sk_gpu_test::GpuTimer Class Reference

#include <GpuTimer.h>

Public Types
enum class	QueryStatus { kInvalid , kPending , kDisjoint , kAccurate }

Public Member Functions
	GpuTimer (bool disjointSupport)
virtual	~GpuTimer ()
bool	disjointSupport () const
void	queueStart ()
PlatformTimerQuery	queueStop ()
virtual QueryStatus	checkQueryStatus (PlatformTimerQuery)=0
virtual std::chrono::nanoseconds	getTimeElapsed (PlatformTimerQuery)=0
virtual void	deleteQuery (PlatformTimerQuery)=0

Private Member Functions
virtual PlatformTimerQuery	onQueueTimerStart () const =0
virtual void	onQueueTimerStop (PlatformTimerQuery) const =0

Detailed Description

Platform-independent interface for timing operations on the GPU.

Definition at line 23 of file GpuTimer.h.

Member Enumeration Documentation

QueryStatus

enum class sk_gpu_test::GpuTimer::QueryStatus

strong

Enumerator
kInvalid
kPending
kDisjoint
kAccurate

Definition at line 56 of file GpuTimer.h.

                           {
        kInvalid,  //<! the timer query is invalid.
        kPending,  //<! the timer is still running on the GPU.
        kDisjoint, //<! the query is complete, but dubious due to disjoint GPU operations.
        kAccurate  //<! the query is complete and reliable.
    };

Constructor & Destructor Documentation

GpuTimer()

sk_gpu_test::GpuTimer::GpuTimer ( bool  disjointSupport )

inline

Definition at line 25 of file GpuTimer.h.

        : fDisjointSupport(disjointSupport)
        , fActiveTimer(kInvalidTimerQuery) {
    }

~GpuTimer()

virtual sk_gpu_test::GpuTimer::~GpuTimer ( )

inlinevirtual

Definition at line 29 of file GpuTimer.h.

{ SkASSERT(!fActiveTimer); }

Member Function Documentation

checkQueryStatus()

virtual QueryStatus sk_gpu_test::GpuTimer::checkQueryStatus ( PlatformTimerQuery  )

pure virtual

deleteQuery()

virtual void sk_gpu_test::GpuTimer::deleteQuery ( PlatformTimerQuery  )

pure virtual

disjointSupport()

bool sk_gpu_test::GpuTimer::disjointSupport ( ) const

inline

Returns whether this timer can detect disjoint GPU operations while timing. If false, a query has less confidence when it completes with QueryStatus::kAccurate.

Definition at line 35 of file GpuTimer.h.

{ return fDisjointSupport; }

getTimeElapsed()

virtual std::chrono::nanoseconds sk_gpu_test::GpuTimer::getTimeElapsed ( PlatformTimerQuery  )

pure virtual

onQueueTimerStart()

virtual PlatformTimerQuery sk_gpu_test::GpuTimer::onQueueTimerStart ( ) const

privatepure virtual

onQueueTimerStop()

virtual void sk_gpu_test::GpuTimer::onQueueTimerStop ( PlatformTimerQuery  ) const

privatepure virtual

queueStart()

void sk_gpu_test::GpuTimer::queueStart ( )

inline

Inserts a "start timing" command in the GPU command stream.

Definition at line 40 of file GpuTimer.h.

                      {
        SkASSERT(!fActiveTimer);
        fActiveTimer = this->onQueueTimerStart();
    }

queueStop()

PlatformTimerQuery sk_gpu_test::GpuTimer::queueStop ( )

inline

Inserts a "stop timing" command in the GPU command stream.

Returns

a query object that can retrieve the time elapsed once the timer has completed.

Definition at line 50 of file GpuTimer.h.

                                                 {
        SkASSERT(fActiveTimer);
        this->onQueueTimerStop(fActiveTimer);
        return std::exchange(fActiveTimer, kInvalidTimerQuery);
    }

---

The documentation for this class was generated from the following file:

• third_party/skia/tools/gpu/GpuTimer.h