Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/CMakeLists.txt

@@ -0,0 +1,19 @@
+set(TSAN_RTL_TEST_SOURCES
+  tsan_bench.cc
+  tsan_mop.cc
+  tsan_mutex.cc
+  tsan_posix.cc
+  tsan_string.cc
+  tsan_test.cc
+  tsan_thread.cc)
+
+if(UNIX)
+  list(APPEND TSAN_RTL_TEST_SOURCES tsan_test_util_posix.cc)
+endif()
+
+set(TSAN_RTL_TEST_HEADERS
+  tsan_test_util.h)
+
+add_tsan_unittest(TsanRtlTest
+  SOURCES ${TSAN_RTL_TEST_SOURCES}
+  HEADERS ${TSAN_RTL_TEST_HEADERS})

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/tsan_bench.cc

@@ -0,0 +1,105 @@
+//===-- tsan_bench.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_test_util.h"
+#include "tsan_interface.h"
+#include "tsan_defs.h"
+#include "gtest/gtest.h"
+#include <stdint.h>
+
+const int kSize = 128;
+const int kRepeat = 2*1024*1024;
+
+void noinstr(void *p) {}
+
+template<typename T, void(*__tsan_mop)(void *p)>
+static void Benchmark() {
+  volatile T data[kSize];
+  for (int i = 0; i < kRepeat; i++) {
+    for (int j = 0; j < kSize; j++) {
+      __tsan_mop((void*)&data[j]);
+      data[j]++;
+    }
+  }
+}
+
+TEST(DISABLED_BENCH, Mop1) {
+  Benchmark<uint8_t, noinstr>();
+}
+
+TEST(DISABLED_BENCH, Mop1Read) {
+  Benchmark<uint8_t, __tsan_read1>();
+}
+
+TEST(DISABLED_BENCH, Mop1Write) {
+  Benchmark<uint8_t, __tsan_write1>();
+}
+
+TEST(DISABLED_BENCH, Mop2) {
+  Benchmark<uint16_t, noinstr>();
+}
+
+TEST(DISABLED_BENCH, Mop2Read) {
+  Benchmark<uint16_t, __tsan_read2>();
+}
+
+TEST(DISABLED_BENCH, Mop2Write) {
+  Benchmark<uint16_t, __tsan_write2>();
+}
+
+TEST(DISABLED_BENCH, Mop4) {
+  Benchmark<uint32_t, noinstr>();
+}
+
+TEST(DISABLED_BENCH, Mop4Read) {
+  Benchmark<uint32_t, __tsan_read4>();
+}
+
+TEST(DISABLED_BENCH, Mop4Write) {
+  Benchmark<uint32_t, __tsan_write4>();
+}
+
+TEST(DISABLED_BENCH, Mop8) {
+  Benchmark<uint8_t, noinstr>();
+}
+
+TEST(DISABLED_BENCH, Mop8Read) {
+  Benchmark<uint64_t, __tsan_read8>();
+}
+
+TEST(DISABLED_BENCH, Mop8Write) {
+  Benchmark<uint64_t, __tsan_write8>();
+}
+
+TEST(DISABLED_BENCH, FuncCall) {
+  for (int i = 0; i < kRepeat; i++) {
+    for (int j = 0; j < kSize; j++)
+      __tsan_func_entry((void*)(uintptr_t)j);
+    for (int j = 0; j < kSize; j++)
+      __tsan_func_exit();
+  }
+}
+
+TEST(DISABLED_BENCH, MutexLocal) {
+  Mutex m;
+  ScopedThread().Create(m);
+  for (int i = 0; i < 50; i++) {
+    ScopedThread t;
+    t.Lock(m);
+    t.Unlock(m);
+  }
+  for (int i = 0; i < 16*1024*1024; i++) {
+    m.Lock();
+    m.Unlock();
+  }
+  ScopedThread().Destroy(m);
+}

