Profiler Take 2

runtime/vm/os_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 "vm/globals.h"
 #if defined(TARGET_OS_WINDOWS)
 
 #include "vm/os.h"
 #include "vm/vtune.h"
 
@@ skipping 156 matching lines @@
   GetSystemInfo(&info);
   return info.dwNumberOfProcessors;
 }
 
 
 void OS::Sleep(int64_t millis) {
   ::Sleep(millis);
 }
 
 
+void OS::SleepMicros(int64_t micros) {
+  // Windows only supports millisecond sleeps.
+  if (micros < kMicrosecondsPerMillisecond) {
+    // Calling ::Sleep with 0 has no determined behaviour, round up.
+    micros = kMicrosecondsPerMillisecond;
+  }
+  OS::Sleep(micros / kMicrosecondsPerMillisecond);
+}
+
+
 void OS::DebugBreak() {
 #if defined(_MSC_VER)
   // Microsoft Visual C/C++ or drop-in replacement.
   __debugbreak();
 #elif defined(__GCC__)
   // MinGW?
   asm("int $3");
 #else
   // Microsoft style assembly.
   __asm {
@@ skipping 137 matching lines @@
 }
 
 
 void OS::Exit(int code) {
   exit(code);
 }
 
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_WINDOWS)