110 lines
3.4 KiB
C++
110 lines
3.4 KiB
C++
//===-- tsan_symbolize.cc -------------------------------------------------===//
|
|
//
|
|
// 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"
|
|
#include "tsan_rtl.h"
|
|
|
|
namespace __tsan {
|
|
|
|
void EnterSymbolizer() {
|
|
ThreadState *thr = cur_thread();
|
|
CHECK(!thr->in_symbolizer);
|
|
thr->in_symbolizer = true;
|
|
thr->ignore_interceptors++;
|
|
}
|
|
|
|
void ExitSymbolizer() {
|
|
ThreadState *thr = cur_thread();
|
|
CHECK(thr->in_symbolizer);
|
|
thr->in_symbolizer = false;
|
|
thr->ignore_interceptors--;
|
|
}
|
|
|
|
// Denotes fake PC values that come from JIT/JAVA/etc.
|
|
// For such PC values __tsan_symbolize_external() will be called.
|
|
const uptr kExternalPCBit = 1ULL << 60;
|
|
|
|
// May be overriden by JIT/JAVA/etc,
|
|
// whatever produces PCs marked with kExternalPCBit.
|
|
extern "C" bool __tsan_symbolize_external(uptr pc,
|
|
char *func_buf, uptr func_siz,
|
|
char *file_buf, uptr file_siz,
|
|
int *line, int *col)
|
|
SANITIZER_WEAK_ATTRIBUTE;
|
|
|
|
bool __tsan_symbolize_external(uptr pc,
|
|
char *func_buf, uptr func_siz,
|
|
char *file_buf, uptr file_siz,
|
|
int *line, int *col) {
|
|
return false;
|
|
}
|
|
|
|
ReportStack *SymbolizeCode(uptr addr) {
|
|
// Check if PC comes from non-native land.
|
|
if (addr & kExternalPCBit) {
|
|
// Declare static to not consume too much stack space.
|
|
// We symbolize reports in a single thread, so this is fine.
|
|
static char func_buf[1024];
|
|
static char file_buf[1024];
|
|
int line, col;
|
|
ReportStack *ent = ReportStack::New(addr);
|
|
if (!__tsan_symbolize_external(addr, func_buf, sizeof(func_buf),
|
|
file_buf, sizeof(file_buf), &line, &col))
|
|
return ent;
|
|
ent->info.function = internal_strdup(func_buf);
|
|
ent->info.file = internal_strdup(file_buf);
|
|
ent->info.line = line;
|
|
ent->info.column = col;
|
|
return ent;
|
|
}
|
|
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 = Symbolizer::GetOrInit()->SymbolizePC(
|
|
addr, addr_frames.data(), kMaxAddrFrames);
|
|
if (addr_frames_num == 0)
|
|
return ReportStack::New(addr);
|
|
ReportStack *top = 0;
|
|
ReportStack *bottom = 0;
|
|
for (uptr i = 0; i < addr_frames_num; i++) {
|
|
ReportStack *cur_entry = ReportStack::New(addr);
|
|
cur_entry->info = addr_frames[i];
|
|
if (i == 0)
|
|
top = cur_entry;
|
|
else
|
|
bottom->next = cur_entry;
|
|
bottom = cur_entry;
|
|
}
|
|
return top;
|
|
}
|
|
|
|
ReportLocation *SymbolizeData(uptr addr) {
|
|
DataInfo info;
|
|
if (!Symbolizer::GetOrInit()->SymbolizeData(addr, &info))
|
|
return 0;
|
|
ReportLocation *ent = ReportLocation::New(ReportLocationGlobal);
|
|
ent->global = info;
|
|
return ent;
|
|
}
|
|
|
|
void SymbolizeFlush() {
|
|
Symbolizer::GetOrInit()->Flush();
|
|
}
|
|
|
|
} // namespace __tsan
|