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gcc/libsanitizer/tsan/tsan_rtl_report.cc
Kostya Serebryany df77f0e4ec libsanitizer merge from upstream r196090 
From-SVN: r205695
2013-12-05 09:18:38 +00:00

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//===-- tsan_rtl_report.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 "sanitizer_common/sanitizer_libc.h"
#include "sanitizer_common/sanitizer_placement_new.h"
#include "sanitizer_common/sanitizer_stackdepot.h"
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_stacktrace.h"
#include "tsan_platform.h"
#include "tsan_rtl.h"
#include "tsan_suppressions.h"
#include "tsan_symbolize.h"
#include "tsan_report.h"
#include "tsan_sync.h"
#include "tsan_mman.h"
#include "tsan_flags.h"
#include "tsan_fd.h"
namespace __tsan {
using namespace __sanitizer; // NOLINT
static ReportStack *SymbolizeStack(const StackTrace& trace);
void TsanCheckFailed(const char *file, int line, const char *cond,
u64 v1, u64 v2) {
ScopedInRtl in_rtl;
Printf("FATAL: ThreadSanitizer CHECK failed: "
"%s:%d \"%s\" (0x%zx, 0x%zx)\n",
file, line, cond, (uptr)v1, (uptr)v2);
PrintCurrentStackSlow();
Die();
}
// Can be overriden by an application/test to intercept reports.
#ifdef TSAN_EXTERNAL_HOOKS
bool OnReport(const ReportDesc *rep, bool suppressed);
#else
SANITIZER_INTERFACE_ATTRIBUTE
bool WEAK OnReport(const ReportDesc *rep, bool suppressed) {
(void)rep;
return suppressed;
}
#endif
static void StackStripMain(ReportStack *stack) {
ReportStack *last_frame = 0;
ReportStack *last_frame2 = 0;
const char *prefix = "__interceptor_";
uptr prefix_len = internal_strlen(prefix);
const char *path_prefix = flags()->strip_path_prefix;
uptr path_prefix_len = internal_strlen(path_prefix);
char *pos;
for (ReportStack *ent = stack; ent; ent = ent->next) {
if (ent->func && 0 == internal_strncmp(ent->func, prefix, prefix_len))
ent->func += prefix_len;
if (ent->file && (pos = internal_strstr(ent->file, path_prefix)))
ent->file = pos + path_prefix_len;
if (ent->file && ent->file[0] == '.' && ent->file[1] == '/')
ent->file += 2;
last_frame2 = last_frame;
last_frame = ent;
}
if (last_frame2 == 0)
return;
const char *last = last_frame->func;
#ifndef TSAN_GO
const char *last2 = last_frame2->func;
// Strip frame above 'main'
if (last2 && 0 == internal_strcmp(last2, "main")) {
last_frame2->next = 0;
// Strip our internal thread start routine.
} else if (last && 0 == internal_strcmp(last, "__tsan_thread_start_func")) {
last_frame2->next = 0;
// Strip global ctors init.
} else if (last && 0 == internal_strcmp(last, "__do_global_ctors_aux")) {
last_frame2->next = 0;
// If both are 0, then we probably just failed to symbolize.
} else if (last || last2) {
// Ensure that we recovered stack completely. Trimmed stack
// can actually happen if we do not instrument some code,
// so it's only a debug print. However we must try hard to not miss it
// due to our fault.
DPrintf("Bottom stack frame of stack %zx is missed\n", stack->pc);
}
#else
// The last frame always point into runtime (gosched0, goexit0, runtime.main).
last_frame2->next = 0;
(void)last;
#endif
}
#ifndef TSAN_GO
ReportStack *SymbolizeStackId(u32 stack_id) {
uptr ssz = 0;
const uptr *stack = StackDepotGet(stack_id, &ssz);
if (stack == 0)
return 0;
StackTrace trace;
trace.Init(stack, ssz);
return SymbolizeStack(trace);
}
#endif
static ReportStack *SymbolizeStack(const StackTrace& trace) {
if (trace.IsEmpty())
return 0;
ReportStack *stack = 0;
for (uptr si = 0; si < trace.Size(); si++) {
const uptr pc = trace.Get(si);
#ifndef TSAN_GO
// We obtain the return address, that is, address of the next instruction,
// so offset it by 1 byte.
const uptr pc1 = __sanitizer::StackTrace::GetPreviousInstructionPc(pc);
#else
// FIXME(dvyukov): Go sometimes uses address of a function as top pc.
