org.graalvm.jniutils

Class JNIUtil

java.lang.Object

org.graalvm.jniutils.JNIUtil

public final class JNIUtil
extends Object

Helpers for calling JNI functions.

Method Summary

Modifier and Type	Method and Description
static void	arrayCopy(JNI.JNIEnv jniEnv, boolean[] src, int srcPos, JNI.JBooleanArray dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, byte[] src, int srcPos, JNI.JByteArray dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, char[] src, int srcPos, JNI.JCharArray dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, double[] src, int srcPos, JNI.JDoubleArray dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, float[] src, int srcPos, JNI.JFloatArray dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, int[] src, int srcPos, JNI.JIntArray dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, JNI.JBooleanArray src, int srcPos, boolean[] dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, JNI.JByteArray src, int srcPos, byte[] dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, JNI.JCharArray src, int srcPos, char[] dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, JNI.JDoubleArray src, int srcPos, double[] dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, JNI.JFloatArray src, int srcPos, float[] dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, JNI.JIntArray src, int srcPos, int[] dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, JNI.JLongArray src, int srcPos, long[] dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, JNI.JShortArray src, int srcPos, short[] dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, long[] src, int srcPos, JNI.JLongArray dest, int destPos, int length)
static void	arrayCopy(JNI.JNIEnv jniEnv, short[] src, int srcPos, JNI.JShortArray dest, int destPos, int length)
static JNI.JNIEnv	attachCurrentThread(JNI.JavaVM vm, boolean daemon, String name, JNI.JObject threadGroup) Attaches the current C thread to a Java Thread.
static JNI.JNIEnv	AttachCurrentThread(JNI.JavaVM vm, JNI.JavaVMAttachArgs args)
static JNI.JNIEnv	AttachCurrentThreadAsDaemon(JNI.JavaVM vm, JNI.JavaVMAttachArgs args)
static boolean[]	createArray(JNI.JNIEnv env, JNI.JBooleanArray booleanArray)
static byte[]	createArray(JNI.JNIEnv env, JNI.JByteArray byteArray)
static char[]	createArray(JNI.JNIEnv env, JNI.JCharArray charArray)
static double[]	createArray(JNI.JNIEnv env, JNI.JDoubleArray doubleArray)
static float[]	createArray(JNI.JNIEnv env, JNI.JFloatArray floatArray)
static int[]	createArray(JNI.JNIEnv env, JNI.JIntArray intArray)
static long[]	createArray(JNI.JNIEnv env, JNI.JLongArray longArray)
static short[]	createArray(JNI.JNIEnv env, JNI.JShortArray shortArray)
static JNI.JBooleanArray	createHSArray(JNI.JNIEnv jniEnv, boolean[] a)
static JNI.JByteArray	createHSArray(JNI.JNIEnv jniEnv, byte[] a)
static JNI.JCharArray	createHSArray(JNI.JNIEnv jniEnv, char[] a)
static JNI.JDoubleArray	createHSArray(JNI.JNIEnv jniEnv, double[] a)
static JNI.JFloatArray	createHSArray(JNI.JNIEnv jniEnv, float[] a)
static JNI.JIntArray	createHSArray(JNI.JNIEnv jniEnv, int[] a)
static JNI.JLongArray	createHSArray(JNI.JNIEnv jniEnv, long[] a)
static JNI.JShortArray	createHSArray(JNI.JNIEnv jniEnv, short[] a)
static JNI.JString	createHSString(JNI.JNIEnv env, String string) Creates a String in the HotSpot heap from string.
static String	createString(JNI.JNIEnv env, JNI.JString hsString) Decodes a string in the HotSpot heap to a local String.
static JNI.JClass	DefineClass(JNI.JNIEnv env, org.graalvm.nativeimage.c.type.CCharPointer name, JNI.JObject loader, org.graalvm.nativeimage.c.type.CCharPointer buf, int bufLen)
static void	DeleteGlobalRef(JNI.JNIEnv env, JNI.JObject ref)
static void	DeleteLocalRef(JNI.JNIEnv env, JNI.JObject ref)
static void	DeleteWeakGlobalRef(JNI.JNIEnv env, JNI.JWeak ref)
static boolean	DetachCurrentThread(JNI.JavaVM vm)
static String	encodeFieldSignature(Class<?> type) Creates a JVM field signature as specified in the Sections 4.3.2 of the JVM Specification.
static String	encodeMethodSignature(Class<?> returnType, Class<?>... parameterTypes) Creates a JVM method signature as specified in the Sections 4.3.3 of the JVM Specification.
static boolean	ExceptionCheck(JNI.JNIEnv env)
static void	ExceptionClear(JNI.JNIEnv env)
