Enable top exit frame profiler mode by default + Windows fixes

runtime/vm/stack_frame.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/stack_frame.h"
 
 #include "vm/assembler.h"
 #include "vm/deopt_instructions.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
@@ skipping 250 matching lines @@
 
 bool StackFrame::IsValid() const {
   if (IsEntryFrame() || IsExitFrame() || IsStubFrame()) {
     return true;
   }
   return (LookupDartCode() != Code::null());
 }
 
 
 void StackFrameIterator::SetupLastExitFrameData() {
-  Isolate* current = Isolate::Current();
-  uword exit_marker = current->top_exit_frame_info();
+  uword exit_marker = isolate_->top_exit_frame_info();
   frames_.fp_ = exit_marker;
 }
 
 
 void StackFrameIterator::SetupNextExitFrameData() {
   uword exit_address = entry_.fp() + (kExitLinkSlotFromEntryFp * kWordSize);
   uword exit_marker = *reinterpret_cast<uword*>(exit_address);
   frames_.fp_ = exit_marker;
   frames_.sp_ = 0;
   frames_.pc_ = 0;
@@ skipping 78 matching lines @@
   ASSERT((validate_ == kDontValidateFrames) || current_frame_->IsValid());
   if (current_frame_->IsEntryFrame()) {
     if (HasNextFrame()) {  // We have another chained block.
       current_frame_ = NextExitFrame();
       return current_frame_;
     }
     current_frame_ = NULL;  // No more frames.
     return current_frame_;
   }
   ASSERT(current_frame_->IsExitFrame() ||
-         current_frame_->IsDartFrame() ||
+         current_frame_->IsDartFrame(validate_) ||
          current_frame_->IsStubFrame());
 
   // Consume dart/stub frames using StackFrameIterator::FrameSetIterator
   // until we are out of dart/stub frames at which point we return the
   // corresponding entry frame for that set of dart/stub frames.
   current_frame_ =
       (frames_.HasNext()) ? frames_.NextFrame(validate_) : NextEntryFrame();
   return current_frame_;
 }
 
@@ skipping 101 matching lines @@
     if (deopt_instr->kind() == DeoptInstr::kCallerFp) {
       return (index - num_materializations_);
     }
   }
   UNREACHABLE();
   return 0;
 }
 
 
 }  // namespace dart