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

runtime/vm/os_thread_macos.cc

Index: runtime/vm/os_thread_macos.cc
diff --git a/runtime/vm/os_thread_macos.cc b/runtime/vm/os_thread_macos.cc
index 67b18513c380de9a2f94ae145cefd4ca4f3485b2..ec7b3942fa9b8a640b8418f5b06ba3b292f1b685 100644
--- a/runtime/vm/os_thread_macos.cc
+++ b/runtime/vm/os_thread_macos.cc
@@ -7,16 +7,16 @@
 
 #include "vm/os_thread.h"
 
-#include <sys/errno.h>         // NOLINT
-#include <sys/types.h>         // NOLINT
-#include <sys/sysctl.h>        // NOLINT
-#include <mach/mach_init.h>    // NOLINT
 #include <mach/mach_host.h>    // NOLINT
+#include <mach/mach_init.h>    // NOLINT
 #include <mach/mach_port.h>    // NOLINT
 #include <mach/mach_traps.h>   // NOLINT
 #include <mach/task_info.h>    // NOLINT
-#include <mach/thread_info.h>  // NOLINT
 #include <mach/thread_act.h>   // NOLINT
+#include <mach/thread_info.h>  // NOLINT
+#include <sys/errno.h>         // NOLINT
+#include <sys/sysctl.h>        // NOLINT
+#include <sys/types.h>         // NOLINT
 
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ -34,7 +34,6 @@ namespace dart {
     FATAL2("pthread error: %d (%s)", result, error_message);                   \
   }
 
-
 #if defined(DEBUG)
 #define ASSERT_PTHREAD_SUCCESS(result) VALIDATE_PTHREAD_RESULT(result)
 #else
@@ -42,7 +41,6 @@ namespace dart {
 #define ASSERT_PTHREAD_SUCCESS(result) ASSERT(result == 0)
 #endif
 
-
 #ifdef DEBUG
 #define RETURN_ON_PTHREAD_FAILURE(result)                                      \
   if (result != 0) {                                                           \
@@ -58,7 +56,6 @@ namespace dart {
   if (result != 0) return result;
 #endif
 
-
 class ThreadStartData {
  public:
   ThreadStartData(const char* name,
@@ -78,7 +75,6 @@ class ThreadStartData {
   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.
@@ -103,7 +99,6 @@ static void* ThreadStart(void* data_ptr) {
   return NULL;
 }
 
-
 int OSThread::Start(const char* name,
                     ThreadStartFunction function,
                     uword parameter) {
@@ -126,12 +121,10 @@ int OSThread::Start(const char* name,
   return 0;
 }
 
-
 const ThreadId OSThread::kInvalidThreadId = reinterpret_cast<ThreadId>(NULL);
 const ThreadJoinId OSThread::kInvalidThreadJoinId =
     reinterpret_cast<ThreadJoinId>(NULL);
 
-
 ThreadLocalKey OSThread::CreateThreadLocal(ThreadDestructor destructor) {
   pthread_key_t key = kUnsetThreadLocalKey;
   int result = pthread_key_create(&key, destructor);
@@ -140,39 +133,33 @@ ThreadLocalKey OSThread::CreateThreadLocal(ThreadDestructor destructor) {
   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 ThreadIdFromIntPtr(pthread_mach_thread_np(pthread_self()));
 }
 #endif  // PRODUCT
 
-
 ThreadJoinId OSThread::GetCurrentThreadJoinId(OSThread* thread) {
   ASSERT(thread != NULL);
   // Make sure we're filling in the join id for the current thread.
@@ -186,36 +173,30 @@ ThreadJoinId OSThread::GetCurrentThreadJoinId(OSThread* thread) {
   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 reinterpret_cast<intptr_t>(id);
 }
 
-
 ThreadId OSThread::ThreadIdFromIntPtr(intptr_t id) {
   return reinterpret_cast<ThreadId>(id);
 }
 
-
 bool OSThread::Compare(ThreadId a, ThreadId b) {
   return pthread_equal(a, b) != 0;
 }
 
-
 bool OSThread::GetCurrentStackBounds(uword* lower, uword* upper) {
   *upper = reinterpret_cast<uword>(pthread_get_stackaddr_np(pthread_self()));
   *lower = *upper - pthread_get_stacksize_np(pthread_self());
   return true;
 }
 
-
 Mutex::Mutex() {
   pthread_mutexattr_t attr;
   int result = pthread_mutexattr_init(&attr);
@@ -239,7 +220,6 @@ Mutex::Mutex() {
 #endif  // defined(DEBUG)
 }
 
-
 Mutex::~Mutex() {
   int result = pthread_mutex_destroy(data_.mutex());
   // Verify that the pthread_mutex was destroyed.
@@ -251,7 +231,6 @@ Mutex::~Mutex() {
 #endif  // defined(DEBUG)
 }
 
-
 void Mutex::Lock() {
   int result = pthread_mutex_lock(data_.mutex());
   // Specifically check for dead lock to help debugging.
@@ -263,7 +242,6 @@ void Mutex::Lock() {
 #endif  // defined(DEBUG)
 }
 
-
 bool Mutex::TryLock() {
   int result = pthread_mutex_trylock(data_.mutex());
   // Return false if the lock is busy and locking failed.
@@ -278,7 +256,6 @@ bool Mutex::TryLock() {
   return true;
 }
 
-
 void Mutex::Unlock() {
 #if defined(DEBUG)
   // When running with assertions enabled we do track the owner.
@@ -291,7 +268,6 @@ void Mutex::Unlock() {
   ASSERT_PTHREAD_SUCCESS(result);  // Verify no other errors.
 }
 
-
 Monitor::Monitor() {
   pthread_mutexattr_t attr;
   int result = pthread_mutexattr_init(&attr);
@@ -317,7 +293,6 @@ Monitor::Monitor() {
 #endif  // defined(DEBUG)
 }
 
-
 Monitor::~Monitor() {
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
@@ -331,7 +306,6 @@ Monitor::~Monitor() {
   VALIDATE_PTHREAD_RESULT(result);
 }
 
-
 bool Monitor::TryEnter() {
   int result = pthread_mutex_trylock(data_.mutex());
   // Return false if the lock is busy and locking failed.
@@ -347,7 +321,6 @@ bool Monitor::TryEnter() {
   return true;
 }
 
-
 void Monitor::Enter() {
   int result = pthread_mutex_lock(data_.mutex());
   VALIDATE_PTHREAD_RESULT(result);
@@ -359,7 +332,6 @@ void Monitor::Enter() {
 #endif  // defined(DEBUG)
 }
 
-
 void Monitor::Exit() {
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
@@ -371,12 +343,10 @@ void Monitor::Exit() {
   VALIDATE_PTHREAD_RESULT(result);
 }
 
-
 Monitor::WaitResult Monitor::Wait(int64_t millis) {
   return WaitMicros(millis * kMicrosecondsPerMillisecond);
 }
 
-
 Monitor::WaitResult Monitor::WaitMicros(int64_t micros) {
 #if defined(DEBUG)
   // When running with assertions enabled we track the owner.
@@ -418,7 +388,6 @@ Monitor::WaitResult Monitor::WaitMicros(int64_t micros) {
   return retval;
 }
 
-
 void Monitor::Notify() {
   // When running with assertions enabled we track the owner.
   ASSERT(IsOwnedByCurrentThread());
@@ -426,7 +395,6 @@ void Monitor::Notify() {
   VALIDATE_PTHREAD_RESULT(result);
 }
 
-
 void Monitor::NotifyAll() {
   // When running with assertions enabled we track the owner.
   ASSERT(IsOwnedByCurrentThread());