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

runtime/vm/os_thread_linux.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"  // NOLINT
 
 #if defined(HOST_OS_LINUX)
 
 #include "vm/os_thread.h"
 
@@ skipping 12 matching lines @@
 
 #define VALIDATE_PTHREAD_RESULT(result)                                        \
   if (result != 0) {                                                           \
     const int kBufferSize = 1024;                                              \
     char error_buf[kBufferSize];                                               \
     NOT_IN_PRODUCT(Profiler::DumpStackTrace());                                \
     FATAL2("pthread error: %d (%s)", result,                                   \
            Utils::StrError(result, error_buf, kBufferSize));                   \
   }
 
-
 #if defined(DEBUG)
 #define ASSERT_PTHREAD_SUCCESS(result) VALIDATE_PTHREAD_RESULT(result)
 #else
 // NOTE: This (currently) expands to a no-op.
 #define ASSERT_PTHREAD_SUCCESS(result) ASSERT(result == 0)
 #endif
 
-
 #ifdef DEBUG
 #define RETURN_ON_PTHREAD_FAILURE(result)                                      \
   if (result != 0) {                                                           \
     const int kBufferSize = 1024;                                              \
     char error_buf[kBufferSize];                                               \
     fprintf(stderr, "%s:%d: pthread error: %d (%s)\n", __FILE__, __LINE__,     \
             result, Utils::StrError(result, error_buf, kBufferSize));          \
     return result;                                                             \
   }
 #else
 #define RETURN_ON_PTHREAD_FAILURE(result)                                      \
   if (result != 0) return result;
 #endif
 
-
 static void ComputeTimeSpecMicros(struct timespec* ts, int64_t micros) {
   int64_t secs = micros / kMicrosecondsPerSecond;
   int64_t nanos =
       (micros - (secs * kMicrosecondsPerSecond)) * kNanosecondsPerMicrosecond;
   int result = clock_gettime(CLOCK_MONOTONIC, ts);
   ASSERT(result == 0);
   ts->tv_sec += secs;
   ts->tv_nsec += nanos;
   if (ts->tv_nsec >= kNanosecondsPerSecond) {
     ts->tv_sec += 1;
     ts->tv_nsec -= kNanosecondsPerSecond;
   }
 }
 
-
 class ThreadStartData {
  public:
   ThreadStartData(const char* name,
                   OSThread::ThreadStartFunction function,
                   uword parameter)
       : name_(name), function_(function), parameter_(parameter) {}
 
   const char* name() const { return name_; }
   OSThread::ThreadStartFunction function() const { return function_; }
   uword parameter() const { return parameter_; }
 
  private:
   const char* name_;
   OSThread::ThreadStartFunction function_;
   uword parameter_;
 
   DISALLOW_COPY_AND_ASSIGN(ThreadStartData);
 };
 
-
 // Spawned threads inherit their spawner's signal mask. We sometimes spawn
 // threads for running Dart code from a thread that is blocking SIGPROF.
 // This function explicitly unblocks SIGPROF so the profiler continues to
 // sample this thread.
 static void UnblockSIGPROF() {
   sigset_t set;
   sigemptyset(&set);
   sigaddset(&set, SIGPROF);
   int r = pthread_sigmask(SIG_UNBLOCK, &set, NULL);
   USE(r);
   ASSERT(r == 0);
   ASSERT(!CHECK_IS_BLOCKING(SIGPROF));
 }
 
-
 // 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 void* ThreadStart(void* data_ptr) {
   ThreadStartData* data = reinterpret_cast<ThreadStartData*>(data_ptr);
 
   const char* name = data->name();
   OSThread::ThreadStartFunction function = data->function();
   uword parameter = data->parameter();
   delete data;
 
   // Create new OSThread object and set as TLS for new thread.
   OSThread* thread = OSThread::CreateOSThread();
   if (thread != NULL) {
     OSThread::SetCurrent(thread);
     thread->set_name(name);
     UnblockSIGPROF();
     // Call the supplied thread start function handing it its parameters.
     function(parameter);
   }
 
   return NULL;
 }
 
-
 int OSThread::Start(const char* name,
                     ThreadStartFunction function,
                     uword parameter) {
   pthread_attr_t attr;
   int result = pthread_attr_init(&attr);
   RETURN_ON_PTHREAD_FAILURE(result);
 
   result = pthread_attr_setstacksize(&attr, OSThread::GetMaxStackSize());
   RETURN_ON_PTHREAD_FAILURE(result);
 
