private static unsafe void TryExplicitlyCallJni()
{
Console.WriteLine("Part2: Check JNI Calls...");
var vm = JniRuntime.CurrentRuntime;
Console.WriteLine("# JniEnvironment.EnvironmentPointer={0}", JniEnvironment.EnvironmentPointer);
Console.WriteLine("vm.SafeHandle={0}", vm.InvocationPointer);
var t = new JniType("java/lang/Object");
var c = t.GetConstructor("()V");
var o = t.NewObject(c, null);
var m = t.GetInstanceMethod("hashCode", "()I");
int i = JniEnvironment.InstanceMethods.CallIntMethod(o, m);
Console.WriteLine("java.lang.Object={0}", o);
Console.WriteLine("hashcode={0}", i);
JniObjectReference.Dispose(ref o);
t.Dispose();
// var o = JniTypes.FindClass ("java/lang/Object");
/*
* var waitForCreation = new CountdownEvent (1);
* var exitThread = new CountdownEvent (1);
* var t = new Thread (() => {
* var vm2 = new JavaVMBuilder ().CreateJavaVM ();
* waitForCreation.Signal ();
* exitThread.Wait ();
* });
* t.Start ();
* waitForCreation.Wait ();
*/
}
public unsafe void Name()
{
using (var Object_class = new JniType("java/lang/Object"))
using (var Class_class = new JniType("java/lang/Class"))
using (var Method_class = new JniType("java/lang/reflect/Method")) {
var Class_getMethod = Class_class.GetInstanceMethod("getMethod", "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;");
var Method_getReturnType = Method_class.GetInstanceMethod("getReturnType", "()Ljava/lang/Class;");
var hashCode_str = JniEnvironment.Strings.NewString("hashCode");
var emptyArray = JniEnvironment.Arrays.NewObjectArray(0, Class_class.PeerReference, new JniObjectReference());
var getHashcodeMethodArgs = stackalloc JniArgumentValue [2];
getHashcodeMethodArgs [0] = new JniArgumentValue(hashCode_str);
getHashcodeMethodArgs [1] = new JniArgumentValue(emptyArray);
var Object_hashCode = JniEnvironment.InstanceMethods.CallObjectMethod(Object_class.PeerReference, Class_getMethod, getHashcodeMethodArgs);
var Object_hashCode_rt = JniEnvironment.InstanceMethods.CallObjectMethod(Object_hashCode, Method_getReturnType);
try {
Assert.AreEqual("java/lang/Object", Object_class.Name);
using (var t = new JniType(ref Object_hashCode_rt, JniObjectReferenceOptions.Copy))
Assert.AreEqual("I", t.Name);
} finally {
JniObjectReference.Dispose(ref hashCode_str);
JniObjectReference.Dispose(ref Object_hashCode);
JniObjectReference.Dispose(ref Object_hashCode_rt);
JniObjectReference.Dispose(ref emptyArray);
}
}
}
List <JavaConstructorInfo> LookupConstructors()
{
if (Members == null)
{
return(null);
}
lock (Members) {
if (constructors != null || Disposed)
{
return(constructors);
}
constructors = new List <JavaConstructorInfo> ();
var ctors = JniEnvironment.InstanceMethods.CallObjectMethod(Members.JniPeerType.PeerReference, Class_getConstructors);
try {
int len = JniEnvironment.Arrays.GetArrayLength(ctors);
for (int i = 0; i < len; ++i)
{
var ctor = JniEnvironment.Arrays.GetObjectArrayElement(ctors, i);
var m = new JavaConstructorInfo(Members, ctor);
constructors.Add(m);
JniObjectReference.Dispose(ref ctor);
}
} finally {
JniObjectReference.Dispose(ref ctors);
}
return(constructors);
}
}
public unsafe void CallNonvirtualVoidMethod_WithBaseMethodIDAndDerivedType()
{
using (var b = new JniType("com/xamarin/interop/CallNonvirtualBase"))
using (var d = new JniType("com/xamarin/interop/CallNonvirtualDerived")) {
var m = b.GetInstanceMethod("method", "()V");
var f = b.GetInstanceField("methodInvoked", "Z");
var c = d.GetConstructor("()V");
var g = d.GetInstanceField("methodInvoked", "Z");
var o = d.NewObject(c, null);
try {
if (JavaVMFixture.CallNonvirtualVoidMethodSupportsDeclaringClassMismatch)
{
JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(o, d.PeerReference, m);
Assert.IsFalse(JniEnvironment.InstanceFields.GetBooleanField(o, f));
Assert.IsTrue(JniEnvironment.InstanceFields.GetBooleanField(o, g));
}
else
{
JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(o, d.PeerReference, m);
Assert.IsTrue(JniEnvironment.InstanceFields.GetBooleanField(o, f));
Assert.IsFalse(JniEnvironment.InstanceFields.GetBooleanField(o, g));
}
} finally {
JniObjectReference.Dispose(ref o);
}
}
}
