[inspector] introduced debug::SetCompileEventListener

src/debug/debug.h

 // Copyright 2012 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.
 
 #ifndef V8_DEBUG_DEBUG_H_
 #define V8_DEBUG_DEBUG_H_
 
 #include "src/allocation.h"
 #include "src/arguments.h"
 #include "src/assembler.h"
@@ skipping 449 matching lines @@
 
   bool PrepareFunctionForBreakPoints(Handle<SharedFunctionInfo> shared);
   bool GetPossibleBreakpoints(Handle<Script> script, int start_position,
                               int end_position, std::set<int>* positions);
 
   void RecordGenerator(Handle<JSGeneratorObject> generator_object);
 
   int NextAsyncTaskId(Handle<JSObject> promise);
 
   void SetAsyncTaskListener(debug::AsyncTaskListener listener, void* data);
+  void SetCompileEventListener(debug::CompileEventListener listener,
+                               void* data);
 
   // Returns whether the operation succeeded. Compilation can only be triggered
   // if a valid closure is passed as the second argument, otherwise the shared
   // function needs to be compiled already.
   bool EnsureDebugInfo(Handle<SharedFunctionInfo> shared,
                        Handle<JSFunction> function);
   void CreateDebugInfo(Handle<SharedFunctionInfo> shared);
   static Handle<DebugInfo> GetDebugInfo(Handle<SharedFunctionInfo> shared);
 
   template <typename C>
@@ skipping 108 matching lines @@
   }
 
   void clear_suspended_generator() {
     thread_local_.suspended_generator_ = Smi::kZero;
   }
 
   bool has_suspended_generator() const {
     return thread_local_.suspended_generator_ != Smi::kZero;
   }
 
+  // There are three types of event listeners: C++ message_handler,
+  // JavaScript event listener and C++ event listener.
+  // Currently inspector still uses C++ event listener and installs
+  // more specific event listeners for part of events. Calling of
+  // C++ event listener is redundant when more specific event listener
+  // is presented. Other clients can install JavaScript event listener
+  // (e.g. some of NodeJS module).
+  bool non_inspector_listener_exists() const {
+    return message_handler_ != nullptr ||
+           (!event_listener_.is_null() && !event_listener_->IsForeign());
+  }
+
   void OnException(Handle<Object> exception, Handle<Object> promise);
 
   // Constructors for debug event objects.
   MUST_USE_RESULT MaybeHandle<Object> MakeExecutionState();
   MUST_USE_RESULT MaybeHandle<Object> MakeBreakEvent(
       Handle<Object> break_points_hit);
   MUST_USE_RESULT MaybeHandle<Object> MakeExceptionEvent(
       Handle<Object> exception,
       bool uncaught,
       Handle<Object> promise);
@@ skipping 52 matching lines @@
 
   // Global handles.
   Handle<Context> debug_context_;
   Handle<Object> event_listener_;
   Handle<Object> event_listener_data_;
 
   v8::Debug::MessageHandler message_handler_;
 
   debug::AsyncTaskListener async_task_listener_ = nullptr;
   void* async_task_listener_data_ = nullptr;
+  debug::CompileEventListener compile_event_listener_ = nullptr;
+  void* compile_event_listener_data_ = nullptr;
 
   static const int kQueueInitialSize = 4;
   base::Semaphore command_received_;  // Signaled for each command received.
   LockingCommandMessageQueue command_queue_;
 
   // Debugger is active, i.e. there is a debug event listener attached.
   bool is_active_;
   // Debugger needs to be notified on every new function call.
   // Used for stepping and read-only checks
   bool hook_on_function_call_;
@@ skipping 191 matching lines @@
                                   Handle<Code> code);
   static bool DebugBreakSlotIsPatched(Address pc);
   static void ClearDebugBreakSlot(Isolate* isolate, Address pc);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_DEBUG_DEBUG_H_