[inspector] async stacks for Promise.then calls...

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"
 #include "src/base/atomicops.h"
 #include "src/base/hashmap.h"
 #include "src/base/platform/platform.h"
 #include "src/debug/debug-interface.h"
+#include "src/debug/interface-types.h"
 #include "src/execution.h"
 #include "src/factory.h"
 #include "src/flags.h"
 #include "src/frames.h"
 #include "src/globals.h"
 #include "src/runtime/runtime.h"
 #include "src/source-position-table.h"
 #include "src/string-stream.h"
 #include "src/v8threads.h"
 
@@ skipping 375 matching lines @@
 // DebugInfo.
 class Debug {
  public:
   // Debug event triggers.
   void OnDebugBreak(Handle<Object> break_points_hit, bool auto_continue);
 
   void OnThrow(Handle<Object> exception);
   void OnPromiseReject(Handle<Object> promise, Handle<Object> value);
   void OnCompileError(Handle<Script> script);
   void OnAfterCompile(Handle<Script> script);
-  void OnAsyncTaskEvent(Handle<String> type, Handle<Object> id,
+  void OnAsyncTaskEvent(debug::AsyncTaskEventType, Handle<Object> id,
                         Handle<String> name);
 
   // API facing.
   void SetEventListener(Handle<Object> callback, Handle<Object> data);
   void SetMessageHandler(v8::Debug::MessageHandler handler);
   void EnqueueCommandMessage(Vector<const uint16_t> command,
                              v8::Debug::ClientData* client_data = NULL);
   MUST_USE_RESULT MaybeHandle<Object> Call(Handle<Object> fun,
                                            Handle<Object> data);
   Handle<Context> GetDebugContext();
@@ skipping 27 matching lines @@
   void PrepareStepOnThrow();
   void ClearStepping();
   void ClearStepOut();
 
   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);
 
+  Handle<Object> NextAsyncTaskId(Handle<JSObject> promise);
+
   // 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>
   bool CompileToRevealInnerFunctions(C* compilable);
@@ skipping 109 matching lines @@
   // 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);
   MUST_USE_RESULT MaybeHandle<Object> MakeCompileEvent(
       Handle<Script> script, v8::DebugEvent type);
-  MUST_USE_RESULT MaybeHandle<Object> MakeAsyncTaskEvent(Handle<String> type,
+  MUST_USE_RESULT MaybeHandle<Object> MakeAsyncTaskEvent(Handle<Smi> type,
                                                          Handle<Object> id,
                                                          Handle<String> name);
 
   // Mirror cache handling.
   void ClearMirrorCache();
 
   void CallEventCallback(v8::DebugEvent event,
                          Handle<Object> exec_state,
                          Handle<Object> event_data,
                          v8::Debug::ClientData* client_data);
@@ skipping 97 matching lines @@
 
     // Stores the way how LiveEdit has patched the stack. It is used when
     // debugger returns control back to user script.
     LiveEditFrameDropMode frame_drop_mode_;
 
     // Value of accumulator in interpreter frames. In non-interpreter frames
     // this value will be the hole.
     Handle<Object> return_value_;
 
     Object* suspended_generator_;
+
+    int async_task_count_;
+    Handle<JSWeakMap> async_task_ids_;
   };
 
   // Storage location for registers when handling debug break calls
   ThreadLocal thread_local_;
 
   Isolate* isolate_;
 
   friend class Isolate;
   friend class DebugScope;
   friend class DisableBreak;
@@ skipping 97 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_