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Author SHA1 Message Date
Fedor Indutny
d4a1b41129
fix: microtasks policy in CreateEnvironment (#29531)
* fix: microtasks policy in CreateEnvironment

Microtasks policy should not be updated for the renderer because
`NodeBindings::CreateEnvironment` might be entered with or without
`UvRunOnce()` on stack. One of the examples of such calls is
`window.open()` which is possible to invoke while `uv_run()` is still
running (e.g. with `setImmediate()`).

All in all, it doesn't matter that much which policy we use since
`v8::MicrotasksScope` has a check for the policy in its destructor and
no commits will be made if the policy is `kExplicit`. It is important,
however, to not change the policy in the middle of `UvRunOnce()` so we
should respect whatever we currently have and move on.

Fix: #29463

* Move test to a better place

* Update spec-main/fixtures/crash-cases/setimmediate-window-open-crash/index.html

Co-authored-by: Jeremy Rose <nornagon@nornagon.net>

* Update spec-main/fixtures/crash-cases/setimmediate-window-open-crash/index.html

Co-authored-by: Jeremy Rose <nornagon@nornagon.net>

* simplify crash-case

* comment

* fix comment

Co-authored-by: Fedor Indutny <79877362+indutny-signal@users.noreply.github.com>
Co-authored-by: Jeremy Rose <nornagon@nornagon.net>
Co-authored-by: Fedor Indutny <indutny@signal.org>
2021-06-21 14:06:17 +09:00