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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef TIME_PROFILER_H
#define TIME_PROFILER_H
#include <atomic>
#include <cstring> // memset
#include <string>
#include <deque>
#include <vector>
#include "System/Misc/SpringTime.h"
#include "System/Misc/NonCopyable.h"
#include "System/float3.h"
#include "System/UnorderedMap.hpp"
// disable this if you want minimal profiling
// (sim time is still measured because of game slowdown)
#define SCOPED_TIMER(name) ScopedTimer __scopedTimer(name);
#define SCOPED_SPECIAL_TIMER(name) ScopedTimer __scopedTimer(name, false, true)
#define SCOPED_MT_TIMER(name) ScopedMtTimer __scopedTimer(name);
class BasicTimer : public spring::noncopyable
{
public:
BasicTimer(const spring_time time): nameHash(0), startTime(time) {}
BasicTimer(const std::string& timerName);
BasicTimer(const char* timerName);
const std::string& GetName() const { return name; }
spring_time GetDuration() const;
protected:
const unsigned nameHash;
const spring_time startTime;
std::string name;
};
/**
* @brief Time profiling helper class
*
* Construct an instance of this class where you want to begin time measuring,
* and destruct it at the end (or let it be autodestructed).
*/
class ScopedTimer : public BasicTimer
{
public:
ScopedTimer(const std::string& timerName, bool _autoShowGraph = false, bool _specialTimer = false);
ScopedTimer(const char* timerName, bool _autoShowGraph = false, bool _specialTimer = false);
~ScopedTimer();
private:
const bool autoShowGraph;
const bool specialTimer;
};
class ScopedMtTimer : public BasicTimer
{
public:
ScopedMtTimer(const std::string& timerName, bool _autoShowGraph = false);
ScopedMtTimer(const char* timerName, bool _autoShowGraph = false);
~ScopedMtTimer();
private:
const bool autoShowGraph;
};
/**
* @brief print passed time to infolog
*/
class ScopedOnceTimer
{
public:
ScopedOnceTimer(const std::string& name);
ScopedOnceTimer(const char* name);
~ScopedOnceTimer();
spring_time GetDuration() const;
protected:
const spring_time startTime;
std::string name;
};
class CTimeProfiler
{
public:
CTimeProfiler();
~CTimeProfiler();
static CTimeProfiler& GetInstance();
float GetPercent(const char* name) const;
float GetPercentRaw(const char* name) const {
// do not default-create keys, breaks resorting
const auto it = profile.find(name);
if (it != profile.end())
return ((it->second).percent);
return 0.0f;
}
void ResetState();
void ToggleLock(bool lock);
void Update();
void UpdateRaw();
void ResortProfilesRaw();
void RefreshProfiles();
void RefreshProfilesRaw();
void SetEnabled(bool b) { enabled = b; }
void PrintProfilingInfo() const;
void AddTime(
const std::string& name,
const spring_time startTime,
const spring_time deltaTime,
const bool showGraph = false,
const bool specialTimer = false,
const bool threadTimer = false
);
void AddTimeRaw(
const std::string& name,
const spring_time startTime,
const spring_time deltaTime,
const bool showGraph,
const bool threadTimer
);
public:
struct TimeRecord {
TimeRecord()
: total(0.0f)
, current(0.0f)
, maxLag(0.0f)
, percent(0.0f)
, peak(0.0f)
, newPeak(false)
, newLagPeak(false)
, showGraph(false)
{
memset(frames, 0, sizeof(frames));
}
static constexpr unsigned numFrames = 128;
spring_time total;
spring_time current;
spring_time frames[numFrames];
float maxLag;
float percent;
float peak;
float3 color;
bool newPeak;
bool newLagPeak;
bool showGraph;
};
spring::unordered_map<std::string, TimeRecord> profile;
std::vector< std::pair<std::string, TimeRecord> > sortedProfile;
std::vector< std::deque< std::pair<spring_time, spring_time> > > threadProfile;
private:
spring_time lastBigUpdate;
/// increases each update, from 0 to (numFrames-1)
unsigned currentPosition;
unsigned resortProfiles;
// if false, AddTime is a no-op for (almost) all timers
std::atomic<bool> enabled;
};
#define profiler (CTimeProfiler::GetInstance())
#endif // TIME_PROFILER_H
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