public static Dictionary<string, string> RetrieveAll(JniEnvironment environment)
{
Dictionary<string, string> properties = new Dictionary<string,string>();
JniLocalFrame frame = environment.CreateLocalFrame(1);
try
{
JniClass systemClazz = JniClass.FindClass(environment, "java/lang/System");
string[] keyNames = GetJavaPropertyNames(environment, systemClazz);
JniMethod getPropMid = systemClazz.GetStaticMethodId(environment, "getProperty", "(Ljava/lang/String;)Ljava/lang/String;");
foreach (string keyName in keyNames)
{
JValue[] paramArray = new JValue[1];
paramArray[0].AssignStringValue(environment, keyName);
try
{
string val = getPropMid.CallStaticStringMethod(environment, paramArray);
properties.Add(keyName, val);
}
finally
{
paramArray[0].Free(environment);
}
}
}
finally
{
frame.SafePop();
}
return properties;
}
public static void CheckException(JniEnvironment environment)
{
if (JniThrowable.ExceptionCheck(environment))
{
ThrowCurrentException(environment);
}
}
internal static void Init(JniEnvironment environment)
{
if (JavaVM.IsLogTypeEnabled(JavaVMLogTypes.RedirectStdOut | JavaVMLogTypes.RedirectStdErr))
{
JniLocalFrame frame = environment.CreateLocalFrame(1);
try
{
JniClass peer = JavaNativeMethodRegistrar.RegisterCounterpartAndReturnPeer(environment,
typeof(JavaStdStreamRedirector));
if (JavaVM.IsLogTypeEnabled(JavaVMLogTypes.RedirectStdOut))
{
HookStream(environment, peer, JavaVMLogTypes.RedirectStdOut, "redirectStdOut");
}
if (JavaVM.IsLogTypeEnabled(JavaVMLogTypes.RedirectStdErr))
{
HookStream(environment, peer, JavaVMLogTypes.RedirectStdErr, "redirectStdErr");
}
}
finally
{
frame.SafePop();
}
}
}
internal JniThreadMonitor(JniEnvironment env, JniObject objectHandle)
{
JniObject.VerifyInputJniObject(objectHandle);
mEnvironment = env;
mObjectHandle = objectHandle;
Enter();
}
public static void LogBannerProperties(JniEnvironment environment)
{
Dictionary<string, string> properties = RetrieveAll(environment);
JavaVM.Log("Current Java System Properties");
string[] logPropNames = {
"java.version",
"java.vendor",
"java.home",
"java.vm.version",
"java.vm.vendor",
"java.vm.name",
"java.class.version",
"java.class.path",
"java.library.path",
"os.name",
"os.arch",
"os.version",
"user.name",
};
foreach (string logPropName in logPropNames)
{
JavaVM.Log(logPropName + " = " + properties[logPropName]);
}
}
public static string ExtractStringFromHandle(JniEnvironment environment, IntPtr handle)
{
VerifyEnvironment(environment);
unsafe
{
int length = GetStringLengthCore(environment, handle);
char* p = JniEnvironment.Functions.GetStringCritical(environment.Handle, handle, null);
if (p == null)
{
JniThrowable.ThrowCurrentException(environment);
}
try
{
// IMPORTANT - do not change code between GetStringCritical/ReleaseStringCritical.
// See JNI documentation.
return new String(p, 0, length);
}
finally
{
JniEnvironment.Functions.ReleaseStringCritical(environment.Handle, handle, p);
// EXCEPTION CHECK: Do nothing, this method safe to call while exception is pending, does
// not raise additional exceptions.
}
}
}
public static bool ExceptionCheck(JniEnvironment environment)
{
byte result = JniEnvironment.Functions.ExceptionCheck(environment.Handle);
// EXCEPTION CHECK: Do nothing, this method safe to call while exception is pending, does
// not raise additional exceptions.
