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

test/cctest/heap/test-heap.cc

Index: test/cctest/heap/test-heap.cc
diff --git a/test/cctest/heap/test-heap.cc b/test/cctest/heap/test-heap.cc
index 1ba0f5006a5a7257810ab2472a4939067aa52c22..8db9c61a17c9a30d5b1f02e96244cc63be35ea94 100644
--- a/test/cctest/heap/test-heap.cc
+++ b/test/cctest/heap/test-heap.cc
@@ -3557,6 +3557,9 @@ TEST(ReleaseOverReservedPages) {
   // Concurrent sweeping adds non determinism, depending on when memory is
   // available for further reuse.
   i::FLAG_concurrent_sweeping = false;
+  // Fast evacuation of pages may result in a different page count in old space.
+  // Setting to 101% effectively disables this feature.
+  i::FLAG_page_evacuation_threshold = 101;

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

That is not very nice... should we introduce a separate flag for that?

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

Done.

   CcTest::InitializeVM();
   Isolate* isolate = CcTest::i_isolate();
   Factory* factory = isolate->factory();