internal static void AssertSelf(IJavaPeerable self)
{
if (self == null)
{
throw new ArgumentNullException(nameof(self));
}
var peer = self.PeerReference;
if (!peer.IsValid)
{
throw new ObjectDisposedException(self.GetType().FullName);
}
#if FEATURE_JNIOBJECTREFERENCE_SAFEHANDLES
var lref = peer.SafeHandle as JniLocalReference;
if (lref != null && !JniEnvironment.IsHandleValid(lref))
{
var t = self.GetType().FullName;
throw new NotSupportedException(
"You've created a " + t + " in one thread and are using it " +
"from another thread without calling IJavaPeerable.Register(). " +
"Passing JNI local references between threads is not supported; " +
"call IJavaObject.RegisterWithVM() if sharing between threads is required.");
}
#endif // FEATURE_JNIOBJECTREFERENCE_SAFEHANDLES
}
void Dispose(JniObjectReference h, IJavaPeerable value)
{
value.Disposed();
Remove(value);
var o = Runtime.ObjectReferenceManager;
if (o.LogGlobalReferenceMessages)
{
o.WriteGlobalReferenceLine("Disposing PeerReference={0} IdentityHashCode=0x{1} Instance=0x{2} Instance.Type={3} Java.Type={4}",
h.ToString(),
value.JniIdentityHashCode.ToString("x"),
RuntimeHelpers.GetHashCode(value).ToString("x"),
value.GetType().ToString(),
JniEnvironment.Types.GetJniTypeNameFromInstance(h));
}
#if FEATURE_JNIOBJECTREFERENCE_SAFEHANDLES
var lref = value.PeerReference.SafeHandle as JniLocalReference;
if (lref != null && !JniEnvironment.IsHandleValid(lref))
{
// `lref` was created on another thread, and CANNOT be disposed on this thread.
// Just invalidate the reference and move on.
lref.SetHandleAsInvalid();
}
#endif // FEATURE_JNIOBJECTREFERENCE_SAFEHANDLES
JniObjectReference.Dispose(ref h);
value.SetPeerReference(new JniObjectReference());
GC.SuppressFinalize(value);
}
public JniTransition(IntPtr environmentPointer)
{
disposed = false;
pendingException = null;
JniEnvironment.SetEnvironmentPointer(environmentPointer);
#if FEATURE_JNIENVIRONMENT_SAFEHANDLES
JniEnvironment.PushLocalReferenceFrame();
#endif // FEATURE_JNIENVIRONMENT_SAFEHANDLES
}
internal static Exception?GetExceptionForLastThrowable(IntPtr thrown)
{
if (thrown == IntPtr.Zero)
{
return(null);
}
var e = new JniObjectReference(thrown, JniObjectReferenceType.Local);
// JniEnvironment.Errors.ExceptionDescribe ();
JniEnvironment.Exceptions.ExceptionClear();
JniEnvironment.LogCreateLocalRef(e);
return(Runtime.GetExceptionForThrowable(ref e, JniObjectReferenceOptions.CopyAndDispose));
}
internal static Exception?GetExceptionForLastThrowable()
{
var e = JniEnvironment.Exceptions.ExceptionOccurred();
if (!e.IsValid)
{
return(null);
}
// JniEnvironment.Errors.ExceptionDescribe ();
JniEnvironment.Exceptions.ExceptionClear();
JniEnvironment.LogCreateLocalRef(e);
return(Runtime.GetExceptionForThrowable(ref e, JniObjectReferenceOptions.CopyAndDispose));
}
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 void Dispose()
{
if (disposed)
{
return;
}
disposed = true;
if (pendingException != null)
{
JniEnvironment.Runtime.RaisePendingException(pendingException);
pendingException = null;
}
#if FEATURE_JNIENVIRONMENT_SAFEHANDLES
JniEnvironment.PopLocalReferenceFrame();
#endif // FEATURE_JNIENVIRONMENT_SAFEHANDLES
}
public static void PushLocalFrame(int capacity)
{
int r = _PushLocalFrame(capacity);
if (r == 0)
{
return;
}
var e = JniEnvironment.GetExceptionForLastThrowable();
if (e != null)
{
ExceptionDispatchInfo.Capture(e).Throw();
}
throw new InvalidOperationException(string.Format("Could not push a frame; JNIEnv::PushLocalFrame() returned {0}.", r));
}
internal JniLocalReference()
{
JniEnvironment.AddLocalReference(this);
}
protected override bool ReleaseHandle()
{
JniEnvironment.DeleteLocalReference(this, handle);
