public static void MonitorExit(JniObjectReference instance)
{
int r = _MonitorExit(instance);
if (r != 0)
{
var e = JniEnvironment.GetExceptionForLastThrowable();
if (e != null)
{
ExceptionDispatchInfo.Capture(e).Throw();
}
throw new InvalidOperationException(string.Format("Could not exit monitor; JNIEnv::MonitorExit() returned {0}.", r));
}
}
public static void Throw(JniObjectReference toThrow)
{
if (!toThrow.IsValid)
{
throw new ArgumentException(nameof(toThrow));
}
int r = _Throw(toThrow);
if (r != 0)
{
throw new InvalidOperationException(string.Format("Could not raise an exception; JNIEnv::Throw() returned {0}.", r));
}
}
public JniArgumentValue(JniObjectReference value)
{
this = new JniArgumentValue();
var sh = value.SafeHandle;
if (sh != null)
{
l = value.SafeHandle.DangerousGetHandle();
}
else
{
l = value.Handle;
}
}
/// <summary>
/// Try to garbage collect <paramref name="value"/>.
/// </summary>
/// <returns>
/// <c>true</c>, if <paramref name="value"/> was collected and
/// <paramref name="handle"/> is invalid; otherwise <c>false</c>.
/// </returns>
/// <param name="value">
/// The <see cref="T:Java.Interop.IJavaPeerable"/> instance to collect.
/// </param>
/// <param name="handle">
/// The <see cref="T:Java.Interop.JniObjectReference"/> of <paramref name="value"/>.
/// This value may be updated, and <see cref="P:Java.Interop.IJavaObject.PeerReference"/>
/// will be updated with this value.
/// </param>
internal protected virtual bool TryGC(IJavaPeerable value, ref JniObjectReference handle)
{
if (!handle.IsValid)
{
return(true);
}
var wgref = handle.NewWeakGlobalRef();
JniObjectReference.Dispose(ref handle);
JniGC.Collect();
handle = wgref.NewGlobalRef();
JniObjectReference.Dispose(ref wgref);
return(!handle.IsValid);
}
public virtual void DeleteWeakGlobalReference(ref JniObjectReference reference)
{
if (!reference.IsValid)
{
return;
}
AssertReferenceType(ref reference, JniObjectReferenceType.WeakGlobal);
if (WeakGlobalReferenceCount < 0)
{
AssertCount(WeakGlobalReferenceCount, "WGREF", reference.ToString());
}
JniEnvironment.References.DeleteWeakGlobalRef(reference.Handle);
reference.Invalidate();
}
public virtual JniObjectReference CreateWeakGlobalReference(JniObjectReference reference)
{
if (!reference.IsValid)
{
return(reference);
}
var n = JniEnvironment.References.NewWeakGlobalRef(reference);
if (WeakGlobalReferenceCount < 0)
{
AssertCount(WeakGlobalReferenceCount, "WGREF", reference.ToString());
}
return(n);
}
object PeekBoxedObject(JniObjectReference reference)
{
var t = PeekPeer(reference);
if (t == null)
{
return(null);
}
object r;
return(TryUnboxObject(t, out r)
? r
: null);
}
public override void DeleteWeakGlobalReference(ref JniObjectReference reference)
{
if (!reference.IsValid)
{
return;
}
NativeMethods.java_interop_gc_bridge_weak_gref_log_delete(bridge,
reference.Handle,
ToByte(reference.Type),
GetCurrentManagedThreadName(LogGlobalReferenceMessages),
Environment.CurrentManagedThreadId,
GetCurrentManagedThreadStack(LogGlobalReferenceMessages));
base.DeleteWeakGlobalReference(ref reference);
}
public override void DestroyGenericArgumentState(object value, ref JniValueMarshalerState state, ParameterAttributes synchronize)
{
var vm = state.Extra as JniValueMarshaler;
if (vm != null)
{
vm.DestroyArgumentState(value, ref state, synchronize);
return;
}
var r = state.ReferenceValue;
JniObjectReference.Dispose(ref r);
state = new JniValueMarshalerState();
}
