Allow recording individual samples in addition to the aggregated CPU profiles

include/v8-profiler.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 87 matching lines @@
 
   /** Returns the count of samples where function exists. */
   double GetTotalSamplesCount() const;
 
   /** Returns the count of samples where function was currently executing. */
   double GetSelfSamplesCount() const;
 
   /** Returns function entry UID. */
   unsigned GetCallUid() const;
 
+  /** Returns id of the node. The id is unique within the tree */
+  unsigned GetNodeId() const;
+
   /** Returns child nodes count of the node. */
   int GetChildrenCount() const;
 
   /** Retrieves a child node by index. */
   const CpuProfileNode* GetChild(int index) const;
 
   static const int kNoLineNumberInfo = Message::kNoLineNumberInfo;
 };
 
 
 /**
  * CpuProfile contains a CPU profile in a form of top-down call tree
  * (from main() down to functions that do all the work).
  */
 class V8EXPORT CpuProfile {
  public:
   /** Returns CPU profile UID (assigned by the profiler.) */
   unsigned GetUid() const;
 
   /** Returns CPU profile title. */
   Handle<String> GetTitle() const;
 
   /** Returns the root node of the top down call tree. */
   const CpuProfileNode* GetTopDownRoot() const;
 
   /**
+    * Returns number of samples recorded. The samples are not recorded unless
+    * |record_samples| parameter of CpuProfiler::StartProfiling is true.
+    */
+  int GetSamplesCount() const;
+
+  /**
+    * Returns profile node corresponding to the top frame the sample at
+    * the given index.
+    */
+  const CpuProfileNode* GetSample(int index) const;
+
+  /**
    * Deletes the profile and removes it from CpuProfiler's list.
    * All pointers to nodes previously returned become invalid.
    * Profiles with the same uid but obtained using different
    * security token are not deleted, but become inaccessible
    * using FindProfile method. It is embedder's responsibility
    * to call Delete on these profiles.
    */
   void Delete();
 };
 
@@ skipping 28 matching lines @@
       unsigned uid,
       Handle<Value> security_token = Handle<Value>());
 
   /**
    * Starts collecting CPU profile. Title may be an empty string. It
    * is allowed to have several profiles being collected at
    * once. Attempts to start collecting several profiles with the same
    * title are silently ignored. While collecting a profile, functions
    * from all security contexts are included in it. The token-based
    * filtering is only performed when querying for a profile.
+   *
+   * |record_samples| parameter controls whether individual samples should
+   * be recorded in addition to the aggregated tree.
    */
-  static void StartProfiling(Handle<String> title);
+  static void StartProfiling(Handle<String> title, bool record_samples = false);
 
   /**
    * Stops collecting CPU profile with a given title and returns it.
    * If the title given is empty, finishes the last profile started.
    */
   static const CpuProfile* StopProfiling(
       Handle<String> title,
       Handle<Value> security_token = Handle<Value>());
 
   /**
@@ skipping 373 matching lines @@
 };
 
 
 }  // namespace v8
 
 
 #undef V8EXPORT
 
 
 #endif  // V8_V8_PROFILER_H_