VM: Re-format to use at most one newline between functions

runtime/bin/thread_win.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 #if defined(HOST_OS_WINDOWS)
 
 #include "bin/thread.h"
 #include "bin/thread_win.h"
 
@@ skipping 12 matching lines @@
   Thread::ThreadStartFunction function() const { return function_; }
   uword parameter() const { return parameter_; }
 
  private:
   Thread::ThreadStartFunction function_;
   uword parameter_;
 
   DISALLOW_COPY_AND_ASSIGN(ThreadStartData);
 };
 
-
 // Dispatch to the thread start function provided by the caller. This trampoline
 // is used to ensure that the thread is properly destroyed if the thread just
 // exits.
 static unsigned int __stdcall ThreadEntry(void* data_ptr) {
   ThreadStartData* data = reinterpret_cast<ThreadStartData*>(data_ptr);
 
   Thread::ThreadStartFunction function = data->function();
   uword parameter = data->parameter();
   delete data;
 
   MonitorData::GetMonitorWaitDataForThread();
 
   // Call the supplied thread start function handing it its parameters.
   function(parameter);
 
   // Clean up the monitor wait data for this thread.
   MonitorWaitData::ThreadExit();
 
   return 0;
 }
 
-
 int Thread::Start(ThreadStartFunction function, uword parameter) {
   ThreadStartData* start_data = new ThreadStartData(function, parameter);
   uint32_t tid;
   uintptr_t thread = _beginthreadex(NULL, Thread::GetMaxStackSize(),
                                     ThreadEntry, start_data, 0, &tid);
   if ((thread == -1L) || (thread == 0)) {
 #ifdef DEBUG
     fprintf(stderr, "_beginthreadex error: %d (%s)\n", errno, strerror(errno));
 #endif
     return errno;
   }
 
   // Close the handle, so we don't leak the thread object.
   CloseHandle(reinterpret_cast<HANDLE>(thread));
 
   return 0;
 }
 
 const ThreadLocalKey Thread::kUnsetThreadLocalKey = TLS_OUT_OF_INDEXES;
 const ThreadId Thread::kInvalidThreadId = 0;
 
 ThreadLocalKey Thread::CreateThreadLocal() {
   ThreadLocalKey key = TlsAlloc();
   if (key == kUnsetThreadLocalKey) {
     FATAL1("TlsAlloc failed %d", GetLastError());
   }
   return key;
 }
 
-
 void Thread::DeleteThreadLocal(ThreadLocalKey key) {
   ASSERT(key != kUnsetThreadLocalKey);
   BOOL result = TlsFree(key);
   if (!result) {
     FATAL1("TlsFree failed %d", GetLastError());
   }
 }
 
-
 intptr_t Thread::GetMaxStackSize() {
   const int kStackSize = (128 * kWordSize * KB);
   return kStackSize;
 }
 
-
 ThreadId Thread::GetCurrentThreadId() {
   return ::GetCurrentThreadId();
 }
 
-
 intptr_t Thread::ThreadIdToIntPtr(ThreadId id) {
   ASSERT(sizeof(id) <= sizeof(intptr_t));
   return static_cast<intptr_t>(id);
 }
 
-
 bool Thread::Compare(ThreadId a, ThreadId b) {
   return (a == b);
 }
 
-
 void Thread::SetThreadLocal(ThreadLocalKey key, uword value) {
   ASSERT(key != kUnsetThreadLocalKey);
   BOOL result = TlsSetValue(key, reinterpret_cast<void*>(value));
   if (!result) {
     FATAL1("TlsSetValue failed %d", GetLastError());
   }
 }
 
-
 void Thread::InitOnce() {
   MonitorWaitData::monitor_wait_data_key_ = Thread::CreateThreadLocal();
   MonitorData::GetMonitorWaitDataForThread();
 }
 
-
 Mutex::Mutex() {
   // Allocate unnamed semaphore with initial count 1 and max count 1.
   data_.semaphore_ = CreateSemaphore(NULL, 1, 1, NULL);
   if (data_.semaphore_ == NULL) {
     FATAL1("Mutex allocation failed %d", GetLastError());
   }
 }
 