uptr pc1 = pc;
if (si != trace.Size() - 1)
pc1 -= 1;
#endif
ReportStack *ent = SymbolizeCode(pc1);
CHECK_NE(ent, 0);
ReportStack *last = ent;
while (last->next) {
last->pc = pc; // restore original pc for report
last = last->next;
}
last->pc = pc; // restore original pc for report
last->next = stack;
stack = ent;
}
StackStripMain(stack);
return stack;
}
ScopedReport::ScopedReport(ReportType typ) {
ctx_ = CTX();
ctx_->thread_registry->CheckLocked();
void *mem = internal_alloc(MBlockReport, sizeof(ReportDesc));
rep_ = new(mem) ReportDesc;
rep_->typ = typ;
ctx_->report_mtx.Lock();
CommonSanitizerReportMutex.Lock();
}
ScopedReport::~ScopedReport() {
CommonSanitizerReportMutex.Unlock();
ctx_->report_mtx.Unlock();
DestroyAndFree(rep_);
}
void ScopedReport::AddStack(const StackTrace *stack) {
ReportStack **rs = rep_->stacks.PushBack();
*rs = SymbolizeStack(*stack);
}
void ScopedReport::AddMemoryAccess(uptr addr, Shadow s,
const StackTrace *stack, const MutexSet *mset) {
void *mem = internal_alloc(MBlockReportMop, sizeof(ReportMop));
ReportMop *mop = new(mem) ReportMop;
rep_->mops.PushBack(mop);
mop->tid = s.tid();
mop->addr = addr + s.addr0();
mop->size = s.size();
mop->write = s.IsWrite();
mop->atomic = s.IsAtomic();
mop->stack = SymbolizeStack(*stack);
for (uptr i = 0; i < mset->Size(); i++) {
MutexSet::Desc d = mset->Get(i);
u64 uid = 0;
uptr addr = SyncVar::SplitId(d.id, &uid);
SyncVar *s = ctx_->synctab.GetIfExistsAndLock(addr, false);
// Check that the mutex is still alive.
// Another mutex can be created at the same address,
// so check uid as well.
if (s && s->CheckId(uid)) {
ReportMopMutex mtx = {s->uid, d.write};
mop->mset.PushBack(mtx);
AddMutex(s);
} else {
ReportMopMutex mtx = {d.id, d.write};
mop->mset.PushBack(mtx);
AddMutex(d.id);
}
if (s)
s->mtx.ReadUnlock();
}
}
void ScopedReport::AddThread(const ThreadContext *tctx) {
for (uptr i = 0; i < rep_->threads.Size(); i++) {
if ((u32)rep_->threads[i]->id == tctx->tid)
return;
}
void *mem = internal_alloc(MBlockReportThread, sizeof(ReportThread));
ReportThread *rt = new(mem) ReportThread();
rep_->threads.PushBack(rt);
rt->id = tctx->tid;
rt->pid = tctx->os_id;
rt->running = (tctx->status == ThreadStatusRunning);
rt->name = tctx->name ? internal_strdup(tctx->name) : 0;
rt->parent_tid = tctx->parent_tid;
rt->stack = 0;
#ifdef TSAN_GO
rt->stack = SymbolizeStack(tctx->creation_stack);
#else
rt->stack = SymbolizeStackId(tctx->creation_stack_id);
#endif
}
#ifndef TSAN_GO
static ThreadContext *FindThreadByUidLocked(int unique_id) {
Context *ctx = CTX();
ctx->thread_registry->CheckLocked();
for (unsigned i = 0; i < kMaxTid; i++) {
ThreadContext *tctx = static_cast<ThreadContext*>(
ctx->thread_registry->GetThreadLocked(i));
if (tctx && tctx->unique_id == (u32)unique_id) {
return tctx;
}
}
return 0;
}
static ThreadContext *FindThreadByTidLocked(int tid) {
Context *ctx = CTX();
ctx->thread_registry->CheckLocked();
return static_cast<ThreadContext*>(
ctx->thread_registry->GetThreadLocked(tid));
}
static bool IsInStackOrTls(ThreadContextBase *tctx_base, void *arg) {
uptr addr = (uptr)arg;
ThreadContext *tctx = static_cast<ThreadContext*>(tctx_base);
if (tctx->status != ThreadStatusRunning)
return false;
ThreadState *thr = tctx->thr;
CHECK(thr);
return ((addr >= thr->stk_addr && addr < thr->stk_addr + thr->stk_size) ||
(addr >= thr->tls_addr && addr < thr->tls_addr + thr->tls_size));
