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Merged
apaznikov merged 1 commit into from
Aug 19, 2025
Merged

Add trace v2 #52

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2 changes: 2 additions & 0 deletions compiler-rt/lib/tsan/rtl/tsan_rtl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -800,6 +800,8 @@ int Finalize(ThreadState *thr) {

failed = OnFinalize(failed);

LogFlushData();

return failed ? common_flags()->exitcode : 0;
}

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2 changes: 2 additions & 0 deletions compiler-rt/lib/tsan/rtl/tsan_rtl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,8 @@

namespace __tsan {

void LogFlushData();

#if !SANITIZER_GO
struct MapUnmapCallback;
# if defined(__mips64) || defined(__aarch64__) || defined(__loongarch__) || \
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42 changes: 42 additions & 0 deletions compiler-rt/lib/tsan/rtl/tsan_rtl_access.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,45 @@

namespace __tsan {

// How many log accesses to flush at one time
#define STATS_BUFFER_COUNT 10000000

struct AccessData {
uptr Address;
uptr Size;
Tid ThreadId;
u8 Type;
};

static Mutex LogMutex;
static u32 LogDataOffset = 0;
static AccessData LogData[STATS_BUFFER_COUNT];
static char LogString[STATS_BUFFER_COUNT * 64];

void LogFlushData() {
u32 Offset = 0;
for (u32 I = 0; I < LogDataOffset; ++I)
Offset += internal_snprintf(LogString + Offset,
sizeof(LogString) - Offset,
" > 0x%8lx %lu 0x%02x %u\n",
LogData[I].Address,
LogData[I].Size,
LogData[I].Type,
LogData[I].ThreadId);
Printf("%s", LogString);
}

void LogMemoryAccess(uptr Address, uptr Size,
AccessType Type, Tid ThreadId) {
LogMutex.Lock();
LogData[LogDataOffset++] = {Address, Size, ThreadId, static_cast<u8>(Type)};
if (LogDataOffset == STATS_BUFFER_COUNT) {
LogFlushData();
LogDataOffset = 0;
}
LogMutex.Unlock();
}

ALWAYS_INLINE USED bool TryTraceMemoryAccess(ThreadState* thr, uptr pc,
uptr addr, uptr size,
AccessType typ) {
Expand Down Expand Up @@ -419,6 +458,7 @@ NOINLINE void TraceRestartMemoryAccess(ThreadState* thr, uptr pc, uptr addr,

ALWAYS_INLINE USED void MemoryAccess(ThreadState* thr, uptr pc, uptr addr,
uptr size, AccessType typ) {
LogMemoryAccess(addr, size, typ, thr->tid);
RawShadow* shadow_mem = MemToShadow(addr);
UNUSED char memBuf[4][64];
DPrintf2("#%d: Access: %d@%d %p/%zd typ=0x%x {%s, %s, %s, %s}\n", thr->tid,
Expand Down Expand Up @@ -454,6 +494,7 @@ void RestartMemoryAccess16(ThreadState* thr, uptr pc, uptr addr,
ALWAYS_INLINE USED void MemoryAccess16(ThreadState* thr, uptr pc, uptr addr,
AccessType typ) {
const uptr size = 16;
LogMemoryAccess(addr, size, typ, thr->tid);
FastState fast_state = thr->fast_state;
if (UNLIKELY(fast_state.GetIgnoreBit()))
return;
Expand Down Expand Up @@ -666,6 +707,7 @@ template <bool is_read>
void MemoryAccessRangeT(ThreadState* thr, uptr pc, uptr addr, uptr size) {
const AccessType typ =
(is_read ? kAccessRead : kAccessWrite) | kAccessNoRodata;
LogMemoryAccess(addr, size, typ, thr->tid);
RawShadow* shadow_mem = MemToShadow(addr);
DPrintf2("#%d: MemoryAccessRange: @%p %p size=%d is_read=%d\n", thr->tid,
(void*)pc, (void*)addr, (int)size, is_read);
Expand Down