Set unswept free bytes for concurent sweeper.

src/sweeper-thread.cc

Index: src/sweeper-thread.cc
diff --git a/src/sweeper-thread.cc b/src/sweeper-thread.cc
index 7e31e6cb56da937def85328f31ee7ce6d45f5a3e..5e212fd7b6a5724046acea0f0c7c9d3973e4e006 100644
--- a/src/sweeper-thread.cc
+++ b/src/sweeper-thread.cc
@@ -75,16 +75,22 @@ void SweeperThread::Run() {
   }
 }
 
+
+intptr_t SweeperThread::StealMemory(PagedSpace* space, FreeList* free_list) {
+  intptr_t free_bytes = space->free_list()->Concatenate(free_list);
+  space->AddToAccountingStats(free_bytes);
+  space->DecreaseUnsweptFreeBytes(free_bytes);

[Michael Starzinger, 2013/02/28 13:09:52]

As discussed offline: Let's move both (AddToAccountingStats and
DecreaseUnsweptFreeBytes) into
MarkCompactCollector::StealMemoryFromSweeperThreads, it should be part the
mark-compact.cc file.

[Hannes Payer (out of office), 2013/02/28 14:42:34]

Done.

+  return free_bytes;
+}
+
+
 intptr_t SweeperThread::StealMemory(PagedSpace* space) {
-  intptr_t free_bytes = 0;
   if (space->identity() == OLD_POINTER_SPACE) {
-    free_bytes = space->free_list()->Concatenate(&free_list_old_pointer_space_);
-    space->AddToAccountingStats(free_bytes);
+    return StealMemory(space, &free_list_old_pointer_space_);
   } else if (space->identity() == OLD_DATA_SPACE) {
-    free_bytes = space->free_list()->Concatenate(&free_list_old_data_space_);
-    space->AddToAccountingStats(free_bytes);
+    return StealMemory(space, &free_list_old_data_space_);
   }
-  return free_bytes;
+  return 0;
 }
 
 void SweeperThread::Stop() {