partitioner_test.cc 5.62 KB
Newer Older
Michael Schmid committed
1 2 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 29 30 31 32 33 34 35 36 37 38 39 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
/*
 * Copyright (c) 2014-2016, Siemens AG. All rights reserved.
 *
 * 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 <iostream>

#include <partitioner_test.h>

#include <embb/algorithms/internal/partition.h>

#include <vector>
#include <list>

PartitionerTest::PartitionerTest()
: partitioned_array_size_(16384) {
  // Size of array to be partitioned should be power of 2
  CreateUnit("TestBasic")
    .Add(&PartitionerTest::TestBasic, this);
  CreateUnit("TestLargeRange")
    .Pre(&PartitionerTest::TestLargeRangePre, this)
    .Add(&PartitionerTest::TestLargeRange, this)
    .Post(&PartitionerTest::TestLargeRangePost, this);
}

void PartitionerTest::TestBasic() {
  int A[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13};
  const int N = (sizeof(A) / sizeof(int) );

  embb::algorithms::internal::ChunkPartitioner< int* >
    partitioner(A, A + N, 5);
  PT_EXPECT_EQ_MSG(*(partitioner[0].GetFirst()), 1, "Get start iterator");
  PT_EXPECT_EQ_MSG(*(partitioner[0].GetLast()-1), 3, "Get end iterator");
  PT_EXPECT_EQ_MSG(*(partitioner[1].GetFirst()), 4, "Get start iterator");
  PT_EXPECT_EQ_MSG(*(partitioner[1].GetLast()-1), 6, "Get end iterator");
  PT_EXPECT_EQ_MSG(*(partitioner[2].GetFirst()), 7, "Get start iterator");
  PT_EXPECT_EQ_MSG(*(partitioner[2].GetLast()-1), 9, "Get end iterator");
  PT_EXPECT_EQ_MSG(*(partitioner[3].GetFirst()), 10, "Get start iterator");
  PT_EXPECT_EQ_MSG(*(partitioner[3].GetLast()-1), 11, "Get end iterator");
  PT_EXPECT_EQ_MSG(*(partitioner[4].GetFirst()), 12, "Get start iterator");
  PT_EXPECT_EQ_MSG(*(partitioner[4].GetLast()-1), 13, "Get end iterator");

  PT_EXPECT_EQ_MSG(partitioner.Size(), size_t(5), "Check count of partitions");

  embb::algorithms::internal::BlockSizePartitioner< int* >
    partitioner2(A, A + N, 5);

  PT_EXPECT_EQ_MSG(*(partitioner2[0].GetFirst()), 1, "Get start iterator");
  PT_EXPECT_EQ_MSG(*(partitioner2[0].GetLast() - 1), 5, "Get end iterator");
  PT_EXPECT_EQ_MSG(*(partitioner2[1].GetFirst()), 6, "Get start iterator");
  PT_EXPECT_EQ_MSG(*(partitioner2[1].GetLast() - 1), 10, "Get end iterator");
  PT_EXPECT_EQ_MSG(*(partitioner2[2].GetFirst()), 11, "Get start iterator");
  PT_EXPECT_EQ_MSG(*(partitioner2[2].GetLast() - 1), 13, "Get end iterator");

  PT_EXPECT_EQ_MSG(partitioner2.Size(), size_t(3), "Check count of partitions");
}

void PartitionerTest::TestLargeRangePre() {
  partitioned_array_ = new int[partitioned_array_size_];
  for (size_t i = 0; i < partitioned_array_size_; ++i) {
    partitioned_array_[i] = static_cast<int>(i);
  }
}

void PartitionerTest::TestLargeRangePost() {
  delete[] partitioned_array_;
}

void PartitionerTest::TestLargeRange() {
  // Test chunk partitioner with increasing number of chunks:
  for (size_t num_chunks = 2;
       num_chunks < partitioned_array_size_;
       num_chunks *= 2) {
    embb::algorithms::internal::ChunkPartitioner<int *>
      chunk_partitioner(
      partitioned_array_,
      partitioned_array_ + partitioned_array_size_,
      num_chunks);
    int last_value_prev = -1;
    PT_EXPECT_EQ(num_chunks, chunk_partitioner.Size());
    // Iterate over chunks in partition:
    for (size_t chunk = 0; chunk < chunk_partitioner.Size(); ++chunk) {
      int first_value = *(chunk_partitioner[chunk].GetFirst());
      int last_value  = *(chunk_partitioner[chunk].GetLast() - 1);
      PT_EXPECT_LT(first_value, last_value);
      // Test seams between chunks: chunk[i].last + 1 == chunk[i+1].first
      PT_EXPECT_EQ((last_value_prev + 1), first_value);
      last_value_prev = last_value;
    }
  }
  // Test block size partitioner with increasing chunk size:
  for (size_t block_size = 1;
       block_size < partitioned_array_size_;
       block_size *= 2) {
    embb::algorithms::internal::BlockSizePartitioner<int *>
      chunk_partitioner(
      partitioned_array_,
      partitioned_array_ + partitioned_array_size_,
      block_size);
    int last_value_prev = -1;
    // Iterate over chunks in partition:
    for (size_t chunk = 0; chunk < chunk_partitioner.Size(); ++chunk) {
      int first_value = *(chunk_partitioner[chunk].GetFirst());
      int last_value  = *(chunk_partitioner[chunk].GetLast() - 1);
      if (block_size == 1) {
        PT_EXPECT_EQ(first_value, last_value);
      } else {
        PT_EXPECT_LT(first_value, last_value);
      }
      // Test seams between chunks: chunk[i].last + 1 == chunk[i+1].first
      PT_EXPECT_EQ((last_value_prev + 1), first_value);
      last_value_prev = last_value;
    }
  }
}