1 | /* |
2 | * Copyright (c) 2016, 2018, 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/allocation.hpp" |
26 | #include "memory/metaspace/metachunk.hpp" |
27 | #include "unittest.hpp" |
28 | #include "utilities/align.hpp" |
29 | #include "utilities/copy.hpp" |
30 | #include "utilities/debug.hpp" |
31 | |
32 | using namespace metaspace; |
33 | |
34 | class MetachunkTest { |
35 | public: |
36 | static MetaWord* initial_top(Metachunk* metachunk) { |
37 | return metachunk->initial_top(); |
38 | } |
39 | static MetaWord* top(Metachunk* metachunk) { |
40 | return metachunk->top(); |
41 | } |
42 | |
43 | }; |
44 | |
45 | TEST(Metachunk, basic) { |
46 | const ChunkIndex chunk_type = MediumIndex; |
47 | const bool is_class = false; |
48 | const size_t word_size = get_size_for_nonhumongous_chunktype(chunk_type, is_class); |
49 | // Allocate the chunk with correct alignment. |
50 | void* memory = malloc(word_size * BytesPerWord * 2); |
51 | ASSERT_TRUE(NULL != memory) << "Failed to malloc 2MB" ; |
52 | |
53 | void* p_placement = align_up(memory, word_size * BytesPerWord); |
54 | |
55 | Metachunk* metachunk = ::new (p_placement) Metachunk(chunk_type, is_class, word_size, NULL); |
56 | |
57 | EXPECT_EQ((MetaWord*) metachunk, metachunk->bottom()); |
58 | EXPECT_EQ((uintptr_t*) metachunk + metachunk->size(), metachunk->end()); |
59 | |
60 | // Check sizes |
61 | EXPECT_EQ(metachunk->size(), metachunk->word_size()); |
62 | EXPECT_EQ(pointer_delta(metachunk->end(), metachunk->bottom(), |
63 | sizeof (MetaWord)), |
64 | metachunk->word_size()); |
65 | |
66 | // Check usage |
67 | EXPECT_EQ(metachunk->used_word_size(), metachunk->overhead()); |
68 | EXPECT_EQ(metachunk->word_size() - metachunk->used_word_size(), |
69 | metachunk->free_word_size()); |
70 | EXPECT_EQ(MetachunkTest::top(metachunk), MetachunkTest::initial_top(metachunk)); |
71 | EXPECT_TRUE(metachunk->is_empty()); |
72 | |
73 | // Allocate |
74 | size_t alloc_size = 64; // Words |
75 | EXPECT_TRUE(is_aligned(alloc_size, Metachunk::object_alignment())); |
76 | |
77 | MetaWord* mem = metachunk->allocate(alloc_size); |
78 | |
79 | // Check post alloc |
80 | EXPECT_EQ(MetachunkTest::initial_top(metachunk), mem); |
81 | EXPECT_EQ(MetachunkTest::top(metachunk), mem + alloc_size); |
82 | EXPECT_EQ(metachunk->overhead() + alloc_size, metachunk->used_word_size()); |
83 | EXPECT_EQ(metachunk->word_size() - metachunk->used_word_size(), |
84 | metachunk->free_word_size()); |
85 | EXPECT_FALSE(metachunk->is_empty()); |
86 | |
87 | // Clear chunk |
88 | metachunk->reset_empty(); |
89 | |
90 | // Check post clear |
91 | EXPECT_EQ(metachunk->used_word_size(), metachunk->overhead()); |
92 | EXPECT_EQ(metachunk->word_size() - metachunk->used_word_size(), |
93 | metachunk->free_word_size()); |
94 | EXPECT_EQ(MetachunkTest::top(metachunk), MetachunkTest::initial_top(metachunk)); |
95 | EXPECT_TRUE(metachunk->is_empty()); |
96 | |
97 | free(memory); |
98 | } |
99 | |