reduce_test.cc 7.86 KB
Newer Older
1
/*
Marcus Winter committed
2
 * Copyright (c) 2014-2016, Siemens AG. All rights reserved.
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <reduce_test.h>
#include <embb/algorithms/reduce.h>
29
#include <embb/tasks/execution_policy.h>
30 31 32 33 34 35 36 37 38
#include <deque>
#include <vector>
#include <functional>

/**
 * Functor to compute the square of a number.
 */
struct Square {
  template<typename Type>
39
  Type operator()(Type& l) const {
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165
    return l * l;
  }
};

static int SquareFunction(int &val) {
  return val * val;
}

static int AddFunction(int lhs, int rhs) {
  return lhs + rhs;
}

ReduceTest::ReduceTest() {
  CreateUnit("Different data structures")
      .Add(&ReduceTest::TestDataStructures, this);
  CreateUnit("Transform").Add(&ReduceTest::TestTransform, this);
  CreateUnit("Function Pointers").Add(&ReduceTest::TestFunctionPointers, this);
  CreateUnit("Ranges").Add(&ReduceTest::TestRanges, this);
  CreateUnit("Block sizes").Add(&ReduceTest::TestBlockSizes, this);
  CreateUnit("Policies").Add(&ReduceTest::TestPolicy, this);
  CreateUnit("Stress test").Add(&ReduceTest::StressTest, this);
}

void ReduceTest::TestDataStructures() {
  using embb::algorithms::Reduce;
  int sum = 0;
  int array[kCountSize];
  std::vector<double> vector(kCountSize);
  std::deque<int> deque(kCountSize);
  for (size_t i = 0; i < kCountSize; i++) {
    array[i] = static_cast<int>(i+2);
    vector[i] = static_cast<int>(i+2);
    deque[i] = static_cast<int>(i+2);
    sum += static_cast<int>(i + 2);
  }

  PT_EXPECT_EQ(Reduce(array, array + kCountSize, 0, std::plus<int>()), sum);
  PT_EXPECT_EQ(Reduce(vector.begin(), vector.end(), static_cast<double>(0),
               std::plus<double>()), sum);
  PT_EXPECT_EQ(Reduce(deque.begin(), deque.end(), 0, std::plus<int>()), sum);
}

void ReduceTest::TestTransform() {
  using embb::algorithms::Reduce;
  int sum = 0;
  std::vector<int> vector(kCountSize);
  for (size_t i = 0; i < kCountSize; i++) {
    vector[i] = static_cast<int>(i+2);
    sum += static_cast<int>((i + 2) * (i + 2));
  }

  PT_EXPECT_EQ(Reduce(vector.begin(), vector.end(), 0, std::plus<int>(),
               Square()), sum);
}

void ReduceTest::TestFunctionPointers() {
  using embb::algorithms::Reduce;
  std::vector<int> vector(kCountSize);
  int sum = 0;
  int sqr_sum = 0;
  for (size_t i = 0; i < kCountSize; i++) {
    vector[i] = static_cast<int>(i + 2);
    sum += static_cast<int>(i + 2);
    sqr_sum += static_cast<int>((i + 2) * (i + 2));
  }
  PT_EXPECT_EQ(Reduce(vector.begin(), vector.end(), 0, &AddFunction), sum);
  PT_EXPECT_EQ(Reduce(vector.begin(), vector.end(), 0, &AddFunction,
                      &SquareFunction), sqr_sum);
  PT_EXPECT_EQ(Reduce(vector.begin(), vector.end(), 0, std::plus<int>(),
                      &SquareFunction), sqr_sum);
  PT_EXPECT_EQ(Reduce(vector.begin(), vector.end(), 0, &AddFunction,
                      Square()), sqr_sum);
}

void ReduceTest::TestRanges() {
  using embb::algorithms::Reduce;
  size_t count = 4;
  int sum = 0;
  std::vector<int> init(count);
  std::vector<int> vector(count);
  for (size_t i = 0; i < count; i++) {
    init[i] = static_cast<int>(i+2);
    sum += static_cast<int>(i + 2);
  }
  vector = init;