static void SetThrowableCause(JniType type, JniObjectReference outer, string message)
{
var cause = CreateThrowable(type, message);
SetThrowableCause(type, outer, cause);
JniObjectReference.Dispose(ref cause);
}
public void References_CreatedReference_LocalRef()
{
var NewLocalRef = GetNewRefFunc("java_interop_jnienv_new_local_ref");
if (NewLocalRef == null)
{
Assert.Ignore("This version of Java.Interop.dll doesn't use P/Invoke-based JNI invokes.");
return;
}
using (var t = new JniType("java/lang/Object")) {
var c = JniEnvironment.LocalReferenceCount;
var r = NewLocalRef(JniEnvironment.EnvironmentPointer, t.PeerReference.Handle);
// This is the "problem": direct use of JNI functions don't contribute to
// our reference count accounting
Assert.AreEqual(c, JniEnvironment.LocalReferenceCount);
var o = new JniObjectReference(r, JniObjectReferenceType.Local);
JniEnvironment.References.CreatedReference(o);
Assert.AreEqual(c + 1, JniEnvironment.LocalReferenceCount);
JniObjectReference.Dispose(ref o);
Assert.AreEqual(c, JniEnvironment.LocalReferenceCount);
}
}
protected override void Dispose(bool disposing)
{
if (!disposing || !PeerReference.IsValid)
{
return;
}
var pr = PeerReference;
JniObjectReference.Dispose(ref pr);
PeerReference = pr;
members = null;
if (arguments == null)
{
return;
}
for (int i = 0; i < arguments.Count; ++i)
{
var a = arguments [i];
JniObjectReference.Dispose(ref a);
arguments [i] = a;
}
arguments = null;
}
static unsafe void SetThrowableCause(JniType type, JniObjectReference outer, JniObjectReference inner)
{
var a = stackalloc JniArgumentValue [1];
a [0] = new JniArgumentValue(inner);
var i = type.GetInstanceMethod("initCause", "(Ljava/lang/Throwable;)Ljava/lang/Throwable;");
var l = JniEnvironment.InstanceMethods.CallObjectMethod(outer, i, a);
JniObjectReference.Dispose(ref l);
}
public override IJavaPeerable?CreatePeer(ref JniObjectReference reference, JniObjectReferenceOptions options, Type?targetType)
{
if (!reference.IsValid)
{
return(null);
}
var peer = Java.Interop.TypeManager.CreateInstance(reference.Handle, JniHandleOwnership.DoNotTransfer, targetType) as IJavaPeerable;
JniObjectReference.Dispose(ref reference, options);
return(peer);
}
public override Exception GetExceptionForThrowable(ref JniObjectReference value, JniObjectReferenceOptions transfer)
{
var throwable = Java.Lang.Object.GetObject <Java.Lang.Throwable>(value.Handle, JniHandleOwnership.DoNotTransfer);
JniObjectReference.Dispose(ref value, transfer);
var p = throwable as JavaProxyThrowable;
if (p != null)
{
return(p.InnerException);
}
return(throwable);
}
public unsafe void IsInstanceOfType()
{
using (var Object_class = new JniType("java/lang/Object"))
using (var String_class = new JniType("java/lang/String")) {
var String_ctor = String_class.GetConstructor("()V");
var s = String_class.NewObject(String_ctor, null);
try {
Assert.IsTrue(Object_class.IsInstanceOfType(s), "java.lang.String IS-NOT-A java.lang.Object?!");
} finally {
JniObjectReference.Dispose(ref s);
}
}
}
static unsafe JniObjectReference CreateThrowable(JniType type, string message)
{
var c = type.GetConstructor("(Ljava/lang/String;)V");
var s = JniEnvironment.Strings.NewString(message);
try {
var args = stackalloc JniArgumentValue [1];
args [0] = new JniArgumentValue(s);
return(type.NewObject(c, args));
} finally {
JniObjectReference.Dispose(ref s);
}
}
public unsafe void Types_IsSameObject()
{
using (var t = new JniType("java/lang/Object")) {
var c = t.GetConstructor("()V");
var o = t.NewObject(c, null);
try {
using (var ot = JniEnvironment.Types.GetTypeFromInstance(o)) {
Assert.IsTrue(JniEnvironment.Types.IsSameObject(t.PeerReference, ot.PeerReference));
}
} finally {
JniObjectReference.Dispose(ref o);
}
}
}
public void PeekValue()
{
JniObjectReference lref;
using (var o = new JavaObject()) {
lref = o.PeerReference.NewLocalRef();
Assert.AreSame(o, JniRuntime.CurrentRuntime.ValueManager.PeekValue(lref));
}
// At this point, the Java-side object is kept alive by `lref`,
// but the wrapper instance has been disposed, and thus should
// be unregistered, and thus unfindable.