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/tsan_mop.cc

@@ -0,0 +1,233 @@
+//===-- tsan_mop.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_interface.h"
+#include "tsan_test_util.h"
+#include "gtest/gtest.h"
+#include <stddef.h>
+#include <stdint.h>
+
+TEST(ThreadSanitizer, SimpleWrite) {
+  ScopedThread t;
+  MemLoc l;
+  t.Write1(l);
+}
+
+TEST(ThreadSanitizer, SimpleWriteWrite) {
+  ScopedThread t1, t2;
+  MemLoc l1, l2;
+  t1.Write1(l1);
+  t2.Write1(l2);
+}
+
+TEST(ThreadSanitizer, WriteWriteRace) {
+  ScopedThread t1, t2;
+  MemLoc l;
+  t1.Write1(l);
+  t2.Write1(l, true);
+}
+
+TEST(ThreadSanitizer, ReadWriteRace) {
+  ScopedThread t1, t2;
+  MemLoc l;
+  t1.Read1(l);
+  t2.Write1(l, true);
+}
+
+TEST(ThreadSanitizer, WriteReadRace) {
+  ScopedThread t1, t2;
+  MemLoc l;
+  t1.Write1(l);
+  t2.Read1(l, true);
+}
+
+TEST(ThreadSanitizer, ReadReadNoRace) {
+  ScopedThread t1, t2;
+  MemLoc l;
+  t1.Read1(l);
+  t2.Read1(l);
+}
+
+TEST(ThreadSanitizer, WriteThenRead) {
+  MemLoc l;
+  ScopedThread t1, t2;
+  t1.Write1(l);
+  t1.Read1(l);
+  t2.Read1(l, true);
+}
+
+TEST(ThreadSanitizer, WriteThenLockedRead) {
+  Mutex m(Mutex::RW);
+  MainThread t0;
+  t0.Create(m);
+  MemLoc l;
+  {
+    ScopedThread t1, t2;
+
+    t1.Write8(l);
+
+    t1.Lock(m);
+    t1.Read8(l);
+    t1.Unlock(m);
+
+    t2.Read8(l, true);
+  }
+  t0.Destroy(m);
+}
+
+TEST(ThreadSanitizer, LockedWriteThenRead) {
+  Mutex m(Mutex::RW);
+  MainThread t0;
+  t0.Create(m);
+  MemLoc l;
+  {
+    ScopedThread t1, t2;
+
+    t1.Lock(m);
+    t1.Write8(l);
+    t1.Unlock(m);
+
+    t1.Read8(l);
+
+    t2.Read8(l, true);
+  }
+  t0.Destroy(m);
+}
+
+
+TEST(ThreadSanitizer, RaceWithOffset) {
+  ScopedThread t1, t2;
+  {
+    MemLoc l;
+    t1.Access(l.loc(), true, 8, false);
+    t2.Access((char*)l.loc() + 4, true, 4, true);
+  }
+  {
+    MemLoc l;
+    t1.Access(l.loc(), true, 8, false);
+    t2.Access((char*)l.loc() + 7, true, 1, true);
+  }
+  {
+    MemLoc l;
+    t1.Access((char*)l.loc() + 4, true, 4, false);
+    t2.Access((char*)l.loc() + 4, true, 2, true);
+  }
+  {
+    MemLoc l;
+    t1.Access((char*)l.loc() + 4, true, 4, false);
+    t2.Access((char*)l.loc() + 6, true, 2, true);
+  }
+  {
+    MemLoc l;
+    t1.Access((char*)l.loc() + 3, true, 2, false);
+    t2.Access((char*)l.loc() + 4, true, 1, true);
+  }
+  {
+    MemLoc l;
+    t1.Access((char*)l.loc() + 1, true, 8, false);
+    t2.Access((char*)l.loc() + 3, true, 1, true);
+  }
+}
+
+TEST(ThreadSanitizer, RaceWithOffset2) {
+  ScopedThread t1, t2;
+  {
+    MemLoc l;
+    t1.Access((char*)l.loc(), true, 4, false);
+    t2.Access((char*)l.loc() + 2, true, 1, true);
+  }
+  {
+    MemLoc l;
+    t1.Access((char*)l.loc() + 2, true, 1, false);
+    t2.Access((char*)l.loc(), true, 4, true);
+  }
+}
+
+TEST(ThreadSanitizer, NoRaceWithOffset) {
+  ScopedThread t1, t2;
+  {
+    MemLoc l;
+    t1.Access(l.loc(), true, 4, false);
+    t2.Access((char*)l.loc() + 4, true, 4, false);
+  }
+  {
+    MemLoc l;
+    t1.Access((char*)l.loc() + 3, true, 2, false);
+    t2.Access((char*)l.loc() + 1, true, 2, false);
+    t2.Access((char*)l.loc() + 5, true, 2, false);
+  }
+}
+
+TEST(ThreadSanitizer, RaceWithDeadThread) {
+  MemLoc l;
+  ScopedThread t;
+  ScopedThread().Write1(l);
+  t.Write1(l, true);
+}
+
+TEST(ThreadSanitizer, BenignRaceOnVptr) {
+  void *vptr_storage;
+  MemLoc vptr(&vptr_storage), val;
+  vptr_storage = val.loc();
+  ScopedThread t1, t2;
+  t1.VptrUpdate(vptr, val);
+  t2.Read8(vptr);
+}
+
+TEST(ThreadSanitizer, HarmfulRaceOnVptr) {
+  void *vptr_storage;
+  MemLoc vptr(&vptr_storage), val1, val2;
+  vptr_storage = val1.loc();
+  ScopedThread t1, t2;
+  t1.VptrUpdate(vptr, val2);
+  t2.Read8(vptr, true);
+}
+
+static void foo() {
+  volatile int x = 42;
+  int x2 = x;
+  (void)x2;
+}
+
+static void bar() {
+  volatile int x = 43;
+  int x2 = x;
+  (void)x2;
+}
+
+TEST(ThreadSanitizer, ReportDeadThread) {
+  MemLoc l;
+  ScopedThread t1;
+  {
+    ScopedThread t2;
+    t2.Call(&foo);
+    t2.Call(&bar);
+    t2.Write1(l);
+  }
+  t1.Write1(l, true);
+}
+
+struct ClassWithStatic {
+  static int Data[4];
+};
+
+int ClassWithStatic::Data[4];
+
+static void foobarbaz() {}
+
+TEST(ThreadSanitizer, ReportRace) {
+  ScopedThread t1;
+  MainThread().Access(&ClassWithStatic::Data, true, 4, false);
+  t1.Call(&foobarbaz);
+  t1.Access(&ClassWithStatic::Data, true, 2, true);
+  t1.Return();
+}

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/tsan_mutex.cc

@@ -0,0 +1,221 @@
+//===-- tsan_mutex.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 "sanitizer_common/sanitizer_atomic.h"
+#include "tsan_interface.h"
+#include "tsan_interface_ann.h"
+#include "tsan_test_util.h"
+#include "gtest/gtest.h"
+#include <stdint.h>
+
+namespace __tsan {
+
+TEST(ThreadSanitizer, BasicMutex) {
+  ScopedThread t;
+  Mutex m;
+  t.Create(m);
+
+  t.Lock(m);
+  t.Unlock(m);
+
+  CHECK(t.TryLock(m));
+  t.Unlock(m);
+
+  t.Lock(m);
+  CHECK(!t.TryLock(m));
+  t.Unlock(m);
+
+  t.Destroy(m);
+}
+
+TEST(ThreadSanitizer, BasicSpinMutex) {
+  ScopedThread t;
+  Mutex m(Mutex::Spin);
+  t.Create(m);
+
+  t.Lock(m);
+  t.Unlock(m);
+
+  CHECK(t.TryLock(m));
+  t.Unlock(m);
+
+  t.Lock(m);
+  CHECK(!t.TryLock(m));
+  t.Unlock(m);
+
+  t.Destroy(m);
+}
+
+TEST(ThreadSanitizer, BasicRwMutex) {
+  ScopedThread t;
+  Mutex m(Mutex::RW);
+  t.Create(m);
+
+  t.Lock(m);
+  t.Unlock(m);
+
+  CHECK(t.TryLock(m));
+  t.Unlock(m);
+
+  t.Lock(m);
+  CHECK(!t.TryLock(m));
+  t.Unlock(m);
+
+  t.ReadLock(m);
+  t.ReadUnlock(m);
+
+  CHECK(t.TryReadLock(m));
+  t.ReadUnlock(m);
+
+  t.Lock(m);
+  CHECK(!t.TryReadLock(m));
+  t.Unlock(m);
+
+  t.ReadLock(m);
+  CHECK(!t.TryLock(m));
+  t.ReadUnlock(m);
+
+  t.ReadLock(m);
+  CHECK(t.TryReadLock(m));
+  t.ReadUnlock(m);
+  t.ReadUnlock(m);
+
+  t.Destroy(m);
+}
+
+TEST(ThreadSanitizer, Mutex) {
+  Mutex m;
+  MainThread t0;
+  t0.Create(m);
+
+  ScopedThread t1, t2;
+  MemLoc l;
+  t1.Lock(m);
+  t1.Write1(l);
+  t1.Unlock(m);
+  t2.Lock(m);
+  t2.Write1(l);
+  t2.Unlock(m);
+  t2.Destroy(m);
+}
+
+TEST(ThreadSanitizer, SpinMutex) {
+  Mutex m(Mutex::Spin);
+  MainThread t0;
+  t0.Create(m);
+
+  ScopedThread t1, t2;
+  MemLoc l;
+  t1.Lock(m);
+  t1.Write1(l);
+  t1.Unlock(m);
+  t2.Lock(m);
+  t2.Write1(l);
+  t2.Unlock(m);
+  t2.Destroy(m);
+}
+
+TEST(ThreadSanitizer, RwMutex) {
+  Mutex m(Mutex::RW);
+  MainThread t0;
+  t0.Create(m);
+
+  ScopedThread t1, t2, t3;
+  MemLoc l;
+  t1.Lock(m);
+  t1.Write1(l);
+  t1.Unlock(m);
+  t2.Lock(m);
+  t2.Write1(l);
+  t2.Unlock(m);
+  t1.ReadLock(m);
+  t3.ReadLock(m);
+  t1.Read1(l);
+  t3.Read1(l);
+  t1.ReadUnlock(m);
+  t3.ReadUnlock(m);
+  t2.Lock(m);
+  t2.Write1(l);
+  t2.Unlock(m);
+  t2.Destroy(m);
+}
+
+TEST(ThreadSanitizer, StaticMutex) {
+  // Emulates statically initialized mutex.
+  Mutex m;
+  m.StaticInit();
+  {
+    ScopedThread t1, t2;
+    t1.Lock(m);
+    t1.Unlock(m);
+    t2.Lock(m);
+    t2.Unlock(m);
+  }
+  MainThread().Destroy(m);
+}
+
+static void *singleton_thread(void *param) {
+  atomic_uintptr_t *singleton = (atomic_uintptr_t *)param;
+  for (int i = 0; i < 4*1024*1024; i++) {
+    int *val = (int *)atomic_load(singleton, memory_order_acquire);
+    __tsan_acquire(singleton);
+    __tsan_read4(val);
+    CHECK_EQ(*val, 42);
+  }
+  return 0;
+}
+
+TEST(DISABLED_BENCH_ThreadSanitizer, Singleton) {
+  const int kClockSize = 100;
+  const int kThreadCount = 8;
+
+  // Puff off thread's clock.
+  for (int i = 0; i < kClockSize; i++) {
+    ScopedThread t1;
+    (void)t1;
+  }
+  // Create the singleton.
+  int val = 42;
+  __tsan_write4(&val);
+  atomic_uintptr_t singleton;
+  __tsan_release(&singleton);
+  atomic_store(&singleton, (uintptr_t)&val, memory_order_release);
+  // Create reader threads.
+  pthread_t threads[kThreadCount];
+  for (int t = 0; t < kThreadCount; t++)
+    pthread_create(&threads[t], 0, singleton_thread, &singleton);
+  for (int t = 0; t < kThreadCount; t++)
+    pthread_join(threads[t], 0);
+}
+
+TEST(DISABLED_BENCH_ThreadSanitizer, StopFlag) {
+  const int kClockSize = 100;
+  const int kIters = 16*1024*1024;
+
+  // Puff off thread's clock.
+  for (int i = 0; i < kClockSize; i++) {
+    ScopedThread t1;
+    (void)t1;
+  }
+  // Create the stop flag.
+  atomic_uintptr_t flag;
+  __tsan_release(&flag);
+  atomic_store(&flag, 0, memory_order_release);
+  // Read it a lot.
+  for (int i = 0; i < kIters; i++) {
+    uptr v = atomic_load(&flag, memory_order_acquire);
+    __tsan_acquire(&flag);
+    CHECK_EQ(v, 0);
+  }
+}
+
+}  // namespace __tsan

