1 /*
 2  * Copyright (c) 2020, 2024, Oracle and/or its affiliates. All rights reserved.
 3  * Copyright (c) 2020 SAP SE. All rights reserved.
 4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 5  *
 6  * This code is free software; you can redistribute it and/or modify it
 7  * under the terms of the GNU General Public License version 2 only, as
 8  * published by the Free Software Foundation.
 9  *
10  * This code is distributed in the hope that it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13  * version 2 for more details (a copy is included in the LICENSE file that
14  * accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License version
17  * 2 along with this work; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19  *
20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21  * or visit www.oracle.com if you need additional information or have any
22  * questions.
23  *
24  */
25 
26 #include "precompiled.hpp"
27 #include "memory/metaspace/counters.hpp"
28 #include "memory/metaspace/freeBlocks.hpp"
29 #include "memory/metaspace/metablock.hpp"
30 
31 //#define LOG_PLEASE
32 #include "metaspaceGtestCommon.hpp"
33 
34 using metaspace::FreeBlocks;
35 using metaspace::MetaBlock;
36 using metaspace::SizeCounter;
37 
38 #define CHECK_CONTENT(fb, num_blocks_expected, word_size_expected) \
39 { \
40   if (word_size_expected > 0) { \
41     EXPECT_FALSE(fb.is_empty()); \
42   } else { \
43     EXPECT_TRUE(fb.is_empty()); \
44   } \
45   EXPECT_EQ(fb.total_size(), (size_t)word_size_expected); \
46   EXPECT_EQ(fb.count(), (int)num_blocks_expected); \
47 }
48 
49 TEST_VM(metaspace, freeblocks_basics) {
50 
51   FreeBlocks fbl;
52   MetaWord tmp[1024];
53   CHECK_CONTENT(fbl, 0, 0);
54 
55   MetaBlock bl(tmp, 1024);
56   fbl.add_block(bl);
57   DEBUG_ONLY(fbl.verify();)
58   ASSERT_FALSE(fbl.is_empty());
59   CHECK_CONTENT(fbl, 1, 1024);
60 
61   MetaBlock bl2 = fbl.remove_block(1024);
62   ASSERT_EQ(bl, bl2);
63   DEBUG_ONLY(fbl.verify();)
64   CHECK_CONTENT(fbl, 0, 0);
65 
66 }