return JBooleanConverter.From(result);
}
private static void HookStream(JniEnvironment environment, JniClass nativeClazz,
JavaVMLogTypes hook, string javaHookMethod)
{
JniMethod outMid = nativeClazz.GetStaticMethodId(environment, javaHookMethod, "(I)V");
JValue[] paramArray = new JValue[1];
paramArray[0].AssignIntValue((int)hook);
outMid.CallStaticVoidMethod(environment, paramArray);
}
public static JniLongArray PackLongArray(JniEnvironment environment, long[] sourceArray)
{
VerifyEnvironment(environment);
if (sourceArray == null) { return null; }
JniLongArray arrayHandle = NewLongArray(environment, sourceArray.Length);
if (sourceArray.Length > 0)
{
arrayHandle.PackPrimitiveArray<long>(environment, sourceArray);
}
return arrayHandle;
}
public static JniIntArray PackIntArray(JniEnvironment environment, int[] sourceArray)
{
VerifyEnvironment(environment);
if (sourceArray == null) { return null; }
JniIntArray arrayHandle = NewIntArray(environment, sourceArray.Length);
if (sourceArray.Length > 0)
{
arrayHandle.PackPrimitiveArray<int>(environment, sourceArray);
}
return arrayHandle;
}
public static JniCharArray PackCharArray(JniEnvironment environment, char[] sourceArray)
{
VerifyEnvironment(environment);
if (sourceArray == null) { return null; }
JniCharArray arrayHandle = NewCharArray(environment, sourceArray.Length);
if (sourceArray.Length > 0)
{
arrayHandle.PackPrimitiveArray<char>(environment, sourceArray);
}
return arrayHandle;
}
public static JniByteArray PackByteArray(JniEnvironment environment, byte[] sourceArray)
{
VerifyEnvironment(environment);
if (sourceArray == null) { return null; }
JniByteArray arrayHandle = NewByteArray(environment, sourceArray.Length);
if (sourceArray.Length > 0)
{
arrayHandle.PackPrimitiveArray<byte>(environment, sourceArray);
}
return arrayHandle;
}
internal JniClass(JniEnvironment environment, IntPtr handle, JniObjectLifecycle lifecycle)
: base(environment, handle, lifecycle)
{
// TODO - make this instance global???
if (!mStaticsInitialized)
{
mStaticsInitialized = true;
JniClass localClassClass = this.GetObjectClass(environment);
// NOTE: no need to NewGlobalRef class handle for java.lang.Class, will not be unloaded
mGetNameMid = localClassClass.GetMethodId(environment, "getName", "()Ljava/lang/String;");
}
}
public JniObject NewObjectCore(JniEnvironment environment, JValue[] arguments, JniConcreteObjectType concreteType)
{
VerifyEnvironment(environment);
// NOTE: OK if "JValue[] arguments" is null
IntPtr result = JniEnvironment.Functions.NewObjectA(environment.Handle, this.DeclaringClass.Handle, this.Handle, arguments);
if (IntPtr.Zero == result)
{
JniThrowable.ThrowCurrentException(environment); // null result means an exception occurred
}
// EXCEPTION CHECK: Do nothing, already checked for exception above.
return JniObject.CreateObjectOfType(environment, result, concreteType);
}
public double GetDoubleField(
JniEnvironment environment,
JniObject jniObject)
{
VerifyReturnType(JniType.Double);
VerifyEnvironment(environment);
VerifyNotStatic();
VerifyInputJniObject(jniObject);
double result = JniEnvironment.Functions.GetDoubleField(environment.Handle, jniObject.Handle, this.Handle);
JniThrowable.CheckException(environment);
return result;
}
public bool GetBooleanField(
JniEnvironment environment,
JniObject jniObject)
{
VerifyReturnType(JniType.Boolean);
VerifyEnvironment(environment);
VerifyNotStatic();
VerifyInputJniObject(jniObject);
byte result = JniEnvironment.Functions.GetBooleanField(environment.Handle, jniObject.Handle, this.Handle);
JniThrowable.CheckException(environment);
return JBooleanConverter.From(result);
}
public byte[] GetByteArrayRegion(
JniEnvironment environment,
int start,
int length
)
{
VerifyEnvironment(environment);
byte[] result = new byte[length];
JniEnvironment.Functions.GetByteArrayRegion(environment.Handle, this.Handle, start, length, result);
JniThrowable.CheckException(environment);
return result;
}
public JniEnvironment FromHandle(IntPtr environmentHandle)
{
lock (mMapEnvironments)
{
JniEnvironment env = FromHandleCore(environmentHandle);
if (env == null)
{
env = new JniEnvironment(false, environmentHandle, CurrentUnmanagedThreadId);
AddEnvironment(env);
}
return env;
}
}
public static bool IsAssignableFrom(
JniEnvironment environment,
JniClass subclass,
JniClass superclass
)
{
VerifyEnvironment(environment);
VerifyInputJniObject(subclass);
VerifyInputJniObject(superclass);
byte result = JniEnvironment.Functions.IsAssignableFrom(environment.Handle, subclass.Handle, superclass.Handle);
JniThrowable.CheckException(environment);
return JBooleanConverter.From(result);
}
public static JniBooleanArray NewBooleanArray(
JniEnvironment environment,
int length)
{
VerifyEnvironment(environment);
IntPtr result = JniEnvironment.Functions.NewBooleanArray(environment.Handle, length);
if (IntPtr.Zero == result)
{
JniThrowable.ThrowCurrentException(environment); // null result means an exception occurred
}
// EXCEPTION CHECK: Do nothing, already checked for exception above.