static void DeletedReference(TextWriter?writer, string kind, int count, JniObjectReference reference, JniRuntime runtime)
{
if (writer == null)
{
return;
}
string message = $"{kind} {count} handle {reference.ToString ()} " +
$"from thread '{runtime.GetCurrentManagedThreadName ()}'({Environment.CurrentManagedThreadId})" +
Environment.NewLine +
runtime.GetCurrentManagedThreadStackTrace(skipFrames: 2, fNeedFileInfo: true);
writer.WriteLine(message);
writer.Flush();
}
public virtual void DeleteLocalReference(ref JniObjectReference reference, ref int localReferenceCount)
{
if (!reference.IsValid)
{
return;
}
AssertReferenceType(ref reference, JniObjectReferenceType.Local);
localReferenceCount--;
if (localReferenceCount < 0)
{
AssertCount(localReferenceCount, "LREF", reference.ToString());
}
JniEnvironment.References.DeleteLocalRef(reference.Handle);
reference.Invalidate();
}
public override IntPtr ReleaseLocalReference(ref JniObjectReference reference, ref int localReferenceCount)
{
if (!reference.IsValid)
{
return(IntPtr.Zero);
}
NativeMethods.java_interop_gc_bridge_lref_log_delete(bridge,
localReferenceCount,
reference.Handle,
ToByte(reference.Type),
GetCurrentManagedThreadName(LogLocalReferenceMessages),
Environment.CurrentManagedThreadId,
GetCurrentManagedThreadStack(LogLocalReferenceMessages));
return(base.ReleaseLocalReference(ref reference, ref localReferenceCount));
}
public static JniType?GetTypeFromInstance(JniObjectReference instance)
{
if (!instance.IsValid)
{
return(null);
}
var lref = JniEnvironment.Types.GetObjectClass(instance);
if (lref.IsValid)
{
return(new JniType(ref lref, JniObjectReferenceOptions.CopyAndDispose));
}
return(null);
}
public static unsafe JniType DefineClass(string name, JniObjectReference loader, byte[] classFileData)
{
if (classFileData == null)
{
return(null);
fixed(byte *buf = classFileData)
{
var lref = JniEnvironment.Types.DefineClass(name, loader, (IntPtr)buf, classFileData.Length);
return(new JniType(ref lref, JniObjectReferenceOptions.CopyAndDispose));
}
}
bool registered;
JniObjectReference peerReference;
public virtual IntPtr ReleaseLocalReference(ref JniObjectReference reference, ref int localReferenceCount)
{
if (!reference.IsValid)
{
return(IntPtr.Zero);
}
localReferenceCount--;
if (localReferenceCount < 0)
{
AssertCount(localReferenceCount, "LREF", reference.ToString());
}
var h = reference.Handle;
reference.Invalidate();
return(h);
}
public static void CreatedReference(JniObjectReference value)
{
if (!value.IsValid)
{
return;
}
switch (value.Type)
{
case JniObjectReferenceType.Local:
Runtime.ObjectReferenceManager.CreatedLocalReference(CurrentInfo, value);
break;
default:
throw new ArgumentException("Only JNI Local References are currently supported.", nameof(value));
}
}
public void Dispose()
{
if (!PeerReference.IsValid)
{
return;
}
if (registered)
{
JniEnvironment.Runtime.UnTrack(PeerReference.Handle);
}
if (methods != null)
{
UnregisterNativeMethods();
}
JniObjectReference.Dispose(ref peerReference);
}
public static string?GetJniTypeNameFromInstance(JniObjectReference instance)
{
if (!instance.IsValid)
{
return(null);
}
var lref = GetObjectClass(instance);
try {
return(GetJniTypeNameFromClass(lref));
}
finally {
JniObjectReference.Dispose(ref lref, JniObjectReferenceOptions.CopyAndDispose);
}
}
public unsafe JavaException(string message, Exception innerException)
: base(message, innerException)
{
const string signature = "(Ljava/lang/String;)V";
var native_message = JniEnvironment.Strings.NewString(message);
