Grow heap slower if GC freed many global handles.

src/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_H_
 #define V8_HEAP_H_
 
 #include <cmath>
 
 #include "src/allocation.h"
@@ skipping 1059 matching lines @@
   // Sizes are in MB.
   static const int kMaxExecutableSizeLowMemoryDevice =
       128 * kPointerMultiplier;
   static const int kMaxExecutableSizeMediumMemoryDevice =
       256 * kPointerMultiplier;
   static const int kMaxExecutableSizeHighMemoryDevice =
       512 * kPointerMultiplier;
   static const int kMaxExecutableSizeHugeMemoryDevice =
       700 * kPointerMultiplier;
 
-  intptr_t OldGenerationAllocationLimit(intptr_t old_gen_size) {
-    intptr_t limit = FLAG_stress_compaction
-        ? old_gen_size + old_gen_size / 10
-        : old_gen_size * old_space_growing_factor_;
-    limit = Max(limit, kMinimumOldGenerationAllocationLimit);
-    limit += new_space_.Capacity();
-    intptr_t halfway_to_the_max = (old_gen_size + max_old_generation_size_) / 2;
-    return Min(limit, halfway_to_the_max);
-  }
+  intptr_t OldGenerationAllocationLimit(intptr_t old_gen_size,
+                                        int freed_global_handles);
 
   // Indicates whether inline bump-pointer allocation has been disabled.
   bool inline_allocation_disabled() { return inline_allocation_disabled_; }
 
   // Switch whether inline bump-pointer allocation should be used.
   void EnableInlineAllocation();
   void DisableInlineAllocation();
 
   // Implements the corresponding V8 API function.
   bool IdleNotification(int hint);
@@ skipping 410 matching lines @@
   Object* roots_[kRootListLength];
 
   size_t code_range_size_;
   int reserved_semispace_size_;
   int max_semi_space_size_;
   int initial_semispace_size_;
   intptr_t max_old_generation_size_;
   intptr_t max_executable_size_;
   intptr_t maximum_committed_;
 
-  // The old space growing factor is used in the old space heap growing
-  // strategy. The new old space size is the current old space size times
-  // old_space_growing_factor_.
-  int old_space_growing_factor_;
-
   // 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.
@@ skipping 59 matching lines @@
   // remain until the next failure and garbage collection.
   int allocation_timeout_;
 #endif  // DEBUG
 
   // Limit that triggers a global GC on the next (normally caused) GC.  This
   // is checked when we have already decided to do a GC to help determine
   // which collector to invoke, before expanding a paged space in the old
   // generation and on every allocation in large object space.
   intptr_t old_generation_allocation_limit_;
 
-  // Used to adjust the limits that control the timing of the next GC.
-  intptr_t size_of_old_gen_at_last_old_space_gc_;
-
   // Indicates that an allocation has failed in the old generation since the
   // last GC.
   bool old_gen_exhausted_;
 
   // Indicates that inline bump-pointer allocation has been globally disabled
   // for all spaces. This is used to disable allocations in generated code.
   bool inline_allocation_disabled_;
 
   // Weak list heads, threaded through the objects.
   // List heads are initilized lazily and contain the undefined_value at start.
@@ skipping 1163 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_