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/tsan_posix.cc

@@ -0,0 +1,155 @@
+//===-- tsan_posix.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_interface.h"
+#include "tsan_posix_util.h"
+#include "tsan_test_util.h"
+#include "gtest/gtest.h"
+#include <pthread.h>
+
+struct thread_key {
+  pthread_key_t key;
+  pthread_mutex_t *mtx;
+  int val;
+  int *cnt;
+  thread_key(pthread_key_t key, pthread_mutex_t *mtx, int val, int *cnt)
+    : key(key)
+    , mtx(mtx)
+    , val(val)
+    , cnt(cnt) {
+  }
+};
+
+static void thread_secific_dtor(void *v) {
+  thread_key *k = (thread_key *)v;
+  EXPECT_EQ(__interceptor_pthread_mutex_lock(k->mtx), 0);
+  (*k->cnt)++;
+  __tsan_write4(&k->cnt);
+  EXPECT_EQ(__interceptor_pthread_mutex_unlock(k->mtx), 0);
+  if (k->val == 42) {
+    // Okay.
+  } else if (k->val == 43 || k->val == 44) {
+    k->val--;
+    EXPECT_EQ(pthread_setspecific(k->key, k), 0);
+  } else {
+    ASSERT_TRUE(false);
+  }
+}
+
+static void *dtors_thread(void *p) {
+  thread_key *k = (thread_key *)p;
+  EXPECT_EQ(pthread_setspecific(k->key, k), 0);
+  return 0;
+}
+
+TEST(Posix, ThreadSpecificDtors) {
+  int cnt = 0;
+  pthread_key_t key;
+  EXPECT_EQ(pthread_key_create(&key, thread_secific_dtor), 0);
+  pthread_mutex_t mtx;
+  EXPECT_EQ(__interceptor_pthread_mutex_init(&mtx, 0), 0);
+  pthread_t th[3];
+  thread_key k1 = thread_key(key, &mtx, 42, &cnt);
+  thread_key k2 = thread_key(key, &mtx, 43, &cnt);
+  thread_key k3 = thread_key(key, &mtx, 44, &cnt);
+  EXPECT_EQ(__interceptor_pthread_create(&th[0], 0, dtors_thread, &k1), 0);
+  EXPECT_EQ(__interceptor_pthread_create(&th[1], 0, dtors_thread, &k2), 0);
+  EXPECT_EQ(__interceptor_pthread_join(th[0], 0), 0);
+  EXPECT_EQ(__interceptor_pthread_create(&th[2], 0, dtors_thread, &k3), 0);
+  EXPECT_EQ(__interceptor_pthread_join(th[1], 0), 0);
+  EXPECT_EQ(__interceptor_pthread_join(th[2], 0), 0);
+  EXPECT_EQ(pthread_key_delete(key), 0);
+  EXPECT_EQ(6, cnt);
+}
+
+#if !defined(__aarch64__) && !defined(__APPLE__)
+static __thread int local_var;
+
+static void *local_thread(void *p) {
+  __tsan_write1(&local_var);
+  __tsan_write1(&p);
+  if (p == 0)
+    return 0;
+  const int kThreads = 4;
+  pthread_t th[kThreads];
+  for (int i = 0; i < kThreads; i++)
+    EXPECT_EQ(__interceptor_pthread_create(&th[i], 0, local_thread,
+              (void*)((long)p - 1)), 0);  // NOLINT
+  for (int i = 0; i < kThreads; i++)
+    EXPECT_EQ(__interceptor_pthread_join(th[i], 0), 0);
+  return 0;
+}
+#endif
+
+TEST(Posix, ThreadLocalAccesses) {
+// The test is failing with high thread count for aarch64.
+// FIXME: track down the issue and re-enable the test.
+// On Darwin, we're running unit tests without interceptors and __thread is
+// using malloc and free, which causes false data race reports.  On rare
+// occasions on powerpc64le this test also fails.
+#if !defined(__aarch64__) && !defined(__APPLE__) && !defined(powerpc64le)
+  local_thread((void*)2);
+#endif
+}
+
+struct CondContext {
+  pthread_mutex_t m;
+  pthread_cond_t c;
+  int data;
+};
+
+static void *cond_thread(void *p) {
+  CondContext &ctx = *static_cast<CondContext*>(p);
+
+  EXPECT_EQ(__interceptor_pthread_mutex_lock(&ctx.m), 0);
+  EXPECT_EQ(ctx.data, 0);
+  ctx.data = 1;
+  EXPECT_EQ(__interceptor_pthread_cond_signal(&ctx.c), 0);
+  EXPECT_EQ(__interceptor_pthread_mutex_unlock(&ctx.m), 0);
+
+  EXPECT_EQ(__interceptor_pthread_mutex_lock(&ctx.m), 0);
+  while (ctx.data != 2)
+    EXPECT_EQ(__interceptor_pthread_cond_wait(&ctx.c, &ctx.m), 0);
+  EXPECT_EQ(__interceptor_pthread_mutex_unlock(&ctx.m), 0);
+
+  EXPECT_EQ(__interceptor_pthread_mutex_lock(&ctx.m), 0);
+  ctx.data = 3;
+  EXPECT_EQ(pthread_cond_broadcast(&ctx.c), 0);
+  EXPECT_EQ(__interceptor_pthread_mutex_unlock(&ctx.m), 0);
+
+  return 0;
+}
+
+TEST(Posix, CondBasic) {
+  CondContext ctx;
+  EXPECT_EQ(__interceptor_pthread_mutex_init(&ctx.m, 0), 0);
+  EXPECT_EQ(__interceptor_pthread_cond_init(&ctx.c, 0), 0);
+  ctx.data = 0;
+  pthread_t th;
+  EXPECT_EQ(__interceptor_pthread_create(&th, 0, cond_thread, &ctx), 0);
+
+  EXPECT_EQ(__interceptor_pthread_mutex_lock(&ctx.m), 0);
+  while (ctx.data != 1)
+    EXPECT_EQ(__interceptor_pthread_cond_wait(&ctx.c, &ctx.m), 0);
+  ctx.data = 2;
+  EXPECT_EQ(__interceptor_pthread_mutex_unlock(&ctx.m), 0);
+  EXPECT_EQ(pthread_cond_broadcast(&ctx.c), 0);
+
+  EXPECT_EQ(__interceptor_pthread_mutex_lock(&ctx.m), 0);
+  while (ctx.data != 3)
+    EXPECT_EQ(__interceptor_pthread_cond_wait(&ctx.c, &ctx.m), 0);
+  EXPECT_EQ(__interceptor_pthread_mutex_unlock(&ctx.m), 0);
+
+  EXPECT_EQ(__interceptor_pthread_join(th, 0), 0);
+  EXPECT_EQ(__interceptor_pthread_cond_destroy(&ctx.c), 0);
+  EXPECT_EQ(__interceptor_pthread_mutex_destroy(&ctx.m), 0);
+}