static void	ExceptionDescribe(JNI.JNIEnv env)
static JNI.JThrowable	ExceptionOccurred(JNI.JNIEnv env)
static JNI.JClass	FindClass(JNI.JNIEnv env, org.graalvm.nativeimage.c.type.CCharPointer name)
static JNI.JClass	findClass(JNI.JNIEnv env, JNI.JObject classLoader, String binaryName) Finds a class in HotSpot heap using a given ClassLoader.
static JNI.JClass	findClass(JNI.JNIEnv env, JNI.JObject classLoader, String binaryName, boolean required) Finds a class in HotSpot heap using JNI.
static JNI.JClass	findClass(JNI.JNIEnv env, String binaryName) Returns a JNI.JClass for given binary name.
static JNI.JFieldID	findField(JNI.JNIEnv env, JNI.JClass clazz, boolean staticField, String fieldName, String fieldSignature)
static JNI.JMethodID	findMethod(JNI.JNIEnv env, JNI.JClass clazz, boolean staticMethod, String methodName, String methodSignature)
static int	GetArrayLength(JNI.JNIEnv env, JNI.JArray array)
static String	getBinaryName(String fqn) Converts a fully qualified Java class name from Java source format (e.g.
static org.graalvm.nativeimage.c.type.CCharPointer	GetBooleanArrayElements(JNI.JNIEnv env, JNI.JBooleanArray array, JNI.JValue isCopy)
static void	GetBooleanArrayRegion(JNI.JNIEnv env, JNI.JBooleanArray array, int offset, int len, org.graalvm.nativeimage.c.type.CCharPointer buff)
static org.graalvm.nativeimage.c.type.CCharPointer	GetByteArrayElements(JNI.JNIEnv env, JNI.JByteArray array, JNI.JValue isCopy)
static void	GetByteArrayRegion(JNI.JNIEnv env, JNI.JByteArray array, int offset, int len, org.graalvm.nativeimage.c.type.CCharPointer buff)
static org.graalvm.nativeimage.c.type.CShortPointer	GetCharArrayElements(JNI.JNIEnv env, JNI.JCharArray array, JNI.JValue isCopy)
static void	GetCharArrayRegion(JNI.JNIEnv env, JNI.JCharArray array, int offset, int len, org.graalvm.nativeimage.c.type.CShortPointer buff)
static org.graalvm.nativeimage.c.type.VoidPointer	GetDirectBufferAddress(JNI.JNIEnv env, JNI.JObject buf)
static org.graalvm.nativeimage.c.type.CDoublePointer	GetDoubleArrayElements(JNI.JNIEnv env, JNI.JDoubleArray array, JNI.JValue isCopy)
static void	GetDoubleArrayRegion(JNI.JNIEnv env, JNI.JDoubleArray array, int offset, int len, org.graalvm.nativeimage.c.type.CDoublePointer buff)
static JNI.JNIEnv	GetEnv(JNI.JavaVM vm)
static JNI.JFieldID	GetFieldID(JNI.JNIEnv env, JNI.JClass clazz, org.graalvm.nativeimage.c.type.CCharPointer name, org.graalvm.nativeimage.c.type.CCharPointer signature)
static org.graalvm.nativeimage.c.type.CFloatPointer	GetFloatArrayElements(JNI.JNIEnv env, JNI.JFloatArray array, JNI.JValue isCopy)
static void	GetFloatArrayRegion(JNI.JNIEnv env, JNI.JFloatArray array, int offset, int len, org.graalvm.nativeimage.c.type.CFloatPointer buff)
static org.graalvm.nativeimage.c.type.CIntPointer	GetIntArrayElements(JNI.JNIEnv env, JNI.JIntArray array, JNI.JValue isCopy)
static void	GetIntArrayRegion(JNI.JNIEnv env, JNI.JIntArray array, int offset, int len, org.graalvm.nativeimage.c.type.CIntPointer buff)
static String	getInternalName(String fqn) Converts a fully qualified Java class name from Java source format (e.g.
static int	GetIntField(JNI.JNIEnv env, JNI.JObject object, JNI.JFieldID fieldID)
static JNI.JavaVM	GetJavaVM(JNI.JNIEnv env)
static JNI.JObject	getJVMCIClassLoader(JNI.JNIEnv env) Returns a ClassLoader used to load the compiler classes.
static org.graalvm.nativeimage.c.type.CLongPointer	GetLongArrayElements(JNI.JNIEnv env, JNI.JLongArray array, JNI.JValue isCopy)
static void	GetLongArrayRegion(JNI.JNIEnv env, JNI.JLongArray array, int offset, int len, org.graalvm.nativeimage.c.type.CLongPointer buff)
static JNI.JMethodID	GetMethodID(JNI.JNIEnv env, JNI.JClass clazz, org.graalvm.nativeimage.c.type.CCharPointer name, org.graalvm.nativeimage.c.type.CCharPointer sig)
static JNI.JObject	GetObjectArrayElement(JNI.JNIEnv env, JNI.JObjectArray array, int index)
static JNI.JClass	GetObjectClass(JNI.JNIEnv env, JNI.JObject object)
static org.graalvm.nativeimage.c.type.CShortPointer	GetShortArrayElements(JNI.JNIEnv env, JNI.JShortArray array, JNI.JValue isCopy)
static void	GetShortArrayRegion(JNI.JNIEnv env, JNI.JShortArray array, int offset, int len, org.graalvm.nativeimage.c.type.CShortPointer buff)