-
 Mutex::~Mutex() {
   CloseHandle(data_.semaphore_);
 }
 
-
 void Mutex::Lock() {
   DWORD result = WaitForSingleObject(data_.semaphore_, INFINITE);
   if (result != WAIT_OBJECT_0) {
     FATAL1("Mutex lock failed %d", GetLastError());
   }
 }
 
-
 bool Mutex::TryLock() {
   // Attempt to pass the semaphore but return immediately.
   DWORD result = WaitForSingleObject(data_.semaphore_, 0);
   if (result == WAIT_OBJECT_0) {
     return true;
   }
   if ((result == WAIT_ABANDONED) || (result == WAIT_FAILED)) {
     FATAL1("Mutex try lock failed %d", GetLastError());
   }
   ASSERT(result == WAIT_TIMEOUT);
   return false;
 }
 
-
 void Mutex::Unlock() {
   BOOL result = ReleaseSemaphore(data_.semaphore_, 1, NULL);
   if (result == 0) {
     FATAL1("Mutex unlock failed %d", GetLastError());
   }
 }
 
-
 ThreadLocalKey MonitorWaitData::monitor_wait_data_key_ =
     Thread::kUnsetThreadLocalKey;
 
-
 Monitor::Monitor() {
   InitializeCriticalSection(&data_.cs_);
   InitializeCriticalSection(&data_.waiters_cs_);
   data_.waiters_head_ = NULL;
   data_.waiters_tail_ = NULL;
 }
 
-
 Monitor::~Monitor() {
   DeleteCriticalSection(&data_.cs_);
   DeleteCriticalSection(&data_.waiters_cs_);
 }
 
-
 void Monitor::Enter() {
   EnterCriticalSection(&data_.cs_);
 }
 
-
 void Monitor::Exit() {
   LeaveCriticalSection(&data_.cs_);
 }
 
-
 void MonitorWaitData::ThreadExit() {
   if (MonitorWaitData::monitor_wait_data_key_ != Thread::kUnsetThreadLocalKey) {
     uword raw_wait_data =
         Thread::GetThreadLocal(MonitorWaitData::monitor_wait_data_key_);
     if (raw_wait_data != 0) {
       MonitorWaitData* wait_data =
           reinterpret_cast<MonitorWaitData*>(raw_wait_data);
       delete wait_data;
     }
   }
 }
 
-
 void MonitorData::AddWaiter(MonitorWaitData* wait_data) {
   // Add the MonitorWaitData object to the list of objects waiting for
   // this monitor.
   EnterCriticalSection(&waiters_cs_);
   if (waiters_tail_ == NULL) {
     ASSERT(waiters_head_ == NULL);
     waiters_head_ = wait_data;
     waiters_tail_ = wait_data;
   } else {
     waiters_tail_->next_ = wait_data;
     waiters_tail_ = wait_data;
   }
   LeaveCriticalSection(&waiters_cs_);
 }
 
-
 void MonitorData::RemoveWaiter(MonitorWaitData* wait_data) {
   // Remove the MonitorWaitData object from the list of objects
   // waiting for this monitor.
   EnterCriticalSection(&waiters_cs_);
   MonitorWaitData* previous = NULL;
   MonitorWaitData* current = waiters_head_;
   while (current != NULL) {
     if (current == wait_data) {
       if (waiters_head_ == waiters_tail_) {
         waiters_head_ = NULL;
@@ skipping 11 matching lines @@
       // Clear next.
       wait_data->next_ = NULL;
       break;
     }
     previous = current;
     current = current->next_;
   }
   LeaveCriticalSection(&waiters_cs_);
 }
 
