Distinct block sizes for StoreBuffer/MarkingStack.

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 "vm/globals.h"
 #include "vm/os_thread.h"
 #include "vm/store_buffer.h"
@@ skipping 111 matching lines @@
   CHA* cha() const;
   void set_cha(CHA* value);
 
   void StoreBufferAddObject(RawObject* obj);
   void StoreBufferAddObjectGC(RawObject* obj);
 #if defined(TESTING)
   bool StoreBufferContains(RawObject* obj) const {
     return store_buffer_block_->Contains(obj);
   }
 #endif
-  void StoreBufferBlockProcess(bool check_threshold);
+  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 state_.top_exit_frame_info; }
   static intptr_t top_exit_frame_info_offset() {
     return OFFSET_OF(Thread, state_) + OFFSET_OF(State, top_exit_frame_info);
   }
 
   StackResource* top_resource() const { return state_.top_resource; }
@@ skipping 159 matching lines @@
 #undef DECLARE_MEMBERS
 
   explicit Thread(bool init_vm_constants = true);
 
   void InitVMConstants();
 
   void ClearState() {
     memset(&state_, 0, sizeof(state_));
   }
 
-  void StoreBufferRelease(bool check_threshold = true);
+  void StoreBufferRelease(
+      StoreBuffer::ThresholdPolicy policy = StoreBuffer::kCheckThreshold);
   void StoreBufferAcquire();
 
   void set_zone(Zone* zone) {
     state_.zone = zone;
   }
 
   void set_top_exit_frame_info(uword top_exit_frame_info) {
     state_.top_exit_frame_info = top_exit_frame_info;
   }
 
   static void SetCurrent(Thread* current);
 
   void Schedule(Isolate* isolate, bool bypass_safepoint = false);
   void Unschedule(bool bypass_safepoint = false);
 
   friend class ApiZone;
   friend class Isolate;
   friend class StackZone;
   friend class ThreadRegistry;
   DISALLOW_COPY_AND_ASSIGN(Thread);
 };
 
 }  // namespace dart
 
 #endif  // VM_THREAD_H_