1/*
2 * Copyright (c) 2018, 2019, 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/metaspace.hpp"
26#include "memory/metaspace/virtualSpaceList.hpp"
27#include "runtime/mutexLocker.hpp"
28#include "runtime/os.hpp"
29#include "unittest.hpp"
30
31using namespace metaspace;
32
33TEST_VM(MetaspaceUtils, reserved) {
34 size_t reserved = MetaspaceUtils::reserved_bytes();
35 EXPECT_GT(reserved, 0UL);
36
37 size_t reserved_metadata = MetaspaceUtils::reserved_bytes(Metaspace::NonClassType);
38 EXPECT_GT(reserved_metadata, 0UL);
39 EXPECT_LE(reserved_metadata, reserved);
40}
41
42TEST_VM(MetaspaceUtils, reserved_compressed_class_pointers) {
43 if (!UseCompressedClassPointers) {
44 return;
45 }
46 size_t reserved = MetaspaceUtils::reserved_bytes();
47 EXPECT_GT(reserved, 0UL);
48
49 size_t reserved_class = MetaspaceUtils::reserved_bytes(Metaspace::ClassType);
50 EXPECT_GT(reserved_class, 0UL);
51 EXPECT_LE(reserved_class, reserved);
52}
53
54TEST_VM(MetaspaceUtils, committed) {
55 size_t committed = MetaspaceUtils::committed_bytes();
56 EXPECT_GT(committed, 0UL);
57
58 size_t reserved = MetaspaceUtils::reserved_bytes();
59 EXPECT_LE(committed, reserved);
60
61 size_t committed_metadata = MetaspaceUtils::committed_bytes(Metaspace::NonClassType);
62 EXPECT_GT(committed_metadata, 0UL);
63 EXPECT_LE(committed_metadata, committed);
64}
65
66TEST_VM(MetaspaceUtils, committed_compressed_class_pointers) {
67 if (!UseCompressedClassPointers) {
68 return;
69 }
70 size_t committed = MetaspaceUtils::committed_bytes();
71 EXPECT_GT(committed, 0UL);
72
73 size_t committed_class = MetaspaceUtils::committed_bytes(Metaspace::ClassType);
74 EXPECT_GT(committed_class, 0UL);
75 EXPECT_LE(committed_class, committed);
76}
77
78TEST_VM(MetaspaceUtils, virtual_space_list_large_chunk) {
79 VirtualSpaceList* vs_list = new VirtualSpaceList(os::vm_allocation_granularity());
80 MutexLocker cl(MetaspaceExpand_lock, Mutex::_no_safepoint_check_flag);
81 // A size larger than VirtualSpaceSize (256k) and add one page to make it _not_ be
82 // vm_allocation_granularity aligned on Windows.
83 size_t large_size = (size_t)(2*256*K + (os::vm_page_size() / BytesPerWord));
84 large_size += (os::vm_page_size() / BytesPerWord);
85 vs_list->get_new_chunk(large_size, 0);
86}
87