-
 void MonitorData::SignalAndRemoveFirstWaiter() {
   EnterCriticalSection(&waiters_cs_);
   MonitorWaitData* first = waiters_head_;
   if (first != NULL) {
     // Remove from list.
     if (waiters_head_ == waiters_tail_) {
       waiters_tail_ = NULL;
       waiters_head_ = NULL;
     } else {
       waiters_head_ = waiters_head_->next_;
     }
     // Clear next.
     first->next_ = NULL;
     // Signal event.
     BOOL result = SetEvent(first->event_);
     if (result == 0) {
       FATAL1("Monitor::Notify failed to signal event %d", GetLastError());
     }
   }
   LeaveCriticalSection(&waiters_cs_);
 }
 
-
 void MonitorData::SignalAndRemoveAllWaiters() {
   EnterCriticalSection(&waiters_cs_);
   // Extract list to signal.
   MonitorWaitData* current = waiters_head_;
   // Clear list.
   waiters_head_ = NULL;
   waiters_tail_ = NULL;
   // Iterate and signal all events.
   while (current != NULL) {
     // Copy next.
     MonitorWaitData* next = current->next_;
     // Clear next.
     current->next_ = NULL;
     // Signal event.
     BOOL result = SetEvent(current->event_);
     if (result == 0) {
       FATAL1("Failed to set event for NotifyAll %d", GetLastError());
     }
     current = next;
   }
   LeaveCriticalSection(&waiters_cs_);
 }
 
-
 MonitorWaitData* MonitorData::GetMonitorWaitDataForThread() {
   // Ensure that the thread local key for monitor wait data objects is
   // initialized.
   ASSERT(MonitorWaitData::monitor_wait_data_key_ !=
          Thread::kUnsetThreadLocalKey);
 
   // Get the MonitorWaitData object containing the event for this
   // thread from thread local storage. Create it if it does not exist.
   uword raw_wait_data =
       Thread::GetThreadLocal(MonitorWaitData::monitor_wait_data_key_);
   MonitorWaitData* wait_data = NULL;
   if (raw_wait_data == 0) {
     HANDLE event = CreateEvent(NULL, FALSE, FALSE, NULL);
     wait_data = new MonitorWaitData(event);
     Thread::SetThreadLocal(MonitorWaitData::monitor_wait_data_key_,
                            reinterpret_cast<uword>(wait_data));
   } else {
     wait_data = reinterpret_cast<MonitorWaitData*>(raw_wait_data);
     wait_data->next_ = NULL;
   }
   return wait_data;
 }
 
-
 Monitor::WaitResult Monitor::Wait(int64_t millis) {
   Monitor::WaitResult retval = kNotified;
 
   // Get the wait data object containing the event to wait for.
   MonitorWaitData* wait_data = MonitorData::GetMonitorWaitDataForThread();
 
   // Start waiting by adding the MonitorWaitData to the list of
   // waiters.
   data_.AddWaiter(wait_data);
 
@@ skipping 21 matching lines @@
       retval = kTimedOut;
     }
   }
 
   // Reacquire the monitor critical section before continuing.
   EnterCriticalSection(&data_.cs_);
 
   return retval;
 }
 
-
 Monitor::WaitResult Monitor::WaitMicros(int64_t micros) {
   // TODO(johnmccutchan): Investigate sub-millisecond sleep times on Windows.
   int64_t millis = micros / kMicrosecondsPerMillisecond;
   if ((millis * kMicrosecondsPerMillisecond) < micros) {
     // We've been asked to sleep for a fraction of a millisecond,
     // this isn't supported on Windows. Bumps milliseconds up by one
     // so that we never return too early. We likely return late though.
     millis += 1;
   }
   return Wait(millis);
 }
 
-
 void Monitor::Notify() {
   data_.SignalAndRemoveFirstWaiter();
 }
 
-
 void Monitor::NotifyAll() {
   // If one of the objects in the list of waiters wakes because of a
   // timeout before we signal it, that object will get an extra
   // signal. This will be treated as a spurious wake-up and is OK
   // since all uses of monitors should recheck the condition after a
   // Wait.
   data_.SignalAndRemoveAllWaiters();
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(HOST_OS_WINDOWS)