[inspector] cleanup all task related data when limit reached

src/inspector/v8-debugger.cc

Index: src/inspector/v8-debugger.cc
diff --git a/src/inspector/v8-debugger.cc b/src/inspector/v8-debugger.cc
index 1e9ee03b16adca1109bab4f0a0b2c650f1faeda0..4a9ca5a55a5054c22ba8d61fce511266a81033c2 100644
--- a/src/inspector/v8-debugger.cc
+++ b/src/inspector/v8-debugger.cc
@@ -21,7 +21,7 @@ namespace v8_inspector {
 
 namespace {
 
-static const int kMaxAsyncTaskStacks = 1024 * 1024;
+static const int kMaxAsyncTaskStacks = 128 * 1024;
 
 inline v8::Local<v8::Boolean> v8Boolean(bool value, v8::Isolate* isolate) {
   return value ? v8::True(isolate) : v8::False(isolate);
@@ -1023,6 +1023,18 @@ void V8Debugger::collectOldAsyncStacksIfNeeded() {
   }
   removeOldAsyncTasks(m_asyncTaskStacks);
   removeOldAsyncTasks(m_asyncTaskCreationStacks);
+  protocol::HashSet<void*> recurringLeft;
+  for (auto task : m_recurringTasks) {
+    if (m_asyncTaskStacks.find(task) == m_asyncTaskStacks.end()) continue;
+    recurringLeft.insert(task);
+  }
+  m_recurringTasks.swap(recurringLeft);
+  protocol::HashMap<void*, void*> parentLeft;
+  for (auto it : m_parentTask) {
+    if (m_asyncTaskStacks.find(it.first) == m_asyncTaskStacks.end()) continue;
+    parentLeft.insert(it);
+  }
+  m_parentTask.swap(parentLeft);
 }
 
 void V8Debugger::removeOldAsyncTasks(AsyncTaskToStackTrace& map) {