QUIC - use size_t for kMaxInitialRoundTripTimeUs.
[chromium-blink-merge.git] / media / base / vector_math_perftest.cc
blob78699c3d701d842431998a28e15ef9b4a6083c19
1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "base/cpu.h"
6 #include "base/memory/aligned_memory.h"
7 #include "base/memory/scoped_ptr.h"
8 #include "base/time/time.h"
9 #include "media/base/vector_math.h"
10 #include "media/base/vector_math_testing.h"
11 #include "testing/gtest/include/gtest/gtest.h"
12 #include "testing/perf/perf_test.h"
14 using base::TimeTicks;
15 using std::fill;
17 namespace media {
19 static const int kBenchmarkIterations = 200000;
20 static const float kScale = 0.5;
21 static const int kVectorSize = 8192;
23 class VectorMathPerfTest : public testing::Test {
24 public:
25 VectorMathPerfTest() {
26 // Initialize input and output vectors.
27 input_vector_.reset(static_cast<float*>(base::AlignedAlloc(
28 sizeof(float) * kVectorSize, vector_math::kRequiredAlignment)));
29 output_vector_.reset(static_cast<float*>(base::AlignedAlloc(
30 sizeof(float) * kVectorSize, vector_math::kRequiredAlignment)));
31 fill(input_vector_.get(), input_vector_.get() + kVectorSize, 1.0f);
32 fill(output_vector_.get(), output_vector_.get() + kVectorSize, 0.0f);
35 void RunBenchmark(void (*fn)(const float[], float, int, float[]),
36 bool aligned,
37 const std::string& test_name,
38 const std::string& trace_name) {
39 TimeTicks start = TimeTicks::HighResNow();
40 for (int i = 0; i < kBenchmarkIterations; ++i) {
41 fn(input_vector_.get(),
42 kScale,
43 kVectorSize - (aligned ? 0 : 1),
44 output_vector_.get());
46 double total_time_seconds = (TimeTicks::HighResNow() - start).InSecondsF();
47 perf_test::PrintResult(test_name,
48 "",
49 trace_name,
50 kBenchmarkIterations / total_time_seconds,
51 "runs/s",
52 true);
55 protected:
56 scoped_ptr_malloc<float, base::ScopedPtrAlignedFree> input_vector_;
57 scoped_ptr_malloc<float, base::ScopedPtrAlignedFree> output_vector_;
59 DISALLOW_COPY_AND_ASSIGN(VectorMathPerfTest);
62 // Define platform independent function name for FMAC* perf tests.
63 #if defined(ARCH_CPU_X86_FAMILY)
64 #define FMAC_FUNC FMAC_SSE
65 #elif defined(ARCH_CPU_ARM_FAMILY) && defined(USE_NEON)
66 #define FMAC_FUNC FMAC_NEON
67 #endif
69 // Benchmark for each optimized vector_math::FMAC() method.
70 TEST_F(VectorMathPerfTest, FMAC) {
71 // Benchmark FMAC_C().
72 RunBenchmark(
73 vector_math::FMAC_C, true, "vector_math_fmac", "unoptimized");
74 #if defined(FMAC_FUNC)
75 #if defined(ARCH_CPU_X86_FAMILY)
76 ASSERT_TRUE(base::CPU().has_sse());
77 #endif
78 // Benchmark FMAC_FUNC() with unaligned size.
79 ASSERT_NE((kVectorSize - 1) % (vector_math::kRequiredAlignment /
80 sizeof(float)), 0U);
81 RunBenchmark(
82 vector_math::FMAC_FUNC, false, "vector_math_fmac", "optimized_unaligned");
83 // Benchmark FMAC_FUNC() with aligned size.
84 ASSERT_EQ(kVectorSize % (vector_math::kRequiredAlignment / sizeof(float)),
85 0U);
86 RunBenchmark(
87 vector_math::FMAC_FUNC, true, "vector_math_fmac", "optimized_aligned");
88 #endif
91 #undef FMAC_FUNC
93 // Define platform independent function name for FMULBenchmark* tests.
94 #if defined(ARCH_CPU_X86_FAMILY)
95 #define FMUL_FUNC FMUL_SSE
96 #elif defined(ARCH_CPU_ARM_FAMILY) && defined(USE_NEON)
97 #define FMUL_FUNC FMUL_NEON
98 #endif
100 // Benchmark for each optimized vector_math::FMUL() method.
101 TEST_F(VectorMathPerfTest, FMUL) {
102 // Benchmark FMUL_C().
103 RunBenchmark(
104 vector_math::FMUL_C, true, "vector_math_fmul", "unoptimized");
105 #if defined(FMUL_FUNC)
106 #if defined(ARCH_CPU_X86_FAMILY)
107 ASSERT_TRUE(base::CPU().has_sse());
108 #endif
109 // Benchmark FMUL_FUNC() with unaligned size.
110 ASSERT_NE((kVectorSize - 1) % (vector_math::kRequiredAlignment /
111 sizeof(float)), 0U);
112 RunBenchmark(
113 vector_math::FMUL_FUNC, false, "vector_math_fmac", "optimized_unaligned");
114 // Benchmark FMUL_FUNC() with aligned size.
115 ASSERT_EQ(kVectorSize % (vector_math::kRequiredAlignment / sizeof(float)),
116 0U);
117 RunBenchmark(
118 vector_math::FMUL_FUNC, true, "vector_math_fmac", "optimized_aligned");
119 #endif
122 #undef FMUL_FUNC
124 } // namespace media