Reland of "[cctest] Add tests for aborting compaction of pages"

src/heap/mark-compact.cc

Index: src/heap/mark-compact.cc
diff --git a/src/heap/mark-compact.cc b/src/heap/mark-compact.cc
index cd5f24ab47a30fc2e073460253541d9844046d5d..22fdf53184209cf511f6452d481da4769f2c492d 100644
--- a/src/heap/mark-compact.cc
+++ b/src/heap/mark-compact.cc
@@ -3678,7 +3678,9 @@ int MarkCompactCollector::SweepInParallel(PagedSpace* space,
     max_freed = SweepInParallel(p, space);
     DCHECK(max_freed >= 0);
     if (required_freed_bytes > 0 && max_freed >= required_freed_bytes) {
-      return max_freed;
+      if (!p->IsFlagSet(Page::NEVER_ALLOCATE_ON_PAGE)) {

[Hannes Payer (out of office), 2015/12/11 16:10:37]

I think I would prefer dropping Page::NEVER_ALLOCATE_ON_PAGE free memory blocks
in the free method of the free list.

[Michael Lippautz, 2015/12/16 09:24:55]

They are already filtered out during free list operations.

I added a section in the initialization of the sweeper that filters out those
special pages and resets their markbits and live bytes.

+        return max_freed;
+      }
     }
     max_freed_overall = Max(max_freed, max_freed_overall);
     if (p == space->end_of_unswept_pages()) break;