07011cc4f0
This replaces Runtime_RunMicrotasks with Runtime_PerformMicrotaskCheckpoint.
RunMicrotasks forcibly runs Microtasks even when the microtasks are suppressed,
and may causes nested Microtasks in a problematic way. E.g. that confuses
v8::MicrotasksScope::IsRunningMicrotasks() and GetEnteredOrMicrotaskContext().
OTOH, PerformMicrotaskCheckpoint() doesn't run cause the failure as it
respects the microtask suppressions.
As all existing tests don't call RunMicrotasks() in the suppressed situation
(like Promise.resolve().then(()=>{%RunMicrotasks();})), this change should
not affect to these tests.
Change-Id: Ib043a0cc8e482e022d375084d65ea98a6f54ef3d
Reviewed-on: https://chromium-review.googlesource.com/c/1360095
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Taiju Tsuiki <tzik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58068}
50 lines
1.1 KiB
JavaScript
50 lines
1.1 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
var Debug = debug.Debug;
|
|
var step_count = 0;
|
|
|
|
function listener(event, execState, eventData, data) {
|
|
if (event != Debug.DebugEvent.Break) return;
|
|
try {
|
|
var line = execState.frame(0).sourceLineText();
|
|
print(line);
|
|
var [match, expected_count, step] = /\/\/ B(\d) (\w+)$/.exec(line);
|
|
assertEquals(step_count++, parseInt(expected_count));
|
|
if (step != "Continue") execState.prepareStep(Debug.StepAction[step]);
|
|
} catch (e) {
|
|
print(e, e.stack);
|
|
quit(1);
|
|
}
|
|
}
|
|
|
|
Debug.setListener(listener);
|
|
|
|
var late_resolve;
|
|
|
|
function g() {
|
|
return new Promise( // B2 StepOut
|
|
function(res, rej) {
|
|
late_resolve = res;
|
|
}
|
|
);
|
|
}
|
|
|
|
async function f() {
|
|
var a = 1;
|
|
debugger; // B0 StepNext
|
|
a +=
|
|
await // B1 StepIn
|
|
g();
|
|
return a; // B3 Continue
|
|
}
|
|
|
|
f();
|
|
|
|
late_resolve(3);
|
|
|
|
%PerformMicrotaskCheckpoint();
|
|
|
|
assertEquals(4, step_count);
|