Index: compiler-rt/trunk/lib/tsan/tests/rtl/CMakeLists.txt
===================================================================
--- compiler-rt/trunk/lib/tsan/tests/rtl/CMakeLists.txt
+++ compiler-rt/trunk/lib/tsan/tests/rtl/CMakeLists.txt
@@ -8,7 +8,7 @@
   tsan_thread.cc)
 
 if(UNIX)
-  list(APPEND TSAN_RTL_TEST_SOURCES tsan_test_util_linux.cc)
+  list(APPEND TSAN_RTL_TEST_SOURCES tsan_test_util_posix.cc)
 endif()
 
 set(TSAN_RTL_TEST_HEADERS
Index: compiler-rt/trunk/lib/tsan/tests/rtl/tsan_test_util_linux.cc
===================================================================
--- compiler-rt/trunk/lib/tsan/tests/rtl/tsan_test_util_linux.cc
+++ compiler-rt/trunk/lib/tsan/tests/rtl/tsan_test_util_linux.cc
@@ -1,491 +0,0 @@
-//===-- tsan_test_util_linux.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 and Darwin implementation.
-//===----------------------------------------------------------------------===//
-
-#include "sanitizer_common/sanitizer_atomic.h"
-#include "tsan_interface.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;
-
-#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
-#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);
-
-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;
-  pthread_mutex_lock(&mtx);
-  pthread_mutex_unlock(&mtx);
-  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_FALSE("Wrong report type");
-      return false;
-    }
-  } else {
-    EXPECT_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(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(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(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(pthread_rwlock_destroy((pthread_rwlock_t*)mtx_), 0);
-}
-
-void Mutex::Lock() {
-  CHECK(alive_);
-  if (type_ == Normal)
-    CHECK_EQ(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(pthread_rwlock_wrlock((pthread_rwlock_t*)mtx_), 0);
-}
-
-bool Mutex::TryLock() {
-  CHECK(alive_);
-  if (type_ == Normal)
-    return 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 pthread_rwlock_trywrlock((pthread_rwlock_t*)mtx_) == 0;
-  return false;
-}
-
-void Mutex::Unlock() {
-  CHECK(alive_);
-  if (type_ == Normal)
-    CHECK_EQ(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(pthread_rwlock_unlock((pthread_rwlock_t*)mtx_), 0);
-}
-
-void Mutex::ReadLock() {
-  CHECK(alive_);
-  CHECK(type_ == RW);
-  CHECK_EQ(pthread_rwlock_rdlock((pthread_rwlock_t*)mtx_), 0);
-}
-
-bool Mutex::TryReadLock() {
-  CHECK(alive_);
-  CHECK(type_ == RW);
-  return pthread_rwlock_tryrdlock((pthread_rwlock_t*)mtx_) ==  0;
-}
-
-void Mutex::ReadUnlock() {
-  CHECK(alive_);
-  CHECK(type_ == RW);
-  CHECK_EQ(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__)
-    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_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_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;
-  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);
-}
Index: compiler-rt/trunk/lib/tsan/tests/rtl/tsan_test_util_posix.cc
===================================================================
--- compiler-rt/trunk/lib/tsan/tests/rtl/tsan_test_util_posix.cc
+++ compiler-rt/trunk/lib/tsan/tests/rtl/tsan_test_util_posix.cc
@@ -0,0 +1,491 @@
+//===-- 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 and Darwin implementation.
+//===----------------------------------------------------------------------===//
+
+#include "sanitizer_common/sanitizer_atomic.h"
+#include "tsan_interface.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;
+
+#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
+#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);
+
+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;
+  pthread_mutex_lock(&mtx);
+  pthread_mutex_unlock(&mtx);
+  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_FALSE("Wrong report type");
+      return false;
+    }
+  } else {
+    EXPECT_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(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(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(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(pthread_rwlock_destroy((pthread_rwlock_t*)mtx_), 0);
+}
+
+void Mutex::Lock() {
+  CHECK(alive_);
+  if (type_ == Normal)
+    CHECK_EQ(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(pthread_rwlock_wrlock((pthread_rwlock_t*)mtx_), 0);
+}
+
+bool Mutex::TryLock() {
+  CHECK(alive_);
+  if (type_ == Normal)
+    return 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 pthread_rwlock_trywrlock((pthread_rwlock_t*)mtx_) == 0;
+  return false;
+}
+
+void Mutex::Unlock() {
+  CHECK(alive_);
+  if (type_ == Normal)
+    CHECK_EQ(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(pthread_rwlock_unlock((pthread_rwlock_t*)mtx_), 0);
+}
+
+void Mutex::ReadLock() {
+  CHECK(alive_);
+  CHECK(type_ == RW);
+  CHECK_EQ(pthread_rwlock_rdlock((pthread_rwlock_t*)mtx_), 0);
+}
+
+bool Mutex::TryReadLock() {
+  CHECK(alive_);
+  CHECK(type_ == RW);
+  return pthread_rwlock_tryrdlock((pthread_rwlock_t*)mtx_) ==  0;
+}
+
+void Mutex::ReadUnlock() {
+  CHECK(alive_);
+  CHECK(type_ == RW);
+  CHECK_EQ(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__)
+    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_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_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;
+  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);
+}