Assert.IsNull(JniRuntime.CurrentRuntime.ValueManager.PeekValue(lref));
JniObjectReference.Dispose(ref lref);
}
public static unsafe void Main(string[] args)
{
Console.WriteLine("Hello World!");
try {
var ignore = JniRuntime.CurrentRuntime;
} catch (InvalidOperationException e) {
Console.WriteLine(e);
}
foreach (var h in JniRuntime.GetAvailableInvocationPointers())
{
Console.WriteLine("PRE: GetCreatedJavaVMHandles: {0}", h);
}
Console.WriteLine("Part 2!");
using (var vm = new JreRuntimeOptions().CreateJreVM()) {
Console.WriteLine("# JniEnvironment.EnvironmentPointer={0}", JniEnvironment.EnvironmentPointer);
Console.WriteLine("vm.SafeHandle={0}", vm.InvocationPointer);
var t = new JniType("java/lang/Object");
var c = t.GetConstructor("()V");
var o = t.NewObject(c, null);
var m = t.GetInstanceMethod("hashCode", "()I");
int i = JniEnvironment.InstanceMethods.CallIntMethod(o, m);
Console.WriteLine("java.lang.Object={0}", o);
Console.WriteLine("hashcode={0}", i);
JniObjectReference.Dispose(ref o);
t.Dispose();
// var o = JniTypes.FindClass ("java/lang/Object");
/*
* var waitForCreation = new CountdownEvent (1);
* var exitThread = new CountdownEvent (1);
* var t = new Thread (() => {
* var vm2 = new JavaVMBuilder ().CreateJavaVM ();
* waitForCreation.Signal ();
* exitThread.Wait ();
* });
* t.Start ();
* waitForCreation.Wait ();
*/
foreach (var h in JniRuntime.GetAvailableInvocationPointers())
{
Console.WriteLine("WITHIN: GetCreatedJavaVMs: {0}", h);
}
// exitThread.Signal ();
}
foreach (var h in JniRuntime.GetAvailableInvocationPointers())
{
Console.WriteLine("POST: GetCreatedJavaVMs: {0}", h);
}
}
Dictionary <string, List <JavaMethodInfo> > LookupMethods()
{
if (Members == null)
{
return(null);
}
lock (Members) {
if (this.methods != null || Disposed)
{
return(this.methods);
}
this.methods = new Dictionary <string, List <JavaMethodInfo> > ();
var methods = JniEnvironment.InstanceMethods.CallObjectMethod(Members.JniPeerType.PeerReference, Class_getMethods);
try {
int len = JniEnvironment.Arrays.GetArrayLength(methods);
for (int i = 0; i < len; ++i)
{
var method = JniEnvironment.Arrays.GetObjectArrayElement(methods, i);
var n_name = JniEnvironment.InstanceMethods.CallObjectMethod(method, Method_getName);
var name = JniEnvironment.Strings.ToString(ref n_name, JniObjectReferenceOptions.CopyAndDispose);
var isStatic = IsStatic(method);
List <JavaMethodInfo> overloads;
if (!Methods.TryGetValue(name, out overloads))
{
Methods.Add(name, overloads = new List <JavaMethodInfo> ());
}
var nrt = JniEnvironment.InstanceMethods.CallObjectMethod(method, Method_getReturnType);
var rt = new JniType(ref nrt, JniObjectReferenceOptions.CopyAndDispose);
var m = new JavaMethodInfo(Members, method, name, isStatic)
{
ReturnType = rt,
};
overloads.Add(m);
JniObjectReference.Dispose(ref method);
}
} finally {
JniObjectReference.Dispose(ref methods);
}
return(this.methods);
}
}
Dictionary <string, List <JavaFieldInfo> > LookupFields()
{
if (Members == null)
{
return(null);
}
lock (Members) {
if (this.fields != null || Disposed)
{
return(this.fields);
}