return(true);
}
public static unsafe JniObjectReference FindClass(string classname)
{
if (classname == null)
{
throw new ArgumentNullException("classname");
}
if (classname.Length == 0)
{
throw new ArgumentException("'classname' cannot be a zero-length string.", nameof(classname));
}
var info = JniEnvironment.CurrentInfo;
#if FEATURE_JNIENVIRONMENT_JI_PINVOKES
IntPtr thrown;
var c = NativeMethods.java_interop_jnienv_find_class(info.EnvironmentPointer, out thrown, classname);
if (thrown == IntPtr.Zero)
{
var r = new JniObjectReference(c, JniObjectReferenceType.Local);
JniEnvironment.LogCreateLocalRef(r);
return(r);
}
NativeMethods.java_interop_jnienv_exception_clear(info.EnvironmentPointer);
var e = new JniObjectReference(thrown, JniObjectReferenceType.Local);
LogCreateLocalRef(e);
var java = info.ToJavaName(classname);
var __args = stackalloc JniArgumentValue [1];
__args [0] = new JniArgumentValue(java);
IntPtr ignoreThrown;
c = NativeMethods.java_interop_jnienv_call_object_method_a(info.EnvironmentPointer, out ignoreThrown, info.Runtime.ClassLoader.Handle, info.Runtime.ClassLoader_LoadClass.ID, (IntPtr)__args);
JniObjectReference.Dispose(ref java);
if (ignoreThrown == IntPtr.Zero)
{
JniObjectReference.Dispose(ref e);
var r = new JniObjectReference(c, JniObjectReferenceType.Local);
JniEnvironment.LogCreateLocalRef(r);
return(r);
}
NativeMethods.java_interop_jnienv_exception_clear(info.EnvironmentPointer);
NativeMethods.java_interop_jnienv_delete_local_ref(info.EnvironmentPointer, ignoreThrown);
throw info.Runtime.GetExceptionForThrowable(ref e, JniObjectReferenceOptions.CopyAndDispose);
#endif // !FEATURE_JNIENVIRONMENT_JI_PINVOKES
#if FEATURE_JNIOBJECTREFERENCE_SAFEHANDLES
var c = info.Invoker.FindClass(info.EnvironmentPointer, classname);
var thrown = info.Invoker.ExceptionOccurred(info.EnvironmentPointer);
if (thrown.IsInvalid)
{
JniEnvironment.LogCreateLocalRef(c);
return(new JniObjectReference(c, JniObjectReferenceType.Local));
}
info.Invoker.ExceptionClear(info.EnvironmentPointer);
LogCreateLocalRef(thrown);
var java = info.ToJavaName(classname);
var __args = stackalloc JniArgumentValue [1];
__args [0] = new JniArgumentValue(java);
c = info.Invoker.CallObjectMethodA(info.EnvironmentPointer, info.Runtime.ClassLoader.SafeHandle, info.Runtime.ClassLoader_LoadClass.ID, __args);
JniObjectReference.Dispose(ref java);
var ignoreThrown = info.Invoker.ExceptionOccurred(info.EnvironmentPointer);
if (ignoreThrown.IsInvalid)
{
thrown.Dispose();
JniEnvironment.LogCreateLocalRef(c);
return(new JniObjectReference(c, JniObjectReferenceType.Local));
}
info.Invoker.ExceptionClear(info.EnvironmentPointer);
LogCreateLocalRef(ignoreThrown);
ignoreThrown.Dispose();
var e = new JniObjectReference(thrown, JniObjectReferenceType.Local);
throw info.Runtime.GetExceptionForThrowable(ref e, JniObjectReferenceOptions.CopyAndDispose);
#endif // !FEATURE_JNIOBJECTREFERENCE_SAFEHANDLES
}
public static unsafe JniObjectReference FindClass(string classname)
{
if (classname == null)
{
throw new ArgumentNullException(nameof(classname));
}
if (classname.Length == 0)
{
throw new ArgumentException("'classname' cannot be a zero-length string.", nameof(classname));
}
var info = JniEnvironment.CurrentInfo;
#if FEATURE_JNIENVIRONMENT_JI_PINVOKES
IntPtr thrown;
var c = NativeMethods.java_interop_jnienv_find_class(info.EnvironmentPointer, out thrown, classname);
if (thrown == IntPtr.Zero)
{
var r = new JniObjectReference(c, JniObjectReferenceType.Local);
JniEnvironment.LogCreateLocalRef(r);
return(r);
}
// If the Java-side exception stack trace is *lost* a'la 89a5a229,
// change `false` to `true` and rebuild+re-run.
