[heap] Decouple old generation allocation limit from external memory.

src/heap/incremental-marking.cc

 // 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.
 
 #include "src/heap/incremental-marking.h"
 
 #include "src/code-stubs.h"
 #include "src/compilation-cache.h"
 #include "src/conversions.h"
 #include "src/heap/gc-idle-time-handler.h"
@@ skipping 1084 matching lines @@
 
   if (space_left_is_very_small ||
       only_1_nth_of_space_that_was_available_still_left) {
     if (FLAG_trace_incremental_marking)
       heap()->isolate()->PrintWithTimestamp(
           "[IncrementalMarking] Speed up marking because of low space left\n");
     speed_up = true;
   }
 
   bool size_of_old_space_multiplied_by_n_during_marking =
-      (heap_->PromotedTotalSize() >
+      (heap_->PromotedSpaceSizeOfObjects() >
        (marking_speed_ + 1) *
            old_generation_space_used_at_start_of_incremental_);
   if (size_of_old_space_multiplied_by_n_during_marking) {
     speed_up = true;
     if (FLAG_trace_incremental_marking) {
       heap()->isolate()->PrintWithTimestamp(
           "[IncrementalMarking] Speed up marking because of heap size "
           "increase\n");
     }
   }
 
   int64_t promoted_during_marking =
-      heap_->PromotedTotalSize() -
+      heap_->PromotedSpaceSizeOfObjects() -
       old_generation_space_used_at_start_of_incremental_;
   intptr_t delay = marking_speed_ * MB;
   intptr_t scavenge_slack = heap_->MaxSemiSpaceSize();
 
   // We try to scan at at least twice the speed that we are allocating.
   if (promoted_during_marking > bytes_scanned_ / 2 + scavenge_slack + delay) {
     if (FLAG_trace_incremental_marking) {
       heap()->isolate()->PrintWithTimestamp(
           "[IncrementalMarking] Speed up marking because marker was not "
           "keeping up\n");
@@ skipping 154 matching lines @@
         duration);
   }
 }
 
 
 void IncrementalMarking::ResetStepCounters() {
   steps_count_ = 0;
   old_generation_space_available_at_start_of_incremental_ =
       SpaceLeftInOldSpace();
   old_generation_space_used_at_start_of_incremental_ =
-      heap_->PromotedTotalSize();
+      heap_->PromotedSpaceSizeOfObjects();
   bytes_rescanned_ = 0;
   marking_speed_ = kInitialMarkingSpeed;
   bytes_scanned_ = 0;
   write_barriers_invoked_since_last_step_ = 0;
   bytes_marked_ahead_of_schedule_ = 0;
 }
 
 
 int64_t IncrementalMarking::SpaceLeftInOldSpace() {
   return heap_->MaxOldGenerationSize() - heap_->PromotedSpaceSizeOfObjects();
 }
 
 
 bool IncrementalMarking::IsIdleMarkingDelayCounterLimitReached() {
   return idle_marking_delay_counter_ > kMaxIdleMarkingDelayCounter;
 }
 
 
 void IncrementalMarking::IncrementIdleMarkingDelayCounter() {
   idle_marking_delay_counter_++;
 }
 
 
 void IncrementalMarking::ClearIdleMarkingDelayCounter() {
   idle_marking_delay_counter_ = 0;
 }
 
 }  // namespace internal
 }  // namespace v8