   ThreadStartData* data = new ThreadStartData(name, function, parameter);
 
   pthread_t tid;
   result = pthread_create(&tid, &attr, ThreadStart, data);
   RETURN_ON_PTHREAD_FAILURE(result);
 
   result = pthread_attr_destroy(&attr);
   RETURN_ON_PTHREAD_FAILURE(result);
 
   return 0;
 }
 
-
 const ThreadId OSThread::kInvalidThreadId = static_cast<ThreadId>(0);
 const ThreadJoinId OSThread::kInvalidThreadJoinId =
     static_cast<ThreadJoinId>(0);
 
-
 ThreadLocalKey OSThread::CreateThreadLocal(ThreadDestructor destructor) {
   pthread_key_t key = kUnsetThreadLocalKey;
   int result = pthread_key_create(&key, destructor);
   VALIDATE_PTHREAD_RESULT(result);
   ASSERT(key != kUnsetThreadLocalKey);
   return key;
 }
 
-
 void OSThread::DeleteThreadLocal(ThreadLocalKey key) {
   ASSERT(key != kUnsetThreadLocalKey);
   int result = pthread_key_delete(key);
   VALIDATE_PTHREAD_RESULT(result);
 }
 
-
 void OSThread::SetThreadLocal(ThreadLocalKey key, uword value) {
   ASSERT(key != kUnsetThreadLocalKey);
   int result = pthread_setspecific(key, reinterpret_cast<void*>(value));
   VALIDATE_PTHREAD_RESULT(result);
 }
 
-
 intptr_t OSThread::GetMaxStackSize() {
   const int kStackSize = (128 * kWordSize * KB);
   return kStackSize;
 }
 
-
 ThreadId OSThread::GetCurrentThreadId() {
   return pthread_self();
 }
 
-
 #ifndef PRODUCT
 ThreadId OSThread::GetCurrentThreadTraceId() {
   return syscall(__NR_gettid);
 }
 #endif  // PRODUCT
 
-
 ThreadJoinId OSThread::GetCurrentThreadJoinId(OSThread* thread) {
   ASSERT(thread != NULL);
   // Make sure we're filling in the join id for the current thread.
   ASSERT(thread->id() == GetCurrentThreadId());
   // Make sure the join_id_ hasn't been set, yet.
   DEBUG_ASSERT(thread->join_id_ == kInvalidThreadJoinId);
   pthread_t id = pthread_self();
 #if defined(DEBUG)
   thread->join_id_ = id;
 #endif
   return id;
 }
 
-
 void OSThread::Join(ThreadJoinId id) {
   int result = pthread_join(id, NULL);
   ASSERT(result == 0);
 }
 
-
 intptr_t OSThread::ThreadIdToIntPtr(ThreadId id) {
   ASSERT(sizeof(id) == sizeof(intptr_t));
   return static_cast<intptr_t>(id);
 }
 
-
 ThreadId OSThread::ThreadIdFromIntPtr(intptr_t id) {
   return static_cast<ThreadId>(id);
 }
 
-
 bool OSThread::Compare(ThreadId a, ThreadId b) {
   return pthread_equal(a, b) != 0;
 }
 
-
 bool OSThread::GetCurrentStackBounds(uword* lower, uword* upper) {
   pthread_attr_t attr;
   if (pthread_getattr_np(pthread_self(), &attr)) {
     return false;
   }
 
   void* base;
   size_t size;
   int error = pthread_attr_getstack(&attr, &base, &size);
   pthread_attr_destroy(&attr);
   if (error) {
     return false;
   }
 
   *lower = reinterpret_cast<uword>(base);
   *upper = *lower + size;
   return true;
 }
 
-
 Mutex::Mutex() {
   pthread_mutexattr_t attr;
   int result = pthread_mutexattr_init(&attr);
   VALIDATE_PTHREAD_RESULT(result);
 
 #if defined(DEBUG)
   result = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
   VALIDATE_PTHREAD_RESULT(result);
 #endif  // defined(DEBUG)
 
   result = pthread_mutex_init(data_.mutex(), &attr);
   // Verify that creating a pthread_mutex succeeded.
   VALIDATE_PTHREAD_RESULT(result);
 
   result = pthread_mutexattr_destroy(&attr);
   VALIDATE_PTHREAD_RESULT(result);
 
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   owner_ = OSThread::kInvalidThreadId;
 #endif  // defined(DEBUG)
 }
 
-
 Mutex::~Mutex() {
   int result = pthread_mutex_destroy(data_.mutex());
   // Verify that the pthread_mutex was destroyed.
   VALIDATE_PTHREAD_RESULT(result);
 
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   ASSERT(owner_ == OSThread::kInvalidThreadId);
 #endif  // defined(DEBUG)
 }
 
-
 void Mutex::Lock() {
   int result = pthread_mutex_lock(data_.mutex());
   // Specifically check for dead lock to help debugging.
   ASSERT(result != EDEADLK);
   ASSERT_PTHREAD_SUCCESS(result);  // Verify no other errors.
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   owner_ = OSThread::GetCurrentThreadId();
 #endif  // defined(DEBUG)
 }
 