this.fields = new Dictionary <string, List <JavaFieldInfo> > ();
var fields = JniEnvironment.InstanceMethods.CallObjectMethod(Members.JniPeerType.PeerReference, Class_getFields);
try {
int len = JniEnvironment.Arrays.GetArrayLength(fields);
for (int i = 0; i < len; ++i)
{
var field = JniEnvironment.Arrays.GetObjectArrayElement(fields, i);
var n_name = JniEnvironment.InstanceMethods.CallObjectMethod(field, Field_getName);
var name = JniEnvironment.Strings.ToString(ref n_name, JniObjectReferenceOptions.CopyAndDispose);
var isStatic = IsStatic(field);
List <JavaFieldInfo> overloads;
if (!Fields.TryGetValue(name, out overloads))
{
Fields.Add(name, overloads = new List <JavaFieldInfo> ());
}
var n_type = JniEnvironment.InstanceMethods.CallObjectMethod(field, Field_getType);
using (var type = new JniType(ref n_type, JniObjectReferenceOptions.CopyAndDispose)) {
var sig = JniTypeSignature.Parse(type.Name);
overloads.Add(new JavaFieldInfo(Members, name + "." + sig.QualifiedReference, isStatic));
}
JniObjectReference.Dispose(ref field);
}
} finally {
JniObjectReference.Dispose(ref fields);
}
return(this.fields);
}
}
public unsafe void Handles_NewReturnToJniRef()
{
using (var t = new JniType("java/lang/Object")) {
var c = t.GetConstructor("()V");
var o = t.NewObject(c, null);
try {
var n = o.NewLocalRef();
JniObjectReference.Dispose(ref n);
// warning: lref 'leak'
var r = JniEnvironment.References.NewReturnToJniRef(o);
var h = new JniObjectReference(r);
Assert.AreEqual(JniEnvironment.References.GetIdentityHashCode(o), JniEnvironment.References.GetIdentityHashCode(h));
} finally {
JniObjectReference.Dispose(ref o);
}
}
}
static IntPtr GetStringValueHandler(IntPtr jnienv, IntPtr n_self, int value)
{
var r_self = new JniObjectReference(n_self);
var self = JniEnvironment.Runtime.ValueManager.GetValue <TestType>(ref r_self, JniObjectReferenceOptions.CopyAndDoNotRegister);
try {
var s = self.GetStringValue(value);
var r = JniEnvironment.Strings.NewString(s);
try {
return(JniEnvironment.References.NewReturnToJniRef(r));
} finally {
JniObjectReference.Dispose(ref r);
}
} finally {
self.DisposeUnlessReferenced();
}
}
public void UnreferencedInstanceIsCollected()
{
JniObjectReference oldHandle = new JniObjectReference();
WeakReference r = null;
FinalizerHelpers.PerformNoPinAction(() => {
var v = new JavaObject();
oldHandle = v.PeerReference.NewWeakGlobalRef();
r = new WeakReference(v);
});
JniEnvironment.Runtime.ValueManager.CollectPeers();
GC.WaitForPendingFinalizers();
GC.WaitForPendingFinalizers();
Assert.IsFalse(r.IsAlive);
Assert.IsNull(r.Target);
Assert.IsNull(JniRuntime.CurrentRuntime.ValueManager.PeekValue(oldHandle));
JniObjectReference.Dispose(ref oldHandle);
}
private void Dispose(bool disposing)
{
if (!_javaRef.IsValid)
{
return;
}
unsafe
{
// tell Java that we're done with this array
JniEnvironment.Arrays.ReleaseByteArrayElements(_javaRef, (sbyte *)Raw, JniReleaseArrayElementsMode.Default);
}
if (disposing)
{
JniObjectReference.Dispose(ref _javaRef);
}
}
public void UnregisterFromRuntime()
{
int registeredCount = JniRuntime.CurrentRuntime.ValueManager.GetSurfacedPeers().Count;