#if false
NativeMethods.java_interop_jnienv_exception_describe(info.EnvironmentPointer);
#endif
NativeMethods.java_interop_jnienv_exception_clear(info.EnvironmentPointer);
var findClassThrown = new JniObjectReference(thrown, JniObjectReferenceType.Local);
LogCreateLocalRef(findClassThrown);
var pendingException = info.Runtime.GetExceptionForThrowable(ref findClassThrown, JniObjectReferenceOptions.CopyAndDispose);
if (info.Runtime.ClassLoader_LoadClass != null)
{
var java = info.ToJavaName(classname);
var __args = stackalloc JniArgumentValue [1];
__args [0] = new JniArgumentValue(java);
c = NativeMethods.java_interop_jnienv_call_object_method_a(info.EnvironmentPointer, out thrown, info.Runtime.ClassLoader.Handle, info.Runtime.ClassLoader_LoadClass.ID, (IntPtr)__args);
JniObjectReference.Dispose(ref java);
if (thrown == IntPtr.Zero)
{
(pendingException as IJavaPeerable)?.Dispose();
var r = new JniObjectReference(c, JniObjectReferenceType.Local);
JniEnvironment.LogCreateLocalRef(r);
return(r);
}
NativeMethods.java_interop_jnienv_exception_clear(info.EnvironmentPointer);
if (pendingException != null)
{
NativeMethods.java_interop_jnienv_delete_local_ref(info.EnvironmentPointer, thrown);
}
else
{
var loadClassThrown = new JniObjectReference(thrown, JniObjectReferenceType.Local);
LogCreateLocalRef(loadClassThrown);
pendingException = info.Runtime.GetExceptionForThrowable(ref loadClassThrown, JniObjectReferenceOptions.CopyAndDispose);
}
}
throw pendingException !;
#endif // !FEATURE_JNIENVIRONMENT_JI_PINVOKES
#if FEATURE_JNIOBJECTREFERENCE_SAFEHANDLES
var c = info.Invoker.FindClass(info.EnvironmentPointer, classname);
var thrown = info.Invoker.ExceptionOccurred(info.EnvironmentPointer);
if (thrown.IsInvalid)
{
JniEnvironment.LogCreateLocalRef(c);
return(new JniObjectReference(c, JniObjectReferenceType.Local));
}
info.Invoker.ExceptionClear(info.EnvironmentPointer);
var findClassThrown = new JniObjectReference(thrown, JniObjectReferenceType.Local);
LogCreateLocalRef(findClassThrown);
var pendingException = info.Runtime.GetExceptionForThrowable(ref findClassThrown, JniObjectReferenceOptions.CopyAndDispose);
var java = info.ToJavaName(classname);
var __args = stackalloc JniArgumentValue [1];
__args [0] = new JniArgumentValue(java);
c = info.Invoker.CallObjectMethodA(info.EnvironmentPointer, info.Runtime.ClassLoader.SafeHandle, info.Runtime.ClassLoader_LoadClass.ID, __args);
JniObjectReference.Dispose(ref java);
thrown = info.Invoker.ExceptionOccurred(info.EnvironmentPointer);
if (ignoreThrown.IsInvalid)
{
(pendingException as IJavaPeerable)?.Dispose();
var r = new JniObjectReference(c, JniObjectReferenceType.Local);
JniEnvironment.LogCreateLocalRef(r);
return(r);
}
info.Invoker.ExceptionClear(info.EnvironmentPointer);
if (pendingException != null)
{
thrown.Dispose();
throw pendingException;
}
var loadClassThrown = new JniObjectReference(thrown, JniObjectReferenceType.Local);
LogCreateLocalRef(loadClassThrown);
pendingException = info.Runtime.GetExceptionForThrowable(ref loadClassThrown, JniObjectReferenceOptions.CopyAndDispose);
throw pendingException !;
#endif // !FEATURE_JNIOBJECTREFERENCE_SAFEHANDLES
}
