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

runtime/vm/dart.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/dart.h"
 
 #include "vm/dart_api_state.h"
 #include "vm/flags.h"
 #include "vm/freelist.h"
 #include "vm/handles.h"
@@ skipping 78 matching lines @@
   } else {
     // Initialize from snapshot (this should replicate the functionality
     // of Object::Init(..) in a regular isolate creation path.
     Object::InitFromSnapshot(isolate);
     const Snapshot* snapshot = Snapshot::SetupFromBuffer(snapshot_buffer);
     if (FLAG_trace_isolates) {
       OS::Print("Size of isolate snapshot = %ld\n", snapshot->length());
     }
     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();
     }
   }
 
   StubCode::Init(isolate);
   isolate->set_init_callback_data(data);
   if (FLAG_print_class_table) {
     isolate->class_table()->Print();
   }
   return Error::null();
 }
 
 
 void Dart::ShutdownIsolate() {
   Isolate* isolate = Isolate::Current();
   isolate->Shutdown();
   delete isolate;
 }
 
 }  // namespace dart