try {
var args = stackalloc JniArgumentValue [1];
args [0] = new JniArgumentValue(native_message);
var peer = JniPeerMembers.InstanceMethods.StartCreateInstance(signature, GetType(), args);
Construct(ref peer, JniObjectReferenceOptions.CopyAndDispose);
JniPeerMembers.InstanceMethods.FinishCreateInstance(signature, this, args);
} finally {
JniObjectReference.Dispose(ref native_message, JniObjectReferenceOptions.CopyAndDispose);
}
javaStackTrace = _GetJavaStack(PeerReference);
}
public override void CreatedLocalReference(JniObjectReference reference, ref int localReferenceCount)
{
if (!reference.IsValid)
{
return;
}
base.CreatedLocalReference(reference, ref localReferenceCount);
NativeMethods.java_interop_gc_bridge_lref_log_new(bridge,
localReferenceCount,
reference.Handle,
ToByte(reference.Type),
IntPtr.Zero,
(byte)0,
GetCurrentManagedThreadName(LogLocalReferenceMessages),
Environment.CurrentManagedThreadId,
GetCurrentManagedThreadStack(LogLocalReferenceMessages));
}
protected void SetPeerReference(ref JniObjectReference reference, JniObjectReferenceOptions options)
{
if (options == JniObjectReferenceOptions.None)
{
((IJavaPeerable)this).SetPeerReference(new JniObjectReference());
return;
}
#if FEATURE_JNIOBJECTREFERENCE_SAFEHANDLES
this.reference = reference;
#endif // FEATURE_JNIOBJECTREFERENCE_SAFEHANDLES
#if FEATURE_JNIOBJECTREFERENCE_INTPTRS
this.handle = reference.Handle;
this.handle_type = reference.Type;
#endif // FEATURE_JNIOBJECTREFERENCE_INTPTRS
JniObjectReference.Dispose(ref reference, options);
}
public override JniObjectReference CreateWeakGlobalReference(JniObjectReference reference)
{
if (!reference.IsValid)
{
return(reference);
}
var n = base.CreateWeakGlobalReference(reference);
NativeMethods.java_interop_gc_bridge_weak_gref_log_new(bridge,
reference.Handle,
ToByte(reference.Type),
n.Handle,
ToByte(n.Type),
GetCurrentManagedThreadName(LogGlobalReferenceMessages),
Environment.CurrentManagedThreadId,
GetCurrentManagedThreadStack(LogGlobalReferenceMessages));
return(n);
}
public override void ActivatePeer(IJavaPeerable?self, JniObjectReference reference, ConstructorInfo cinfo, object?[]?argumentValues)
{
var runtime = JniEnvironment.Runtime;
try {
var f = runtime.MarshalMemberBuilder.CreateConstructActivationPeerFunc(cinfo);
f(cinfo, reference, argumentValues);
} catch (Exception e) {
var m = string.Format("Could not activate {{ PeerReference={0} IdentityHashCode=0x{1} Java.Type={2} }} for managed type '{3}'.",
reference,
runtime.ValueManager.GetJniIdentityHashCode(reference).ToString("x"),
JniEnvironment.Types.GetJniTypeNameFromInstance(reference),
cinfo.DeclaringType.FullName);
Debug.WriteLine(m);
throw new NotSupportedException(m, e);
}
}
public static void ThrowNew(JniObjectReference klass, string message)
{
if (!klass.IsValid)
{
throw new ArgumentException(nameof(klass));
}
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
int r = _ThrowNew(klass, message);
if (r != 0)
{
throw new InvalidOperationException(string.Format("Could not raise an exception; JNIEnv::ThrowNew() returned {0}.", r));
}
}
public override IJavaPeerable?PeekPeer(JniObjectReference reference)
{
if (RegisteredInstances == null)
{
throw new ObjectDisposedException(nameof(MonoRuntimeValueManager));
}
if (!reference.IsValid)
{
return(null);
}
int key = GetJniIdentityHashCode(reference);
lock (RegisteredInstances) {
List <WeakReference <IJavaPeerable> > peers;
if (!RegisteredInstances.TryGetValue(key, out peers))
{
return(null);
