Fuchsia: Use new call to get thread CPU time

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(TARGET_OS_WINDOWS)
 
 #include "bin/thread.h"
 #include "bin/thread_win.h"
 
@@ skipping 96 matching lines @@
   ASSERT(sizeof(id) <= sizeof(intptr_t));
   return static_cast<intptr_t>(id);
 }
 
 
 bool Thread::Compare(ThreadId a, ThreadId b) {
   return (a == b);
 }
 
 
-void Thread::GetThreadCpuUsage(ThreadId thread_id, int64_t* cpu_usage) {
-  static const int64_t kTimeEpoc = 116444736000000000LL;
-  static const int64_t kTimeScaler = 10;  // 100 ns to us.
-  // Although win32 uses 64-bit integers for representing timestamps,
-  // these are packed into a FILETIME structure. The FILETIME
-  // structure is just a struct representing a 64-bit integer. The
-  // TimeStamp union allows access to both a FILETIME and an integer
-  // representation of the timestamp. The Windows timestamp is in
-  // 100-nanosecond intervals since January 1, 1601.
-  union TimeStamp {
-    FILETIME ft_;
-    int64_t t_;
-  };
-  ASSERT(cpu_usage != NULL);
-  TimeStamp created;
-  TimeStamp exited;
-  TimeStamp kernel;
-  TimeStamp user;
-  HANDLE handle = OpenThread(THREAD_QUERY_INFORMATION, false, thread_id);
-  BOOL result =
-      GetThreadTimes(handle, &created.ft_, &exited.ft_, &kernel.ft_, &user.ft_);
-  CloseHandle(handle);
-  if (!result) {
-    FATAL1("GetThreadCpuUsage failed %d\n", GetLastError());
-  }
-  *cpu_usage = (user.t_ - kTimeEpoc) / kTimeScaler;
-}
-
-
 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() {
@@ skipping 272 matching lines @@
   // 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(TARGET_OS_WINDOWS)