src/tests/servers/app/benchmark/VerticalLineTest.cpp

   1 /*
   2  * Copyright (C) 2008-2009 Stephan Aßmus <superstippi@gmx.de>
   3  * All rights reserved. Distributed under the terms of the MIT license.
   4  */
   5
   6 #include "VerticalLineTest.h"
   7
   8 #include <stdio.h>
   9
  10 #include <View.h>
  11
  12 #include "TestSupport.h"
  13
  14
  15 VerticalLineTest::VerticalLineTest()
  16         : Test(),
  17           fTestDuration(0),
  18           fTestStart(-1),
  19
  20           fLinesRendered(0),
  21
  22           fIterations(0),
  23           fMaxIterations(1500),
  24
  25           fViewBounds(0, 0, -1, -1)
  26 {
  27 }
  28
  29
  30 VerticalLineTest::~VerticalLineTest()
  31 {
  32 }
  33
  34
  35 void
  36 VerticalLineTest::Prepare(BView* view)
  37 {
  38         fViewBounds = view->Bounds();
  39
  40         fTestDuration = 0;
  41         fLinesRendered = 0;
  42         fIterations = 0;
  43         fTestStart = system_time();
  44 }
  45
  46 bool
  47 VerticalLineTest::RunIteration(BView* view)
  48 {
  49         float x = 1;
  50
  51         bigtime_t now = system_time();
  52
  53         while (true) {
  54                 view->StrokeLine(BPoint(x, fViewBounds.top + 1),
  55                         BPoint(x, fViewBounds.bottom - 1));
  56
  57                 fLinesRendered++;
  58
  59                 // offset text location
  60                 x += 2;
  61                 if (x > fViewBounds.right)
  62                         break;
  63         }
  64
  65         view->Sync();
  66
  67         fTestDuration += system_time() - now;
  68         fIterations++;
  69
  70         return fIterations < fMaxIterations;
  71 }
  72
  73
  74 void
  75 VerticalLineTest::PrintResults(BView* view)
  76 {
  77         if (fTestDuration == 0) {
  78                 printf("Test was not run.\n");
  79                 return;
  80         }
  81         bigtime_t timeLeak = system_time() - fTestStart - fTestDuration;
  82
  83         Test::PrintResults(view);
  84
  85         printf("Line height: %ld\n", fViewBounds.IntegerHeight() + 1 - 2);
  86         printf("Lines per iteration: %ld\n", fViewBounds.IntegerWidth() / 2);
  87         printf("Total lines rendered: %llu\n", fLinesRendered);
  88         printf("Lines per second: %.3f\n",
  89                 fLinesRendered * 1000000.0 / fTestDuration);
  90         printf("Average time between iterations: %.4f seconds.\n",
  91                 (float)timeLeak / fIterations / 1000000);
  92 }
  93
  94
  95 Test*
  96 VerticalLineTest::CreateTest()
  97 {
  98         return new VerticalLineTest();
  99 }
 100