Merge base unit tests into src to be in line with Chrome.

test/base-unittests/platform/semaphore-unittest.cc

-// Copyright 2014 the V8 project 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 <cstring>
-
-#include "src/base/platform/platform.h"
-#include "src/base/platform/semaphore.h"
-#include "src/base/platform/time.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace v8 {
-namespace base {
-
-namespace {
-
-static const char kAlphabet[] = "XKOAD";
-static const size_t kAlphabetSize = sizeof(kAlphabet) - 1;
-static const size_t kBufferSize = 987;  // GCD(buffer size, alphabet size) = 1
-static const size_t kDataSize = kBufferSize * kAlphabetSize * 10;
-
-
-class ProducerThread V8_FINAL : public Thread {
- public:
-  ProducerThread(char* buffer, Semaphore* free_space, Semaphore* used_space)
-      : Thread(Options("ProducerThread")),
-        buffer_(buffer),
-        free_space_(free_space),
-        used_space_(used_space) {}
-  virtual ~ProducerThread() {}
-
-  virtual void Run() V8_OVERRIDE {
-    for (size_t n = 0; n < kDataSize; ++n) {
-      free_space_->Wait();
-      buffer_[n % kBufferSize] = kAlphabet[n % kAlphabetSize];
-      used_space_->Signal();
-    }
-  }
-
- private:
-  char* buffer_;
-  Semaphore* const free_space_;
-  Semaphore* const used_space_;
-};
-
-
-class ConsumerThread V8_FINAL : public Thread {
- public:
-  ConsumerThread(const char* buffer, Semaphore* free_space,
-                 Semaphore* used_space)
-      : Thread(Options("ConsumerThread")),
-        buffer_(buffer),
-        free_space_(free_space),
-        used_space_(used_space) {}
-  virtual ~ConsumerThread() {}
-
-  virtual void Run() V8_OVERRIDE {
-    for (size_t n = 0; n < kDataSize; ++n) {
-      used_space_->Wait();
-      EXPECT_EQ(kAlphabet[n % kAlphabetSize], buffer_[n % kBufferSize]);
-      free_space_->Signal();
-    }
-  }
-
- private:
-  const char* buffer_;
-  Semaphore* const free_space_;
-  Semaphore* const used_space_;
-};
-
-
-class WaitAndSignalThread V8_FINAL : public Thread {
- public:
-  explicit WaitAndSignalThread(Semaphore* semaphore)
-      : Thread(Options("WaitAndSignalThread")), semaphore_(semaphore) {}
-  virtual ~WaitAndSignalThread() {}
-
-  virtual void Run() V8_OVERRIDE {
-    for (int n = 0; n < 100; ++n) {
-      semaphore_->Wait();
-      ASSERT_FALSE(semaphore_->WaitFor(TimeDelta::FromMicroseconds(1)));
-      semaphore_->Signal();
-    }
-  }
-
- private:
-  Semaphore* const semaphore_;
-};
-
-}  // namespace
-
-
-TEST(Semaphore, ProducerConsumer) {
-  char buffer[kBufferSize];
-  std::memset(buffer, 0, sizeof(buffer));
-  Semaphore free_space(kBufferSize);
-  Semaphore used_space(0);
-  ProducerThread producer_thread(buffer, &free_space, &used_space);
-  ConsumerThread consumer_thread(buffer, &free_space, &used_space);
-  producer_thread.Start();
-  consumer_thread.Start();
-  producer_thread.Join();
-  consumer_thread.Join();
-}
-
-
-TEST(Semaphore, WaitAndSignal) {
-  Semaphore semaphore(0);
-  WaitAndSignalThread t1(&semaphore);
-  WaitAndSignalThread t2(&semaphore);
-
-  t1.Start();
-  t2.Start();
-
-  // Make something available.
-  semaphore.Signal();
-
-  t1.Join();
-  t2.Join();
-
-  semaphore.Wait();
-
-  EXPECT_FALSE(semaphore.WaitFor(TimeDelta::FromMicroseconds(1)));
-}
-
-
-TEST(Semaphore, WaitFor) {
-  Semaphore semaphore(0);
-
-  // Semaphore not signalled - timeout.
-  ASSERT_FALSE(semaphore.WaitFor(TimeDelta::FromMicroseconds(0)));
-  ASSERT_FALSE(semaphore.WaitFor(TimeDelta::FromMicroseconds(100)));
-  ASSERT_FALSE(semaphore.WaitFor(TimeDelta::FromMicroseconds(1000)));
-
-  // Semaphore signalled - no timeout.
-  semaphore.Signal();
-  ASSERT_TRUE(semaphore.WaitFor(TimeDelta::FromMicroseconds(0)));
-  semaphore.Signal();
-  ASSERT_TRUE(semaphore.WaitFor(TimeDelta::FromMicroseconds(100)));
-  semaphore.Signal();
-  ASSERT_TRUE(semaphore.WaitFor(TimeDelta::FromMicroseconds(1000)));
-}
-
-}  // namespace base
-}  // namespace v8