static JNI.JFieldID	GetStaticFieldID(JNI.JNIEnv env, JNI.JClass clazz, org.graalvm.nativeimage.c.type.CCharPointer name, org.graalvm.nativeimage.c.type.CCharPointer sig)
static JNI.JMethodID	GetStaticMethodID(JNI.JNIEnv env, JNI.JClass clazz, org.graalvm.nativeimage.c.type.CCharPointer name, org.graalvm.nativeimage.c.type.CCharPointer sig)
static JNI.JObject	GetStaticObjectField(JNI.JNIEnv env, JNI.JClass clazz, JNI.JFieldID fieldID)
static JNI.JObject	getSystemClassLoader(JNI.JNIEnv env) Returns the ClassLoader.getSystemClassLoader().
static boolean	IsInstanceOf(JNI.JNIEnv env, JNI.JObject obj, JNI.JClass clazz)
static boolean	IsSameObject(JNI.JNIEnv env, JNI.JObject ref1, JNI.JObject ref2)
static JNI.JBooleanArray	NewBooleanArray(JNI.JNIEnv env, int len)
static JNI.JByteArray	NewByteArray(JNI.JNIEnv env, int len)
static JNI.JCharArray	NewCharArray(JNI.JNIEnv env, int len)
static JNI.JDoubleArray	NewDoubleArray(JNI.JNIEnv env, int len)
static JNI.JFloatArray	NewFloatArray(JNI.JNIEnv env, int len)
static <T extends JNI.JObject> T	NewGlobalRef(JNI.JNIEnv env, T ref, String type) Creates a new global reference.
static JNI.JIntArray	NewIntArray(JNI.JNIEnv env, int len)
static JNI.JLongArray	NewLongArray(JNI.JNIEnv env, int len)
static JNI.JObjectArray	NewObjectArray(JNI.JNIEnv env, int len, JNI.JClass componentClass, JNI.JObject initialElement)
static JNI.JShortArray	NewShortArray(JNI.JNIEnv env, int len)
static JNI.JWeak	NewWeakGlobalRef(JNI.JNIEnv env, JNI.JObject ref, String type) Creates a new weak global reference.
static JNI.JObject	PopLocalFrame(JNI.JNIEnv env, JNI.JObject result)
static int	PushLocalFrame(JNI.JNIEnv env, int capacity)
static void	ReleaseBooleanArrayElements(JNI.JNIEnv env, JNI.JBooleanArray array, org.graalvm.nativeimage.c.type.CCharPointer elems, int mode)
static void	ReleaseByteArrayElements(JNI.JNIEnv env, JNI.JByteArray array, org.graalvm.nativeimage.c.type.CCharPointer elems, int mode)
static void	ReleaseCharArrayElements(JNI.JNIEnv env, JNI.JCharArray array, org.graalvm.nativeimage.c.type.CShortPointer elems, int mode)
static void	ReleaseDoubleArrayElements(JNI.JNIEnv env, JNI.JDoubleArray array, org.graalvm.nativeimage.c.type.CDoublePointer elems, int mode)
static void	ReleaseFloatArrayElements(JNI.JNIEnv env, JNI.JFloatArray array, org.graalvm.nativeimage.c.type.CFloatPointer elems, int mode)
static void	ReleaseIntArrayElements(JNI.JNIEnv env, JNI.JIntArray array, org.graalvm.nativeimage.c.type.CIntPointer elems, int mode)
static void	ReleaseLongArrayElements(JNI.JNIEnv env, JNI.JLongArray array, org.graalvm.nativeimage.c.type.CLongPointer elems, int mode)
static void	ReleaseShortArrayElements(JNI.JNIEnv env, JNI.JShortArray array, org.graalvm.nativeimage.c.type.CShortPointer elems, int mode)
static void	SetBooleanArrayRegion(JNI.JNIEnv env, JNI.JBooleanArray array, int offset, int len, org.graalvm.nativeimage.c.type.CCharPointer buff)
static void	SetByteArrayRegion(JNI.JNIEnv env, JNI.JByteArray array, int offset, int len, org.graalvm.nativeimage.c.type.CCharPointer buff)
static void	SetCharArrayRegion(JNI.JNIEnv env, JNI.JCharArray array, int offset, int len, org.graalvm.nativeimage.c.type.CShortPointer buff)
static void	SetDoubleArrayRegion(JNI.JNIEnv env, JNI.JDoubleArray array, int offset, int len, org.graalvm.nativeimage.c.type.CDoublePointer buff)
static void	SetFloatArrayRegion(JNI.JNIEnv env, JNI.JFloatArray array, int offset, int len, org.graalvm.nativeimage.c.type.CFloatPointer buff)
static void	SetIntArrayRegion(JNI.JNIEnv env, JNI.JIntArray array, int offset, int len, org.graalvm.nativeimage.c.type.CIntPointer buff)
static void	SetLongArrayRegion(JNI.JNIEnv env, JNI.JLongArray array, int offset, int len, org.graalvm.nativeimage.c.type.CLongPointer buff)
static void	SetObjectArrayElement(JNI.JNIEnv env, JNI.JObjectArray array, int index, JNI.JObject value)
static void	SetShortArrayRegion(JNI.JNIEnv env, JNI.JShortArray array, int offset, int len, org.graalvm.nativeimage.c.type.CShortPointer buff)
static void	Throw(JNI.JNIEnv env, JNI.JThrowable throwable)
static void	trace(int level, String format, Object... args) Emits a trace line composed of format and args if the tracing level equal to or greater than level.
static void	trace(int level, Throwable throwable)
static boolean	tracingAt(int level)

