sanitizer_symbolizer_win.cc [plain text]
#include "sanitizer_platform.h"
#if SANITIZER_WINDOWS
#include <windows.h>
#include <dbghelp.h>
#pragma comment(lib, "dbghelp.lib")
#include "sanitizer_symbolizer.h"
namespace __sanitizer {
class WinSymbolizer : public Symbolizer {
public:
WinSymbolizer() : initialized_(false) {}
uptr SymbolizePC(uptr addr, AddressInfo *frames, uptr max_frames) {
if (max_frames == 0)
return 0;
BlockingMutexLock l(&dbghelp_mu_);
if (!initialized_) {
SymSetOptions(SYMOPT_DEFERRED_LOADS |
SYMOPT_UNDNAME |
SYMOPT_LOAD_LINES);
CHECK(SymInitialize(GetCurrentProcess(), 0, TRUE));
initialized_ = true;
}
char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(CHAR)];
PSYMBOL_INFO symbol = (PSYMBOL_INFO)buffer;
symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
symbol->MaxNameLen = MAX_SYM_NAME;
DWORD64 offset = 0;
BOOL got_objname = SymFromAddr(GetCurrentProcess(),
(DWORD64)addr, &offset, symbol);
if (!got_objname)
return 0;
DWORD unused;
IMAGEHLP_LINE64 line_info;
line_info.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
BOOL got_fileline = SymGetLineFromAddr64(GetCurrentProcess(), (DWORD64)addr,
&unused, &line_info);
AddressInfo *info = &frames[0];
info->Clear();
info->function = internal_strdup(symbol->Name);
info->function_offset = (uptr)offset;
if (got_fileline) {
info->file = internal_strdup(line_info.FileName);
info->line = line_info.LineNumber;
}
IMAGEHLP_MODULE64 mod_info;
internal_memset(&mod_info, 0, sizeof(mod_info));
mod_info.SizeOfStruct = sizeof(mod_info);
if (SymGetModuleInfo64(GetCurrentProcess(), addr, &mod_info))
info->FillAddressAndModuleInfo(addr, mod_info.ImageName,
addr - (uptr)mod_info.BaseOfImage);
return 1;
}
bool CanReturnFileLineInfo() {
return true;
}
private:
BlockingMutex dbghelp_mu_;
bool initialized_;
};
Symbolizer *Symbolizer::PlatformInit(const char *path_to_external) {
static bool called_once = false;
CHECK(!called_once && "Shouldn't create more than one symbolizer");
called_once = true;
return new(symbolizer_allocator_) WinSymbolizer();
}
}
#endif // _WIN32