Cleanup Semaphore class.

src/platform-solaris.cc

Index: src/platform-solaris.cc
diff --git a/src/platform-solaris.cc b/src/platform-solaris.cc
index dd5c7a0d8483aac5e9ab5c78d7e180a2146e27b5..99636d6430267336c0919e77c86fdf3243610e58 100644
--- a/src/platform-solaris.cc
+++ b/src/platform-solaris.cc
@@ -393,84 +393,6 @@ bool VirtualMemory::HasLazyCommits() {
 }
 
 
-class SolarisSemaphore : public Semaphore {
- public:
-  explicit SolarisSemaphore(int count) {  sem_init(&sem_, 0, count); }
-  virtual ~SolarisSemaphore() { sem_destroy(&sem_); }
-
-  virtual void Wait();
-  virtual bool Wait(int timeout);
-  virtual void Signal() { sem_post(&sem_); }
- private:
-  sem_t sem_;
-};
-
-
-void SolarisSemaphore::Wait() {
-  while (true) {
-    int result = sem_wait(&sem_);
-    if (result == 0) return;  // Successfully got semaphore.
-    CHECK(result == -1 && errno == EINTR);  // Signal caused spurious wakeup.
-  }
-}
-
-
-#ifndef TIMEVAL_TO_TIMESPEC
-#define TIMEVAL_TO_TIMESPEC(tv, ts) do {                            \
-    (ts)->tv_sec = (tv)->tv_sec;                                    \
-    (ts)->tv_nsec = (tv)->tv_usec * 1000;                           \
-} while (false)
-#endif
-
-
-#ifndef timeradd
-#define timeradd(a, b, result) \
-  do { \
-    (result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \
-    (result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \
-    if ((result)->tv_usec >= 1000000) { \
-      ++(result)->tv_sec; \
-      (result)->tv_usec -= 1000000; \
-    } \
-  } while (0)
-#endif
-
-
-bool SolarisSemaphore::Wait(int timeout) {
-  const long kOneSecondMicros = 1000000;  // NOLINT
-
-  // Split timeout into second and nanosecond parts.
-  struct timeval delta;
-  delta.tv_usec = timeout % kOneSecondMicros;
-  delta.tv_sec = timeout / kOneSecondMicros;
-
-  struct timeval current_time;
-  // Get the current time.
-  if (gettimeofday(&current_time, NULL) == -1) {
-    return false;
-  }
-
-  // Calculate time for end of timeout.
-  struct timeval end_time;
-  timeradd(&current_time, &delta, &end_time);
-
-  struct timespec ts;
-  TIMEVAL_TO_TIMESPEC(&end_time, &ts);
-  // Wait for semaphore signalled or timeout.
-  while (true) {
-    int result = sem_timedwait(&sem_, &ts);
-    if (result == 0) return true;  // Successfully got semaphore.
-    if (result == -1 && errno == ETIMEDOUT) return false;  // Timeout.
-    CHECK(result == -1 && errno == EINTR);  // Signal caused spurious wakeup.
-  }
-}
-
-
-Semaphore* OS::CreateSemaphore(int count) {
-  return new SolarisSemaphore(count);
-}
-
-
 void OS::SetUp() {
   // Seed the random number generator.
   // Convert the current time to a 64-bit integer first, before converting it