kc3-lang/angle/src/tests/perf_tests/ResultPerf.cpp

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• Hash : 4fef7738
  Author :
  Date : 2018-05-29T15:21:41
  

  Add perf test for Error/Result class.
  
  This is a performance test that stresses the Error class. It also is
  used in tests for the new Result class.
  
  Bug: angleproject:2575
  Change-Id: Ie23c2a1ea74108d2ba72bf26f1db04e14f7eda64
  Reviewed-on: https://chromium-review.googlesource.com/1077129
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/tests/perf_tests/ResultPerf.cpp

• //
  // Copyright 2018 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // ResultPerf:
  //   Performance test for ANGLE's Error result class.
  //
  
  #include "ANGLEPerfTest.h"
  #include "libANGLE/Error.h"
  
  volatile int gThing = 0;
  
  namespace
  {
  constexpr int kIterations = 1000;
  
  class ResultPerfTest : public ANGLEPerfTest
  {
    public:
      ResultPerfTest();
      void step() override;
  };
  
  ResultPerfTest::ResultPerfTest() : ANGLEPerfTest("ResultPerf", "_run")
  {
  }
  
  ANGLE_NOINLINE gl::Error ExternalCall()
  {
      if (gThing != 0)
      {
          printf("Something very slow");
          return gl::Error(GL_INVALID_OPERATION);
      }
      else
      {
          return gl::NoError();
      }
  }
  
  gl::Error CallReturningResult(int depth)
  {
      ANGLE_TRY(ExternalCall());
      ANGLE_TRY(ExternalCall());
      ANGLE_TRY(ExternalCall());
      ANGLE_TRY(ExternalCall());
      ANGLE_TRY(ExternalCall());
      ANGLE_TRY(ExternalCall());
      ANGLE_TRY(ExternalCall());
      ANGLE_TRY(ExternalCall());
      ANGLE_TRY(ExternalCall());
      return ExternalCall();
  }
  
  void ResultPerfTest::step()
  {
      for (int i = 0; i < kIterations; i++)
      {
          (void)CallReturningResult(0);
          (void)CallReturningResult(0);
          (void)CallReturningResult(0);
          (void)CallReturningResult(0);
          (void)CallReturningResult(0);
      }
  }
  
  TEST_F(ResultPerfTest, Run)
  {
      run();
  }
  }  // anonymous namespace
  

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