Move postGC out of CrossThreadPersistentRegion::LockScope

third_party/WebKit/Source/platform/heap/ThreadState.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 212 matching lines @@
   bool isSweepingInProgress() const {
     return gcState() == Sweeping ||
            gcState() == SweepingAndPreciseGCScheduled ||
            gcState() == SweepingAndIdleGCScheduled;
   }
 
   // A GC runs in the following sequence.
   //
   // 1) preGC() is called.
   // 2) ThreadHeap::collectGarbage() is called. This marks live objects.
-  // 3) postGC() is called. This does thread-local weak processing,
-  //    pre-finalization, eager sweeping and heap compaction.
+  // 3) postGC() is called. This does thread-local weak processing.
+  // 4) preSweep() is called. This does pre-finalization, eager sweeping and
+  //    heap compaction.
   // 4) Lazy sweeping sweeps heaps incrementally. completeSweep() may be called
   //    to complete the sweeping.
   // 5) postSweep() is called.
   //
   // Notes:
   // - The world is stopped between 1) and 3).
   // - isInGC() returns true between 1) and 3).
   // - isSweepingInProgress() returns true while any sweeping operation is
   //   running.
   void makeConsistentForGC();
   void preGC();
   void postGC(BlinkGC::GCType);
   void completeSweep();
+  void preSweep(BlinkGC::GCType);
   void postSweep();
   // makeConsistentForMutator() drops marks from marked objects and rebuild
   // free lists. This is called after taking a snapshot and before resuming
   // the executions of mutators.
   void makeConsistentForMutator();
 
   void compact();
 
   // Support for disallowing allocation. Mainly used for sanity
   // checks asserts.
@@ skipping 478 matching lines @@
 class ThreadStateFor<AnyThread> {
   STATIC_ONLY(ThreadStateFor);
 
  public:
   static ThreadState* state() { return ThreadState::current(); }
 };
 
 }  // namespace blink
 
 #endif  // ThreadState_h