src/v8/src/basic-block-profiler.h

   1 // Copyright 2014 the V8 project authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef V8_BASIC_BLOCK_PROFILER_H_
   6 #define V8_BASIC_BLOCK_PROFILER_H_
   7
   8 #include <iosfwd>
   9 #include <list>
  10 #include <string>
  11
  12 #include "src/v8.h"
  13
  14 namespace v8 {
  15 namespace internal {
  16
  17 class Schedule;
  18 class Graph;
  19
  20 class BasicBlockProfiler {
  21  public:
  22   class Data {
  23    public:
  24     size_t n_blocks() const { return n_blocks_; }
  25     const uint32_t* counts() const { return &counts_[0]; }
  26
  27     void SetCode(std::ostringstream* os);
  28     void SetFunctionName(std::ostringstream* os);
  29     void SetSchedule(std::ostringstream* os);
  30     void SetBlockId(size_t offset, size_t block_id);
  31     uint32_t* GetCounterAddress(size_t offset);
  32
  33    private:
  34     friend class BasicBlockProfiler;
  35     friend std::ostream& operator<<(std::ostream& os,
  36                                     const BasicBlockProfiler::Data& s);
  37
  38     explicit Data(size_t n_blocks);
  39     ~Data();
  40
  41     void ResetCounts();
  42
  43     const size_t n_blocks_;
  44     std::vector<size_t> block_ids_;
  45     std::vector<uint32_t> counts_;
  46     std::string function_name_;
  47     std::string schedule_;
  48     std::string code_;
  49     DISALLOW_COPY_AND_ASSIGN(Data);
  50   };
  51
  52   typedef std::list<Data*> DataList;
  53
  54   BasicBlockProfiler();
  55   ~BasicBlockProfiler();
  56
  57   Data* NewData(size_t n_blocks);
  58   void ResetCounts();
  59
  60   const DataList* data_list() { return &data_list_; }
  61
  62  private:
  63   friend std::ostream& operator<<(std::ostream& os,
  64                                   const BasicBlockProfiler& s);
  65
  66   DataList data_list_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(BasicBlockProfiler);
  69 };
  70
  71 std::ostream& operator<<(std::ostream& os, const BasicBlockProfiler& s);
  72 std::ostream& operator<<(std::ostream& os, const BasicBlockProfiler::Data& s);
  73
  74 }  // namespace internal
  75 }  // namespace v8
  76
  77 #endif  // V8_BASIC_BLOCK_PROFILER_H_