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

IsSameObject

public static boolean IsSameObject(JNI.JNIEnv env,
                                   JNI.JObject ref1,
                                   JNI.JObject ref2)

DeleteLocalRef

public static void DeleteLocalRef(JNI.JNIEnv env,
                                  JNI.JObject ref)

PushLocalFrame

public static int PushLocalFrame(JNI.JNIEnv env,
                                 int capacity)

PopLocalFrame

public static JNI.JObject PopLocalFrame(JNI.JNIEnv env,
                                        JNI.JObject result)

DefineClass

public static JNI.JClass DefineClass(JNI.JNIEnv env,
                                     org.graalvm.nativeimage.c.type.CCharPointer name,
                                     JNI.JObject loader,
                                     org.graalvm.nativeimage.c.type.CCharPointer buf,
                                     int bufLen)

FindClass

public static JNI.JClass FindClass(JNI.JNIEnv env,
                                   org.graalvm.nativeimage.c.type.CCharPointer name)

GetObjectClass

public static JNI.JClass GetObjectClass(JNI.JNIEnv env,
                                        JNI.JObject object)

GetStaticMethodID

public static JNI.JMethodID GetStaticMethodID(JNI.JNIEnv env,
                                              JNI.JClass clazz,
                                              org.graalvm.nativeimage.c.type.CCharPointer name,
                                              org.graalvm.nativeimage.c.type.CCharPointer sig)

GetMethodID

public static JNI.JMethodID GetMethodID(JNI.JNIEnv env,
                                        JNI.JClass clazz,
                                        org.graalvm.nativeimage.c.type.CCharPointer name,
                                        org.graalvm.nativeimage.c.type.CCharPointer sig)

GetStaticFieldID

public static JNI.JFieldID GetStaticFieldID(JNI.JNIEnv env,
                                            JNI.JClass clazz,
                                            org.graalvm.nativeimage.c.type.CCharPointer name,
                                            org.graalvm.nativeimage.c.type.CCharPointer sig)

GetFieldID

public static JNI.JFieldID GetFieldID(JNI.JNIEnv env,
                                      JNI.JClass clazz,
                                      org.graalvm.nativeimage.c.type.CCharPointer name,
                                      org.graalvm.nativeimage.c.type.CCharPointer signature)

GetStaticObjectField

public static JNI.JObject GetStaticObjectField(JNI.JNIEnv env,
                                               JNI.JClass clazz,
                                               JNI.JFieldID fieldID)

GetIntField

public static int GetIntField(JNI.JNIEnv env,
                              JNI.JObject object,
                              JNI.JFieldID fieldID)

NewObjectArray

public static JNI.JObjectArray NewObjectArray(JNI.JNIEnv env,
                                              int len,
                                              JNI.JClass componentClass,
                                              JNI.JObject initialElement)

