Target Struct Reference

#include <nanobench.h>

Inheritance diagram for Target:

Public Member Functions
	Target (const Config &c)
virtual	~Target ()
void	setup ()
virtual void	onSetup ()
virtual SkCanvas *	beginTiming (SkCanvas *canvas)
virtual void	endTiming ()
virtual void	submitWorkAndSyncCPU ()
virtual bool	needsFrameTiming (int *frameLag) const
virtual bool	init (SkImageInfo info, Benchmark *bench)
virtual bool	capturePixels (SkBitmap *bmp)
virtual void	dumpStats ()
SkCanvas *	getCanvas () const

Public Attributes
const Config	config
sk_sp< SkSurface >	surface

Detailed Description

Definition at line 36 of file nanobench.h.

Constructor & Destructor Documentation

Target()

Target::Target ( const Config &  c )

inlineexplicit

Definition at line 37 of file nanobench.h.

: config(c) { }

~Target()

virtual Target::~Target ( )

inlinevirtual

Definition at line 38 of file nanobench.h.

{ }

Member Function Documentation

beginTiming()

virtual SkCanvas * Target::beginTiming ( SkCanvas *  canvas )

inlinevirtual

Called after the clock timer is started, before the benchmark is drawn. Most back ends just return the canvas passed in, but some may replace it.

Definition at line 54 of file nanobench.h.

{ return canvas; }

capturePixels()

bool Target::capturePixels ( SkBitmap *  bmp )

virtual

Stores any pixels drawn to the screen in the bitmap. Returns false on error.

Definition at line 231 of file nanobench.cpp.

                                        {
    SkCanvas* canvas = this->getCanvas();
    if (!canvas) {
        return false;
    }
    bmp->allocPixels(canvas->imageInfo());
    if (!canvas->readPixels(*bmp, 0, 0)) {
        SkDebugf("Can't read canvas pixels.\n");
        return false;
    }
    return true;
}

dumpStats()

virtual void Target::dumpStats ( )

inlinevirtual

Writes gathered stats using SkDebugf.

Reimplemented in GPUTarget.

Definition at line 79 of file nanobench.h.

{}

endTiming()

virtual void Target::endTiming ( )

inlinevirtual

Called after a benchmark is drawn, but before the clock timer is stopped.

Reimplemented in GPUTarget.

Definition at line 58 of file nanobench.h.

{ }

getCanvas()

SkCanvas * Target::getCanvas ( ) const

inline

Definition at line 81 of file nanobench.h.

                                {
        if (!surface) {
            return nullptr;
        }
        return surface->getCanvas();
    }

init()

bool Target::init ( SkImageInfo  info, Benchmark *  bench  )

virtual

Called once per target, during program initialization. Returns false if initialization fails.

Reimplemented in GPUTarget.

Definition at line 222 of file nanobench.cpp.

                                                    {
    if (Benchmark::Backend::kRaster == config.backend) {
        this->surface = SkSurfaces::Raster(info);
        if (!this->surface) {
            return false;
        }
    }
    return true;
}

needsFrameTiming()

virtual bool Target::needsFrameTiming ( int *  frameLag ) const

inlinevirtual

CPU-like targets can just be timed, but GPU-like targets need to pay attention to frame boundaries or other similar details.

Reimplemented in GPUTarget.

Definition at line 68 of file nanobench.h.

{ return false; }

onSetup()

virtual void Target::onSetup ( )

inlinevirtual

Reimplemented in GPUTarget.

Definition at line 49 of file nanobench.h.

{ }

setup()

void Target::setup ( )

inline

Called once per target, immediately before any timing or drawing.

Definition at line 44 of file nanobench.h.

                 {
        this->onSetup();
        // Make sure we're done with setup work before we start timing.
        this->submitWorkAndSyncCPU();
    }

submitWorkAndSyncCPU()

virtual void Target::submitWorkAndSyncCPU ( )

inlinevirtual

Called between benchmarks (or between calibration and measured runs) to make sure all pending work in drivers / threads is complete.

Reimplemented in GPUTarget.

Definition at line 63 of file nanobench.h.

{ }

Member Data Documentation

config

const Config Target::config

Definition at line 40 of file nanobench.h.

surface

sk_sp<SkSurface> Target::surface

Definition at line 41 of file nanobench.h.

---

The documentation for this struct was generated from the following files:

• third_party/skia/bench/nanobench.h
• third_party/skia/bench/nanobench.cpp