[heap] Bail out to regular evacuation if new->old fails to allocate a page

src/heap/spaces.cc

 // Copyright 2011 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/spaces.h"
 
 #include "src/base/bits.h"
 #include "src/base/platform/platform.h"
 #include "src/full-codegen/full-codegen.h"
 #include "src/heap/slot-set.h"
@@ skipping 1808 matching lines @@
            page->IsFlagSet(MemoryChunk::IN_FROM_SPACE));
   }
 }
 
 
 void SemiSpace::Reset() {
   DCHECK_NE(anchor_.next_page(), &anchor_);
   current_page_ = anchor_.next_page();
 }
 
-void SemiSpace::ReplaceWithEmptyPage(Page* old_page) {
+bool SemiSpace::ReplaceWithEmptyPage(Page* old_page) {
+  // TODO(mlippautz): We do not have to get a new page here when the semispace
+  // is uncommitted later on.
   Page* new_page = heap()->memory_allocator()->AllocatePage(
       Page::kAllocatableMemory, this, executable());
+  if (new_page == nullptr) return false;
   Bitmap::Clear(new_page);
   new_page->SetFlags(old_page->GetFlags(), Page::kCopyAllFlags);
   new_page->set_next_page(old_page->next_page());
   new_page->set_prev_page(old_page->prev_page());
   old_page->next_page()->set_prev_page(new_page);
   old_page->prev_page()->set_next_page(new_page);
   heap()->CreateFillerObjectAt(new_page->area_start(), new_page->area_size(),
                                ClearRecordedSlots::kNo);
+  return true;
 }
 
 void SemiSpace::Swap(SemiSpace* from, SemiSpace* to) {
   // We won't be swapping semispaces without data in them.
   DCHECK_NE(from->anchor_.next_page(), &from->anchor_);
   DCHECK_NE(to->anchor_.next_page(), &to->anchor_);
 
   intptr_t saved_to_space_flags = to->current_page()->GetFlags();
 
   // We swap all properties but id_.
@@ skipping 1298 matching lines @@
     object->ShortPrint();
     PrintF("\n");
   }
   printf(" --------------------------------------\n");
   printf(" Marked: %x, LiveCount: %x\n", mark_size, LiveBytes());
 }
 
 #endif  // DEBUG
 }  // namespace internal
 }  // namespace v8