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tsan: use stack depot for goroutine creation stacks (as C++ threads do) 

llvm-svn: 204326
This commit is contained in:
Dmitry Vyukov 2014-03-20 10:19:02 +00:00
parent 87d13e5ec1
commit 6e2557769c
4 changed files with 6 additions and 20 deletions
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4
compiler-rt/lib/tsan/rtl/tsan_rtl.h
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@ -485,11 +485,7 @@ class ThreadContext : public ThreadContextBase {
explicit ThreadContext(int tid);
~ThreadContext();
ThreadState *thr;
#ifdef TSAN_GO
StackTrace creation_stack;
#else
u32 creation_stack_id;
#endif
SyncClock sync;
// Epoch at which the thread had started.
// If we see an event from the thread stamped by an older epoch,

11
compiler-rt/lib/tsan/rtl/tsan_rtl_report.cc
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@ -104,8 +104,9 @@ static void StackStripMain(ReportStack *stack) {
#endif
}
#ifndef TSAN_GO
ReportStack *SymbolizeStackId(u32 stack_id) {
if (stack_id == 0)
return 0;
uptr ssz = 0;
const uptr *stack = StackDepotGet(stack_id, &ssz);
if (stack == 0)
@ -114,7 +115,6 @@ ReportStack *SymbolizeStackId(u32 stack_id) {
trace.Init(stack, ssz);
return SymbolizeStack(trace);
}
#endif
static ReportStack *SymbolizeStack(const StackTrace& trace) {
if (trace.IsEmpty())
@ -201,11 +201,7 @@ void ScopedReport::AddThread(const ThreadContext *tctx) {
rt->name = internal_strdup(tctx->name);
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
@ -266,10 +262,7 @@ void ScopedReport::AddMutex(const SyncVar *s) {
rm->id = s->uid;
rm->addr = s->addr;
rm->destroyed = false;
rm->stack = 0;
#ifndef TSAN_GO
rm->stack = SymbolizeStackId(s->creation_stack_id);
#endif
}
u64 ScopedReport::AddMutex(u64 id) {

4
compiler-rt/lib/tsan/rtl/tsan_rtl_thread.cc
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@ -59,11 +59,7 @@ void ThreadContext::OnCreated(void *arg) {
// Can't increment epoch w/o writing to the trace as well.
TraceAddEvent(args->thr, args->thr->fast_state, EventTypeMop, 0);
ReleaseImpl(args->thr, 0, &sync);
#ifdef TSAN_GO
creation_stack.ObtainCurrent(args->thr, args->pc);
#else
creation_stack_id = CurrentStackId(args->thr, args->pc);
#endif
if (reuse_count == 0)
StatInc(args->thr, StatThreadMaxTid);
}

7
compiler-rt/lib/tsan/rtl/tsan_sync.cc
View File

@ -23,6 +23,7 @@ SyncVar::SyncVar(uptr addr, u64 uid)
: mtx(MutexTypeSyncVar, StatMtxSyncVar)
, addr(addr)
, uid(uid)
, creation_stack_id()
, owner_tid(kInvalidTid)
, last_lock()
, recursion()
@ -64,9 +65,9 @@ SyncVar* SyncTab::Create(ThreadState *thr, uptr pc, uptr addr) {
void *mem = internal_alloc(MBlockSync, sizeof(SyncVar));
const u64 uid = atomic_fetch_add(&uid_gen_, 1, memory_order_relaxed);
SyncVar *res = new(mem) SyncVar(addr, uid);
#ifndef TSAN_GO
res->creation_stack_id = CurrentStackId(thr, pc);
#endif
res->creation_stack_id = 0;
if (!kGoMode) // Go does not use them
res->creation_stack_id = CurrentStackId(thr, pc);
if (flags()->detect_deadlocks)
DDMutexInit(thr, pc, res);
return res;