JniObjectReference l;
JavaObject o;
using (o = new JavaObject()) {
l = o.PeerReference.NewLocalRef();
Assert.AreEqual(JniObjectReferenceType.Global, o.PeerReference.Type);
Assert.AreEqual(registeredCount + 1, JniRuntime.CurrentRuntime.ValueManager.GetSurfacedPeers().Count);
Assert.IsNotNull(JniRuntime.CurrentRuntime.ValueManager.PeekValue(l));
Assert.AreNotSame(l, o.PeerReference);
Assert.AreSame(o, JniRuntime.CurrentRuntime.ValueManager.PeekValue(l));
}
Assert.AreEqual(registeredCount, JniRuntime.CurrentRuntime.ValueManager.GetSurfacedPeers().Count);
Assert.IsNull(JniRuntime.CurrentRuntime.ValueManager.PeekValue(l));
JniObjectReference.Dispose(ref l);
Assert.Throws <ObjectDisposedException> (() => o.UnregisterFromRuntime());
}
unsafe TimeSpan GetJIMethodCallTiming()
{
using (var k = new JniType("java/lang/Object")) {
var c = k.GetConstructor("()V");
var o = k.NewObject(c, null);
var t = k.GetInstanceMethod("toString", "()Ljava/lang/String;");
var sw = Stopwatch.StartNew();
for (int i = 0; i < Unified_ToString_Iterations; ++i)
{
var r = JniEnvironment.InstanceMethods.CallObjectMethod(o, t);
JniObjectReference.Dispose(ref r);
}
sw.Stop();
JniObjectReference.Dispose(ref o);
return(sw.Elapsed);
}
}
public unsafe void Sanity()
{
using (var Integer_class = new JniType("java/lang/Integer")) {
Assert.AreEqual("java/lang/Integer", Integer_class.Name);
var ctor_args = stackalloc JniArgumentValue [1];
ctor_args [0] = new JniArgumentValue(42);
var Integer_ctor = Integer_class.GetConstructor("(I)V");
var Integer_intValue = Integer_class.GetInstanceMethod("intValue", "()I");
var o = Integer_class.NewObject(Integer_ctor, ctor_args);
try {
int v = JniEnvironment.InstanceMethods.CallIntMethod(o, Integer_intValue);
Assert.AreEqual(42, v);
} finally {
JniObjectReference.Dispose(ref o);
}
}
}
public void LookupArguments()
{
if (arguments != null)
{
return;
}
var vm = JniEnvironment.Runtime;
var sb = new StringBuilder();
var mgr = vm.TypeManager;
if (!IsConstructor)
{
sb.Append(Name).Append(".");
}
sb.Append("(");
var parameters = IsConstructor
? JavaClassInfo.GetConstructorParameters(PeerReference)
: JavaClassInfo.GetMethodParameters(PeerReference);
try {
int len = JniEnvironment.Arrays.GetArrayLength(parameters);
arguments = new List <JniObjectReference> (len);
for (int i = 0; i < len; ++i)
{
var p = JniEnvironment.Arrays.GetObjectArrayElement(parameters, i);
try {
var sig = JniTypeSignature.Parse(JniEnvironment.Types.GetJniTypeNameFromClass(p));
sb.Append(sig.QualifiedReference);
arguments.Add(p.NewGlobalRef());
} finally {
JniObjectReference.Dispose(ref p);
}
}
} finally {
JniObjectReference.Dispose(ref parameters);
}
sb.Append(")").Append(JniReturnType);
JniSignature = sb.ToString();
}
static unsafe Bitmap RenderUsingCreateSnapshot(View view, bool skipChildren)
{
if (view.Width <= 0 || view.Height <= 0)
{
Log.Debug(TAG, $"Skipping createSnapshot rendering on view {view}, width or height are <= 0.");
return(null);
}
JniObjectReference o = default(JniObjectReference);
try {
// Invoke the createSnapshot package-private method.