}
ThreadContext *IsThreadStackOrTls(uptr addr, bool *is_stack) {
Context *ctx = CTX();
ctx->thread_registry->CheckLocked();
ThreadContext *tctx = static_cast<ThreadContext*>(
ctx->thread_registry->FindThreadContextLocked(IsInStackOrTls,
(void*)addr));
if (!tctx)
return 0;
ThreadState *thr = tctx->thr;
CHECK(thr);
*is_stack = (addr >= thr->stk_addr && addr < thr->stk_addr + thr->stk_size);
return tctx;
}
#endif
void ScopedReport::AddMutex(const SyncVar *s) {
for (uptr i = 0; i < rep_->mutexes.Size(); i++) {
if (rep_->mutexes[i]->id == s->uid)
return;
}
void *mem = internal_alloc(MBlockReportMutex, sizeof(ReportMutex));
ReportMutex *rm = new(mem) ReportMutex();
rep_->mutexes.PushBack(rm);
rm->id = s->uid;
rm->destroyed = false;
rm->stack = 0;
#ifndef TSAN_GO
rm->stack = SymbolizeStackId(s->creation_stack_id);
#endif
}
void ScopedReport::AddMutex(u64 id) {
for (uptr i = 0; i < rep_->mutexes.Size(); i++) {
if (rep_->mutexes[i]->id == id)
return;
}
void *mem = internal_alloc(MBlockReportMutex, sizeof(ReportMutex));
ReportMutex *rm = new(mem) ReportMutex();
rep_->mutexes.PushBack(rm);
rm->id = id;
rm->destroyed = true;
rm->stack = 0;
}
void ScopedReport::AddLocation(uptr addr, uptr size) {
if (addr == 0)
return;
#ifndef TSAN_GO
int fd = -1;
int creat_tid = -1;
u32 creat_stack = 0;
if (FdLocation(addr, &fd, &creat_tid, &creat_stack)
|| FdLocation(AlternativeAddress(addr), &fd, &creat_tid, &creat_stack)) {
void *mem = internal_alloc(MBlockReportLoc, sizeof(ReportLocation));
ReportLocation *loc = new(mem) ReportLocation();
rep_->locs.PushBack(loc);
loc->type = ReportLocationFD;
loc->fd = fd;
loc->tid = creat_tid;
loc->stack = SymbolizeStackId(creat_stack);
ThreadContext *tctx = FindThreadByUidLocked(creat_tid);
if (tctx)
AddThread(tctx);
return;
}
MBlock *b = 0;
if (allocator()->PointerIsMine((void*)addr)
&& (b = user_mblock(0, (void*)addr))) {
ThreadContext *tctx = FindThreadByTidLocked(b->Tid());
void *mem = internal_alloc(MBlockReportLoc, sizeof(ReportLocation));
ReportLocation *loc = new(mem) ReportLocation();
rep_->locs.PushBack(loc);
loc->type = ReportLocationHeap;
loc->addr = (uptr)allocator()->GetBlockBegin((void*)addr);
loc->size = b->Size();
loc->tid = tctx ? tctx->tid : b->Tid();
loc->name = 0;
loc->file = 0;
loc->line = 0;
loc->stack = 0;
loc->stack = SymbolizeStackId(b->StackId());
if (tctx)
AddThread(tctx);
return;
}
bool is_stack = false;
if (ThreadContext *tctx = IsThreadStackOrTls(addr, &is_stack)) {
void *mem = internal_alloc(MBlockReportLoc, sizeof(ReportLocation));
ReportLocation *loc = new(mem) ReportLocation();
rep_->locs.PushBack(loc);
loc->type = is_stack ? ReportLocationStack : ReportLocationTLS;
loc->tid = tctx->tid;
AddThread(tctx);
}
ReportLocation *loc = SymbolizeData(addr);
if (loc) {
rep_->locs.PushBack(loc);
return;
}
#endif
}
#ifndef TSAN_GO
void ScopedReport::AddSleep(u32 stack_id) {
rep_->sleep = SymbolizeStackId(stack_id);
}
#endif
void ScopedReport::SetCount(int count) {
rep_->count = count;
}
const ReportDesc *ScopedReport::GetReport() const {
return rep_;
}
void RestoreStack(int tid, const u64 epoch, StackTrace *stk, MutexSet *mset) {
// This function restores stack trace and mutex set for the thread/epoch.
// It does so by getting stack trace and mutex set at the beginning of
// trace part, and then replaying the trace till the given epoch.
