Allow Observatory debugger to switch isolates.

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 "vm/base_isolate.h"
@@ skipping 160 matching lines @@
   // TODO(koda): Remove after caching current thread in generated code.
   Thread* mutator_thread() {
     DEBUG_ASSERT(IsIsolateOf(mutator_thread_));
     return mutator_thread_;
   }
 #if defined(DEBUG)
   bool IsIsolateOf(Thread* thread);
 #endif  // DEBUG
 
   const char* name() const { return name_; }
+  const char* debugger_name() const { return debugger_name_; }
+  void set_debugger_name(const char* name);
+
   // TODO(koda): Move to Thread.
   class Log* Log() const;
 
   int64_t start_time() const { return start_time_; }
 
   Dart_Port main_port() const { return main_port_; }
   void set_main_port(Dart_Port port) {
     ASSERT(main_port_ == 0);  // Only set main port once.
     main_port_ = port;
   }
@@ skipping 491 matching lines @@
 
   template<class T> T* AllocateReusableHandle();
 
   Thread* mutator_thread_;
   uword vm_tag_;
   StoreBuffer store_buffer_;
   ClassTable class_table_;
   MegamorphicCacheTable megamorphic_cache_table_;
   Dart_MessageNotifyCallback message_notify_callback_;
   char* name_;
+  char* debugger_name_;
   int64_t start_time_;
   Dart_Port main_port_;
   Dart_Port origin_id_;  // Isolates created by spawnFunc have some origin id.
   uint64_t pause_capability_;
   uint64_t terminate_capability_;
   bool errors_fatal_;
   Heap* heap_;
   ObjectStore* object_store_;
   uword top_exit_frame_info_;
   void* init_callback_data_;
@@ skipping 90 matching lines @@
   static Dart_FileReadCallback file_read_callback_;
   static Dart_FileWriteCallback file_write_callback_;
   static Dart_FileCloseCallback file_close_callback_;
   static Dart_EntropySource entropy_source_callback_;
   static Dart_IsolateInterruptCallback vmstats_callback_;
 
   // Manage list of existing isolates.
   static void AddIsolateTolist(Isolate* isolate);
   static void RemoveIsolateFromList(Isolate* isolate);
   static void CheckForDuplicateThreadState(InterruptableThreadState* state);
-  static Monitor* isolates_list_monitor_;
+
+  static Monitor* isolates_list_monitor_;  // Protects isolates_list_head_
   static Isolate* isolates_list_head_;
 
 #define REUSABLE_FRIEND_DECLARATION(name)                                      \
   friend class Reusable##name##HandleScope;
 REUSABLE_HANDLE_LIST(REUSABLE_FRIEND_DECLARATION)
 #undef REUSABLE_FRIEND_DECLARATION
 
   friend class ServiceIsolate;
   friend class Thread;
 
@@ skipping 116 matching lines @@
   uint8_t* serialized_args_;
   intptr_t serialized_args_len_;
   uint8_t* serialized_message_;
   intptr_t serialized_message_len_;
   bool paused_;
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_