compilation-statistics.h

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// Copyright 2014 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_DIAGNOSTICS_COMPILATION_STATISTICS_H_
#define V8_DIAGNOSTICS_COMPILATION_STATISTICS_H_
 
#include <map>
#include <string>
 
#include "src/base/platform/mutex.h"
#include "src/base/platform/time.h"
#include "src/utils/allocation.h"
 
namespace v8 {
namespace internal {
 
class OptimizedCompilationInfo;
class CompilationStatistics;
 
struct AsPrintableStatistics {
  const char* compiler;
  CompilationStatistics& s;
  const bool machine_output;
};
 
class CompilationStatistics final : public Malloced {
 public:
  CompilationStatistics() = default;
  CompilationStatistics(const CompilationStatistics&) = delete;
  CompilationStatistics& operator=(const CompilationStatistics&) = delete;
 
  class BasicStats {
   public:
    void Accumulate(const BasicStats& stats);
 
    std::string AsJSON();
 
    base::TimeDelta delta_;
    size_t total_allocated_bytes_ = 0;
    size_t max_allocated_bytes_ = 0;
    size_t absolute_max_allocated_bytes_ = 0;
    size_t input_graph_size_ = 0;
    size_t output_graph_size_ = 0;
    std::string function_name_;
  };
 
  void RecordPhaseStats(const char* phase_kind_name, const char* phase_name,
                        const BasicStats& stats);
 
  void RecordPhaseKindStats(const char* phase_kind_name,
                            const BasicStats& stats);
 
  void RecordTotalStats(const BasicStats& stats);
 
 private:
  class TotalStats : public BasicStats {
   public:
    TotalStats() : source_size_(0), count_(0) {}
    uint64_t source_size_;
    size_t count_;
  };
 
  class OrderedStats : public BasicStats {
   public:
    explicit OrderedStats(size_t insert_order) : insert_order_(insert_order) {}
    size_t insert_order_;
  };
 
  class PhaseStats : public OrderedStats {
   public:
    PhaseStats(size_t insert_order, const char* phase_kind_name)
        : OrderedStats(insert_order), phase_kind_name_(phase_kind_name) {}
    std::string phase_kind_name_;
  };
 
  friend std::ostream& operator<<(std::ostream& os,
                                  const AsPrintableStatistics& s);
 
  using PhaseKindStats = OrderedStats;
  using PhaseKindMap = std::map<std::string, PhaseKindStats>;
  using PhaseMap = std::map<std::string, PhaseStats>;
 
  TotalStats total_stats_;
  PhaseKindMap phase_kind_map_;
  PhaseMap phase_map_;
  base::Mutex access_mutex_;
};
 
std::ostream& operator<<(std::ostream& os, const AsPrintableStatistics& s);
 
}  // namespace internal
}  // namespace v8
 
#endif  // V8_DIAGNOSTICS_COMPILATION_STATISTICS_H_