public void Construct(IJavaPeerable peer, ref JniObjectReference reference, JniObjectReferenceOptions options)
{
if (peer == null)
{
throw new ArgumentNullException(nameof(peer));
}
var newRef = peer.PeerReference;
if (newRef.IsValid)
{
// Activation! See ManagedPeer.RunConstructor
peer.SetJniManagedPeerState(peer.JniManagedPeerState | JniManagedPeerStates.Activatable);
JniObjectReference.Dispose(ref reference, options);
newRef = newRef.NewGlobalRef();
}
else if (options == JniObjectReferenceOptions.None)
{
// `reference` is likely *InvalidJniObjectReference, and can't be touched
return;
}
else if (!reference.IsValid)
{
throw new ArgumentException("JNI Object Reference is invalid.", nameof(reference));
}
else
{
newRef = reference;
if ((options & JniObjectReferenceOptions.Copy) == JniObjectReferenceOptions.Copy)
{
newRef = reference.NewGlobalRef();
}
JniObjectReference.Dispose(ref reference, options);
}
peer.SetPeerReference(newRef);
peer.SetJniIdentityHashCode(JniSystem.IdentityHashCode(newRef));
var o = Runtime.ObjectReferenceManager;
if (o.LogGlobalReferenceMessages)
{
o.WriteGlobalReferenceLine("Created PeerReference={0} IdentityHashCode=0x{1} Instance=0x{2} Instance.Type={3}, Java.Type={4}",
newRef.ToString(),
peer.JniIdentityHashCode.ToString("x"),
RuntimeHelpers.GetHashCode(peer).ToString("x"),
peer.GetType().FullName,
JniEnvironment.Types.GetJniTypeNameFromInstance(newRef));
}
if ((options & DoNotRegisterTarget) != DoNotRegisterTarget)
{
Add(peer);
}
}
internal void AddPeer(IJavaPeerable value, IntPtr handle, JniHandleOwnership transfer, out IntPtr handleField)
{
if (handle == IntPtr.Zero)
{
handleField = handle;
return;
}
var transferType = transfer & (JniHandleOwnership.DoNotTransfer | JniHandleOwnership.TransferLocalRef | JniHandleOwnership.TransferGlobalRef);
switch (transferType)
{
case JniHandleOwnership.DoNotTransfer:
handleField = JNIEnv.NewGlobalRef(handle);
break;
case JniHandleOwnership.TransferLocalRef:
handleField = JNIEnv.NewGlobalRef(handle);
JNIEnv.DeleteLocalRef(handle);
break;
case JniHandleOwnership.TransferGlobalRef:
handleField = handle;
break;
default:
throw new ArgumentOutOfRangeException("transfer", transfer,
"Invalid `transfer` value: " + transfer + " on type " + value.GetType());
}
if (handleField == IntPtr.Zero)
{
throw new InvalidOperationException("Unable to allocate Global Reference for object '" + value.ToString() + "'!");
}
IntPtr hash = JNIEnv.IdentityHash !(handleField);
value.SetJniIdentityHashCode((int)hash);
if ((transfer & JniHandleOwnership.DoNotRegister) == 0)
{
AddPeer(value, new JniObjectReference(handleField, JniObjectReferenceType.Global), hash);
}
if (Logger.LogGlobalRef)
{
JNIEnv._monodroid_gref_log("handle 0x" + handleField.ToString("x") +
"; key_handle 0x" + hash.ToString("x") +
": Java Type: `" + JNIEnv.GetClassNameFromInstance(handleField) + "`; " +
"MCW type: `" + value.GetType().FullName + "`\n");
}
}