Revert "Record allocation stack traces".

src/allocation-tracker.h

-// Copyright 2013 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
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef V8_ALLOCATION_TRACKER_H_
-#define V8_ALLOCATION_TRACKER_H_
-
-namespace v8 {
-namespace internal {
-
-class HeapObjectsMap;
-
-class AllocationTraceTree;
-
-class AllocationTraceNode {
- public:
-  AllocationTraceNode(AllocationTraceTree* tree,
-                      SnapshotObjectId shared_function_info_id);
-  ~AllocationTraceNode();
-  AllocationTraceNode* FindChild(SnapshotObjectId shared_function_info_id);
-  AllocationTraceNode* FindOrAddChild(SnapshotObjectId shared_function_info_id);
-  void AddAllocation(unsigned size);
-
-  SnapshotObjectId function_id() const { return function_id_; }
-  unsigned allocation_size() const { return total_size_; }
-  unsigned allocation_count() const { return allocation_count_; }
-  unsigned id() const { return id_; }
-  Vector<AllocationTraceNode*> children() const { return children_.ToVector(); }
-
-  void Print(int indent, AllocationTracker* tracker);
-
- private:
-  AllocationTraceTree* tree_;
-  SnapshotObjectId function_id_;
-  unsigned total_size_;
-  unsigned allocation_count_;
-  unsigned id_;
-  List<AllocationTraceNode*> children_;
-
-  DISALLOW_COPY_AND_ASSIGN(AllocationTraceNode);
-};
-
-
-class AllocationTraceTree {
- public:
-  AllocationTraceTree();
-  ~AllocationTraceTree();
-  AllocationTraceNode* AddPathFromEnd(const Vector<SnapshotObjectId>& path);
-  AllocationTraceNode* root() { return &root_; }
-  unsigned next_node_id() { return next_node_id_++; }
-  void Print(AllocationTracker* tracker);
-
- private:
-  unsigned next_node_id_;
-  AllocationTraceNode root_;
-
-  DISALLOW_COPY_AND_ASSIGN(AllocationTraceTree);
-};
-
-
-class AllocationTracker {
- public:
-  struct FunctionInfo {
-    FunctionInfo();
-    const char* name;
-    const char* script_name;
-    int script_id;
-    int line;
-    int column;
-  };
-
-  AllocationTracker(HeapObjectsMap* ids, StringsStorage* names);
-  ~AllocationTracker();
-
-  void PrepareForSerialization();
-  void NewObjectEvent(Address addr, int size);
-
-  AllocationTraceTree* trace_tree() { return &trace_tree_; }
-  HashMap* id_to_function_info() { return &id_to_function_info_; }
-  FunctionInfo* GetFunctionInfo(SnapshotObjectId id);
-
- private:
-  void AddFunctionInfo(SharedFunctionInfo* info, SnapshotObjectId id);
-
-  class UnresolvedLocation {
-   public:
-    UnresolvedLocation(Script* script, int start, FunctionInfo* info);
-    ~UnresolvedLocation();
-    void Resolve();
-
-   private:
-    static void HandleWeakScript(v8::Isolate* isolate,
-                                 v8::Persistent<v8::Value>* obj,
-                                 void* data);
-    Handle<Script> script_;
-    int start_position_;
-    FunctionInfo* info_;
-  };
-  static void DeleteUnresolvedLocation(UnresolvedLocation** location);
-
-  static const int kMaxAllocationTraceLength = 64;
-  HeapObjectsMap* ids_;
-  StringsStorage* names_;
-  AllocationTraceTree trace_tree_;
-  SnapshotObjectId allocation_trace_buffer_[kMaxAllocationTraceLength];
-  HashMap id_to_function_info_;
-  List<UnresolvedLocation*> unresolved_locations_;
-
-  DISALLOW_COPY_AND_ASSIGN(AllocationTracker);
-};
-
-} }  // namespace v8::internal
-
-#endif  // V8_ALLOCATION_TRACKER_H_
-