JniArgumentValue *args = stackalloc JniArgumentValue [3];
args [0] = new JniArgumentValue(Bitmap.Config.Argb8888.PeerReference);
args [1] = new JniArgumentValue(0);
args [2] = new JniArgumentValue(skipChildren);
o = JniEnvironment.InstanceMethods.CallObjectMethod(
view.PeerReference,
viewCreateSnapshot.Value,
args);
if (o.IsValid)
{
return(Java.Lang.Object.GetObject <Bitmap> (
o.Handle,
JniHandleOwnership.DoNotTransfer));
}
return(null);
} catch (Exception e) {
Log.Debug(TAG, $"CreateSnapshot failed: {e.Message}.");
return(null);
} finally {
JniObjectReference.Dispose(ref o);
}
}
public override Exception?GetExceptionForThrowable(ref JniObjectReference reference, JniObjectReferenceOptions options)
{
if (!reference.IsValid)
{
return(null);
}
var peeked = JNIEnv.AndroidValueManager?.PeekPeer(reference);
var peekedExc = peeked as Exception;
if (peekedExc == null)
{
var throwable = Java.Lang.Object.GetObject <Java.Lang.Throwable> (reference.Handle, JniHandleOwnership.DoNotTransfer);
JniObjectReference.Dispose(ref reference, options);
return(throwable);
}
JniObjectReference.Dispose(ref reference, options);
var unwrapped = JNIEnv.AndroidValueManager?.UnboxException(peeked !);
if (unwrapped != null)
{
return(unwrapped);
}
return(peekedExc);
}
public void MethodLookupTiming()
{
#if __ANDROID__
const int count = 100;
#else // __ANDROID__
const int count = 100;
#endif // __ANDROID__
var total = Stopwatch.StartNew();
using (var o = new JavaTiming()) {
var tt = Stopwatch.StartNew();
for (int i = 0; i < count; ++i)
{
var s = o.Timing_ToString_Traditional();
JniObjectReference.Dispose(ref s);
}
tt.Stop();
var ta = Stopwatch.StartNew();
for (int i = 0; i < count; ++i)
{
var s = o.Timing_ToString_NoCache();
JniObjectReference.Dispose(ref s);
}
ta.Stop();
var td = Stopwatch.StartNew();
for (int i = 0; i < count; ++i)
{
var s = o.Timing_ToString_DictWithLock();;
JniObjectReference.Dispose(ref s);
}
td.Stop();
var tc = Stopwatch.StartNew();
for (int i = 0; i < count; ++i)
{
var s = o.Timing_ToString_DictWithNoLock();
JniObjectReference.Dispose(ref s);
}
tc.Stop();
var tp = Stopwatch.StartNew();
for (int i = 0; i < count; ++i)
{
var s = o.Timing_ToString_JniPeerMembers();
JniObjectReference.Dispose(ref s);
}
tp.Stop();
var vtt = Stopwatch.StartNew();
for (int i = 0; i < count; ++i)
{
o.VirtualIntMethod1Args(i);
}
vtt.Stop();
var vti = Stopwatch.StartNew();
for (int i = 0; i < count; ++i)
{
o.Timing_VirtualIntMethod_Marshal1Args(i);
}
vti.Stop();
Console.WriteLine("Method Lookup + Invoke Timing:");
Console.WriteLine("\t Traditional: {0}", tt.Elapsed);
Console.WriteLine("\t No caching: {0}", ta.Elapsed);
Console.WriteLine("\t Dict w/ lock: {0}", td.Elapsed);
Console.WriteLine("\tConcurrentDict: {0}", tc.Elapsed);
Console.WriteLine("\tJniPeerMembers: {0}", tp.Elapsed);
Console.WriteLine();
Console.WriteLine("\t (I)I virtual+traditional: {0}", vtt.Elapsed);
Console.WriteLine("\t (I)I virtual+JniPeerMembers: {0}", vti.Elapsed);
}
using (var o = new DerivedJavaTiming()) {
var ntt = Stopwatch.StartNew();
for (int i = 0; i < count; ++i)
{
o.VirtualIntMethod1Args(i);
}
ntt.Stop();
var nti = Stopwatch.StartNew();
for (int i = 0; i < count; ++i)
{
o.Timing_VirtualIntMethod_Marshal1Args(i);
}
nti.Stop();
Console.WriteLine("\t (I)I nonvirtual+traditional: {0}", ntt.Elapsed);
Console.WriteLine("\t(I)I nonvirtual+JniPeerMembers: {0}", nti.Elapsed);
}
total.Stop();
Console.WriteLine("## {0} Timing: {1}", nameof(MethodLookupTiming), total.Elapsed);
}
public void ObjectArrayEnumerationTiming()
{