NewBooleanArray

public static JNI.JBooleanArray NewBooleanArray(JNI.JNIEnv env,
                                                int len)

NewByteArray

public static JNI.JByteArray NewByteArray(JNI.JNIEnv env,
                                          int len)

NewCharArray

public static JNI.JCharArray NewCharArray(JNI.JNIEnv env,
                                          int len)

NewShortArray

public static JNI.JShortArray NewShortArray(JNI.JNIEnv env,
                                            int len)

NewIntArray

public static JNI.JIntArray NewIntArray(JNI.JNIEnv env,
                                        int len)

NewLongArray

public static JNI.JLongArray NewLongArray(JNI.JNIEnv env,
                                          int len)

NewFloatArray

public static JNI.JFloatArray NewFloatArray(JNI.JNIEnv env,
                                            int len)

NewDoubleArray

public static JNI.JDoubleArray NewDoubleArray(JNI.JNIEnv env,
                                              int len)

GetArrayLength

public static int GetArrayLength(JNI.JNIEnv env,
                                 JNI.JArray array)

SetObjectArrayElement

public static void SetObjectArrayElement(JNI.JNIEnv env,
                                         JNI.JObjectArray array,
                                         int index,
                                         JNI.JObject value)

GetObjectArrayElement

public static JNI.JObject GetObjectArrayElement(JNI.JNIEnv env,
                                                JNI.JObjectArray array,
                                                int index)

GetBooleanArrayElements

public static org.graalvm.nativeimage.c.type.CCharPointer GetBooleanArrayElements(JNI.JNIEnv env,
                                                                                  JNI.JBooleanArray array,
                                                                                  JNI.JValue isCopy)

GetByteArrayElements

public static org.graalvm.nativeimage.c.type.CCharPointer GetByteArrayElements(JNI.JNIEnv env,
                                                                               JNI.JByteArray array,
                                                                               JNI.JValue isCopy)

GetCharArrayElements

public static org.graalvm.nativeimage.c.type.CShortPointer GetCharArrayElements(JNI.JNIEnv env,
                                                                                JNI.JCharArray array,
                                                                                JNI.JValue isCopy)

GetShortArrayElements

public static org.graalvm.nativeimage.c.type.CShortPointer GetShortArrayElements(JNI.JNIEnv env,
                                                                                 JNI.JShortArray array,
                                                                                 JNI.JValue isCopy)

GetIntArrayElements

public static org.graalvm.nativeimage.c.type.CIntPointer GetIntArrayElements(JNI.JNIEnv env,
                                                                             JNI.JIntArray array,
                                                                             JNI.JValue isCopy)

GetLongArrayElements

public static org.graalvm.nativeimage.c.type.CLongPointer GetLongArrayElements(JNI.JNIEnv env,
                                                                               JNI.JLongArray array,
                                                                               JNI.JValue isCopy)

GetFloatArrayElements

public static org.graalvm.nativeimage.c.type.CFloatPointer GetFloatArrayElements(JNI.JNIEnv env,
                                                                                 JNI.JFloatArray array,
                                                                                 JNI.JValue isCopy)

GetDoubleArrayElements

public static org.graalvm.nativeimage.c.type.CDoublePointer GetDoubleArrayElements(JNI.JNIEnv env,
                                                                                   JNI.JDoubleArray array,
                                                                                   JNI.JValue isCopy)

ReleaseBooleanArrayElements

public static void ReleaseBooleanArrayElements(JNI.JNIEnv env,
                                               JNI.JBooleanArray array,
                                               org.graalvm.nativeimage.c.type.CCharPointer elems,
                                               int mode)

ReleaseByteArrayElements

public static void ReleaseByteArrayElements(JNI.JNIEnv env,
                                            JNI.JByteArray array,
                                            org.graalvm.nativeimage.c.type.CCharPointer elems,
                                            int mode)

ReleaseCharArrayElements

public static void ReleaseCharArrayElements(JNI.JNIEnv env,
                                            JNI.JCharArray array,
                                            org.graalvm.nativeimage.c.type.CShortPointer elems,
                                            int mode)

ReleaseShortArrayElements

public static void ReleaseShortArrayElements(JNI.JNIEnv env,
                                             JNI.JShortArray array,
                                             org.graalvm.nativeimage.c.type.CShortPointer elems,
                                             int mode)

ReleaseIntArrayElements

public static void ReleaseIntArrayElements(JNI.JNIEnv env,
                                           JNI.JIntArray array,
                                           org.graalvm.nativeimage.c.type.CIntPointer elems,
                                           int mode)

