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Issue #2240 - Align Microtasks and promises scheduling with spec

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Microtasks, resolved Promises and Observers are handled after the sync
task that caused them, in the order they were generated.
Also simplifies reentrancy handling.

Based-on: m-c 1193394
This commit is contained in:
Martok 2024-01-05 17:19:42 +01:00 • committed by roytam1
commit f059bb0a59
23 changed files with 260 additions and 347 deletions
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6
dom/base/nsGlobalWindow.cpp
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@ -12999,12 +12999,6 @@ nsGlobalWindow::RunTimeoutHandler(Timeout* aTimeout,
// point anyway, and the script context should have already reported
// the script error in the usual way - so we just drop it.
// Since we might be processing more timeouts, go ahead and flush the promise
// queue now before we do that. We need to do that while we're still in our
// "running JS is safe" state (e.g. mRunningTimeout is set, timeout->mRunning
// is false).
Promise::PerformMicroTaskCheckpoint();
if (trackNestingLevel) {
sNestingLevel = nestingLevel;
}