const int C = 100;
var total = Stopwatch.StartNew();
JniMethodInfo Class_getMethods;
using (var t = new JniType("java/lang/Class")) {
Class_getMethods = t.GetInstanceMethod("getMethods", "()[Ljava/lang/reflect/Method;");
}
JniMethodInfo Method_getName;
JniMethodInfo Method_getParameterTypes;
JniMethodInfo Method_getReturnType;
using (var t = new JniType("java/lang/reflect/Method")) {
Method_getName = t.GetInstanceMethod("getName", "()Ljava/lang/String;");
Method_getParameterTypes = t.GetInstanceMethod("getParameterTypes", "()[Ljava/lang/Class;");
Method_getReturnType = t.GetInstanceMethod("getReturnType", "()Ljava/lang/Class;");
}
Console.WriteLine("# {0}: Method Lookups Timing: {1}", nameof(ObjectArrayEnumerationTiming), total.Elapsed);
var methodHandles = new List <JavaObject> ();
using (var Arrays_class = new JniType("java/util/Arrays")) {
var lrefMethods = JniEnvironment.InstanceMethods.CallObjectMethod(Arrays_class.PeerReference, Class_getMethods);
Console.WriteLine("# {0}: java.util.Arrays.class.getMethods() Timing: {1}", nameof(ObjectArrayEnumerationTiming), total.Elapsed);
var methodsTiming = Stopwatch.StartNew();
using (var methods = new JavaObjectArray <JavaObject> (ref lrefMethods, JniObjectReferenceOptions.Copy)) {
foreach (var method in methods)
{
methodHandles.Add(method);
}
}
methodsTiming.Stop();
Console.WriteLine("# methodHandles(JavaObjectArray<JavaObject>) creation timing: {0} Count={1}", methodsTiming.Elapsed, methodHandles.Count);
methodsTiming = Stopwatch.StartNew();
var methodHandlesGO = new List <JavaObject> ();
var vm = JniEnvironment.Runtime;
int len = JniEnvironment.Arrays.GetArrayLength(lrefMethods);
for (int i = 0; i < len; ++i)
{
var v = JniEnvironment.Arrays.GetObjectArrayElement(lrefMethods, i);
methodHandlesGO.Add(vm.ValueManager.GetValue <JavaObject> (ref v, JniObjectReferenceOptions.CopyAndDoNotRegister));
JniObjectReference.Dispose(ref v);
}
methodsTiming.Stop();
Console.WriteLine("# methodHandles(JavaVM.GetObject) creation timing: {0} Count={1}", methodsTiming.Elapsed, methodHandles.Count);
foreach (var h in methodHandlesGO)
{
h.DisposeUnlessReferenced();
}
methodsTiming = Stopwatch.StartNew();
var methodHandlesAr = new List <JavaObject> ();
len = JniEnvironment.Arrays.GetArrayLength(lrefMethods);
for (int i = 0; i < len; ++i)
{
var v = JniEnvironment.Arrays.GetObjectArrayElement(lrefMethods, i);
methodHandlesAr.Add(new JavaObject(ref v, JniObjectReferenceOptions.CopyAndDoNotRegister));
JniObjectReference.Dispose(ref v);
}
methodsTiming.Stop();
Console.WriteLine("# methodHandles(JavaObject[]) creation timing: {0} Count={1}", methodsTiming.Elapsed, methodHandles.Count);
foreach (var h in methodHandlesAr)
{
h.Dispose();
}
methodsTiming = Stopwatch.StartNew();
var methodHandlesGR = new List <JniObjectReference> ();
len = JniEnvironment.Arrays.GetArrayLength(lrefMethods);
for (int i = 0; i < len; ++i)
{
var v = JniEnvironment.Arrays.GetObjectArrayElement(lrefMethods, i);
methodHandlesGR.Add(v.NewGlobalRef());
JniObjectReference.Dispose(ref v);
}
methodsTiming.Stop();
Console.WriteLine("# methodHandles(JniGlobalReference) creation timing: {0} Count={1}", methodsTiming.Elapsed, methodHandles.Count);
for (int i = 0; i < methodHandlesGR.Count; ++i)
{
var h = methodHandlesGR [i];
JniObjectReference.Dispose(ref h);
methodHandlesGR [i] = h;
}
JniObjectReference.Dispose(ref lrefMethods);
}
// HACK HACK HACK
// This is to workaround an error wherein constructing `pt` (below)
// throws an exception because `h` is NULL, when it really can't be.
