1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/*
* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2020 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "memory/allocation.inline.hpp"
#include "memory/classLoaderMetaspace.hpp"
#include "memory/metaspace.hpp"
#include "memory/metaspace/virtualSpaceList.hpp"
#include "runtime/mutex.hpp"
#include "runtime/mutexLocker.hpp"
#include "runtime/os.hpp"
#include "unittest.hpp"
using namespace metaspace;
// Test the cheerful multitude of metaspace-contains-functions.
class MetaspaceIsMetaspaceObjTest {
Mutex* _lock;
ClassLoaderMetaspace* _ms;
public:
MetaspaceIsMetaspaceObjTest() : _lock(NULL), _ms(NULL) {}
~MetaspaceIsMetaspaceObjTest() {
delete _ms;
delete _lock;
}
void do_test(Metaspace::MetadataType mdType) {
_lock = new Mutex(Monitor::native, "gtest-IsMetaspaceObjTest-lock", false, Monitor::_safepoint_check_never);
{
MutexLocker ml(_lock, Mutex::_no_safepoint_check_flag);
_ms = new ClassLoaderMetaspace(_lock, Metaspace::StandardMetaspaceType);
}
const MetaspaceObj* p = (MetaspaceObj*) _ms->allocate(42, mdType);
// Test MetaspaceObj::is_metaspace_object
ASSERT_TRUE(MetaspaceObj::is_valid(p));
// A misaligned object shall not be recognized
const MetaspaceObj* p_misaligned = (MetaspaceObj*)((address)p + 1);
ASSERT_FALSE(MetaspaceObj::is_valid(p_misaligned));
// Test VirtualSpaceList::contains
const VirtualSpaceList* const vslist =
(mdType == Metaspace::ClassType && Metaspace::using_class_space()) ?
VirtualSpaceList::vslist_class() : VirtualSpaceList::vslist_nonclass();
ASSERT_TRUE(vslist->contains((MetaWord*)p));
// A misaligned pointer shall still be recognized by list::contains
ASSERT_TRUE(vslist->contains((MetaWord*)((address)p + 1)));
// Now for some bogus values
ASSERT_FALSE(MetaspaceObj::is_valid((MetaspaceObj*)NULL));
// Should exercise various paths in MetaspaceObj::is_valid()
ASSERT_FALSE(MetaspaceObj::is_valid((MetaspaceObj*)1024));
ASSERT_FALSE(MetaspaceObj::is_valid((MetaspaceObj*)8192));
MetaspaceObj* p_stack = (MetaspaceObj*) &_lock;
ASSERT_FALSE(MetaspaceObj::is_valid(p_stack));
MetaspaceObj* p_heap = (MetaspaceObj*) os::malloc(41, mtInternal);
ASSERT_FALSE(MetaspaceObj::is_valid(p_heap));
os::free(p_heap);
// Test Metaspace::contains_xxx
ASSERT_TRUE(Metaspace::contains(p));
ASSERT_TRUE(Metaspace::contains_non_shared(p));
delete _ms;
_ms = NULL;
delete _lock;
_lock = NULL;
}
};
TEST_VM(metaspace, is_metaspace_obj_non_class) {
MetaspaceIsMetaspaceObjTest test;
test.do_test(Metaspace::NonClassType);
}
TEST_VM(metaspace, is_metaspace_obj_class) {
MetaspaceIsMetaspaceObjTest test;
test.do_test(Metaspace::ClassType);
}
|
