vm_tools/sommelier/sommelier-timing.h

// Copyright 2021 The Chromium OS 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 VM_TOOLS_SOMMELIER_SOMMELIER_TIMING_H_
#define VM_TOOLS_SOMMELIER_SOMMELIER_TIMING_H_

#include <unordered_map>
#include <vector>

class Timing {
 public:
  explicit Timing(const char* fname);
  void UpdateLastAttach(int surface_id, int buffer_id);
  void UpdateLastCommit(int surface_id);
  void UpdateLastRelease(int buffer_id);
  void OutputLog();

 private:
  struct BufferAction {
    enum Type { UNKNOWN, ATTACH, COMMIT, RELEASE };
    timespec time;
    int surface_id;
    int buffer_id;
    Type action_type;
    BufferAction() : surface_id(-1), buffer_id(-1), action_type(UNKNOWN) {}
    explicit BufferAction(timespec t,
                          int sid = -1,
                          int bid = -1,
                          Type type = UNKNOWN)
        : time(t), surface_id(sid), buffer_id(bid), action_type(type) {}
  };

  std::vector<BufferAction> actions;
  int64_t actions_idx = 0;
  int saves = 0;
  const char* filename;
};      // class Timing
#endif  // VM_TOOLS_SOMMELIER_SOMMELIER_TIMING_H_