  // Ommit first element
  PT_EXPECT_EQ(Reduce(vector.begin() + 1, vector.end(), 0, std::plus<int>()),
               sum - vector[0]);
  // Ommit last element
  PT_EXPECT_EQ(Reduce(vector.begin(), vector.end() - 1, 0, std::plus<int>()),
               sum - vector[vector.size() - 1]);
  // Ommit first and last element
  PT_EXPECT_EQ(Reduce(vector.begin() + 1, vector.end() - 1, 0,
               std::plus<int>()), sum - vector[0] - vector[vector.size() - 1]);
  // Only do first element
  PT_EXPECT_EQ(Reduce(vector.begin(), vector.begin() + 1, 0, std::plus<int>()),
               vector[0]);
  // Only do last element
  PT_EXPECT_EQ(Reduce(vector.end() - 1, vector.end(), 0, std::plus<int>()),
               vector[vector.size() - 1]);
  // Only do second element
  PT_EXPECT_EQ(Reduce(vector.begin() + 1, vector.begin() + 2, 0,
               std::plus<int>()), vector[1]);
}

void ReduceTest::TestBlockSizes() {
  using embb::algorithms::Reduce;
  size_t count = 4;
  int sum = 0;
  std::vector<int> init(count);
  std::vector<int> vector(count);
  for (size_t i = 0; i < count; i++) {
    init[i] = static_cast<int>(i+2);
    sum += static_cast<int>(i + 2);
  }
  vector = init;

  for (size_t block_size = 1; block_size < count + 2; block_size++) {
    PT_EXPECT_EQ(Reduce(vector.begin(), vector.end(), 0, std::plus<int>()),
                 sum);
  }
}

void ReduceTest::TestPolicy() {
  using embb::algorithms::Reduce;
166
  using embb::tasks::ExecutionPolicy;
167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183
  using embb::algorithms::Identity;
  size_t count = 4;
  int sum = 0;
  std::vector<int> init(count);
  std::vector<int> vector(count);
  for (size_t i = 0; i < count; i++) {
    init[i] = static_cast<int>(i+2);
    sum += static_cast<int>(i + 2);
  }
  vector = init;

  PT_EXPECT_EQ(Reduce(vector.begin(), vector.end(), 0, std::plus<int>(),
               Identity(), ExecutionPolicy()), sum);
  PT_EXPECT_EQ(Reduce(vector.begin(), vector.end(), 0, std::plus<int>(),
               Identity(), ExecutionPolicy(true)), sum);
  PT_EXPECT_EQ(Reduce(vector.begin(), vector.end(), 0, std::plus<int>(),
               Identity(), ExecutionPolicy(true, 1)), sum);
184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208
  // Empty list should return neutral element:
  PT_EXPECT_EQ(Reduce(vector.begin(), vector.begin(), 41, std::plus<int>(),
               Identity(), ExecutionPolicy(true, 1)), 41);
#ifdef EMBB_USE_EXCEPTIONS
  bool empty_core_set_thrown = false;
  try {
    Reduce(vector.begin(), vector.end(), 0,
           std::plus<int>(), Identity(),
           ExecutionPolicy(false));
  } catch (embb::base::ErrorException &) {
    empty_core_set_thrown = true;
  }
  PT_EXPECT_MSG(empty_core_set_thrown,
    "Empty core set should throw ErrorException");
  bool negative_range_thrown = false;
  try {
    std::vector<int>::iterator second = vector.begin() + 1;
    Reduce(second, vector.begin(), 0, std::plus<int>());
  }
  catch (embb::base::ErrorException &) {
    negative_range_thrown = true;
  }
  PT_EXPECT_MSG(negative_range_thrown,
    "Negative range should throw ErrorException");
#endif
209 210 211 212
}

void ReduceTest::StressTest() {
  using embb::algorithms::Reduce;
213
  using embb::tasks::ExecutionPolicy;
214
  using embb::algorithms::Identity;
215
  size_t count = embb::tasks::Node::GetInstance().GetCoreCount() * 10;
216 217 218 219 220 221 222 223 224 225
  std::vector<int> large_vector(count);
  mtapi_int32_t expected = 0;
  for (size_t i = 0; i < count; i++) {
    large_vector[i] = static_cast<int>(i+2);
    expected += large_vector[i];
  }
  PT_EXPECT_EQ(Reduce(large_vector.begin(), large_vector.end(),
               mtapi_int32_t(0), std::plus<mtapi_int32_t>(), Identity(),
               ExecutionPolicy(), 1960), expected);
}