Sampling profiler

runtime/platform/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 "platform/thread.h"
 
 #include <process.h>  // NOLINT
@@ skipping 74 matching lines @@
   }
 }
 
 
 intptr_t Thread::GetMaxStackSize() {
   const int kStackSize = (128 * kWordSize * KB);
   return kStackSize;
 }
 
 
+ThreadId Thread::GetCurrentThreadId() {
+  return GetCurrentThread();
+}
+
+
+void Thread::GetThreadCPUUsage(int64_t* cpu_usage) {
+  ASSERT(cpu_usage != NULL);
+  *cpu_usage = 0;

[siva, 2013/10/28 05:19:21]

UNIMPLEMENTED();

[Cutch, 2013/11/04 20:36:05]

Done, but will be implemented soon.

+}
+
+
 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());
   }
 }
 
 
 Mutex::Mutex() {
@@ skipping 226 matching lines @@
     }
   }
 
   // Reacquire the monitor critical section before continuing.
   EnterCriticalSection(&data_.cs_);
 
   return retval;
 }
 
 
+Monitor::WaitResult Monitor::WaitMicros(int64_t micros) {
+  // TODO(johnmccutchan): Investigate sub-millisecond sleep times on Windows.
+  int64_t millis = micros / kMicrosecondsPerMillisecond;
+  if ((millis * kMicrosecondsPerMillisecond) < micros) {
+    // We've been asked to sleep for a fraction of a millisecond,
+    // this isn't supported on Windows. Bumps milliseconds up by one
+    // so that we never return too early. We likely return late though.
+    millis += 1;
+  }
+  return Wait(millis);
+}
+
+
 void Monitor::Notify() {
   data_.SignalAndRemoveFirstWaiter();
 }
 
 
 void Monitor::NotifyAll() {
   // If one of the objects in the list of waiters wakes because of a
   // timeout before we signal it, that object will get an extra
   // 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 dart
 
 #endif  // defined(TARGET_OS_WINDOWS)