fe3d51e1b2
Currently, debugger pauses on async call schedule and then waits for Debugger.pauseOnAsyncCall with parentStackTraceId to actually schedule the pause. This CL combines these two steps: - For local async tasks, it just stores m_taskWithScheduledBreak at the time of schedule, to be able to pause once this task is run. - For external async tasks, it plumbs "should_pause" boolean in V8StackTraceId from the point of schedule to the point of execution, and schedules a pause once externalAsyncTaskStarted is called with "should_pause" set to true. This approach greatly simplifies the implementation, and reduced frontend to a single "breakOnAsyncCall: true" parameter in Debugger.stepInto. Drive-by: introduce hasScheduledBreakOnNextFunctionCall() to make SetBreakOnNextFunctionCall management more robust. Note: artificial pauses at async call schedule time are gone from test expectations - we now only pause when user actually wants to pause, which makes protocol much simpler. See also design doc linked in the bug. BUG=chromium:1000475 Change-Id: I2d16f79c599fe196b2aaeca8223c63437a2954a9 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1783724 Commit-Queue: Dmitry Gozman <dgozman@chromium.org> Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Cr-Commit-Position: refs/heads/master@{#63737}
75 lines
2.4 KiB
JavaScript
75 lines
2.4 KiB
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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let {session, contextGroup, Protocol} =
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InspectorTest.start('Test for step-into remote async task.');
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contextGroup.addScript(`
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function store(description) {
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let buffer = inspector.storeCurrentStackTrace(description);
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return '[' + new Int32Array(buffer).join(',') + ']';
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}
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//# sourceURL=utils.js`);
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contextGroup.addScript(`
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function call(id, f) {
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inspector.externalAsyncTaskStarted(Int32Array.from(JSON.parse(id)).buffer);
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f();
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inspector.externalAsyncTaskFinished(Int32Array.from(JSON.parse(id)).buffer);
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}
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//# sourceURL=framework.js`);
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session.setupScriptMap();
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(async function test() {
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InspectorTest.log('Setup debugger agents..');
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let debuggerId = (await Protocol.Debugger.enable()).result.debuggerId;
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Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 128});
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Protocol.Debugger.setBlackboxPatterns({patterns: ['framework\.js']});
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InspectorTest.log('Pause before stack trace is captured..');
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Protocol.Debugger.setBreakpointByUrl(
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{lineNumber: 2, columnNumber: 25, url: 'utils.js'});
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let evaluatePromise = Protocol.Runtime.evaluate({
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expression: `(function foo() {
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return store('remote-task');
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})()
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//# sourceURL=source.js`
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});
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await Protocol.Debugger.oncePaused();
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InspectorTest.log('Run stepInto with breakOnAsyncCall flag');
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Protocol.Debugger.stepInto({breakOnAsyncCall: true});
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InspectorTest.log('Trigger external async task on another context group');
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let stackTraceId = (await evaluatePromise).result.result.value;
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Protocol.Runtime.evaluate({
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expression: `call('${stackTraceId}',
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function boo() {})
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//# sourceURL=target.js`
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});
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InspectorTest.log('Dump stack trace');
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let {params: {callFrames, asyncStackTraceId}} =
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await Protocol.Debugger.oncePaused();
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while (true) {
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session.logCallFrames(callFrames);
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if (asyncStackTraceId) {
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let {result: {stackTrace}} = await Protocol.Debugger.getStackTrace(
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{stackTraceId: asyncStackTraceId});
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InspectorTest.log(`-- ${stackTrace.description} --`);
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callFrames = stackTrace.callFrames;
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asyncStackTraceId = stackTrace.parentId;
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} else {
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break;
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}
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}
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Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 0});
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await Protocol.Debugger.disable();
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InspectorTest.completeTest();
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})()
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