Attempt at enabling profiler

runtime/platform/thread_macos.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(TARGET_OS_MACOS)
 
 #include "platform/thread.h"
 
 #include <sys/errno.h>  // NOLINT
@@ skipping 127 matching lines @@
 
 
 ThreadId Thread::GetCurrentThreadId() {
   return pthread_self();
 }
 
 
 void Thread::GetThreadCpuUsage(ThreadId thread_id, int64_t* cpu_usage) {
   ASSERT(thread_id == GetCurrentThreadId());
   ASSERT(cpu_usage != NULL);
-  mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
-  thread_basic_info_data_t info_data;
-  thread_basic_info_t info = &info_data;
-  mach_port_t thread_port = mach_thread_self();
-  kern_return_t r = thread_info(thread_port, THREAD_BASIC_INFO,
-                                (thread_info_t)info, &count);
-  mach_port_deallocate(mach_task_self(), thread_port);
-  if (r == KERN_SUCCESS) {
-    *cpu_usage = (info->user_time.seconds * kMicrosecondsPerSecond) +
-                 info->user_time.microseconds;
-    return;
+  // TODO(johnmccutchan): Enable this after fixing issue with macos directory
+  // watcher.
+  const bool get_cpu_usage = false;
+  if (get_cpu_usage) {
+    mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
+    thread_basic_info_data_t info_data;
+    thread_basic_info_t info = &info_data;
+    mach_port_t thread_port = mach_thread_self();
+    kern_return_t r = thread_info(thread_port, THREAD_BASIC_INFO,
+                                  (thread_info_t)info, &count);
+    mach_port_deallocate(mach_task_self(), thread_port);
+    if (r == KERN_SUCCESS) {
+      *cpu_usage = (info->user_time.seconds * kMicrosecondsPerSecond) +
+                   info->user_time.microseconds;
+      return;
+    }
   }
   *cpu_usage = 0;
 }
 
 
 Mutex::Mutex() {
   pthread_mutexattr_t attr;
   int result = pthread_mutexattr_init(&attr);
   VALIDATE_PTHREAD_RESULT(result);
 
@@ skipping 132 matching lines @@
 
 void Monitor::NotifyAll() {
   // TODO(iposva): Do we need to track lock owners?
   int result = pthread_cond_broadcast(data_.cond());
   VALIDATE_PTHREAD_RESULT(result);
 }
 
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_MACOS)