Context *ctx = CTX();
ctx->thread_registry->CheckLocked();
ThreadContext *tctx = static_cast<ThreadContext*>(
ctx->thread_registry->GetThreadLocked(tid));
if (tctx == 0)
return;
if (tctx->status != ThreadStatusRunning
&& tctx->status != ThreadStatusFinished
&& tctx->status != ThreadStatusDead)
return;
Trace* trace = ThreadTrace(tctx->tid);
Lock l(&trace->mtx);
const int partidx = (epoch / kTracePartSize) % TraceParts();
TraceHeader* hdr = &trace->headers[partidx];
if (epoch < hdr->epoch0)
return;
const u64 epoch0 = RoundDown(epoch, TraceSize());
const u64 eend = epoch % TraceSize();
const u64 ebegin = RoundDown(eend, kTracePartSize);
DPrintf("#%d: RestoreStack epoch=%zu ebegin=%zu eend=%zu partidx=%d\n",
tid, (uptr)epoch, (uptr)ebegin, (uptr)eend, partidx);
InternalScopedBuffer<uptr> stack(kShadowStackSize);
for (uptr i = 0; i < hdr->stack0.Size(); i++) {
stack[i] = hdr->stack0.Get(i);
DPrintf2(" #%02lu: pc=%zx\n", i, stack[i]);
}
if (mset)
*mset = hdr->mset0;
uptr pos = hdr->stack0.Size();
Event *events = (Event*)GetThreadTrace(tid);
for (uptr i = ebegin; i <= eend; i++) {
Event ev = events[i];
EventType typ = (EventType)(ev >> 61);
uptr pc = (uptr)(ev & ((1ull << 61) - 1));
DPrintf2(" %zu typ=%d pc=%zx\n", i, typ, pc);
if (typ == EventTypeMop) {
stack[pos] = pc;
} else if (typ == EventTypeFuncEnter) {
stack[pos++] = pc;
} else if (typ == EventTypeFuncExit) {
if (pos > 0)
pos--;
}
if (mset) {
if (typ == EventTypeLock) {
mset->Add(pc, true, epoch0 + i);
} else if (typ == EventTypeUnlock) {
mset->Del(pc, true);
} else if (typ == EventTypeRLock) {
mset->Add(pc, false, epoch0 + i);
} else if (typ == EventTypeRUnlock) {
mset->Del(pc, false);
}
}
for (uptr j = 0; j <= pos; j++)
DPrintf2(" #%zu: %zx\n", j, stack[j]);
}
if (pos == 0 && stack[0] == 0)
return;
pos++;
stk->Init(stack.data(), pos);
}
static bool HandleRacyStacks(ThreadState *thr, const StackTrace (&traces)[2],
uptr addr_min, uptr addr_max) {
Context *ctx = CTX();
bool equal_stack = false;
RacyStacks hash;
if (flags()->suppress_equal_stacks) {
hash.hash[0] = md5_hash(traces[0].Begin(), traces[0].Size() * sizeof(uptr));
hash.hash[1] = md5_hash(traces[1].Begin(), traces[1].Size() * sizeof(uptr));
for (uptr i = 0; i < ctx->racy_stacks.Size(); i++) {
if (hash == ctx->racy_stacks[i]) {
DPrintf("ThreadSanitizer: suppressing report as doubled (stack)\n");
equal_stack = true;
break;
}
}
}
bool equal_address = false;
RacyAddress ra0 = {addr_min, addr_max};
if (flags()->suppress_equal_addresses) {
for (uptr i = 0; i < ctx->racy_addresses.Size(); i++) {
RacyAddress ra2 = ctx->racy_addresses[i];
uptr maxbeg = max(ra0.addr_min, ra2.addr_min);
uptr minend = min(ra0.addr_max, ra2.addr_max);
if (maxbeg < minend) {
DPrintf("ThreadSanitizer: suppressing report as doubled (addr)\n");
equal_address = true;
break;
}
}
}
if (equal_stack || equal_address) {
if (!equal_stack)
ctx->racy_stacks.PushBack(hash);
if (!equal_address)
ctx->racy_addresses.PushBack(ra0);
return true;
}
return false;
}
static void AddRacyStacks(ThreadState *thr, const StackTrace (&traces)[2],
uptr addr_min, uptr addr_max) {
Context *ctx = CTX();
if (flags()->suppress_equal_stacks) {
RacyStacks hash;
hash.hash[0] = md5_hash(traces[0].Begin(), traces[0].Size() * sizeof(uptr));
