- Implement Isolate.pause and Isolate.resume.

runtime/vm/raw_object_snapshot.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/bigint_operations.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/snapshot.h"
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
@@ skipping 2510 matching lines @@
   }
 }
 #undef TYPED_DATA_WRITE
 #undef EXT_TYPED_DATA_WRITE
 
 
 RawCapability* Capability::ReadFrom(SnapshotReader* reader,
                                     intptr_t object_id,
                                     intptr_t tags,
                                     Snapshot::Kind kind) {
-  UNIMPLEMENTED();
-  return Capability::null();
+  uint64_t id = reader->Read<uint64_t>();
+
+  Capability& result = Capability::ZoneHandle(reader->isolate(),
+                                              Capability::New(id));
+  reader->AddBackRef(object_id, &result, kIsDeserialized);
+  return result.raw();
 }
 
 
 void RawCapability::WriteTo(SnapshotWriter* writer,
                             intptr_t object_id,
                             Snapshot::Kind kind) {
-  UNIMPLEMENTED();
+  // Write out the serialization header value for this object.
+  writer->WriteInlinedObjectHeader(object_id);
+
+  // Write out the class and tags information.
+  writer->WriteIndexedObject(kCapabilityCid);
+  writer->WriteTags(writer->GetObjectTags(this));
+
+  writer->Write(ptr()->id_);

[siva, 2014/07/01 21:42:56]

writer->Write<uint64_t>(ptr()->id_);

so it reads consistent with the ReadFrom code above.

[Ivan Posva, 2014/07/03 12:51:17]

Done. Also below in SendPort::WriteTo.

 }
 
 
 RawReceivePort* ReceivePort::ReadFrom(SnapshotReader* reader,
                                       intptr_t object_id,
                                       intptr_t tags,
                                       Snapshot::Kind kind) {
   UNREACHABLE();
   return ReceivePort::null();
 }
@@ skipping 238 matching lines @@
     // We do not allow objects with native fields in an isolate message.
     writer->SetWriteException(Exceptions::kArgument,
                               "Illegal argument in isolate message"
                               " : (object is a UserTag)");
   } else {
     UNREACHABLE();
   }
 }
 
 }  // namespace dart