Partially implement DBC profiler.

runtime/vm/thread.h

 // Copyright (c) 2015, 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.
 
 #ifndef VM_THREAD_H_
 #define VM_THREAD_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/atomic.h"
@@ skipping 311 matching lines @@
   }
 #endif
   void StoreBufferBlockProcess(StoreBuffer::ThresholdPolicy policy);
   static intptr_t store_buffer_block_offset() {
     return OFFSET_OF(Thread, store_buffer_block_);
   }
 
   uword top_exit_frame_info() const {
     return top_exit_frame_info_;
   }
+  void set_top_exit_frame_info(uword top_exit_frame_info) {
+    top_exit_frame_info_ = top_exit_frame_info;
+  }
   static intptr_t top_exit_frame_info_offset() {
     return OFFSET_OF(Thread, top_exit_frame_info_);
   }
 
   StackResource* top_resource() const { return top_resource_; }
   void set_top_resource(StackResource* value) {
     top_resource_ = value;
   }
   static intptr_t top_resource_offset() {
     return OFFSET_OF(Thread, top_resource_);
@@ skipping 378 matching lines @@
   explicit Thread(Isolate* isolate);
 
   void StoreBufferRelease(
       StoreBuffer::ThresholdPolicy policy = StoreBuffer::kCheckThreshold);
   void StoreBufferAcquire();
 
   void set_zone(Zone* zone) {
     zone_ = zone;
   }
 
-  void set_top_exit_frame_info(uword top_exit_frame_info) {
-    top_exit_frame_info_ = top_exit_frame_info;
-  }
-
   void set_safepoint_state(uint32_t value) {
     safepoint_state_ = value;
   }
   void EnterSafepointUsingLock();
   void ExitSafepointUsingLock();
   void BlockForSafepoint();
 
   static void SetCurrent(Thread* current) {
     OSThread::SetCurrentTLS(reinterpret_cast<uword>(current));
   }
@@ skipping 28 matching lines @@
 // Disable thread interrupts.
 class DisableThreadInterruptsScope : public StackResource {
  public:
   explicit DisableThreadInterruptsScope(Thread* thread);
   ~DisableThreadInterruptsScope();
 };
 
 }  // namespace dart
 
 #endif  // VM_THREAD_H_