hash.hash[1] = md5_hash(traces[1].Begin(), traces[1].Size() * sizeof(uptr));
ctx->racy_stacks.PushBack(hash);
}
if (flags()->suppress_equal_addresses) {
RacyAddress ra0 = {addr_min, addr_max};
ctx->racy_addresses.PushBack(ra0);
}
}
bool OutputReport(Context *ctx,
const ScopedReport &srep,
const ReportStack *suppress_stack1,
const ReportStack *suppress_stack2,
const ReportLocation *suppress_loc) {
atomic_store(&ctx->last_symbolize_time_ns, NanoTime(), memory_order_relaxed);
const ReportDesc *rep = srep.GetReport();
Suppression *supp = 0;
uptr suppress_pc = IsSuppressed(rep->typ, suppress_stack1, &supp);
if (suppress_pc == 0)
suppress_pc = IsSuppressed(rep->typ, suppress_stack2, &supp);
if (suppress_pc == 0)
suppress_pc = IsSuppressed(rep->typ, suppress_loc, &supp);
if (suppress_pc != 0) {
FiredSuppression s = {srep.GetReport()->typ, suppress_pc, supp};
ctx->fired_suppressions.push_back(s);
}
if (OnReport(rep, suppress_pc != 0))
return false;
PrintReport(rep);
ctx->nreported++;
if (flags()->halt_on_error)
internal__exit(flags()->exitcode);
return true;
}
bool IsFiredSuppression(Context *ctx,
const ScopedReport &srep,
const StackTrace &trace) {
for (uptr k = 0; k < ctx->fired_suppressions.size(); k++) {
if (ctx->fired_suppressions[k].type != srep.GetReport()->typ)
continue;
for (uptr j = 0; j < trace.Size(); j++) {
FiredSuppression *s = &ctx->fired_suppressions[k];
if (trace.Get(j) == s->pc) {
if (s->supp)
s->supp->hit_count++;
return true;
}
}
}
return false;
}
static bool IsFiredSuppression(Context *ctx,
const ScopedReport &srep,
uptr addr) {
for (uptr k = 0; k < ctx->fired_suppressions.size(); k++) {
if (ctx->fired_suppressions[k].type != srep.GetReport()->typ)
continue;
FiredSuppression *s = &ctx->fired_suppressions[k];
if (addr == s->pc) {
if (s->supp)
s->supp->hit_count++;
return true;
}
}
return false;
}
bool FrameIsInternal(const ReportStack *frame) {
return frame != 0 && frame->file != 0
&& (internal_strstr(frame->file, "tsan_interceptors.cc") ||
internal_strstr(frame->file, "sanitizer_common_interceptors.inc") ||
internal_strstr(frame->file, "tsan_interface_"));
}
// On programs that use Java we see weird reports like:
// WARNING: ThreadSanitizer: data race (pid=22512)
// Read of size 8 at 0x7d2b00084318 by thread 100:
// #0 memcpy tsan_interceptors.cc:406 (foo+0x00000d8dfae3)
// #1 <null> <null>:0 (0x7f7ad9b40193)
// Previous write of size 8 at 0x7d2b00084318 by thread 105:
// #0 strncpy tsan_interceptors.cc:501 (foo+0x00000d8e0919)
// #1 <null> <null>:0 (0x7f7ad9b42707)
static bool IsJavaNonsense(const ReportDesc *rep) {
#ifndef TSAN_GO
for (uptr i = 0; i < rep->mops.Size(); i++) {
ReportMop *mop = rep->mops[i];
ReportStack *frame = mop->stack;
if (frame == 0
|| (frame->func == 0 && frame->file == 0 && frame->line == 0
&& frame->module == 0)) {
return true;
}
if (FrameIsInternal(frame)) {
frame = frame->next;
if (frame == 0
|| (frame->func == 0 && frame->file == 0 && frame->line == 0
&& frame->module == 0)) {
if (frame) {
FiredSuppression supp = {rep->typ, frame->pc, 0};
CTX()->fired_suppressions.push_back(supp);
}
return true;
}
}
}
#endif
return false;
}
static bool RaceBetweenAtomicAndFree(ThreadState *thr) {
Shadow s0(thr->racy_state[0]);
Shadow s1(thr->racy_state[1]);
CHECK(!(s0.IsAtomic() && s1.IsAtomic()));
