Reviewed-by: Andrey Kosyakov <caseq@chromium.org> Reviewed-by: Simon Zünd <szuend@chromium.org> Commit-Queue: José Dapena Paz <jdapena@igalia.com> Cr-Commit-Position: refs/heads/master@{#908362}
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