[inspector] added V8InspectorClient::maxAsyncCallStackDepthChanged

R=dgozman@chromium.org

Bug: none
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_chromium_rel_ng
Change-Id: I0fa10978266feb3c3907ce1f3386ae7a34a33582
Reviewed-on: https://chromium-review.googlesource.com/726490Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48705}

include/v8-inspector.h

@@ -211,6 +211,8 @@ class V8_EXPORT V8InspectorClient {
   // TODO(dgozman): this was added to support service worker shadow page. We
   // should not connect at all.
   virtual bool canExecuteScripts(int contextGroupId) { return true; }
+
+  virtual void maxAsyncCallStackDepthChanged(int depth) {}
 };
 
 class V8_EXPORT V8Inspector {

src/inspector/v8-debugger.cc

@@ -720,6 +720,8 @@ void V8Debugger::setAsyncCallStackDepth(V8DebuggerAgentImpl* agent, int depth) {
   if (m_maxAsyncCallStackDepth == maxAsyncCallStackDepth) return;
   // TODO(dgozman): ideally, this should be per context group.
   m_maxAsyncCallStackDepth = maxAsyncCallStackDepth;
+  m_inspector->client()->maxAsyncCallStackDepthChanged(
+      m_maxAsyncCallStackDepth);
   if (!maxAsyncCallStackDepth) allAsyncTasksCanceled();
 }
 

test/inspector/debugger/max-async-call-stack-depth-changed-expected.txt

+Tests for max async call stack depth changed.
+maxAsyncCallStackDepthChanged: 8
+maxAsyncCallStackDepthChanged: 0
+maxAsyncCallStackDepthChanged: 8
+maxAsyncCallStackDepthChanged: 0

test/inspector/debugger/max-async-call-stack-depth-changed.js

+// Copyright 2017 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.
+
+let {session, contextGroup, Protocol} =
+    InspectorTest.start('Tests for max async call stack depth changed.');
+
+(async function test(){
+  utils.setLogMaxAsyncCallStackDepthChanged(true);
+  await Protocol.Debugger.enable();
+  await Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 8});
+  await Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 0});
+  await Protocol.Debugger.setAsyncCallStackDepth({maxDepth: 8});
+  await Protocol.Debugger.disable();
+  InspectorTest.completeTest();
+})();

test/inspector/inspector-test.cc

@@ -299,6 +299,10 @@ class UtilsExtension : public IsolateData::SetupGlobalTask {
     utils->Set(ToV8String(isolate, "setLogConsoleApiMessageCalls"),
                v8::FunctionTemplate::New(
                    isolate, &UtilsExtension::SetLogConsoleApiMessageCalls));
+    utils->Set(
+        ToV8String(isolate, "setLogMaxAsyncCallStackDepthChanged"),
+        v8::FunctionTemplate::New(
+            isolate, &UtilsExtension::SetLogMaxAsyncCallStackDepthChanged));
     utils->Set(ToV8String(isolate, "createContextGroup"),
                v8::FunctionTemplate::New(isolate,
                                          &UtilsExtension::CreateContextGroup));
@@ -486,6 +490,17 @@ class UtilsExtension : public IsolateData::SetupGlobalTask {
         args[0].As<v8::Boolean>()->Value());
   }
 
+  static void SetLogMaxAsyncCallStackDepthChanged(
+      const v8::FunctionCallbackInfo<v8::Value>& args) {
+    if (args.Length() != 1 || !args[0]->IsBoolean()) {
+      fprintf(stderr,
+              "Internal error: setLogMaxAsyncCallStackDepthChanged(bool).");
+      Exit();
+    }
+    backend_runner_->data()->SetLogMaxAsyncCallStackDepthChanged(
+        args[0].As<v8::Boolean>()->Value());
+  }
+
   static void CreateContextGroup(
       const v8::FunctionCallbackInfo<v8::Value>& args) {
     if (args.Length() != 0) {

test/inspector/isolate-data.cc

@@ -370,6 +370,10 @@ void IsolateData::SetLogConsoleApiMessageCalls(bool log) {
   log_console_api_message_calls_ = log;
 }
 
+void IsolateData::SetLogMaxAsyncCallStackDepthChanged(bool log) {
+  log_max_async_call_stack_depth_changed_ = log;
+}
+
 v8::MaybeLocal<v8::Value> IsolateData::memoryInfo(v8::Isolate* isolate,
                                                   v8::Local<v8::Context>) {
   if (memory_info_.IsEmpty()) return v8::MaybeLocal<v8::Value>();
@@ -396,3 +400,8 @@ void IsolateData::consoleAPIMessage(int contextGroupId,
   Print(isolate_, stack->toString()->string());
   fprintf(stdout, "\n");
 }
+
+void IsolateData::maxAsyncCallStackDepthChanged(int depth) {
+  if (!log_max_async_call_stack_depth_changed_) return;
+  fprintf(stdout, "maxAsyncCallStackDepthChanged: %d\n", depth);
+}

test/inspector/isolate-data.h

@@ -64,6 +64,7 @@ class IsolateData : public v8_inspector::V8InspectorClient {
   void SetCurrentTimeMS(double time);
   void SetMemoryInfo(v8::Local<v8::Value> memory_info);
   void SetLogConsoleApiMessageCalls(bool log);
+  void SetLogMaxAsyncCallStackDepthChanged(bool log);
   void SetMaxAsyncTaskStacksForTest(int limit);
   void DumpAsyncTaskStacksStateForTest();
   void FireContextCreated(v8::Local<v8::Context> context, int context_group_id);
@@ -106,6 +107,7 @@ class IsolateData : public v8_inspector::V8InspectorClient {
                          unsigned lineNumber, unsigned columnNumber,
                          v8_inspector::V8StackTrace*) override;
   bool isInspectableHeapObject(v8::Local<v8::Object>) override;
+  void maxAsyncCallStackDepthChanged(int depth) override;
 
   TaskRunner* task_runner_;
   SetupGlobalTasks setup_global_tasks_;
@@ -123,6 +125,7 @@ class IsolateData : public v8_inspector::V8InspectorClient {
   bool current_time_set_ = false;
   double current_time_ = 0.0;
   bool log_console_api_message_calls_ = false;
+  bool log_max_async_call_stack_depth_changed_ = false;
   v8::Global<v8::Private> not_inspectable_private_;
 
   DISALLOW_COPY_AND_ASSIGN(IsolateData);