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/tsan_posix_util.h

@@ -0,0 +1,77 @@
+//===-- tsan_posix_util.h ---------------------------------------*- C++ -*-===//
+//
+//                     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.
+//
+// Test POSIX utils.
+//===----------------------------------------------------------------------===//
+#ifndef TSAN_POSIX_UTIL_H
+#define TSAN_POSIX_UTIL_H
+
+#include <pthread.h>
+
+#ifdef __APPLE__
+#define __interceptor_memcpy wrap_memcpy
+#define __interceptor_memset wrap_memset
+#define __interceptor_pthread_create wrap_pthread_create
+#define __interceptor_pthread_join wrap_pthread_join
+#define __interceptor_pthread_detach wrap_pthread_detach
+#define __interceptor_pthread_mutex_init wrap_pthread_mutex_init
+#define __interceptor_pthread_mutex_lock wrap_pthread_mutex_lock
+#define __interceptor_pthread_mutex_unlock wrap_pthread_mutex_unlock
+#define __interceptor_pthread_mutex_destroy wrap_pthread_mutex_destroy
+#define __interceptor_pthread_mutex_trylock wrap_pthread_mutex_trylock
+#define __interceptor_pthread_rwlock_init wrap_pthread_rwlock_init
+#define __interceptor_pthread_rwlock_destroy wrap_pthread_rwlock_destroy
+#define __interceptor_pthread_rwlock_trywrlock wrap_pthread_rwlock_trywrlock
+#define __interceptor_pthread_rwlock_wrlock wrap_pthread_rwlock_wrlock
+#define __interceptor_pthread_rwlock_unlock wrap_pthread_rwlock_unlock
+#define __interceptor_pthread_rwlock_rdlock wrap_pthread_rwlock_rdlock
+#define __interceptor_pthread_rwlock_tryrdlock wrap_pthread_rwlock_tryrdlock
+#define __interceptor_pthread_cond_init wrap_pthread_cond_init
+#define __interceptor_pthread_cond_signal wrap_pthread_cond_signal
+#define __interceptor_pthread_cond_broadcast wrap_pthread_cond_broadcast
+#define __interceptor_pthread_cond_wait wrap_pthread_cond_wait
+#define __interceptor_pthread_cond_destroy wrap_pthread_cond_destroy
+#endif
+
+extern "C" void *__interceptor_memcpy(void *, const void *, uptr);
+extern "C" void *__interceptor_memset(void *, int, uptr);
+extern "C" int __interceptor_pthread_create(pthread_t *thread,
+                                            const pthread_attr_t *attr,
+                                            void *(*start_routine)(void *),
+                                            void *arg);
+extern "C" int __interceptor_pthread_join(pthread_t thread, void **value_ptr);
+extern "C" int __interceptor_pthread_detach(pthread_t thread);
+
+extern "C" int __interceptor_pthread_mutex_init(
+    pthread_mutex_t *mutex, const pthread_mutexattr_t *attr);
+extern "C" int __interceptor_pthread_mutex_lock(pthread_mutex_t *mutex);
+extern "C" int __interceptor_pthread_mutex_unlock(pthread_mutex_t *mutex);
+extern "C" int __interceptor_pthread_mutex_destroy(pthread_mutex_t *mutex);
+extern "C" int __interceptor_pthread_mutex_trylock(pthread_mutex_t *mutex);
+
+extern "C" int __interceptor_pthread_rwlock_init(
+    pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr);
+extern "C" int __interceptor_pthread_rwlock_destroy(pthread_rwlock_t *rwlock);
+extern "C" int __interceptor_pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock);
+extern "C" int __interceptor_pthread_rwlock_wrlock(pthread_rwlock_t *rwlock);
+extern "C" int __interceptor_pthread_rwlock_unlock(pthread_rwlock_t *rwlock);
+extern "C" int __interceptor_pthread_rwlock_rdlock(pthread_rwlock_t *rwlock);
+extern "C" int __interceptor_pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock);
+
+extern "C" int __interceptor_pthread_cond_init(pthread_cond_t *cond,
+                                               const pthread_condattr_t *attr);
+extern "C" int __interceptor_pthread_cond_signal(pthread_cond_t *cond);
+extern "C" int __interceptor_pthread_cond_broadcast(pthread_cond_t *cond);
+extern "C" int __interceptor_pthread_cond_wait(pthread_cond_t *cond,
+                                               pthread_mutex_t *mutex);
+extern "C" int __interceptor_pthread_cond_destroy(pthread_cond_t *cond);
+
+#endif  // #ifndef TSAN_POSIX_UTIL_H

