🏄 [heap] Add page evacuation mode for new->old

src/heap/mark-compact.h

Index: src/heap/mark-compact.h
diff --git a/src/heap/mark-compact.h b/src/heap/mark-compact.h
index cd207bcda27ba792ec2291abead68006c86932be..aa7685829fd82c9e0aeae882ca984b224e38ff3f 100644
--- a/src/heap/mark-compact.h
+++ b/src/heap/mark-compact.h
@@ -498,6 +498,9 @@ class MarkCompactCollector {
   int SweepInParallel(PagedSpace* space, int required_freed_bytes,
                       int max_pages = 0);
 
+  int SweepInParallel(std::vector<Page*>& pages, PagedSpace* space,
+                      int required_freed_bytes, int max_pages = 0);
+
   // Sweeps a given page concurrently to the sweeper threads. It returns the
   // size of the maximum continuous freed memory chunk.
   int SweepInParallel(Page* page, PagedSpace* space);
@@ -578,6 +581,7 @@ class MarkCompactCollector {
   }
 
  private:
+  class EvacuateNewSpacePageVisitor;
   class EvacuateNewSpaceVisitor;
   class EvacuateOldSpaceVisitor;
   class EvacuateVisitorBase;
@@ -827,6 +831,7 @@ class MarkCompactCollector {
   SweepingList sweeping_list_old_space_;
   SweepingList sweeping_list_code_space_;
   SweepingList sweeping_list_map_space_;
+  SweepingList* sweeping_list_shared_;

[Michael Lippautz, 2016/04/08 07:09:58]

Not too happy about cluttering up all the sweeper lists.

Maybe we should create  a SweeperState that contains all the lists and the
corresponding mutex and getters?

[Hannes Payer (out of office), 2016/04/08 10:42:40]

Yeah, that does not really scale. You can do that in a follow-up cl.

I don't like the name sweeping_list_shared_; The pages are promoted pages, let's
call it like that.

[Michael Lippautz, 2016/04/08 11:30:00]

It's sweeping_list_promoted_pages_ for now.

 
   // True if we are collecting slots to perform evacuation from evacuation
   // candidates.