1 //===-- sanitizer_symbolizer_win.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 // Windows-specific implementation of symbolizer parts.
11 //===----------------------------------------------------------------------===//
13 #include "sanitizer_platform.h"
17 #pragma comment(lib, "dbghelp.lib")
19 #include "sanitizer_symbolizer.h"
21 namespace __sanitizer
{
23 class WinSymbolizer
: public Symbolizer
{
25 WinSymbolizer() : initialized_(false) {}
27 uptr
SymbolizePC(uptr addr
, AddressInfo
*frames
, uptr max_frames
) {
31 BlockingMutexLock
l(&dbghelp_mu_
);
33 SymSetOptions(SYMOPT_DEFERRED_LOADS
|
36 CHECK(SymInitialize(GetCurrentProcess(), 0, TRUE
));
37 // FIXME: We don't call SymCleanup() on exit yet - should we?
41 // See http://msdn.microsoft.com/en-us/library/ms680578(VS.85).aspx
42 char buffer
[sizeof(SYMBOL_INFO
) + MAX_SYM_NAME
* sizeof(CHAR
)];
43 PSYMBOL_INFO symbol
= (PSYMBOL_INFO
)buffer
;
44 symbol
->SizeOfStruct
= sizeof(SYMBOL_INFO
);
45 symbol
->MaxNameLen
= MAX_SYM_NAME
;
47 BOOL got_objname
= SymFromAddr(GetCurrentProcess(),
48 (DWORD64
)addr
, &offset
, symbol
);
53 IMAGEHLP_LINE64 line_info
;
54 line_info
.SizeOfStruct
= sizeof(IMAGEHLP_LINE64
);
55 BOOL got_fileline
= SymGetLineFromAddr64(GetCurrentProcess(), (DWORD64
)addr
,
57 AddressInfo
*info
= &frames
[0];
59 info
->function
= internal_strdup(symbol
->Name
);
60 info
->function_offset
= (uptr
)offset
;
62 info
->file
= internal_strdup(line_info
.FileName
);
63 info
->line
= line_info
.LineNumber
;
66 IMAGEHLP_MODULE64 mod_info
;
67 internal_memset(&mod_info
, 0, sizeof(mod_info
));
68 mod_info
.SizeOfStruct
= sizeof(mod_info
);
69 if (SymGetModuleInfo64(GetCurrentProcess(), addr
, &mod_info
))
70 info
->FillAddressAndModuleInfo(addr
, mod_info
.ImageName
,
71 addr
- (uptr
)mod_info
.BaseOfImage
);
75 bool CanReturnFileLineInfo() {
79 const char *Demangle(const char *name
) {
81 static char demangle_buffer
[1000];
82 if (name
[0] == '\01' &&
83 UnDecorateSymbolName(name
+ 1, demangle_buffer
, sizeof(demangle_buffer
),
85 return demangle_buffer
;
90 // FIXME: Implement GetModuleNameAndOffsetForPC().
93 // All DbgHelp functions are single threaded, so we should use a mutex to
94 // serialize accesses.
95 BlockingMutex dbghelp_mu_
;
99 Symbolizer
*Symbolizer::PlatformInit(const char *path_to_external
) {
100 static bool called_once
= false;
101 CHECK(!called_once
&& "Shouldn't create more than one symbolizer");
103 return new(symbolizer_allocator_
) WinSymbolizer();
106 } // namespace __sanitizer