ReleaseLongArrayElements

public static void ReleaseLongArrayElements(JNI.JNIEnv env,
                                            JNI.JLongArray array,
                                            org.graalvm.nativeimage.c.type.CLongPointer elems,
                                            int mode)

ReleaseFloatArrayElements

public static void ReleaseFloatArrayElements(JNI.JNIEnv env,
                                             JNI.JFloatArray array,
                                             org.graalvm.nativeimage.c.type.CFloatPointer elems,
                                             int mode)

ReleaseDoubleArrayElements

public static void ReleaseDoubleArrayElements(JNI.JNIEnv env,
                                              JNI.JDoubleArray array,
                                              org.graalvm.nativeimage.c.type.CDoublePointer elems,
                                              int mode)

GetBooleanArrayRegion

public static void GetBooleanArrayRegion(JNI.JNIEnv env,
                                         JNI.JBooleanArray array,
                                         int offset,
                                         int len,
                                         org.graalvm.nativeimage.c.type.CCharPointer buff)

GetByteArrayRegion

public static void GetByteArrayRegion(JNI.JNIEnv env,
                                      JNI.JByteArray array,
                                      int offset,
                                      int len,
                                      org.graalvm.nativeimage.c.type.CCharPointer buff)

GetCharArrayRegion

public static void GetCharArrayRegion(JNI.JNIEnv env,
                                      JNI.JCharArray array,
                                      int offset,
                                      int len,
                                      org.graalvm.nativeimage.c.type.CShortPointer buff)

GetShortArrayRegion

public static void GetShortArrayRegion(JNI.JNIEnv env,
                                       JNI.JShortArray array,
                                       int offset,
                                       int len,
                                       org.graalvm.nativeimage.c.type.CShortPointer buff)

GetIntArrayRegion

public static void GetIntArrayRegion(JNI.JNIEnv env,
                                     JNI.JIntArray array,
                                     int offset,
                                     int len,
                                     org.graalvm.nativeimage.c.type.CIntPointer buff)

GetLongArrayRegion

public static void GetLongArrayRegion(JNI.JNIEnv env,
                                      JNI.JLongArray array,
                                      int offset,
                                      int len,
                                      org.graalvm.nativeimage.c.type.CLongPointer buff)

GetFloatArrayRegion

public static void GetFloatArrayRegion(JNI.JNIEnv env,
                                       JNI.JFloatArray array,
                                       int offset,
                                       int len,
                                       org.graalvm.nativeimage.c.type.CFloatPointer buff)

GetDoubleArrayRegion

public static void GetDoubleArrayRegion(JNI.JNIEnv env,
                                        JNI.JDoubleArray array,
                                        int offset,
                                        int len,
                                        org.graalvm.nativeimage.c.type.CDoublePointer buff)

SetBooleanArrayRegion

public static void SetBooleanArrayRegion(JNI.JNIEnv env,
                                         JNI.JBooleanArray array,
                                         int offset,
                                         int len,
                                         org.graalvm.nativeimage.c.type.CCharPointer buff)

SetByteArrayRegion

public static void SetByteArrayRegion(JNI.JNIEnv env,
                                      JNI.JByteArray array,
                                      int offset,
                                      int len,
                                      org.graalvm.nativeimage.c.type.CCharPointer buff)

SetCharArrayRegion

public static void SetCharArrayRegion(JNI.JNIEnv env,
                                      JNI.JCharArray array,
                                      int offset,
                                      int len,
                                      org.graalvm.nativeimage.c.type.CShortPointer buff)

SetShortArrayRegion

public static void SetShortArrayRegion(JNI.JNIEnv env,
                                       JNI.JShortArray array,
                                       int offset,
                                       int len,
                                       org.graalvm.nativeimage.c.type.CShortPointer buff)

SetIntArrayRegion

public static void SetIntArrayRegion(JNI.JNIEnv env,
                                     JNI.JIntArray array,
                                     int offset,
                                     int len,
                                     org.graalvm.nativeimage.c.type.CIntPointer buff)

SetLongArrayRegion

public static void SetLongArrayRegion(JNI.JNIEnv env,
                                      JNI.JLongArray array,
                                      int offset,
                                      int len,
                                      org.graalvm.nativeimage.c.type.CLongPointer buff)

SetFloatArrayRegion

public static void SetFloatArrayRegion(JNI.JNIEnv env,
                                       JNI.JFloatArray array,
                                       int offset,
                                       int len,
                                       org.graalvm.nativeimage.c.type.CFloatPointer buff)

SetDoubleArrayRegion

public static void SetDoubleArrayRegion(JNI.JNIEnv env,
                                        JNI.JDoubleArray array,
                                        int offset,
                                        int len,
                                        org.graalvm.nativeimage.c.type.CDoublePointer buff)

