CpuProfiler: public API for deopt info in cpu profiler.

include/v8-profiler.h

 // Copyright 2010 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_V8_PROFILER_H_
 #define V8_V8_PROFILER_H_
 
 #include "v8.h"
 
 /**
  * Profiler support for the V8 JavaScript engine.
  */
 namespace v8 {
 
 class HeapGraphNode;
 struct HeapStatsUpdate;
 
 typedef uint32_t SnapshotObjectId;
 
+
+class V8_EXPORT CpuProfileDeoptInfo {
+ public:
+  struct Frame {
+    int script_id;
+    unsigned int position;
+  };
+
+  const char* GetDeoptReason() const;
+  unsigned GetFramesCount() const;
+  bool GetCallFrames(Frame* frames, unsigned int length) const;
+};
+
+
 /**
  * CpuProfileNode represents a node in a call graph.
  */
 class V8_EXPORT CpuProfileNode {
  public:
   struct LineTick {
     /** The 1-based number of the source line where the function originates. */
     int line;
 
     /** The count of samples associated with the source line. */
@@ skipping 48 matching lines @@
 
   /** 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;
 
+  /** Retrieves a child node by index. */

[alph, 2015/03/30 12:31:21]

The comment belongs to the second function.

[loislo, 2015/03/30 13:04:22]

done.

+  unsigned GetDeoptCount() const;
+
+  const CpuProfileDeoptInfo* GetDeoptInfo(unsigned index) const;
+
   static const int kNoLineNumberInfo = Message::kNoLineNumberInfo;
   static const int kNoColumnNumberInfo = Message::kNoColumnInfo;
 };
 
 
 /**
  * CpuProfile contains a CPU profile in a form of top-down call tree
  * (from main() down to functions that do all the work).
  */
 class V8_EXPORT CpuProfile {
@@ skipping 507 matching lines @@
   uint32_t index;  // Index of the time interval that was changed.
   uint32_t count;  // New value of count field for the interval with this index.
   uint32_t size;  // New value of size field for the interval with this index.
 };
 
 
 }  // namespace v8
 
 
 #endif  // V8_V8_PROFILER_H_