Revert of Update mojo sdk to rev c02a28868825edfa57ab77947b8cb15e741c5598

third_party/mojo/src/mojo/edk/system/mutex_unittest.cc

Index: third_party/mojo/src/mojo/edk/system/mutex_unittest.cc
diff --git a/third_party/mojo/src/mojo/edk/system/mutex_unittest.cc b/third_party/mojo/src/mojo/edk/system/mutex_unittest.cc
deleted file mode 100644
index 9b516536560174e4a399a0f473a6393b050fb946..0000000000000000000000000000000000000000
--- a/third_party/mojo/src/mojo/edk/system/mutex_unittest.cc
+++ /dev/null
@@ -1,250 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "mojo/edk/system/mutex.h"
-
-#include <stdlib.h>
-
-#include "base/threading/platform_thread.h"
-#include "mojo/edk/system/test_utils.h"
-#include "mojo/public/cpp/system/macros.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace mojo {
-namespace system {
-namespace {
-
-// Sleeps for a "very small" amount of time.
-void EpsilonRandomSleep() {
-  test::Sleep(test::DeadlineFromMilliseconds(rand() % 20));
-}
-
-// Basic test to make sure that Lock()/Unlock()/TryLock() don't crash ----------
-
-class BasicMutexTestThread : public base::PlatformThread::Delegate {
- public:
-  explicit BasicMutexTestThread(Mutex* mutex) : mutex_(mutex), acquired_(0) {}
-
-  void ThreadMain() override {
-    for (int i = 0; i < 10; i++) {
-      mutex_->Lock();
-      mutex_->AssertHeld();
-      acquired_++;
-      mutex_->Unlock();
-    }
-    for (int i = 0; i < 10; i++) {
-      mutex_->Lock();
-      mutex_->AssertHeld();
-      acquired_++;
-      EpsilonRandomSleep();
-      mutex_->Unlock();
-    }
-    for (int i = 0; i < 10; i++) {
-      if (mutex_->TryLock()) {
-        mutex_->AssertHeld();
-        acquired_++;
-        EpsilonRandomSleep();
-        mutex_->Unlock();
-      }
-    }
-  }
-
-  int acquired() const { return acquired_; }
-
- private:
-  Mutex* mutex_;
-  int acquired_;
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(BasicMutexTestThread);
-};
-
-TEST(MutexTest, Basic) {
-  Mutex mutex;
-  BasicMutexTestThread thread(&mutex);
-  base::PlatformThreadHandle handle;
-
-  ASSERT_TRUE(base::PlatformThread::Create(0, &thread, &handle));
-
-  int acquired = 0;
-  for (int i = 0; i < 5; i++) {
-    mutex.Lock();
-    mutex.AssertHeld();
-    acquired++;
-    mutex.Unlock();
-  }
-  for (int i = 0; i < 10; i++) {
-    mutex.Lock();
-    mutex.AssertHeld();
-    acquired++;
-    EpsilonRandomSleep();
-    mutex.Unlock();
-  }
-  for (int i = 0; i < 10; i++) {
-    if (mutex.TryLock()) {
-      mutex.AssertHeld();
-      acquired++;
-      EpsilonRandomSleep();
-      mutex.Unlock();
-    }
-  }
-  for (int i = 0; i < 5; i++) {
-    mutex.Lock();
-    mutex.AssertHeld();
-    acquired++;
-    EpsilonRandomSleep();
-    mutex.Unlock();
-  }
-
-  base::PlatformThread::Join(handle);
-
-  EXPECT_GE(acquired, 20);
-  EXPECT_GE(thread.acquired(), 20);
-}
-
-// Test that TryLock() works as expected ---------------------------------------
-
-class TryLockTestThread : public base::PlatformThread::Delegate {
- public:
-  explicit TryLockTestThread(Mutex* mutex) : mutex_(mutex), got_lock_(false) {}
-
-  void ThreadMain() override MOJO_NO_THREAD_SAFETY_ANALYSIS {
-    got_lock_ = mutex_->TryLock();
-    if (got_lock_) {
-      mutex_->AssertHeld();
-      mutex_->Unlock();
-    }
-  }
-
-  bool got_lock() const { return got_lock_; }
-
- private:
-  Mutex* mutex_;
-  bool got_lock_;
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(TryLockTestThread);
-};
-
-TEST(MutexTest, TryLock) MOJO_NO_THREAD_SAFETY_ANALYSIS {
-  Mutex mutex;
-
-  ASSERT_TRUE(mutex.TryLock());
-  // We now have the mutex....