GetJavaVM

public static JNI.JavaVM GetJavaVM(JNI.JNIEnv env)

GetEnv

public static JNI.JNIEnv GetEnv(JNI.JavaVM vm)

AttachCurrentThread

public static JNI.JNIEnv AttachCurrentThread(JNI.JavaVM vm,
                                             JNI.JavaVMAttachArgs args)

AttachCurrentThreadAsDaemon

public static JNI.JNIEnv AttachCurrentThreadAsDaemon(JNI.JavaVM vm,
                                                     JNI.JavaVMAttachArgs args)

DetachCurrentThread

public static boolean DetachCurrentThread(JNI.JavaVM vm)

Throw

public static void Throw(JNI.JNIEnv env,
                         JNI.JThrowable throwable)

ExceptionCheck

public static boolean ExceptionCheck(JNI.JNIEnv env)

ExceptionClear

public static void ExceptionClear(JNI.JNIEnv env)

ExceptionDescribe

public static void ExceptionDescribe(JNI.JNIEnv env)

ExceptionOccurred

public static JNI.JThrowable ExceptionOccurred(JNI.JNIEnv env)

NewGlobalRef

public static <T extends JNI.JObject> T NewGlobalRef(JNI.JNIEnv env,
                                                     T ref,
                                                     String type)

Creates a new global reference.

Parameters:

env - the JNIEnv

ref - JObject to create JNI global reference for

type - type of the object, used only for tracing to distinguish global references

Returns:

JNI global reference for given JNI.JObject

DeleteGlobalRef

public static void DeleteGlobalRef(JNI.JNIEnv env,
                                   JNI.JObject ref)

NewWeakGlobalRef

public static JNI.JWeak NewWeakGlobalRef(JNI.JNIEnv env,
                                         JNI.JObject ref,
                                         String type)

Creates a new weak global reference.

Parameters:

env - the JNIEnv

ref - JObject to create JNI weak global reference for

type - type of the object, used only for tracing to distinguish global references

Returns:

JNI weak global reference for given JNI.JObject

DeleteWeakGlobalRef

public static void DeleteWeakGlobalRef(JNI.JNIEnv env,
                                       JNI.JWeak ref)

GetDirectBufferAddress

public static org.graalvm.nativeimage.c.type.VoidPointer GetDirectBufferAddress(JNI.JNIEnv env,
                                                                                JNI.JObject buf)

IsInstanceOf

public static boolean IsInstanceOf(JNI.JNIEnv env,
                                   JNI.JObject obj,
                                   JNI.JClass clazz)

createString

public static String createString(JNI.JNIEnv env,
                                  JNI.JString hsString)

Decodes a string in the HotSpot heap to a local String.

createHSString

public static JNI.JString createHSString(JNI.JNIEnv env,
                                         String string)

Creates a String in the HotSpot heap from string.

createArray

public static boolean[] createArray(JNI.JNIEnv env,
                                    JNI.JBooleanArray booleanArray)

createHSArray

public static JNI.JBooleanArray createHSArray(JNI.JNIEnv jniEnv,
                                              boolean[] a)

createArray

public static byte[] createArray(JNI.JNIEnv env,
                                 JNI.JByteArray byteArray)

createHSArray

public static JNI.JByteArray createHSArray(JNI.JNIEnv jniEnv,
                                           byte[] a)

createArray

public static char[] createArray(JNI.JNIEnv env,
                                 JNI.JCharArray charArray)

createHSArray

public static JNI.JCharArray createHSArray(JNI.JNIEnv jniEnv,
                                           char[] a)

createArray

public static short[] createArray(JNI.JNIEnv env,
                                  JNI.JShortArray shortArray)

createHSArray

public static JNI.JShortArray createHSArray(JNI.JNIEnv jniEnv,
                                            short[] a)

createArray

public static int[] createArray(JNI.JNIEnv env,
                                JNI.JIntArray intArray)

createHSArray

public static JNI.JIntArray createHSArray(JNI.JNIEnv jniEnv,
                                          int[] a)

createArray

public static long[] createArray(JNI.JNIEnv env,
                                 JNI.JLongArray longArray)

createHSArray

public static JNI.JLongArray createHSArray(JNI.JNIEnv jniEnv,
                                           long[] a)

createArray

public static float[] createArray(JNI.JNIEnv env,
                                  JNI.JFloatArray floatArray)

createHSArray

public static JNI.JFloatArray createHSArray(JNI.JNIEnv jniEnv,
                                            float[] a)

createArray

public static double[] createArray(JNI.JNIEnv env,
                                   JNI.JDoubleArray doubleArray)

