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//===-- 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;
InternalScopedBuf<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
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