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/tsan_string.cc

@@ -0,0 +1,82 @@
+//===-- tsan_string.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_test_util.h"
+#include "gtest/gtest.h"
+#include <string.h>
+
+namespace __tsan {
+
+TEST(ThreadSanitizer, Memcpy) {
+  char data0[7] = {1, 2, 3, 4, 5, 6, 7};
+  char data[7] = {42, 42, 42, 42, 42, 42, 42};
+  MainThread().Memcpy(data+1, data0+1, 5);
+  EXPECT_EQ(data[0], 42);
+  EXPECT_EQ(data[1], 2);
+  EXPECT_EQ(data[2], 3);
+  EXPECT_EQ(data[3], 4);
+  EXPECT_EQ(data[4], 5);
+  EXPECT_EQ(data[5], 6);
+  EXPECT_EQ(data[6], 42);
+  MainThread().Memset(data+1, 13, 5);
+  EXPECT_EQ(data[0], 42);
+  EXPECT_EQ(data[1], 13);
+  EXPECT_EQ(data[2], 13);
+  EXPECT_EQ(data[3], 13);
+  EXPECT_EQ(data[4], 13);
+  EXPECT_EQ(data[5], 13);
+  EXPECT_EQ(data[6], 42);
+}
+
+TEST(ThreadSanitizer, MemcpyRace1) {
+  char *data = new char[10];
+  char *data1 = new char[10];
+  char *data2 = new char[10];
+  ScopedThread t1, t2;
+  t1.Memcpy(data, data1, 10);
+  t2.Memcpy(data, data2, 10, true);
+}
+
+TEST(ThreadSanitizer, MemcpyRace2) {
+  char *data = new char[10];
+  char *data1 = new char[10];
+  char *data2 = new char[10];
+  ScopedThread t1, t2;
+  t1.Memcpy(data+5, data1, 1);
+  t2.Memcpy(data+3, data2, 4, true);
+}
+
+TEST(ThreadSanitizer, MemcpyRace3) {
+  char *data = new char[10];
+  char *data1 = new char[10];
+  char *data2 = new char[10];
+  ScopedThread t1, t2;
+  t1.Memcpy(data, data1, 10);
+  t2.Memcpy(data1, data2, 10, true);
+}
+
+TEST(ThreadSanitizer, MemcpyStack) {
+  char *data = new char[10];
+  char *data1 = new char[10];
+  ScopedThread t1, t2;
+  t1.Memcpy(data, data1, 10);
+  t2.Memcpy(data, data1, 10, true);
+}
+
+TEST(ThreadSanitizer, MemsetRace1) {
+  char *data = new char[10];
+  ScopedThread t1, t2;
+  t1.Memset(data, 1, 10);
+  t2.Memset(data, 2, 10, true);
+}
+
+}  // namespace __tsan

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/tsan_test.cc

@@ -0,0 +1,66 @@
+//===-- tsan_test.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_interface.h"
+#include "tsan_test_util.h"
+#include "gtest/gtest.h"
+
+static void foo() {}
+static void bar() {}
+
+TEST(ThreadSanitizer, FuncCall) {
+  ScopedThread t1, t2;
+  MemLoc l;
+  t1.Write1(l);
+  t2.Call(foo);
+  t2.Call(bar);
+  t2.Write1(l, true);
+  t2.Return();
+  t2.Return();
+}
+
+// We use this function instead of main, as ISO C++ forbids taking the address
+// of main, which we need to pass inside __tsan_func_entry.
+int run_tests(int argc, char **argv) {
+  TestMutexBeforeInit();  // Mutexes must be usable before __tsan_init();
+  __tsan_init();
+  __tsan_func_entry(__builtin_return_address(0));
+  __tsan_func_entry((void*)((intptr_t)&run_tests + 1));
+
+  testing::GTEST_FLAG(death_test_style) = "threadsafe";
+  testing::InitGoogleTest(&argc, argv);
+  int res = RUN_ALL_TESTS();
+
+  __tsan_func_exit();
+  __tsan_func_exit();
+  return res;
+}
+
+const char *argv0;
+
+#ifdef __APPLE__
+// On Darwin, turns off symbolication and crash logs to make tests faster.
+extern "C" const char* __tsan_default_options() {
+  return "symbolize=false:abort_on_error=0";
+}
+#endif
+
+namespace __sanitizer {
+bool ReexecDisabled() {
+  return true;
+}
+}
+
+int main(int argc, char **argv) {
+  argv0 = argv[0];
+  return run_tests(argc, argv);
+}

