- Reduce the number of Isolate::Current() calls.

runtime/vm/pages.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/pages.h"
 
 #include "platform/assert.h"
 #include "vm/compiler_stats.h"
 #include "vm/gc_marker.h"
 #include "vm/gc_sweeper.h"
@@ skipping 428 matching lines @@
       OS::Print("Trying to detach code.\n");
     }
     page_space_controller_.set_last_code_collection_in_us(start);
     return true;
   }
   return false;
 }
 
 
 void PageSpace::WriteProtectCode(bool read_only) {
-  // TODO(koda): Is this flag still useful?
   if (FLAG_write_protect_code) {
     HeapPage* current_page = pages_;
     while (current_page != NULL) {
       if (current_page->type() == HeapPage::kExecutable) {
         current_page->WriteProtect(read_only);
       }
       current_page = NextPageAnySize(current_page);
     }
   }
 }
@@ skipping 222 matching lines @@
     return 0;
   } else {
     ASSERT(total_time >= gc_time);
     int result= static_cast<int>((static_cast<double>(gc_time) /
                              static_cast<double>(total_time)) * 100);
     return result;
   }
 }
 
 }  // namespace dart