1 //===-- sanitizer_symbolizer.cc -------------------------------------------===//
3 // This file is distributed under the University of Illinois Open Source
4 // License. See LICENSE.TXT for details.
6 //===----------------------------------------------------------------------===//
8 // This file is shared between AddressSanitizer and ThreadSanitizer
10 //===----------------------------------------------------------------------===//
12 #include "sanitizer_allocator_internal.h"
13 #include "sanitizer_platform.h"
14 #include "sanitizer_internal_defs.h"
15 #include "sanitizer_libc.h"
16 #include "sanitizer_placement_new.h"
17 #include "sanitizer_symbolizer_internal.h"
19 namespace __sanitizer
{
21 AddressInfo::AddressInfo() {
22 internal_memset(this, 0, sizeof(AddressInfo
));
23 function_offset
= kUnknown
;
26 void AddressInfo::Clear() {
28 InternalFree(function
);
30 internal_memset(this, 0, sizeof(AddressInfo
));
31 function_offset
= kUnknown
;
34 void AddressInfo::FillModuleInfo(const char *mod_name
, uptr mod_offset
) {
35 module
= internal_strdup(mod_name
);
36 module_offset
= mod_offset
;
39 SymbolizedStack::SymbolizedStack() : next(nullptr), info() {}
41 SymbolizedStack
*SymbolizedStack::New(uptr addr
) {
42 void *mem
= InternalAlloc(sizeof(SymbolizedStack
));
43 SymbolizedStack
*res
= new(mem
) SymbolizedStack();
44 res
->info
.address
= addr
;
48 void SymbolizedStack::ClearAll() {
55 DataInfo::DataInfo() {
56 internal_memset(this, 0, sizeof(DataInfo
));
59 void DataInfo::Clear() {
62 internal_memset(this, 0, sizeof(DataInfo
));
65 Symbolizer
*Symbolizer::symbolizer_
;
66 StaticSpinMutex
Symbolizer::init_mu_
;
67 LowLevelAllocator
Symbolizer::symbolizer_allocator_
;
69 void Symbolizer::AddHooks(Symbolizer::StartSymbolizationHook start_hook
,
70 Symbolizer::EndSymbolizationHook end_hook
) {
71 CHECK(start_hook_
== 0 && end_hook_
== 0);
72 start_hook_
= start_hook
;
76 const char *Symbolizer::ModuleNameOwner::GetOwnedCopy(const char *str
) {
79 // 'str' will be the same string multiple times in a row, optimize this case.
80 if (last_match_
&& !internal_strcmp(last_match_
, str
))
83 // FIXME: this is linear search.
84 // We should optimize this further if this turns out to be a bottleneck later.
85 for (uptr i
= 0; i
< storage_
.size(); ++i
) {
86 if (!internal_strcmp(storage_
[i
], str
)) {
87 last_match_
= storage_
[i
];
91 last_match_
= internal_strdup(str
);
92 storage_
.push_back(last_match_
);
96 Symbolizer::Symbolizer(IntrusiveList
<SymbolizerTool
> tools
)
97 : module_names_(&mu_
), n_modules_(0), modules_fresh_(false), tools_(tools
),
98 start_hook_(0), end_hook_(0) {}
100 Symbolizer::SymbolizerScope::SymbolizerScope(const Symbolizer
*sym
)
102 if (sym_
->start_hook_
)
106 Symbolizer::SymbolizerScope::~SymbolizerScope() {
111 } // namespace __sanitizer