return new JniBooleanArray(environment, result, JniObjectLifecycle.Local);
}
internal static void RegisterCounterpart(JniEnvironment environment, Type counterpartType)
{
JniLocalFrame frame = environment.CreateLocalFrame(1);
try
{
JniClass peer = GetJavaPeer(environment, counterpartType);
RegisterCounterpart(environment, peer, counterpartType);
}
finally
{
frame.SafePop();
}
}
public static void CheckErrorCode(JniEnvironment environment, int code)
{
if (code == (int)JniErrorCode.Ok)
{
return;
}
if (environment == null)
{
throw new JniException("TODO");
}
// Some error codes may be accompanied with Java Exceptions
JniThrowable.CheckException(environment);
HandleBadErrorCode(code);
}
public static JniClass FindClass(
JniEnvironment environment,
string name
)
{
VerifyEnvironment(environment);
IntPtr result = JniEnvironment.Functions.FindClass(environment.Handle, name);
if (IntPtr.Zero == result)
{
JniThrowable.ThrowCurrentException(environment); // null result means an exception occurred
}
// EXCEPTION CHECK: Do nothing, already checked for exception above.
return new JniClass(environment, result, JniObjectLifecycle.Local);
}
internal static JniClass GetJavaPeer(JniEnvironment environment, Type counterpartType)
{
string peerClassName = FindJavaPeerClassName(counterpartType);
JniLocalFrame frame = environment.CreateLocalFrame(1);
try
{
JniClass peer = JniClass.FindClass(environment, JniClass.ToJniClassName(peerClassName));
return frame.Pop(peer) as JniClass;
}
finally
{
frame.SafePop();
}
}
public static void ThrowNewToJavaVM(
JniEnvironment environment,
JniClass jniClass,
string message
)
{
VerifyInputJniObject(jniClass);
int result = JniEnvironment.Functions.ThrowNew(environment.Handle, jniClass.Handle, message);
if (0 != result)
{
JniException.CheckErrorCode(environment, result);
}
// EXCEPTION CHECK: Do nothing, already checked for exception above.
}
public bool CallBooleanMethod(
JniEnvironment environment,
JniObject jniObject,
JValue[] arguments
)
{
VerifyReturnType(JniType.Boolean);
VerifyEnvironment(environment);
VerifyNotStatic();
VerifyInputJniObject(jniObject);
// NOTE: OK if "JValue[] arguments" is null
byte result = JniEnvironment.Functions.CallBooleanMethodA(environment.Handle, jniObject.Handle, this.Handle, arguments);
JniThrowable.CheckException(environment);
return JBooleanConverter.From(result);
}
public double CallDoubleMethod(
JniEnvironment environment,
JniObject jniObject,
JValue[] arguments
)
{
VerifyReturnType(JniType.Double);
VerifyEnvironment(environment);
VerifyNotStatic();
VerifyInputJniObject(jniObject);
// NOTE: OK if "JValue[] arguments" is null
double result = JniEnvironment.Functions.CallDoubleMethodA(environment.Handle, jniObject.Handle, this.Handle, arguments);
JniThrowable.CheckException(environment);
return result;
}
public bool[] GetBooleanArrayRegion(
JniEnvironment environment,
int start,
int length)
{
VerifyEnvironment(environment);
byte[] result = new byte[length];
JniEnvironment.Functions.GetBooleanArrayRegion(environment.Handle, this.Handle, start, length, result);
JniThrowable.CheckException(environment);
bool[] boolArray = new bool[result.Length];
for (int i = 0; i < result.Length; i++)
{
boolArray[i] = JBooleanConverter.From(result[i]);
}
return boolArray;
}
public static JniObjectArray NewObjectArray(
JniEnvironment environment,
int length,
JniClass jniClass,
JniObject init
)
{
VerifyEnvironment(environment);
VerifyInputJniObject(jniClass);
IntPtr safeInit = (init == null) ? IntPtr.Zero : init.Handle; // OK if initial value is null
IntPtr result = JniEnvironment.Functions.NewObjectArray(environment.Handle, length, jniClass.Handle, safeInit);
if (IntPtr.Zero == result)
{
JniThrowable.ThrowCurrentException(environment); // null result means an exception occurred
}
// EXCEPTION CHECK: Do nothing, already checked for exception above.
return new JniObjectArray(environment, result, JniObjectLifecycle.Local, -1, JniType.Null);
}
public static string[] ExtractStringArray(JniEnvironment environment, JniObjectArray objectArray)
{
VerifyEnvironment(environment);
VerifyInputJniObject(objectArray);
int length = objectArray.GetArrayLength(environment);
string[] output = new string[length];
JniLocalFrame frame = environment.CreateLocalFrame(length);
try
{
for (int i = 0; i < length; i++)
{
JniObject o = objectArray.GetObjectArrayElement(environment, i);
output[i] = (o == null) ? null : o.ExtractStringValue(environment);
}
}
finally
{
frame.SafePop();
}
return output;
}