}
for (int i = peers.Count - 1; i >= 0; i--)
{
var wp = peers [i];
IJavaPeerable p;
if (!wp.TryGetTarget(out p))
{
// Peer was collected
peers.RemoveAt(i);
continue;
}
if (JniEnvironment.Types.IsSameObject(reference, p.PeerReference))
{
return(p);
}
}
if (peers.Count == 0)
{
RegisteredInstances.Remove(key);
}
}
return(null);
}
static bool Equals(IntPtr jnienv, IntPtr n_self, IntPtr n_value)
{
var envp = new JniTransition(jnienv);
try {
var self = (JavaProxyObject?)JniEnvironment.Runtime.ValueManager.PeekPeer(new JniObjectReference(n_self));
var r_value = new JniObjectReference(n_value);
var value = JniEnvironment.Runtime.ValueManager.GetValue(ref r_value, JniObjectReferenceOptions.Copy);
return(self?.Equals(value) ?? false);
}
catch (Exception e) when(JniEnvironment.Runtime.ExceptionShouldTransitionToJni(e))
{
envp.SetPendingException(e);
return(false);
}
finally {
envp.Dispose();
}
}
internal static void DeleteLocalReference(JniLocalReference value, IntPtr handle)
{
var localRefs = Info.Value.LocalReferences;
var c = localRefs.FirstOrDefault(r => r.Contains(value));
if (c == null)
{
Runtime.ObjectReferenceManager.WriteLocalReferenceLine(
"Deleting JNI local reference handle 0x{0} from wrong thread {1}! Ignoring...",
handle.ToString("x"), Runtime.GetCurrentThreadDescription());
Runtime.ObjectReferenceManager.WriteLocalReferenceLine("{0}",
System.Activator.CreateInstance(Type.GetType("System.Diagnostics.StackTrace")));
return;
}
c.Remove(value);
var lref = new JniObjectReference(value, JniObjectReferenceType.Local);
Runtime.ObjectReferenceManager.DeleteLocalReference(Info.Value, ref lref);
value.SetHandleAsInvalid();
}
public object PeekValue(JniObjectReference reference)
{
if (!reference.IsValid)
{
return(null);
}
var t = PeekPeer(reference);
if (t == null)
{
return(t);
}
object r;
return(TryUnboxObject(t, out r)
? r
: t);
}
public override JniObjectReference CreateLocalReference(JniObjectReference reference, ref int localReferenceCount)
{
if (!reference.IsValid)
{
return(reference);
}
var r = base.CreateLocalReference(reference, ref localReferenceCount);
NativeMethods.java_interop_gc_bridge_lref_log_new(bridge,
localReferenceCount,
reference.Handle,
ToByte(reference.Type),
r.Handle,
ToByte(r.Type),
GetCurrentManagedThreadName(LogLocalReferenceMessages),
Environment.CurrentManagedThreadId,
GetCurrentManagedThreadStack(LogLocalReferenceMessages));
return(r);
}
public T CreateValue <T> (ref JniObjectReference reference, JniObjectReferenceOptions options, Type targetType = null)
{
if (disposed)
{
throw new ObjectDisposedException(GetType().Name);
}
if (!reference.IsValid)
{
return(default(T));
}
if (targetType != null && !typeof(T).GetTypeInfo().IsAssignableFrom(targetType.GetTypeInfo()))
{
throw new ArgumentException(
string.Format("Requested runtime '{0}' value of '{1}' is not compatible with requested compile-time type T of '{2}'.",
nameof(targetType),
targetType,
typeof(T)),
nameof(targetType));
}
var boxed = PeekBoxedObject(reference);
if (boxed != null)
{
JniObjectReference.Dispose(ref reference, options);
return((T)Convert.ChangeType(boxed, targetType ?? typeof(T)));
}
targetType = targetType ?? typeof(T);
if (typeof(IJavaPeerable).GetTypeInfo().IsAssignableFrom(targetType.GetTypeInfo()))
{
return((T)JavaPeerableValueMarshaler.Instance.CreateGenericValue(ref reference, options, targetType));
}
var marshaler = GetValueMarshaler <T> ();
return(marshaler.CreateGenericValue(ref reference, options, targetType));
}
