Perform full gcs when context disposals happen too frequent.

src/heap/heap.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HEAP_HEAP_H_
 #define V8_HEAP_HEAP_H_
 
 #include <cmath>
 
 #include "src/allocation.h"
@@ skipping 736 matching lines @@
       int flags, const char* gc_reason = NULL,
       const GCCallbackFlags gc_callback_flags = kNoGCCallbackFlags);
 
   // Last hope GC, should try to squeeze as much as possible.
   void CollectAllAvailableGarbage(const char* gc_reason = NULL);
 
   // Check whether the heap is currently iterable.
   bool IsHeapIterable();
 
   // Notify the heap that a context has been disposed.
-  int NotifyContextDisposed();
+  void NotifyContextDisposed();
 
   inline void increment_scan_on_scavenge_pages() {
     scan_on_scavenge_pages_++;
     if (FLAG_gc_verbose) {
       PrintF("Scan-on-scavenge pages: %d\n", scan_on_scavenge_pages_);
     }
   }
 
   inline void decrement_scan_on_scavenge_pages() {
     scan_on_scavenge_pages_--;
@@ skipping 687 matching lines @@
 
   // For keeping track of how much data has survived
   // scavenge since last new space expansion.
   int survived_since_last_expansion_;
 
   // For keeping track on when to flush RegExp code.
   int sweep_generation_;
 
   int always_allocate_scope_depth_;
 
-  // For keeping track of context disposals.
-  int contexts_disposed_;
-
   int global_ic_age_;
 
   bool flush_monomorphic_ics_;
 
+  // If context disposals happen at a high rate, we do a full gc in between
+  // context disposal.
+  // TODO(hpayer): We should get rid of that mode.
+  static const int kNotifyContextDisposedFullGCLimitInMS = 1000;
+  double last_notify_context_disposed_;
+
   int scan_on_scavenge_pages_;
 
   NewSpace new_space_;
   OldSpace* old_pointer_space_;
   OldSpace* old_data_space_;
   OldSpace* code_space_;
   MapSpace* map_space_;
   CellSpace* cell_space_;
   PropertyCellSpace* property_cell_space_;
   LargeObjectSpace* lo_space_;
@@ skipping 1056 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_H_