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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_ARC_TRACING_ARC_SYSTEM_MODEL_H_
#define CHROME_BROWSER_ASH_ARC_TRACING_ARC_SYSTEM_MODEL_H_
#include <map>
#include <string>
#include "base/values.h"
#include "chrome/browser/ash/arc/tracing/arc_cpu_event.h"
#include "chrome/browser/ash/arc/tracing/arc_value_event.h"
namespace arc {
// Contains information about system activity and involved threads. System
// activity includes CPU and memory events.
class ArcSystemModel {
public:
static constexpr int kUnknownPid = -1;
struct ThreadInfo {
ThreadInfo();
ThreadInfo(int pid, const std::string& name);
bool operator==(const ThreadInfo& other) const;
// Process id or |kUnknownPid| if unknown.
int pid = kUnknownPid;
// Name of thread of process in case thread is main thread of the process.
std::string name;
};
using ThreadMap = std::map<int, ThreadInfo>;
ArcSystemModel();
ArcSystemModel(const ArcSystemModel&) = delete;
ArcSystemModel& operator=(const ArcSystemModel&) = delete;
~ArcSystemModel();
void Reset();
// Trims the model using |trim_timestamp|. Events before
// |trim_timestamp| are consolidated with their timestamps aligned
// to |trim_timestamp|. Events on or after |trim_timestamp| are left
// in the model unchanged.
void Trim(uint64_t trim_timestamp);
// Closes range for each value event type by extending the latest value till
// the |max_timestamp|.
void CloseRangeForValueEvents(uint64_t max_timestamp);
void CopyFrom(const ArcSystemModel& other);
base::Value::Dict Serialize() const;
bool Load(const base::Value* root);
bool operator==(const ArcSystemModel& other) const;
ThreadMap& thread_map() { return thread_map_; }
const ThreadMap& thread_map() const { return thread_map_; }
AllCpuEvents& all_cpu_events() { return all_cpu_events_; }
const AllCpuEvents& all_cpu_events() const { return all_cpu_events_; }
ValueEvents& memory_events() { return memory_events_; }
const ValueEvents& memory_events() const { return memory_events_; }
private:
ThreadMap thread_map_;
AllCpuEvents all_cpu_events_;
// TODO(khmel): For simplification and performance use separate channels
// for each event type.
ValueEvents memory_events_;
};
} // namespace arc
#endif // CHROME_BROWSER_ASH_ARC_TRACING_ARC_SYSTEM_MODEL_H_
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