Initial UserTag and dart:profiler library

runtime/vm/isolate.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ISOLATE_H_
 #define VM_ISOLATE_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/thread.h"
@@ skipping 12 matching lines @@
 class AbstractType;
 class ApiState;
 class Array;
 class Class;
 class CodeIndexTable;
 class Debugger;
 class DeoptContext;
 class Error;
 class Field;
 class Function;
+class GrowableObjectArray;
 class HandleScope;
 class HandleVisitor;
 class Heap;
 class ICData;
 class Instance;
 class IsolateProfilerData;
 class IsolateSpawnState;
 class InterruptableThreadState;
 class LongJumpScope;
 class MessageHandler;
 class Mutex;
 class Object;
+class ObjectIdRing;
 class ObjectPointerVisitor;
 class ObjectStore;
 class RawInstance;
 class RawArray;
 class RawContext;
 class RawDouble;
+class RawGrowableObjectArray;
 class RawMint;
 class RawObject;
 class RawInteger;
 class RawError;
 class RawFloat32x4;
 class RawInt32x4;
+class RawUserTag;
 class SampleBuffer;
 class Simulator;
 class StackResource;
 class StackZone;
 class StubCode;
 class TypeArguments;
 class TypeParameter;
-class ObjectIdRing;
+class UserTag;
 
 
 class IsolateVisitor {
  public:
   IsolateVisitor() {}
   virtual ~IsolateVisitor() {}
 
   virtual void VisitIsolate(Isolate* isolate) = 0;
 
  private:
@@ skipping 388 matching lines @@
   InterruptableThreadState* thread_state() const {
     return thread_state_;
   }
 
   void ProfileInterrupt();
 
   VMTagCounters* vm_tag_counters() {
     return &vm_tag_counters_;
   }
 
+  uword user_tag() const {
+    return user_tag_;
+  }
+
+  RawGrowableObjectArray* tag_table() const { return tag_table_; }
+  void set_tag_table(const GrowableObjectArray& value);
+
+  RawUserTag* current_tag() const { return current_tag_; }
+  void set_current_tag(const UserTag& tag);
+  void clear_current_tag();
+
 #if defined(DEBUG)
 #define REUSABLE_HANDLE_SCOPE_ACCESSORS(object)                                \
   void set_reusable_##object##_handle_scope_active(bool value) {               \
     reusable_##object##_handle_scope_active_ = value;                          \
   }                                                                            \
   bool reusable_##object##_handle_scope_active() const {                       \
     return reusable_##object##_handle_scope_active_;                           \
   }
   REUSABLE_HANDLE_LIST(REUSABLE_HANDLE_SCOPE_ACCESSORS)
 #undef REUSABLE_HANDLE_SCOPE_ACCESSORS
 #endif  // defined(DEBUG)
 
 #define REUSABLE_HANDLE(object)                                                \
   object& object##Handle() const {                                             \
     return *object##_handle_;                                                  \
   }
   REUSABLE_HANDLE_LIST(REUSABLE_HANDLE)
 #undef REUSABLE_HANDLE
 
   static void VisitIsolates(IsolateVisitor* visitor);
 
  private:
   Isolate();
 
   void BuildName(const char* name_prefix);
   void PrintInvokedFunctions();
 
   void ProfileIdle();
 
+  void set_user_tag(uword tag) {
+    user_tag_ = tag;
+  }
+
+
   template<class T> T* AllocateReusableHandle();
 
   static ThreadLocalKey isolate_key;
 
   StoreBuffer store_buffer_;
   ClassTable class_table_;
   MegamorphicCacheTable megamorphic_cache_table_;
   Dart_MessageNotifyCallback message_notify_callback_;
   char* name_;
   int64_t start_time_;
@@ skipping 34 matching lines @@
   bool cha_used_;
 
   // Ring buffer of objects assigned an id.
   ObjectIdRing* object_id_ring_;
 
   IsolateProfilerData* profiler_data_;
   Mutex profiler_data_mutex_;
   InterruptableThreadState* thread_state_;
 
   VMTagCounters vm_tag_counters_;
+  uword user_tag_;
+  RawGrowableObjectArray* tag_table_;
+  RawUserTag* current_tag_;
 
   // Isolate list next pointer.
   Isolate* next_;
 
   // Reusable handles support.
 #define REUSABLE_HANDLE_FIELDS(object)                                         \
   object* object##_handle_;
   REUSABLE_HANDLE_LIST(REUSABLE_HANDLE_FIELDS)
 #undef REUSABLE_HANDLE_FIELDS
 
@@ skipping 122 matching lines @@
   char* script_url_;
   char* library_url_;
   char* class_name_;
   char* function_name_;
   char* exception_callback_name_;
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_