-
-  // This thread will not be able to get the mutex.
-  {
-    TryLockTestThread thread(&mutex);
-    base::PlatformThreadHandle handle;
-
-    ASSERT_TRUE(base::PlatformThread::Create(0, &thread, &handle));
-
-    base::PlatformThread::Join(handle);
-
-    ASSERT_FALSE(thread.got_lock());
-  }
-
-  mutex.Unlock();
-
-  // This thread will....
-  {
-    TryLockTestThread thread(&mutex);
-    base::PlatformThreadHandle handle;
-
-    ASSERT_TRUE(base::PlatformThread::Create(0, &thread, &handle));
-
-    base::PlatformThread::Join(handle);
-
-    ASSERT_TRUE(thread.got_lock());
-    // But it released it....
-    ASSERT_TRUE(mutex.TryLock());
-  }
-
-  mutex.Unlock();
-}
-
-// Tests that mutexes actually exclude -----------------------------------------
-
-class MutexLockTestThread : public base::PlatformThread::Delegate {
- public:
-  MutexLockTestThread(Mutex* mutex, int* value)
-      : mutex_(mutex), value_(value) {}
-
-  // Static helper which can also be called from the main thread.
-  static void DoStuff(Mutex* mutex, int* value) {
-    for (int i = 0; i < 40; i++) {
-      mutex->Lock();
-      int v = *value;
-      EpsilonRandomSleep();
-      *value = v + 1;
-      mutex->Unlock();
-    }
-  }
-
-  void ThreadMain() override { DoStuff(mutex_, value_); }
-
- private:
-  Mutex* mutex_;
-  int* value_;
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(MutexLockTestThread);
-};
-
-TEST(MutexTest, MutexTwoThreads) {
-  Mutex mutex;
-  int value = 0;
-
-  MutexLockTestThread thread(&mutex, &value);
-  base::PlatformThreadHandle handle;
-
-  ASSERT_TRUE(base::PlatformThread::Create(0, &thread, &handle));
-
-  MutexLockTestThread::DoStuff(&mutex, &value);
-
-  base::PlatformThread::Join(handle);
-
-  EXPECT_EQ(2 * 40, value);
-}
-
-TEST(MutexTest, MutexFourThreads) {
-  Mutex mutex;
-  int value = 0;
-
-  MutexLockTestThread thread1(&mutex, &value);
-  MutexLockTestThread thread2(&mutex, &value);
-  MutexLockTestThread thread3(&mutex, &value);
-  base::PlatformThreadHandle handle1;
-  base::PlatformThreadHandle handle2;
-  base::PlatformThreadHandle handle3;
-
-  ASSERT_TRUE(base::PlatformThread::Create(0, &thread1, &handle1));
-  ASSERT_TRUE(base::PlatformThread::Create(0, &thread2, &handle2));
-  ASSERT_TRUE(base::PlatformThread::Create(0, &thread3, &handle3));
-
-  MutexLockTestThread::DoStuff(&mutex, &value);
-
-  base::PlatformThread::Join(handle1);
-  base::PlatformThread::Join(handle2);
-  base::PlatformThread::Join(handle3);
-
-  EXPECT_EQ(4 * 40, value);
-}
-
-// MutexLocker -----------------------------------------------------------------
-
-TEST(MutexTest, MutexLocker) {
-  Mutex mutex;
-
-  {
-    MutexLocker locker(&mutex);
-    mutex.AssertHeld();
-  }
-
-  // The destruction of |locker| should unlock |mutex|.
-  ASSERT_TRUE(mutex.TryLock());
-  mutex.AssertHeld();
-  mutex.Unlock();
-}
-
-}  // namespace
-}  // namespace system
-}  // namespace mojo