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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
//===-- sanitizer_symbolizer.cpp ------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is shared between AddressSanitizer and ThreadSanitizer
// run-time libraries.
//===----------------------------------------------------------------------===//
#include <errno.h>
#include "sanitizer_allocator_internal.h"
#include "sanitizer_common.h"
#include "sanitizer_internal_defs.h"
#include "sanitizer_libc.h"
#include "sanitizer_placement_new.h"
#include "sanitizer_platform.h"
#include "sanitizer_symbolizer_internal.h"
namespace __sanitizer {
AddressInfo::AddressInfo() {
internal_memset(this, 0, sizeof(AddressInfo));
function_offset = kUnknown;
}
void AddressInfo::Clear() {
InternalFree(module);
InternalFree(function);
InternalFree(file);
internal_memset(this, 0, sizeof(AddressInfo));
function_offset = kUnknown;
uuid_size = 0;
}
void AddressInfo::FillModuleInfo(const char *mod_name, uptr mod_offset,
ModuleArch mod_arch) {
module = internal_strdup(mod_name);
module_offset = mod_offset;
module_arch = mod_arch;
uuid_size = 0;
}
void AddressInfo::FillModuleInfo(const LoadedModule &mod) {
module = internal_strdup(mod.full_name());
module_offset = address - mod.base_address();
module_arch = mod.arch();
if (mod.uuid_size())
internal_memcpy(uuid, mod.uuid(), mod.uuid_size());
uuid_size = mod.uuid_size();
}
SymbolizedStack::SymbolizedStack() : next(nullptr), info() {}
SymbolizedStack *SymbolizedStack::New(uptr addr) {
void *mem = InternalAlloc(sizeof(SymbolizedStack));
SymbolizedStack *res = new(mem) SymbolizedStack();
res->info.address = addr;
return res;
}
void SymbolizedStack::ClearAll() {
info.Clear();
if (next)
next->ClearAll();
InternalFree(this);
}
DataInfo::DataInfo() {
internal_memset(this, 0, sizeof(DataInfo));
}
void DataInfo::Clear() {
InternalFree(module);
InternalFree(file);
InternalFree(name);
internal_memset(this, 0, sizeof(DataInfo));
}
void FrameInfo::Clear() {
InternalFree(module);
for (LocalInfo &local : locals) {
InternalFree(local.function_name);
InternalFree(local.name);
InternalFree(local.decl_file);
}
locals.clear();
}
Symbolizer *Symbolizer::symbolizer_;
StaticSpinMutex Symbolizer::init_mu_;
LowLevelAllocator Symbolizer::symbolizer_allocator_;
void Symbolizer::InvalidateModuleList() {
modules_fresh_ = false;
}
void Symbolizer::AddHooks(Symbolizer::StartSymbolizationHook start_hook,
Symbolizer::EndSymbolizationHook end_hook) {
CHECK(start_hook_ == 0 && end_hook_ == 0);
start_hook_ = start_hook;
end_hook_ = end_hook;
}
const char *Symbolizer::ModuleNameOwner::GetOwnedCopy(const char *str) {
mu_->CheckLocked();
// 'str' will be the same string multiple times in a row, optimize this case.
if (last_match_ && !internal_strcmp(last_match_, str))
return last_match_;
// FIXME: this is linear search.
// We should optimize this further if this turns out to be a bottleneck later.
for (uptr i = 0; i < storage_.size(); ++i) {
if (!internal_strcmp(storage_[i], str)) {
last_match_ = storage_[i];
return last_match_;
}
}
last_match_ = internal_strdup(str);
storage_.push_back(last_match_);
return last_match_;
}
Symbolizer::Symbolizer(IntrusiveList<SymbolizerTool> tools)
: module_names_(&mu_), modules_(), modules_fresh_(false), tools_(tools),
start_hook_(0), end_hook_(0) {}
Symbolizer::SymbolizerScope::SymbolizerScope(const Symbolizer *sym)
: sym_(sym), errno_(errno) {
if (sym_->start_hook_)
sym_->start_hook_();
}
Symbolizer::SymbolizerScope::~SymbolizerScope() {
if (sym_->end_hook_)
sym_->end_hook_();
errno = errno_;
}
} // namespace __sanitizer
|
