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/*
* Copyright (C) 2012 RoboVM AB
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.bugvm.rt;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.net.URL;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.HashMap;
import java.util.Map;
import java.util.jar.Attributes;
import java.util.jar.Manifest;
import libcore.util.EmptyArray;
/**
*
* @version $Id$
*/
public final class VM {
private static HashMap runtimeData;
/**
* Returns the VM's boot class path.
*/
public static native String bootClassPath();
/**
* Returns the VM's class path.
*/
public static native String classPath();
/**
* Returns the path to the executable or dynamic library currently running.
*/
public static native String imagePath();
/**
* Returns the resources path where the apps or frameworks resources are
* located. For executables this is typically the directory where the
* executable is located. For OS X/iOS frameworks this is typically the
* {@code Resources} folder located next to the dynamic library file.
*/
public static native String resourcesPath();
/**
* Returns the names of any static libraries that have been linked into the
* executable.
*/
public static native String[] staticLibs();
/**
* Returns the defining classes of the methods in the call stack. If
* skipNum is 0 the first entry in the returned array is the
* class of the method calling the caller of this method.
*
* @param skipNum the number of classes to skip.
* @param maxDepth the max number of classes to return. -1 for the entire
* stack.
* @return the classes.
*/
public static native final Class[] getStackClasses(int skipNum, int maxDepth);
/**
* Returns all {@link Class}es known to the VM optionally filtering on the
* specified class or interface {@link Class}.
*
* @param assignableToClass optional {@link Class} which all returned
* {@link Class}es must be assignment compatible with. Pass
* {@code null} to return all classes.
* @param classLoader the {@link ClassLoader} which the returned
* {@link Class}es must belong to. Pass {@code null} for the boot
* {@link ClassLoader}.
* @return the matching classes.
*/
public static final Class[] listClasses(Class assignableToClass, ClassLoader classLoader) {
Class[] result = listClasses0(assignableToClass, classLoader);
if (result == null) {
return EmptyArray.CLASS;
}
return result;
}
/**
* Returns runtime data linked into the executable during compilation.
*/
public static final byte[] getRuntimeData(String id) {
try {
return getRuntimeData0(id);
} catch (UnsupportedEncodingException e) {
throw new Error(e);
}
}
private static final byte[] getRuntimeData0(String id) throws UnsupportedEncodingException {
if (runtimeData == null) {
// The data consists of key value pairs prefixed with the number of
// pairs (int). In each pair the key is an UTF8 encoded string
// prefixed with the key's length (int) and the data is a byte array
// prefixed with the data length (int).
HashMap map = new HashMap<>();
byte[] allData = getRuntimeData0();
if (allData != null) {
ByteBuffer bb = ByteBuffer.wrap(allData).order(ByteOrder.nativeOrder());
int pairCount = bb.getInt();
for (int i = 0; i < pairCount; i++) {
int keySize = bb.getInt();
String key = new String(allData, bb.position(), keySize, "UTF8");
bb.position(bb.position() + keySize);
int dataSize = bb.getInt();
byte[] data = new byte[dataSize];
bb.get(data);
map.put(key, data);
}
}
runtimeData = map;
}
return runtimeData.get(id);
}
private static native final byte[] getRuntimeData0();
private static native final Class[] listClasses0(Class assignableToClass, ClassLoader classLoader);
public native static final void generateHeapDump();
public native static final long allocateMemory(int size);
public native static final long allocateMemoryUncollectable(int size);
public native static final long allocateMemoryAtomic(int size);
public native static final long freeMemoryUncollectable(long address);
public native static void registerDisappearingLink(long address, Object obj);
public native static void unregisterDisappearingLink(long address);
public native static final long malloc(int size);
public native static final void free(long address);
public native static final T allocateObject(Class cls);
public native static final ByteBuffer newDirectByteBuffer(long address, long capacity);
public native static final void memcpy(long s1, long s2, long n);
public native static final void memmove8(long s1, long s2, long n);
public native static final void memmove16(long s1, long s2, long n);
public native static final void memmove32(long s1, long s2, long n);
public native static final void memmove64(long s1, long s2, long n);
public native static final void memset(long s, byte c, long n);
public native static final long getCallbackMethodImpl(Method method);
public native static final void bindBridgeMethod(Method method, long impl);
public native static final boolean isBridgeMethodBound(Method method);
public native static final long getObjectAddress(Object object);
public native static final Object castAddressToObject(long address);
public native static final long getFieldAddress(Field field);
public native static final int getInstanceFieldOffset(long field);
public native static final long getClassFieldAddress(long field);
public native static final Object getObject(long address);
public native static final double getDouble(long address);
public native static final float getFloat(long address);
public native static final long getLong(long address);
public native static final int getInt(long address);
public native static final char getChar(long address);
public native static final short getShort(long address);
public native static final byte getByte(long address);
public native static final boolean getBoolean(long address);
public native static final void setObject(long address, Object value);
public native static final void setDouble(long address, double value);
public native static final void setFloat(long address, float value);
public native static final void setLong(long address, long value);
public native static final void setInt(long address, int value);
public native static final void setChar(long address, char value);
public native static final void setShort(long address, short value);
public native static final void setByte(long address, byte value);
public native static final void setBoolean(long address, boolean value);
public native static final long getPointer(long address);
public native static final void setPointer(long address, long value);
public native static final long getStringUTFChars(String s);
public native static final String newStringUTF(long address);
public native static final String newStringNoCopy(char[] chars, int offset, int length);
public native static final long getArrayValuesAddress(Object array);
public native static final boolean[] newBooleanArray(long address, int size);
public native static final byte[] newByteArray(long address, int size);
public native static final char[] newCharArray(long address, int size);
public native static final short[] newShortArray(long address, int size);
public native static final int[] newIntArray(long address, int size);
public native static final long[] newLongArray(long address, int size);
public native static final float[] newFloatArray(long address, int size);
public native static final double[] newDoubleArray(long address, int size);
}