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/tsan_test_util.h

@@ -0,0 +1,130 @@
+//===-- tsan_test_util.h ----------------------------------------*- C++ -*-===//
+//
+//                     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.
+//
+// Test utils.
+//===----------------------------------------------------------------------===//
+#ifndef TSAN_TEST_UTIL_H
+#define TSAN_TEST_UTIL_H
+
+void TestMutexBeforeInit();
+
+// A location of memory on which a race may be detected.
+class MemLoc {
+ public:
+  explicit MemLoc(int offset_from_aligned = 0);
+  explicit MemLoc(void *const real_addr) : loc_(real_addr) { }
+  ~MemLoc();
+  void *loc() const { return loc_; }
+ private:
+  void *const loc_;
+  MemLoc(const MemLoc&);
+  void operator = (const MemLoc&);
+};
+
+class Mutex {
+ public:
+  enum Type {
+    Normal,
+    RW,
+#ifndef __APPLE__
+    Spin
+#else
+    Spin = Normal
+#endif
+  };
+
+  explicit Mutex(Type type = Normal);
+  ~Mutex();
+
+  void Init();
+  void StaticInit();  // Emulates static initialization (tsan invisible).
+  void Destroy();
+  void Lock();
+  bool TryLock();
+  void Unlock();
+  void ReadLock();
+  bool TryReadLock();
+  void ReadUnlock();
+
+ private:
+  // Placeholder for pthread_mutex_t, CRITICAL_SECTION or whatever.
+  void *mtx_[128];
+  bool alive_;
+  const Type type_;
+
+  Mutex(const Mutex&);
+  void operator = (const Mutex&);
+};
+
+// A thread is started in CTOR and joined in DTOR.
+class ScopedThread {
+ public:
+  explicit ScopedThread(bool detached = false, bool main = false);
+  ~ScopedThread();
+  void Detach();
+
+  void Access(void *addr, bool is_write, int size, bool expect_race);
+  void Read(const MemLoc &ml, int size, bool expect_race = false) {
+    Access(ml.loc(), false, size, expect_race);
+  }
+  void Write(const MemLoc &ml, int size, bool expect_race = false) {
+    Access(ml.loc(), true, size, expect_race);
+  }
+  void Read1(const MemLoc &ml, bool expect_race = false) {
+    Read(ml, 1, expect_race); }
+  void Read2(const MemLoc &ml, bool expect_race = false) {
+    Read(ml, 2, expect_race); }
+  void Read4(const MemLoc &ml, bool expect_race = false) {
+    Read(ml, 4, expect_race); }
+  void Read8(const MemLoc &ml, bool expect_race = false) {
+    Read(ml, 8, expect_race); }
+  void Write1(const MemLoc &ml, bool expect_race = false) {
+    Write(ml, 1, expect_race); }
+  void Write2(const MemLoc &ml, bool expect_race = false) {
+    Write(ml, 2, expect_race); }
+  void Write4(const MemLoc &ml, bool expect_race = false) {
+    Write(ml, 4, expect_race); }
+  void Write8(const MemLoc &ml, bool expect_race = false) {
+    Write(ml, 8, expect_race); }
+
+  void VptrUpdate(const MemLoc &vptr, const MemLoc &new_val,
+                  bool expect_race = false);
+
+  void Call(void(*pc)());
+  void Return();
+
+  void Create(const Mutex &m);
+  void Destroy(const Mutex &m);
+  void Lock(const Mutex &m);
+  bool TryLock(const Mutex &m);
+  void Unlock(const Mutex &m);
+  void ReadLock(const Mutex &m);
+  bool TryReadLock(const Mutex &m);
+  void ReadUnlock(const Mutex &m);
+
+  void Memcpy(void *dst, const void *src, int size, bool expect_race = false);
+  void Memset(void *dst, int val, int size, bool expect_race = false);
+
+ private:
+  struct Impl;
+  Impl *impl_;
+  ScopedThread(const ScopedThread&);  // Not implemented.
+  void operator = (const ScopedThread&);  // Not implemented.
+};
+
+class MainThread : public ScopedThread {
+ public:
+  MainThread()
+    : ScopedThread(false, true) {
+  }
+};
+
+#endif  // #ifndef TSAN_TEST_UTIL_H

