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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <sstream>
#include "debug_print.h"
#include "class_linker.h"
#include "class_table.h"
#include "class_loader_utils.h"
#include "dex/utf.h"
#include "gc/heap.h"
#include "gc/space/space-inl.h"
#include "mirror/class.h"
#include "mirror/class_loader-inl.h"
#include "runtime.h"
#include "scoped_thread_state_change-inl.h"
#include "thread-current-inl.h"
#include "well_known_classes-inl.h"
namespace art {
std::string DescribeSpace(ObjPtr<mirror::Class> klass) {
std::ostringstream oss;
gc::Heap* heap = Runtime::Current()->GetHeap();
gc::space::ContinuousSpace* cs =
heap->FindContinuousSpaceFromObject(klass, /* fail_ok= */ true);
if (cs != nullptr) {
if (cs->IsImageSpace()) {
gc::space::ImageSpace* ispace = cs->AsImageSpace();
oss << "image;" << ispace->GetName() << ";"
// If the file name is the same as the name, output "+" instead to shorten the output.
<< (ispace->GetImageFilename() == cs->GetName() ? "+" : ispace->GetImageFilename())
<< ";" << static_cast<const void*>(ispace->Begin());
} else {
oss << "continuous;" << cs->GetName();
}
} else {
gc::space::DiscontinuousSpace* ds =
heap->FindDiscontinuousSpaceFromObject(klass, /* fail_ok= */ true);
if (ds != nullptr) {
oss << "discontinuous;" << ds->GetName();
} else {
oss << "invalid";
}
}
return oss.str();
}
std::string DescribeLoaders(ObjPtr<mirror::ClassLoader> loader, const char* class_descriptor) {
std::ostringstream oss;
uint32_t hash = ComputeModifiedUtf8Hash(class_descriptor);
ObjPtr<mirror::Class> path_class_loader = WellKnownClasses::dalvik_system_PathClassLoader.Get();
ObjPtr<mirror::Class> dex_class_loader = WellKnownClasses::dalvik_system_DexClassLoader.Get();
ObjPtr<mirror::Class> delegate_last_class_loader =
WellKnownClasses::dalvik_system_DelegateLastClassLoader.Get();
// Print the class loader chain.
bool found_class = false;
const char* loader_separator = "";
if (loader == nullptr) {
oss << "BootClassLoader"; // This would be unexpected.
}
for (; loader != nullptr; loader = loader->GetParent()) {
ClassTable* table = Runtime::Current()->GetClassLinker()->ClassTableForClassLoader(loader);
oss << loader_separator << loader->GetClass()->PrettyDescriptor()
<< "/" << static_cast<const void*>(table);
loader_separator = ";";
// If we didn't find the class yet, try to find it in the current class loader.
if (!found_class) {
ObjPtr<mirror::Class> klass =
(table != nullptr) ? table->Lookup(class_descriptor, hash) : nullptr;
if (klass != nullptr) {
found_class = true;
oss << "[hit:" << DescribeSpace(klass) << "]";
}
}
// For PathClassLoader, DexClassLoader or DelegateLastClassLoader
// also dump the dex file locations.
if (loader->GetClass() == path_class_loader ||
loader->GetClass() == dex_class_loader ||
loader->GetClass() == delegate_last_class_loader) {
oss << "(";
Thread* self = Thread::Current();
StackHandleScope<1> hs(self);
Handle<mirror::ClassLoader> handle(hs.NewHandle(loader));
const char* path_separator = "";
const DexFile* base_dex_file = nullptr;
VisitClassLoaderDexFiles(
self,
handle,
[&](const DexFile* dex_file) {
oss << path_separator;
path_separator = ":";
if (base_dex_file != nullptr &&
dex_file->GetLocation().length() > base_dex_file->GetLocation().length() &&
dex_file->GetLocation().compare(0u,
base_dex_file->GetLocation().length(),
base_dex_file->GetLocation()) == 0) {
// Replace the base location with "+" to shorten the output.
oss << "+" << dex_file->GetLocation().substr(base_dex_file->GetLocation().length());
} else {
oss << dex_file->GetLocation();
base_dex_file = dex_file;
}
oss << "/" << static_cast<const void*>(dex_file);
return true; // Continue with the next DexFile.
});
oss << ")";
}
}
return oss.str();
}
} // namespace art
|
