Disable the profiler when a debugger is attached

runtime/vm/thread_interrupter_win.cc

 // Copyright (c) 2013, 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 "vm/flags.h"
 #include "vm/os.h"
 #include "vm/profiler.h"
@@ skipping 45 matching lines @@
 
   static void Interrupt(OSThread* os_thread) {
     ASSERT(!OSThread::Compare(GetCurrentThreadId(), os_thread->id()));
     HANDLE handle = OpenThread(
         THREAD_GET_CONTEXT | THREAD_QUERY_INFORMATION | THREAD_SUSPEND_RESUME,
         false, os_thread->id());
     ASSERT(handle != NULL);
     DWORD result = SuspendThread(handle);
     if (result == kThreadError) {
       if (FLAG_trace_thread_interrupter) {
-        OS::Print("ThreadInterrupter failed to suspend thread %p\n",
-                  reinterpret_cast<void*>(os_thread->id()));
+        OS::PrintErr("ThreadInterrupter failed to suspend thread %p\n",
+                     reinterpret_cast<void*>(os_thread->id()));
       }
       CloseHandle(handle);
       return;
     }
     InterruptedThreadState its;
     if (!GrabRegisters(handle, &its)) {
       // Failed to get thread registers.
       ResumeThread(handle);
       if (FLAG_trace_thread_interrupter) {
-        OS::Print("ThreadInterrupter failed to get registers for %p\n",
-                  reinterpret_cast<void*>(os_thread->id()));
+        OS::PrintErr("ThreadInterrupter failed to get registers for %p\n",
+                     reinterpret_cast<void*>(os_thread->id()));
       }
       CloseHandle(handle);
       return;
     }
     // Currently we sample only threads that are associated
     // with an isolate. It is safe to call 'os_thread->thread()'
     // here as the thread which is being queried is suspended.
     Thread* thread = os_thread->thread();
     if (thread != NULL) {
       Profiler::SampleThread(thread, its);
     }
     ResumeThread(handle);
     CloseHandle(handle);
   }
 };
 
 
+bool ThreadInterrupter::IsDebuggerAttached() {
+  return false;
+}
+
+
 void ThreadInterrupter::InterruptThread(OSThread* thread) {
   if (FLAG_trace_thread_interrupter) {
-    OS::Print("ThreadInterrupter suspending %p\n",
-              reinterpret_cast<void*>(thread->id()));
+    OS::PrintErr("ThreadInterrupter suspending %p\n",
+                 reinterpret_cast<void*>(thread->id()));
   }
   ThreadInterrupterWin::Interrupt(thread);
   if (FLAG_trace_thread_interrupter) {
-    OS::Print("ThreadInterrupter resuming %p\n",
-              reinterpret_cast<void*>(thread->id()));
+    OS::PrintErr("ThreadInterrupter resuming %p\n",
+                 reinterpret_cast<void*>(thread->id()));
   }
 }
 
 
 void ThreadInterrupter::InstallSignalHandler() {
   // Nothing to do on Windows.
 }
 
 
 void ThreadInterrupter::RemoveSignalHandler() {
   // Nothing to do on Windows.
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_WINDOWS)