[inspector] store creation stack in current V8StackTraceImpl

src/inspector/v8-debugger.cc

 // 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.
 
 #include "src/inspector/v8-debugger.h"
 
 #include "src/inspector/debugger-script.h"
 #include "src/inspector/inspected-context.h"
 #include "src/inspector/protocol/Protocol.h"
 #include "src/inspector/script-breakpoint.h"
@@ skipping 668 matching lines @@
       asyncTaskFinishedForStepping(task);
       break;
   }
 }
 
 V8StackTraceImpl* V8Debugger::currentAsyncCallChain() {
   if (!m_currentStacks.size()) return nullptr;
   return m_currentStacks.back().get();
 }
 
+V8StackTraceImpl* V8Debugger::currentAsyncTaskCreationStack() {
+  if (!m_currentCreationStacks.size()) return nullptr;
+  return m_currentCreationStacks.back().get();
+}
+
 void V8Debugger::compileDebuggerScript() {
   if (!m_debuggerScript.IsEmpty()) {
     UNREACHABLE();
     return;
   }
 
   v8::HandleScope scope(m_isolate);
   v8::Context::Scope contextScope(debuggerContext());
 
   v8::Local<v8::String> scriptValue =
@@ skipping 233 matching lines @@
   //   <-- attached here -->
   // - asyncTaskStarted
   // - asyncTaskCanceled <-- canceled before finished
   //   <-- async stack requested here -->
   // - asyncTaskFinished
   std::unique_ptr<V8StackTraceImpl> stack;
   if (stackIt != m_asyncTaskStacks.end() && stackIt->second)
     stack = stackIt->second->cloneImpl();
   auto itCreation = m_asyncTaskCreationStacks.find(task);
   if (stack && itCreation != m_asyncTaskCreationStacks.end()) {
-    stack->setCreation(itCreation->second->cloneImpl());
+    m_currentCreationStacks.push_back(itCreation->second->cloneImpl());
+  } else {
+    m_currentCreationStacks.push_back(nullptr);
   }
   m_currentStacks.push_back(std::move(stack));
 }
 
 void V8Debugger::asyncTaskFinishedForStack(void* task) {
   if (!m_maxAsyncCallStackDepth) return;
   // We could start instrumenting half way and the stack is empty.
   if (!m_currentStacks.size()) return;
-
   DCHECK(m_currentTasks.back() == task);
   m_currentTasks.pop_back();
 
+  DCHECK(m_currentStacks.size() == m_currentCreationStacks.size());
   m_currentStacks.pop_back();
+  m_currentCreationStacks.pop_back();
   if (m_recurringTasks.find(task) == m_recurringTasks.end()) {
     asyncTaskCanceledForStack(task);
   }
 }
 
 void V8Debugger::asyncTaskCandidateForStepping(void* task) {
   if (!m_stepIntoAsyncCallback) return;
   DCHECK(m_targetContextGroupId);
   if (currentContextGroupId() != m_targetContextGroupId) return;
   m_taskWithScheduledBreak = task;
@@ skipping 17 matching lines @@
 
 void V8Debugger::asyncTaskCanceledForStepping(void* task) {
   if (task != m_taskWithScheduledBreak) return;
   m_taskWithScheduledBreak = nullptr;
 }
 
 void V8Debugger::allAsyncTasksCanceled() {
   m_asyncTaskStacks.clear();
   m_recurringTasks.clear();
   m_currentStacks.clear();
+  m_currentCreationStacks.clear();
   m_currentTasks.clear();
   m_parentTask.clear();
   m_asyncTaskCreationStacks.clear();
   m_idToTask.clear();
   m_taskToId.clear();
   m_lastTaskId = 0;
 }
 
 void V8Debugger::muteScriptParsedEvents() {
   ++m_ignoreScriptParsedEventsCounter;
@@ skipping 19 matching lines @@
 
   return V8StackTraceImpl::capture(this, contextGroupId, stackSize);
 }
 
 int V8Debugger::currentContextGroupId() {
   if (!m_isolate->InContext()) return 0;
   return m_inspector->contextGroupId(m_isolate->GetCurrentContext());
 }
 
 }  // namespace v8_inspector