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 | |
31 | using namespace metaspace; |
32 | |
33 | TEST_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 | |
42 | TEST_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 | |
54 | TEST_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 | |
66 | TEST_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 | |
78 | TEST_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 | |