createHSArray

public static JNI.JDoubleArray createHSArray(JNI.JNIEnv jniEnv,
                                             double[] a)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             JNI.JBooleanArray src,
                             int srcPos,
                             boolean[] dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             boolean[] src,
                             int srcPos,
                             JNI.JBooleanArray dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             JNI.JByteArray src,
                             int srcPos,
                             byte[] dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             byte[] src,
                             int srcPos,
                             JNI.JByteArray dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             JNI.JCharArray src,
                             int srcPos,
                             char[] dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             char[] src,
                             int srcPos,
                             JNI.JCharArray dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             JNI.JShortArray src,
                             int srcPos,
                             short[] dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             short[] src,
                             int srcPos,
                             JNI.JShortArray dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             JNI.JIntArray src,
                             int srcPos,
                             int[] dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             int[] src,
                             int srcPos,
                             JNI.JIntArray dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             JNI.JLongArray src,
                             int srcPos,
                             long[] dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             long[] src,
                             int srcPos,
                             JNI.JLongArray dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             JNI.JFloatArray src,
                             int srcPos,
                             float[] dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             float[] src,
                             int srcPos,
                             JNI.JFloatArray dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             JNI.JDoubleArray src,
                             int srcPos,
                             double[] dest,
                             int destPos,
                             int length)

arrayCopy

public static void arrayCopy(JNI.JNIEnv jniEnv,
                             double[] src,
                             int srcPos,
                             JNI.JDoubleArray dest,
                             int destPos,
                             int length)

getInternalName

public static String getInternalName(String fqn)

Converts a fully qualified Java class name from Java source format (e.g. "java.lang.getString") to internal format (e.g. "Ljava/lang/getString;".

getBinaryName

public static String getBinaryName(String fqn)

Converts a fully qualified Java class name from Java source format (e.g. "java.lang.getString") to binary format (e.g. "java/lang/getString".

encodeMethodSignature

public static String encodeMethodSignature(Class<?> returnType,
                                           Class<?>... parameterTypes)

Creates a JVM method signature as specified in the Sections 4.3.3 of the JVM Specification.

encodeFieldSignature

public static String encodeFieldSignature(Class<?> type)

Creates a JVM field signature as specified in the Sections 4.3.2 of the JVM Specification.

findClass

public static JNI.JClass findClass(JNI.JNIEnv env,
                                   String binaryName)

Returns a JNI.JClass for given binary name.

findClass

public static JNI.JClass findClass(JNI.JNIEnv env,
                                   JNI.JObject classLoader,
                                   String binaryName)

Finds a class in HotSpot heap using a given ClassLoader.

Parameters:

env - the JNIEnv

binaryName - the class binary name

findClass

public static JNI.JClass findClass(JNI.JNIEnv env,
                                   JNI.JObject classLoader,
                                   String binaryName,
                                   boolean required)

Finds a class in HotSpot heap using JNI.

Parameters:

env - the JNIEnv

classLoader - the class loader to find class in or NULL pointer.

binaryName - the class binary name

required - if true the JNIExceptionWrapper is thrown when the class is not found. If false the NULL pointer is returned when the class is not found.

getJVMCIClassLoader

public static JNI.JObject getJVMCIClassLoader(JNI.JNIEnv env)

Returns a ClassLoader used to load the compiler classes.

getSystemClassLoader

public static JNI.JObject getSystemClassLoader(JNI.JNIEnv env)

Returns the ClassLoader.getSystemClassLoader().

findMethod

public static JNI.JMethodID findMethod(JNI.JNIEnv env,
                                       JNI.JClass clazz,
                                       boolean staticMethod,
                                       String methodName,
                                       String methodSignature)

findField

public static JNI.JFieldID findField(JNI.JNIEnv env,
                                     JNI.JClass clazz,
                                     boolean staticField,
                                     String fieldName,
                                     String fieldSignature)

attachCurrentThread

public static JNI.JNIEnv attachCurrentThread(JNI.JavaVM vm,
                                             boolean daemon,
                                             String name,
                                             JNI.JObject threadGroup)

Attaches the current C thread to a Java Thread.

Parameters:

vm - the JNI.JavaVM pointer.

daemon - if true attaches the thread as a daemon thread.

name - the name of the Java tread or null.

threadGroup - the thread group to add the thread into or C NULL pointer.

Returns:

the current thread JNI.JNIEnv or C NULL pointer in case of error.

tracingAt

public static boolean tracingAt(int level)

trace

public static void trace(int level,
                         String format,
                         Object... args)

Emits a trace line composed of format and args if the tracing level equal to or greater than level.

trace

public static void trace(int level,
                         Throwable throwable)