Support higher CPU profiler sampling rate on Windows

src/sampler.cc

Index: src/sampler.cc
diff --git a/src/sampler.cc b/src/sampler.cc
index fa8c2e80ecd98b42d59642055f4bcbd63a44a57e..a2fd9f155c337bce48aa741e95a5e0433d576194 100644
--- a/src/sampler.cc
+++ b/src/sampler.cc
@@ -611,6 +611,8 @@ void Sampler::SampleStack(const RegisterState& state) {
 bool Sampler::CanSampleOnProfilerEventsProcessorThread() {
 #if defined(USE_SIGNALS)
   return true;
+#elif defined(_WIN32) || defined(_WIN64) || defined(__CYGWIN__)

[Benedikt Meurer, 2013/08/27 14:02:43]

You don't need to test for _WIN64, since _WIN32 is defined for both 32 and 64
bit windows.
Please convert to use V8_OS_* macros, so we can get rid of this platform
specific defines at some point:

#elif V8_OS_WIN || V8_OS_CYGWIN

[yurys, 2013/08/27 15:56:27]

Done.

+  return true;
 #else
   return false;
 #endif