-
 bool Mutex::TryLock() {
   int result = pthread_mutex_trylock(data_.mutex());
   // Return false if the lock is busy and locking failed.
   if (result == EBUSY) {
     return false;
   }
   ASSERT_PTHREAD_SUCCESS(result);  // Verify no other errors.
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   owner_ = OSThread::GetCurrentThreadId();
 #endif  // defined(DEBUG)
   return true;
 }
 
-
 void Mutex::Unlock() {
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   ASSERT(IsOwnedByCurrentThread());
   owner_ = OSThread::kInvalidThreadId;
 #endif  // defined(DEBUG)
   int result = pthread_mutex_unlock(data_.mutex());
   // Specifically check for wrong thread unlocking to aid debugging.
   ASSERT(result != EPERM);
   ASSERT_PTHREAD_SUCCESS(result);  // Verify no other errors.
 }
 
-
 Monitor::Monitor() {
   pthread_mutexattr_t mutex_attr;
   int result = pthread_mutexattr_init(&mutex_attr);
   VALIDATE_PTHREAD_RESULT(result);
 
 #if defined(DEBUG)
   result = pthread_mutexattr_settype(&mutex_attr, PTHREAD_MUTEX_ERRORCHECK);
   VALIDATE_PTHREAD_RESULT(result);
 #endif  // defined(DEBUG)
 
@@ skipping 15 matching lines @@
 
   result = pthread_condattr_destroy(&cond_attr);
   VALIDATE_PTHREAD_RESULT(result);
 
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   owner_ = OSThread::kInvalidThreadId;
 #endif  // defined(DEBUG)
 }
 
-
 Monitor::~Monitor() {
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   ASSERT(owner_ == OSThread::kInvalidThreadId);
 #endif  // defined(DEBUG)
 
   int result = pthread_mutex_destroy(data_.mutex());
   VALIDATE_PTHREAD_RESULT(result);
 
   result = pthread_cond_destroy(data_.cond());
   VALIDATE_PTHREAD_RESULT(result);
 }
 
-
 bool Monitor::TryEnter() {
   int result = pthread_mutex_trylock(data_.mutex());
   // Return false if the lock is busy and locking failed.
   if (result == EBUSY) {
     return false;
   }
   ASSERT_PTHREAD_SUCCESS(result);  // Verify no other errors.
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   ASSERT(owner_ == OSThread::kInvalidThreadId);
   owner_ = OSThread::GetCurrentThreadId();
 #endif  // defined(DEBUG)
   return true;
 }
 
-
 void Monitor::Enter() {
   int result = pthread_mutex_lock(data_.mutex());
   VALIDATE_PTHREAD_RESULT(result);
 
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   ASSERT(owner_ == OSThread::kInvalidThreadId);
   owner_ = OSThread::GetCurrentThreadId();
 #endif  // defined(DEBUG)
 }
 
-
 void Monitor::Exit() {
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   ASSERT(IsOwnedByCurrentThread());
   owner_ = OSThread::kInvalidThreadId;
 #endif  // defined(DEBUG)
 
   int result = pthread_mutex_unlock(data_.mutex());
   VALIDATE_PTHREAD_RESULT(result);
 }
 
-
 Monitor::WaitResult Monitor::Wait(int64_t millis) {
   Monitor::WaitResult retval = WaitMicros(millis * kMicrosecondsPerMillisecond);
   return retval;
 }
 
-
 Monitor::WaitResult Monitor::WaitMicros(int64_t micros) {
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   ASSERT(IsOwnedByCurrentThread());
   ThreadId saved_owner = owner_;
   owner_ = OSThread::kInvalidThreadId;
 #endif  // defined(DEBUG)
 
   Monitor::WaitResult retval = kNotified;
   if (micros == kNoTimeout) {
@@ skipping 12 matching lines @@
 
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
   ASSERT(owner_ == OSThread::kInvalidThreadId);
   owner_ = OSThread::GetCurrentThreadId();
   ASSERT(owner_ == saved_owner);
 #endif  // defined(DEBUG)
   return retval;
 }
 
-
 void Monitor::Notify() {
   // When running with assertions enabled we track the owner.
   ASSERT(IsOwnedByCurrentThread());
   int result = pthread_cond_signal(data_.cond());
   VALIDATE_PTHREAD_RESULT(result);
 }
 
-
 void Monitor::NotifyAll() {
   // When running with assertions enabled we track the owner.
   ASSERT(IsOwnedByCurrentThread());
   int result = pthread_cond_broadcast(data_.cond());
   VALIDATE_PTHREAD_RESULT(result);
 }
 
 }  // namespace dart
 
 #endif  // defined(HOST_OS_LINUX)