if (!s0.IsAtomic() && !s1.IsAtomic())
return true;
if (s0.IsAtomic() && s1.IsFreed())
return true;
if (s1.IsAtomic() && thr->is_freeing)
return true;
return false;
}
void ReportRace(ThreadState *thr) {
if (!flags()->report_bugs)
return;
ScopedInRtl in_rtl;
if (!flags()->report_atomic_races && !RaceBetweenAtomicAndFree(thr))
return;
bool freed = false;
{
Shadow s(thr->racy_state[1]);
freed = s.GetFreedAndReset();
thr->racy_state[1] = s.raw();
}
uptr addr = ShadowToMem((uptr)thr->racy_shadow_addr);
uptr addr_min = 0;
uptr addr_max = 0;
{
uptr a0 = addr + Shadow(thr->racy_state[0]).addr0();
uptr a1 = addr + Shadow(thr->racy_state[1]).addr0();
uptr e0 = a0 + Shadow(thr->racy_state[0]).size();
uptr e1 = a1 + Shadow(thr->racy_state[1]).size();
addr_min = min(a0, a1);
addr_max = max(e0, e1);
if (IsExpectedReport(addr_min, addr_max - addr_min))
return;
}
Context *ctx = CTX();
ThreadRegistryLock l0(ctx->thread_registry);
ReportType typ = ReportTypeRace;
if (thr->is_vptr_access)
typ = ReportTypeVptrRace;
else if (freed)
typ = ReportTypeUseAfterFree;
ScopedReport rep(typ);
if (IsFiredSuppression(ctx, rep, addr))
return;
const uptr kMop = 2;
StackTrace traces[kMop];
const uptr toppc = TraceTopPC(thr);
traces[0].ObtainCurrent(thr, toppc);
if (IsFiredSuppression(ctx, rep, traces[0]))
return;
InternalScopedBuffer<MutexSet> mset2(1);
new(mset2.data()) MutexSet();
Shadow s2(thr->racy_state[1]);
RestoreStack(s2.tid(), s2.epoch(), &traces[1], mset2.data());
if (IsFiredSuppression(ctx, rep, traces[1]))
return;
if (HandleRacyStacks(thr, traces, addr_min, addr_max))
return;
for (uptr i = 0; i < kMop; i++) {
Shadow s(thr->racy_state[i]);
rep.AddMemoryAccess(addr, s, &traces[i],
i == 0 ? &thr->mset : mset2.data());
}
if (flags()->suppress_java && IsJavaNonsense(rep.GetReport()))
return;
for (uptr i = 0; i < kMop; i++) {
FastState s(thr->racy_state[i]);
ThreadContext *tctx = static_cast<ThreadContext*>(
ctx->thread_registry->GetThreadLocked(s.tid()));
if (s.epoch() < tctx->epoch0 || s.epoch() > tctx->epoch1)
continue;
rep.AddThread(tctx);
}
rep.AddLocation(addr_min, addr_max - addr_min);
#ifndef TSAN_GO
{ // NOLINT
Shadow s(thr->racy_state[1]);
if (s.epoch() <= thr->last_sleep_clock.get(s.tid()))
rep.AddSleep(thr->last_sleep_stack_id);
}
#endif
ReportLocation *suppress_loc = rep.GetReport()->locs.Size() ?
rep.GetReport()->locs[0] : 0;
if (!OutputReport(ctx, rep, rep.GetReport()->mops[0]->stack,
rep.GetReport()->mops[1]->stack,
suppress_loc))
return;
AddRacyStacks(thr, traces, addr_min, addr_max);
}
void PrintCurrentStack(ThreadState *thr, uptr pc) {
StackTrace trace;
trace.ObtainCurrent(thr, pc);
PrintStack(SymbolizeStack(trace));
}
void PrintCurrentStackSlow() {
#ifndef TSAN_GO
__sanitizer::StackTrace *ptrace = new(internal_alloc(MBlockStackTrace,
sizeof(__sanitizer::StackTrace))) __sanitizer::StackTrace;
ptrace->Unwind(kStackTraceMax, __sanitizer::StackTrace::GetCurrentPc(),
0, 0, 0, false);
for (uptr i = 0; i < ptrace->size / 2; i++) {
uptr tmp = ptrace->trace[i];
ptrace->trace[i] = ptrace->trace[ptrace->size - i - 1];
ptrace->trace[ptrace->size - i - 1] = tmp;
}
StackTrace trace;
trace.Init(ptrace->trace, ptrace->size);
PrintStack(SymbolizeStack(trace));
#endif
}
} // namespace __tsan
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