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/tsan_test_util_posix.cc

@@ -0,0 +1,478 @@
+//===-- tsan_test_util_posix.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.
+//
+// Test utils, Linux, FreeBSD, NetBSD and Darwin implementation.
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_common/sanitizer_atomic.h"
+#include "tsan_interface.h"
+#include "tsan_posix_util.h"
+#include "tsan_test_util.h"
+#include "tsan_report.h"
+
+#include "gtest/gtest.h"
+
+#include <assert.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+
+using namespace __tsan;  // NOLINT
+
+static __thread bool expect_report;
+static __thread bool expect_report_reported;
+static __thread ReportType expect_report_type;
+
+static void *BeforeInitThread(void *param) {
+  (void)param;
+  return 0;
+}
+
+static void AtExit() {
+}
+
+void TestMutexBeforeInit() {
+  // Mutexes must be usable before __tsan_init();
+  pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER;
+  __interceptor_pthread_mutex_lock(&mtx);
+  __interceptor_pthread_mutex_unlock(&mtx);
+  __interceptor_pthread_mutex_destroy(&mtx);
+  pthread_t thr;
+  __interceptor_pthread_create(&thr, 0, BeforeInitThread, 0);
+  __interceptor_pthread_join(thr, 0);
+  atexit(AtExit);
+}
+
+namespace __tsan {
+bool OnReport(const ReportDesc *rep, bool suppressed) {
+  if (expect_report) {
+    if (rep->typ != expect_report_type) {
+      printf("Expected report of type %d, got type %d\n",
+             (int)expect_report_type, (int)rep->typ);
+      EXPECT_TRUE(false) << "Wrong report type";
+      return false;
+    }
+  } else {
+    EXPECT_TRUE(false) << "Unexpected report";
+    return false;
+  }
+  expect_report_reported = true;
+  return true;
+}
+}  // namespace __tsan
+
+static void* allocate_addr(int size, int offset_from_aligned = 0) {
+  static uintptr_t foo;
+  static atomic_uintptr_t uniq = {(uintptr_t)&foo};  // Some real address.
+  const int kAlign = 16;
+  CHECK(offset_from_aligned < kAlign);
+  size = (size + 2 * kAlign) & ~(kAlign - 1);
+  uintptr_t addr = atomic_fetch_add(&uniq, size, memory_order_relaxed);
+  return (void*)(addr + offset_from_aligned);
+}
+
+MemLoc::MemLoc(int offset_from_aligned)
+  : loc_(allocate_addr(16, offset_from_aligned)) {
+}
+
+MemLoc::~MemLoc() {
+}
+
+Mutex::Mutex(Type type)
+  : alive_()
+  , type_(type) {
+}
+
+Mutex::~Mutex() {
+  CHECK(!alive_);
+}
+
+void Mutex::Init() {
+  CHECK(!alive_);
+  alive_ = true;
+  if (type_ == Normal)
+    CHECK_EQ(__interceptor_pthread_mutex_init((pthread_mutex_t*)mtx_, 0), 0);
+#ifndef __APPLE__
+  else if (type_ == Spin)
+    CHECK_EQ(pthread_spin_init((pthread_spinlock_t*)mtx_, 0), 0);
+#endif
+  else if (type_ == RW)
+    CHECK_EQ(__interceptor_pthread_rwlock_init((pthread_rwlock_t*)mtx_, 0), 0);
+  else
+    CHECK(0);
+}
+
+void Mutex::StaticInit() {
+  CHECK(!alive_);
+  CHECK(type_ == Normal);
+  alive_ = true;
+  pthread_mutex_t tmp = PTHREAD_MUTEX_INITIALIZER;
+  memcpy(mtx_, &tmp, sizeof(tmp));
+}
+
+void Mutex::Destroy() {
+  CHECK(alive_);
+  alive_ = false;
+  if (type_ == Normal)
+    CHECK_EQ(__interceptor_pthread_mutex_destroy((pthread_mutex_t*)mtx_), 0);
+#ifndef __APPLE__
+  else if (type_ == Spin)
+    CHECK_EQ(pthread_spin_destroy((pthread_spinlock_t*)mtx_), 0);
+#endif
+  else if (type_ == RW)
+    CHECK_EQ(__interceptor_pthread_rwlock_destroy((pthread_rwlock_t*)mtx_), 0);
+}
+
+void Mutex::Lock() {
+  CHECK(alive_);
+  if (type_ == Normal)
+    CHECK_EQ(__interceptor_pthread_mutex_lock((pthread_mutex_t*)mtx_), 0);
+#ifndef __APPLE__
+  else if (type_ == Spin)
+    CHECK_EQ(pthread_spin_lock((pthread_spinlock_t*)mtx_), 0);
+#endif
+  else if (type_ == RW)
+    CHECK_EQ(__interceptor_pthread_rwlock_wrlock((pthread_rwlock_t*)mtx_), 0);
+}
+
+bool Mutex::TryLock() {
+  CHECK(alive_);
+  if (type_ == Normal)
+    return __interceptor_pthread_mutex_trylock((pthread_mutex_t*)mtx_) == 0;
+#ifndef __APPLE__
+  else if (type_ == Spin)
+    return pthread_spin_trylock((pthread_spinlock_t*)mtx_) == 0;
+#endif
+  else if (type_ == RW)
+    return __interceptor_pthread_rwlock_trywrlock((pthread_rwlock_t*)mtx_) == 0;
+  return false;
+}
+
+void Mutex::Unlock() {
+  CHECK(alive_);
+  if (type_ == Normal)
+    CHECK_EQ(__interceptor_pthread_mutex_unlock((pthread_mutex_t*)mtx_), 0);
+#ifndef __APPLE__
+  else if (type_ == Spin)
+    CHECK_EQ(pthread_spin_unlock((pthread_spinlock_t*)mtx_), 0);
+#endif
+  else if (type_ == RW)
+    CHECK_EQ(__interceptor_pthread_rwlock_unlock((pthread_rwlock_t*)mtx_), 0);
+}
+
+void Mutex::ReadLock() {
+  CHECK(alive_);
+  CHECK(type_ == RW);
+  CHECK_EQ(__interceptor_pthread_rwlock_rdlock((pthread_rwlock_t*)mtx_), 0);
+}
+
+bool Mutex::TryReadLock() {
+  CHECK(alive_);
+  CHECK(type_ == RW);
+  return __interceptor_pthread_rwlock_tryrdlock((pthread_rwlock_t*)mtx_) ==  0;
+}
+
+void Mutex::ReadUnlock() {
+  CHECK(alive_);
+  CHECK(type_ == RW);
+  CHECK_EQ(__interceptor_pthread_rwlock_unlock((pthread_rwlock_t*)mtx_), 0);
+}
+
+struct Event {
+  enum Type {
+    SHUTDOWN,
+    READ,
+    WRITE,
+    VPTR_UPDATE,
+    CALL,
+    RETURN,
+    MUTEX_CREATE,
+    MUTEX_DESTROY,
+    MUTEX_LOCK,
+    MUTEX_TRYLOCK,
+    MUTEX_UNLOCK,
+    MUTEX_READLOCK,
+    MUTEX_TRYREADLOCK,
+    MUTEX_READUNLOCK,
+    MEMCPY,
+    MEMSET
+  };
+  Type type;
+  void *ptr;
+  uptr arg;
+  uptr arg2;
+  bool res;
+  bool expect_report;
+  ReportType report_type;
+
+  Event(Type type, const void *ptr = 0, uptr arg = 0, uptr arg2 = 0)
+    : type(type)
+    , ptr(const_cast<void*>(ptr))
+    , arg(arg)
+    , arg2(arg2)
+    , res()
+    , expect_report()
+    , report_type() {
+  }
+
+  void ExpectReport(ReportType type) {
+    expect_report = true;
+    report_type = type;
+  }
+};
+
+struct ScopedThread::Impl {
+  pthread_t thread;
+  bool main;
+  bool detached;
+  atomic_uintptr_t event;  // Event*
+
+  static void *ScopedThreadCallback(void *arg);
+  void send(Event *ev);
+  void HandleEvent(Event *ev);
+};
+
+void ScopedThread::Impl::HandleEvent(Event *ev) {
+  CHECK_EQ(expect_report, false);
+  expect_report = ev->expect_report;
+  expect_report_reported = false;
+  expect_report_type = ev->report_type;
+  switch (ev->type) {
+  case Event::READ:
+  case Event::WRITE: {
+    void (*tsan_mop)(void *addr) = 0;
+    if (ev->type == Event::READ) {
+      switch (ev->arg /*size*/) {
+        case 1: tsan_mop = __tsan_read1; break;
+        case 2: tsan_mop = __tsan_read2; break;
+        case 4: tsan_mop = __tsan_read4; break;
+        case 8: tsan_mop = __tsan_read8; break;
+        case 16: tsan_mop = __tsan_read16; break;
+      }
+    } else {
+      switch (ev->arg /*size*/) {
+        case 1: tsan_mop = __tsan_write1; break;
+        case 2: tsan_mop = __tsan_write2; break;
+        case 4: tsan_mop = __tsan_write4; break;
+        case 8: tsan_mop = __tsan_write8; break;
+        case 16: tsan_mop = __tsan_write16; break;
+      }
+    }
+    CHECK_NE(tsan_mop, 0);
+#if defined(__FreeBSD__) || defined(__APPLE__) || defined(__NetBSD__)
+    const int ErrCode = ESOCKTNOSUPPORT;
+#else
+    const int ErrCode = ECHRNG;
+#endif
+    errno = ErrCode;
+    tsan_mop(ev->ptr);
+    CHECK_EQ(ErrCode, errno);  // In no case must errno be changed.
+    break;
+  }
+  case Event::VPTR_UPDATE:
+    __tsan_vptr_update((void**)ev->ptr, (void*)ev->arg);
+    break;
+  case Event::CALL:
+    __tsan_func_entry((void*)((uptr)ev->ptr));
+    break;
+  case Event::RETURN:
+    __tsan_func_exit();
+    break;
+  case Event::MUTEX_CREATE:
+    static_cast<Mutex*>(ev->ptr)->Init();
+    break;
+  case Event::MUTEX_DESTROY:
+    static_cast<Mutex*>(ev->ptr)->Destroy();
+    break;
+  case Event::MUTEX_LOCK:
+    static_cast<Mutex*>(ev->ptr)->Lock();
+    break;
+  case Event::MUTEX_TRYLOCK:
+    ev->res = static_cast<Mutex*>(ev->ptr)->TryLock();
+    break;
+  case Event::MUTEX_UNLOCK:
+    static_cast<Mutex*>(ev->ptr)->Unlock();
+    break;
+  case Event::MUTEX_READLOCK:
+    static_cast<Mutex*>(ev->ptr)->ReadLock();
+    break;
+  case Event::MUTEX_TRYREADLOCK:
+    ev->res = static_cast<Mutex*>(ev->ptr)->TryReadLock();
+    break;
+  case Event::MUTEX_READUNLOCK:
+    static_cast<Mutex*>(ev->ptr)->ReadUnlock();
+    break;
+  case Event::MEMCPY:
+    __interceptor_memcpy(ev->ptr, (void*)ev->arg, ev->arg2);
+    break;
+  case Event::MEMSET:
+    __interceptor_memset(ev->ptr, ev->arg, ev->arg2);
+    break;
+  default: CHECK(0);
+  }
+  if (expect_report && !expect_report_reported) {
+    printf("Missed expected report of type %d\n", (int)ev->report_type);
+    EXPECT_TRUE(false) << "Missed expected race";
+  }
+  expect_report = false;
+}
+
+void *ScopedThread::Impl::ScopedThreadCallback(void *arg) {
+  __tsan_func_entry(__builtin_return_address(0));
+  Impl *impl = (Impl*)arg;
+  for (;;) {
+    Event* ev = (Event*)atomic_load(&impl->event, memory_order_acquire);
+    if (ev == 0) {
+      sched_yield();
+      continue;
+    }
+    if (ev->type == Event::SHUTDOWN) {
+      atomic_store(&impl->event, 0, memory_order_release);
+      break;
+    }
+    impl->HandleEvent(ev);
+    atomic_store(&impl->event, 0, memory_order_release);
+  }
+  __tsan_func_exit();
+  return 0;
+}
+
+void ScopedThread::Impl::send(Event *e) {
+  if (main) {
+    HandleEvent(e);
+  } else {
+    CHECK_EQ(atomic_load(&event, memory_order_relaxed), 0);
+    atomic_store(&event, (uintptr_t)e, memory_order_release);
+    while (atomic_load(&event, memory_order_acquire) != 0)
+      sched_yield();
+  }
+}
+
+ScopedThread::ScopedThread(bool detached, bool main) {
+  impl_ = new Impl;
+  impl_->main = main;
+  impl_->detached = detached;
+  atomic_store(&impl_->event, 0, memory_order_relaxed);
+  if (!main) {
+    pthread_attr_t attr;
+    pthread_attr_init(&attr);
+    pthread_attr_setdetachstate(
+        &attr, detached ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE);
+    pthread_attr_setstacksize(&attr, 64*1024);
+    __interceptor_pthread_create(&impl_->thread, &attr,
+        ScopedThread::Impl::ScopedThreadCallback, impl_);
+  }
+}
+
+ScopedThread::~ScopedThread() {
+  if (!impl_->main) {
+    Event event(Event::SHUTDOWN);
+    impl_->send(&event);
+    if (!impl_->detached)
+      __interceptor_pthread_join(impl_->thread, 0);
+  }
+  delete impl_;
+}
+
+void ScopedThread::Detach() {
+  CHECK(!impl_->main);
+  CHECK(!impl_->detached);
+  impl_->detached = true;
+  __interceptor_pthread_detach(impl_->thread);
+}
+
+void ScopedThread::Access(void *addr, bool is_write,
+                          int size, bool expect_race) {
+  Event event(is_write ? Event::WRITE : Event::READ, addr, size);
+  if (expect_race)
+    event.ExpectReport(ReportTypeRace);
+  impl_->send(&event);
+}
+
+void ScopedThread::VptrUpdate(const MemLoc &vptr,
+                              const MemLoc &new_val,
+                              bool expect_race) {
+  Event event(Event::VPTR_UPDATE, vptr.loc(), (uptr)new_val.loc());
+  if (expect_race)
+    event.ExpectReport(ReportTypeRace);
+  impl_->send(&event);
+}
+
+void ScopedThread::Call(void(*pc)()) {
+  Event event(Event::CALL, (void*)((uintptr_t)pc));
+  impl_->send(&event);
+}
+
+void ScopedThread::Return() {
+  Event event(Event::RETURN);
+  impl_->send(&event);
+}
+
+void ScopedThread::Create(const Mutex &m) {
+  Event event(Event::MUTEX_CREATE, &m);
+  impl_->send(&event);
+}
+
+void ScopedThread::Destroy(const Mutex &m) {
+  Event event(Event::MUTEX_DESTROY, &m);
+  impl_->send(&event);
+}
+
+void ScopedThread::Lock(const Mutex &m) {
+  Event event(Event::MUTEX_LOCK, &m);
+  impl_->send(&event);
+}
+
+bool ScopedThread::TryLock(const Mutex &m) {
+  Event event(Event::MUTEX_TRYLOCK, &m);
+  impl_->send(&event);
+  return event.res;
+}
+
+void ScopedThread::Unlock(const Mutex &m) {
+  Event event(Event::MUTEX_UNLOCK, &m);
+  impl_->send(&event);
+}
+
+void ScopedThread::ReadLock(const Mutex &m) {
+  Event event(Event::MUTEX_READLOCK, &m);
+  impl_->send(&event);
+}
+
+bool ScopedThread::TryReadLock(const Mutex &m) {
+  Event event(Event::MUTEX_TRYREADLOCK, &m);
+  impl_->send(&event);
+  return event.res;
+}
+
+void ScopedThread::ReadUnlock(const Mutex &m) {
+  Event event(Event::MUTEX_READUNLOCK, &m);
+  impl_->send(&event);
+}
+
+void ScopedThread::Memcpy(void *dst, const void *src, int size,
+                          bool expect_race) {
+  Event event(Event::MEMCPY, dst, (uptr)src, size);
+  if (expect_race)
+    event.ExpectReport(ReportTypeRace);
+  impl_->send(&event);
+}
+
+void ScopedThread::Memset(void *dst, int val, int size,
+                          bool expect_race) {
+  Event event(Event::MEMSET, dst, val, size);
+  if (expect_race)
+    event.ExpectReport(ReportTypeRace);
+  impl_->send(&event);
+}

