[WIP] Added CodeEventListener to the sampler API.

src/isolate.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_ISOLATE_H_
 #define V8_ISOLATE_H_
 
 #include "include/v8-debug.h"
 #include "src/allocation.h"
 #include "src/assert-scope.h"
@@ skipping 348 matching lines @@
   V(int, pending_microtask_count, 0)                                           \
   V(bool, autorun_microtasks, true)                                            \
   V(HStatistics*, hstatistics, NULL)                                           \
   V(HTracer*, htracer, NULL)                                                   \
   V(CodeTracer*, code_tracer, NULL)                                            \
   V(bool, fp_stubs_generated, false)                                           \
   V(int, max_available_threads, 0)                                             \
   V(uint32_t, per_isolate_assert_data, 0xFFFFFFFFu)                            \
   V(InterruptCallback, api_interrupt_callback, NULL)                           \
   V(void*, api_interrupt_callback_data, NULL)                                  \
+  V(v8::CodeEventHandler*, code_event_handler, NULL)                           \
   ISOLATE_INIT_SIMULATOR_LIST(V)
 
 #define THREAD_LOCAL_TOP_ACCESSOR(type, name)                        \
   inline void set_##name(type v) { thread_local_top_.name##_ = v; }  \
   inline type name() const { return thread_local_top_.name##_; }
 
 
 class Isolate {
   // These forward declarations are required to make the friend declarations in
   // PerIsolateThreadData work on some older versions of gcc.
@@ skipping 711 matching lines @@
   void AddCallCompletedCallback(CallCompletedCallback callback);
   void RemoveCallCompletedCallback(CallCompletedCallback callback);
   void FireCallCompletedCallback();
 
   void EnqueueMicrotask(Handle<Object> microtask);
   void RunMicrotasks();
 
   void SetUseCounterCallback(v8::Isolate::UseCounterCallback callback);
   void CountUsage(v8::Isolate::UseCounterFeature feature);
 
+  // For sampler public API
+  void CodeCreateEvent(Code* code, const char* source);
+  void CodeCreateEvent(Code* code, Name* name);
+  void CodeCreateEvent(Code* code, String* regexp_source);
+  void CodeCreateEvent(Code* code,
+                       SharedFunctionInfo* shared,
+                       Name* source, int line, int column);
+  void CodeCreateEvent(Address from,
+                       const char* name_prefix,
+                       Name* name);
+
  private:
   static void EnsureInitialized();
 
   Isolate();
 
   friend struct GlobalState;
   friend struct InitializeGlobalState;
 
   enum State {
     UNINITIALIZED,    // Some components may not have been allocated.
@@ skipping 415 matching lines @@
   }
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ISOLATE_H_