1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "utilities/macros.hpp"
  27 #include "gc/parallel/psAdaptiveSizePolicy.hpp"
  28 #include "unittest.hpp"
  29 
  30 #if INCLUDE_ALL_GCS
  31 
  32   TEST_VM(gc, oldFreeSpaceCalculation) {
  33 
  34     struct TestCase {
  35         size_t live;
  36         uintx ratio;
  37         size_t expectedResult;
  38     };
  39 
  40     TestCase test_cases[] = {
  41                                 {100, 20, 25},
  42                                 {100, 50, 100},
  43                                 {100, 60, 150},
  44                                 {100, 75, 300},
  45                                 {400, 20, 100},
  46                                 {400, 50, 400},
  47                                 {400, 60, 600},
  48                                 {400, 75, 1200},
  49                             };
  50 
  51     size_t array_len = sizeof(test_cases) / sizeof(TestCase);
  52     for (size_t i = 0; i < array_len; ++i) {
  53       ASSERT_EQ(PSAdaptiveSizePolicy::calculate_free_based_on_live(
  54           test_cases[i].live, test_cases[i].ratio),
  55           test_cases[i].expectedResult)
  56           << " Calculation of free memory failed"
  57           << " - Test case " << i << ": live = " << test_cases[i].live
  58           << "; ratio = " << test_cases[i].ratio;
  59     }
  60   }
  61 #endif