Initial UserTag and dart:profiler library

runtime/vm/object.h

 // Copyright (c) 2012, 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_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/json_stream.h"
 #include "vm/bitmap.h"
 #include "vm/dart.h"
 #include "vm/globals.h"
 #include "vm/handles.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
 #include "vm/os.h"
 #include "vm/raw_object.h"
 #include "vm/scanner.h"
+#include "vm/tags.h"
 
 namespace dart {
 
 // Forward declarations.
 #define DEFINE_FORWARD_DECLARATION(clazz)                                      \
   class clazz;
 CLASS_LIST(DEFINE_FORWARD_DECLARATION)
 #undef DEFINE_FORWARD_DECLARATION
 class Api;
 class ArgumentsDescriptor;
@@ skipping 2608 matching lines @@
 
   static RawLibrary* AsyncLibrary();
   static RawLibrary* CoreLibrary();
   static RawLibrary* CollectionLibrary();
   static RawLibrary* InternalLibrary();
   static RawLibrary* IsolateLibrary();
   static RawLibrary* MathLibrary();
   static RawLibrary* MirrorsLibrary();
   static RawLibrary* NativeWrappersLibrary();
   static RawLibrary* TypedDataLibrary();
+  static RawLibrary* ProfilerLibrary();
 
   // Eagerly compile all classes and functions in the library.
   static RawError* CompileAll();
 
   // Checks function fingerprints. Prints mismatches and aborts if
   // mismatch found.
   static void CheckFunctionFingerprints();
 
   static bool IsPrivate(const String& name);
   // Construct the full name of a corelib member.
@@ skipping 3976 matching lines @@
   static intptr_t InstanceSize() {
     return RoundedAllocationSize(sizeof(RawMirrorReference));
   }
 
  private:
   FINAL_HEAP_OBJECT_IMPLEMENTATION(MirrorReference, Instance);
   friend class Class;
 };
 
 
+class UserTag : public Instance {
+ public:
+  uword tag() const { return raw_ptr()->tag(); }
+  void set_tag(uword t) const {
+    ASSERT(t >= UserTags::kUserTagIdOffset);
+    ASSERT(t < UserTags::kUserTagIdOffset + UserTags::kMaxUserTags);
+    raw_ptr()->tag_ = t;
+  };
+
+  RawString* label() const {
+    return raw_ptr()->label_;
+  }
+
+  void MakeActive() const;
+  static void ClearActive();
+
+  static intptr_t InstanceSize() {
+    return RoundedAllocationSize(sizeof(RawUserTag));
+  }
+
+  static RawUserTag* New(const String& label,
+                         Heap::Space space = Heap::kOld);
+
+  static bool TagTableIsFull(Isolate* isolate);
+  static RawUserTag* FindTagById(uword tag_id);
+
+ private:
+  static RawUserTag* FindTagInIsolate(Isolate* isolate, const String& label);
+  static void AddTagToIsolate(Isolate* isolate, const UserTag& tag);
+  static intptr_t FindAvailableTagId(Isolate* isolate);
+
+  void set_label(const String& tag_label) const {
+    StorePointer(&raw_ptr()->label_, tag_label.raw());
+  }
+
+  FINAL_HEAP_OBJECT_IMPLEMENTATION(UserTag, Instance);
+  friend class Class;
+};
+
+
 // Breaking cycles and loops.
 RawClass* Object::clazz() const {
   uword raw_value = reinterpret_cast<uword>(raw_);
   if ((raw_value & kSmiTagMask) == kSmiTag) {
     return Smi::Class();
   }
   return Isolate::Current()->class_table()->At(raw()->GetClassId());
 }
 
 
@@ skipping 120 matching lines @@
 
 
 RawObject* MegamorphicCache::GetTargetFunction(const Array& array,
                                                intptr_t index) {
   return array.At((index * kEntryLength) + kTargetFunctionIndex);
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_