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 #include "precompiled.hpp"
  25 #include "memory/resourceArea.hpp"
  26 #include "utilities/bitMap.inline.hpp"
  27 #include "unittest.hpp"
  28 
  29 class BitMapTest {
  30 
  31   template <class ResizableBitMapClass>
  32   static void fillBitMap(ResizableBitMapClass& map) {
  33     map.set_bit(1);
  34     map.set_bit(3);
  35     map.set_bit(17);
  36     map.set_bit(512);
  37   }
  38 
  39   template <class ResizableBitMapClass>
  40   static void testResize(BitMap::idx_t start_size) {
  41     ResourceMark rm;
  42 
  43     ResizableBitMapClass map(start_size);
  44     map.resize(BITMAP_SIZE);
  45     fillBitMap(map);
  46 
  47     ResizableBitMapClass map2(BITMAP_SIZE);
  48     fillBitMap(map2);    
  49     EXPECT_TRUE(map.is_same(map2)) << "With start_size " << start_size;
  50   }
  51 
  52  public:
  53   const static BitMap::idx_t BITMAP_SIZE = 1024;
  54 
  55 
  56   template <class ResizableBitMapClass>
  57   static void testResizeGrow() {    
  58     testResize<ResizableBitMapClass>(0);
  59     testResize<ResizableBitMapClass>(BITMAP_SIZE >> 3);
  60   }
  61 
  62   template <class ResizableBitMapClass>
  63   static void testResizeSame() {
  64     testResize<ResizableBitMapClass>(BITMAP_SIZE);
  65   }
  66 
  67   template <class ResizableBitMapClass>
  68   static void testResizeShrink() {
  69     testResize<ResizableBitMapClass>(BITMAP_SIZE * 2);
  70   }
  71 
  72   template <class InitializableBitMapClass>
  73   static void testInitialize() {
  74     ResourceMark rm;
  75 
  76     InitializableBitMapClass map;
  77     map.initialize(BITMAP_SIZE);
  78     fillBitMap(map);
  79 
  80     InitializableBitMapClass map2(BITMAP_SIZE);
  81     fillBitMap(map2);
  82     EXPECT_TRUE(map.is_same(map2));
  83   }
  84 
  85 
  86   static void testReinitialize(BitMap::idx_t init_size) {
  87     ResourceMark rm;
  88 
  89     ResourceBitMap map(init_size);
  90     map.reinitialize(BITMAP_SIZE);
  91     fillBitMap(map);
  92 
  93     ResourceBitMap map2(BITMAP_SIZE);
  94     fillBitMap(map2);
  95     EXPECT_TRUE(map.is_same(map2)) << "With init_size " << init_size;
  96   }
  97 
  98 };
  99 
 100 TEST_VM(BitMap, resize_grow) {
 101   BitMapTest::testResizeGrow<ResourceBitMap>();
 102   EXPECT_FALSE(HasFailure()) << "Failed on type ResourceBitMap";
 103   BitMapTest::testResizeGrow<CHeapBitMap>();
 104   EXPECT_FALSE(HasFailure()) << "Failed on type CHeapBitMap";
 105 }
 106 
 107 TEST_VM(BitMap, resize_shrink) {
 108   BitMapTest::testResizeShrink<ResourceBitMap>();
 109   EXPECT_FALSE(HasFailure()) << "Failed on type ResourceBitMap";
 110   BitMapTest::testResizeShrink<CHeapBitMap>();
 111   EXPECT_FALSE(HasFailure()) << "Failed on type CHeapBitMap";
 112 }
 113 
 114 TEST_VM(BitMap, resize_same) {
 115   BitMapTest::testResizeSame<ResourceBitMap>();
 116   EXPECT_FALSE(HasFailure()) << "Failed on type ResourceBitMap";
 117   BitMapTest::testResizeSame<CHeapBitMap>();
 118   EXPECT_FALSE(HasFailure()) << "Failed on type CHeapBitMap";
 119 }
 120 
 121 TEST_VM(BitMap, initialize) {
 122   BitMapTest::testInitialize<ResourceBitMap>();
 123   EXPECT_FALSE(HasFailure()) << "Failed on type ResourceBitMap";
 124   BitMapTest::testInitialize<CHeapBitMap>();
 125   EXPECT_FALSE(HasFailure()) << "Failed on type CHeapBitMap";
 126 }
 127 
 128 TEST_VM(BitMap, reinitialize) {
 129   BitMapTest::testReinitialize(0);
 130   BitMapTest::testReinitialize(BitMapTest::BITMAP_SIZE >> 3);
 131   BitMapTest::testReinitialize(BitMapTest::BITMAP_SIZE);
 132 }