| //===-- tsan_symbolize.cc -------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of ThreadSanitizer (TSan), a race detector. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "tsan_symbolize.h" |
| |
| #include "sanitizer_common/sanitizer_common.h" |
| #include "sanitizer_common/sanitizer_placement_new.h" |
| #include "sanitizer_common/sanitizer_symbolizer.h" |
| #include "tsan_flags.h" |
| #include "tsan_report.h" |
| |
| namespace __tsan { |
| |
| ReportStack *NewReportStackEntry(uptr addr) { |
| ReportStack *ent = (ReportStack*)internal_alloc(MBlockReportStack, |
| sizeof(ReportStack)); |
| internal_memset(ent, 0, sizeof(*ent)); |
| ent->pc = addr; |
| return ent; |
| } |
| |
| static ReportStack *NewReportStackEntry(const AddressInfo &info) { |
| ReportStack *ent = NewReportStackEntry(info.address); |
| if (info.module) |
| ent->module = internal_strdup(info.module); |
| ent->offset = info.module_offset; |
| if (info.function) { |
| ent->func = internal_strdup(info.function); |
| } |
| if (info.file) |
| ent->file = internal_strdup(info.file); |
| ent->line = info.line; |
| ent->col = info.column; |
| return ent; |
| } |
| |
| ReportStack *SymbolizeCode(uptr addr) { |
| if (flags()->use_internal_symbolizer) { |
| static const uptr kMaxAddrFrames = 16; |
| InternalScopedBuffer<AddressInfo> addr_frames(kMaxAddrFrames); |
| for (uptr i = 0; i < kMaxAddrFrames; i++) |
| new(&addr_frames[i]) AddressInfo(); |
| uptr addr_frames_num = __sanitizer::SymbolizeCode(addr, addr_frames, |
| kMaxAddrFrames); |
| if (addr_frames_num == 0) |
| return NewReportStackEntry(addr); |
| ReportStack *top = 0; |
| ReportStack *bottom = 0; |
| for (uptr i = 0; i < addr_frames_num; i++) { |
| ReportStack *cur_entry = NewReportStackEntry(addr_frames[i]); |
| CHECK(cur_entry); |
| addr_frames[i].Clear(); |
| if (i == 0) |
| top = cur_entry; |
| else |
| bottom->next = cur_entry; |
| bottom = cur_entry; |
| } |
| return top; |
| } |
| return SymbolizeCodeAddr2Line(addr); |
| } |
| |
| ReportStack *SymbolizeData(uptr addr) { |
| return SymbolizeDataAddr2Line(addr); |
| } |
| |
| } // namespace __tsan |