external/llvm-project/compiler-rt/lib/tsan/tests/rtl/tsan_thread.cc

@@ -0,0 +1,59 @@
+//===-- tsan_thread.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_test_util.h"
+#include "gtest/gtest.h"
+
+TEST(ThreadSanitizer, ThreadSync) {
+  MainThread t0;
+  MemLoc l;
+  t0.Write1(l);
+  {
+    ScopedThread t1;
+    t1.Write1(l);
+  }
+  t0.Write1(l);
+}
+
+TEST(ThreadSanitizer, ThreadDetach1) {
+  ScopedThread t1(true);
+  MemLoc l;
+  t1.Write1(l);
+}
+
+TEST(ThreadSanitizer, ThreadDetach2) {
+  ScopedThread t1;
+  MemLoc l;
+  t1.Write1(l);
+  t1.Detach();
+}
+
+static void *thread_alot_func(void *arg) {
+  (void)arg;
+  int usleep(unsigned);
+  usleep(50);
+  return 0;
+}
+
+TEST(DISABLED_SLOW_ThreadSanitizer, ThreadALot) {
+  const int kThreads = 70000;
+  const int kAlive = 1000;
+  pthread_t threads[kAlive] = {};
+  for (int i = 0; i < kThreads; i++) {
+    if (threads[i % kAlive])
+      pthread_join(threads[i % kAlive], 0);
+    pthread_create(&threads[i % kAlive], 0, thread_alot_func, 0);
+  }
+  for (int i = 0; i < kAlive; i++) {
+    pthread_join(threads[i], 0);
+  }
+}