src/tests/servers/app/benchmark/RandomLineTest.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 "RandomLineTest.h"
   7
   8 #include <stdio.h>
   9
  10 #include <View.h>
  11
  12 #include "TestSupport.h"
  13
  14
  15 RandomLineTest::RandomLineTest()
  16         : Test(),
  17           fTestDuration(0),
  18           fTestStart(-1),
  19
  20           fLinesRendered(0),
  21           fLinesPerIteration(100),
  22
  23           fIterations(0),
  24           fMaxIterations(1500),
  25
  26           fViewBounds(0, 0, -1, -1)
  27 {
  28 }
  29
  30
  31 RandomLineTest::~RandomLineTest()
  32 {
  33 }
  34
  35
  36 void
  37 RandomLineTest::Prepare(BView* view)
  38 {
  39         fViewBounds = view->Bounds();
  40
  41         fTestDuration = 0;
  42         fLinesRendered = 0;
  43         fIterations = 0;
  44         fTestStart = system_time();
  45 }
  46
  47 bool
  48 RandomLineTest::RunIteration(BView* view)
  49 {
  50         bigtime_t now = system_time();
  51
  52         float vMiddle = (fViewBounds.top + fViewBounds.bottom) / 2;
  53
  54         for (uint32 i = 0; i < fLinesPerIteration; i++) {
  55                 view->SetHighColor(rand() % 255, rand() % 255, rand() % 255);
  56
  57                 BPoint a;
  58                 a.x = random_number_between(fViewBounds.left, fViewBounds.right);
  59                 a.y = random_number_between(fViewBounds.top, vMiddle);
  60                 BPoint b;
  61                 b.x = random_number_between(fViewBounds.left, fViewBounds.right);
  62                 b.y = random_number_between(vMiddle, fViewBounds.bottom);
  63
  64                 view->StrokeLine(a, b);
  65
  66                 fLinesRendered++;
  67         }
  68
  69         view->Sync();
  70
  71         fTestDuration += system_time() - now;
  72         fIterations++;
  73
  74         return fIterations < fMaxIterations;
  75 }
  76
  77
  78 void
  79 RandomLineTest::PrintResults(BView* view)
  80 {
  81         if (fTestDuration == 0) {
  82                 printf("Test was not run.\n");
  83                 return;
  84         }
  85         bigtime_t timeLeak = system_time() - fTestStart - fTestDuration;
  86
  87         Test::PrintResults(view);
  88
  89         printf("Lines per iteration: %lu\n", fLinesPerIteration);
  90         printf("Total lines rendered: %llu\n", fLinesRendered);
  91         printf("Lines per second: %.3f\n",
  92                 fLinesRendered * 1000000.0 / fTestDuration);
  93         printf("Average time between iterations: %.4f seconds.\n",
  94                 (float)timeLeak / fIterations / 1000000);
  95 }
  96
  97
  98 Test*
  99 RandomLineTest::CreateTest()
 100 {
 101         return new RandomLineTest();
 102 }
 103
 104