// I believe that this is due to the finalizer, which likewise makes
// NO SENSE AT ALL, since `p` should be keeping the handle valid!
// GC.Collect ();
// GC.WaitForPendingFinalizers ();
foreach (var method in methodHandles)
{
var lookupTiming = Stopwatch.StartNew();
var n_name = JniEnvironment.InstanceMethods.CallObjectMethod(method.PeerReference, Method_getName);
var name = JniEnvironment.Strings.ToString(ref n_name, JniObjectReferenceOptions.CopyAndDispose);
var n_rt = JniEnvironment.InstanceMethods.CallObjectMethod(method.PeerReference, Method_getReturnType);
using (var rt = new JniType(ref n_rt, JniObjectReferenceOptions.CopyAndDispose)) {
}
var parameterTiming = Stopwatch.StartNew();
var enumTime = new TimeSpan();
var lrefPs = JniEnvironment.InstanceMethods.CallObjectMethod(method.PeerReference, Method_getParameterTypes);
int len = JniEnvironment.Arrays.GetArrayLength(lrefPs);
var enumSw = Stopwatch.StartNew();
for (int i = 0; i < len; ++i)
{
var p = JniEnvironment.Arrays.GetObjectArrayElement(lrefPs, i);
using (var pt = new JniType(ref p, JniObjectReferenceOptions.Copy)) {
}
JniObjectReference.Dispose(ref p);
}
JniObjectReference.Dispose(ref lrefPs);
enumSw.Stop();
enumTime = enumSw.Elapsed;
parameterTiming.Stop();
Console.WriteLine("## method '{0}' timing: Total={1}; Parameters={2} Parameters.Dispose={3}",
name,
lookupTiming.Elapsed,
enumTime,
parameterTiming.Elapsed);
}
var mhDisposeTiming = Stopwatch.StartNew();
foreach (var method in methodHandles)
{
method.Dispose();
}
mhDisposeTiming.Stop();
Console.WriteLine("# methodHandles -> Dispose() Timing: {0}", mhDisposeTiming.Elapsed);
total.Stop();
Console.WriteLine("## {0} Timing: {1}", nameof(ObjectArrayEnumerationTiming), total.Elapsed);
}
public unsafe void ObjectCreationTiming()
{
const int C = 100;
var total = Stopwatch.StartNew();
Stopwatch allocTime, newObjectTime, newTime, getObjectTime;
using (var Object_class = new JniType("java/lang/Object")) {
var Object_init = Object_class.GetConstructor("()V");
allocTime = Stopwatch.StartNew();
for (int i = 0; i < C; ++i)
{
var h = Object_class.AllocObject();
JniObjectReference.Dispose(ref h);
}
allocTime.Stop();
newObjectTime = Stopwatch.StartNew();
for (int i = 0; i < C; ++i)
{
var h = Object_class.NewObject(Object_init, null);
JniObjectReference.Dispose(ref h);
}
newObjectTime.Stop();
newTime = Stopwatch.StartNew();
var olist = new List <JavaObject> (C);
for (int i = 0; i < C; ++i)
{
olist.Add(new JavaObject());
}
newTime.Stop();
foreach (var o in olist)
{
o.Dispose();
}
var strings = new JavaObjectArray <string> (100);
for (int i = 0; i < 100; ++i)
{
strings [i] = i.ToString();
}
using (strings) {
var vm = JniEnvironment.Runtime;
var rlist = new List <JavaObject> (C);
getObjectTime = Stopwatch.StartNew();
for (int i = 0; i < C; ++i)
{
var h = JniEnvironment.Arrays.GetObjectArrayElement(strings.PeerReference, i);
var o = vm.ValueManager.GetValue <JavaObject> (ref h, JniObjectReferenceOptions.CopyAndDispose);
rlist.Add(o);
}
getObjectTime.Stop();
foreach (var o in rlist)
{
o.DisposeUnlessReferenced();
}
}
}
total.Stop();
Console.WriteLine("## {0} Timing: Total={1} AllocObject={2} NewObject={3} `new JavaObject()`={4} JavaVM.GetObject()={5}",
nameof(ObjectCreationTiming), total.Elapsed, allocTime.Elapsed, newObjectTime.Elapsed, newTime.Elapsed, getObjectTime.Elapsed);
}