Implement growth policy for old space using time and space signals.

runtime/vm/dart.cc

Index: runtime/vm/dart.cc
diff --git a/runtime/vm/dart.cc b/runtime/vm/dart.cc
index 4d3ee11761839536ecbaff51866509c92bcbb945..e44eb38a2aa98dd44c1ac11d9f8c9e74ef0cf68b 100644
--- a/runtime/vm/dart.cc
+++ b/runtime/vm/dart.cc
@@ -96,6 +96,7 @@ RawError* Dart::InitializeIsolate(const uint8_t* snapshot_buffer, void* data) {
     }
     SnapshotReader reader(snapshot, isolate);
     reader.ReadFullSnapshot();
+    isolate->heap()->EnableGrowthControl();

[Ivan Posva, 2012/05/29 23:27:37]

This means that the growth policy is only active when starting from a snapshot.
Probably not what you intended.

[cshapiro, 2012/05/30 17:56:24]

Done.

     if (FLAG_trace_isolates) {
       isolate->heap()->PrintSizes();
     }