/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.cldchi.jvm;
public class JVM {
/**
* If this flag is defined and the romization is successful, class
* files are removed from the JAR file(s) after the romization
* process. This parameter is ignored for source romization.
*/
public static final int REMOVE_CLASSES_FROM_JAR = (1 << 1);
/**
* Returned by getAppImageProgress() to indicate that the last image
* creation process has was cancelled before it was completed.
*/
public static final int STATUS_CANCELLED = -3;
/**
* Returned by getAppImageProgress() to indicate that the last image
* creation process has failed before it was completed.
*/
public static final int STATUS_FAILED = -2;
/**
* Returned by getAppImageProgress() to indicate that no image
* creation process has ever been started since the VM was bootstraped.
*/
public static final int STATUS_VIRGIN = -1;
/**
* Any value returned by getAppImageProgress() that.s greater or equal to
* STATUS_START, but lower than STATUS_SUCCEEDED, means that the
* image creation is still taking place.
*/
public static final int STATUS_START = 0;
/**
* Returned by getAppImageProgress() to indicate that the last image
* creation process has succeeded.
*/
public static final int STATUS_SUCCEEDED = 100;
/**
* Returned by verifyJar() to indicate no classes verification
* has ever been started since VM didn't find any classes in JAR.
*/
public static final int STATUS_VERIFY_NOTHING = 1;
/**
* Returned by verifyJar() to indicate all JAR classes were
* successfully verified.
*/
public static final int STATUS_VERIFY_SUCCEEDED = 2;
/**
* Returned by verifyJar() to indicate JAR classes verification
* failed by some reason.
*/
public static final int STATUS_VERIFY_FAILED = 3;
/**
* Creates an application image file. It loads the Java classes
* from the <code>jarFile</code> into the heap, verify the class
* contents, and write the classes to an Application Image file as
* specified by <code>binFile</code>. This function is typically
* executed by the Application Management Software (AMS)
* immediately after a JAR file is downloaded to the device. <p>
*
* This function must be called with a clean VM state -- i.e., if a
* Java application is executing, you must exit the Java application
* before running the Converter. <p>
*
* In MVM mode, this method should not be called only from within
* a clean Isolate. <p>
*
* <b>Interaction with classpath and shared libraries: </b>
* In the context of the VM (or current Isolate), the classpath
* may be specified to additional shared libraries. These shared
* libraries are loaded first, before jarFile is loaded. All shared
* libraries specified on the classpath must be binary image files
* and must be be JAR files.
*
* Note that if the image creation process was cancelled, no exception
* is thrown. A subsequent call to getAppImageProgress() will return
* STATUS_CANCELLED.
*
* @param jarFile specifies the JAR file to be converted.
*
* @param binFile specifies the name of the app image file to be
* written into
*
* @exception Error if another instance of the converter is
* already running.
*
* @exception OutOfMemoryError if the VM ran out of memory during
* the image creation process.
*/
private static void createAppImage(char jarFile[], char binFile[],
int flags) throws Error {
startAppImage(jarFile, binFile, flags);
for (;;) {
if (!createAppImage0()) {
break;
}
}
}
public static void createAppImage(String jarFile, String binFile,
int flags) throws Error
{
createAppImage(jarFile.toCharArray(), binFile.toCharArray(),
flags);
}
public native static int getAppImageProgress();
/**
* If an image creation process is underway, cancel it. This will
* force createAppImage() to delete all temporary files, as well as
* the output image file, and return immediately. A future call to
* getAppImageProgress() will return STATUS_CANCELLED.
*
* If an image creation process is not underway, this method has no
* effect.
*/
public native static void cancelImageCreation();
private static native void startAppImage(char jarFile[], char binFile[],
int flags) throws Error;
/**
* Returns true if the image creation process has completed or
* been concelled.
*/
private native static boolean createAppImage0();
/**
* This method is used by the source romizer to create ROMImage.cpp.
*
* @exception Error if the romization process fails for any reason.
*/
private native static void createSysImage()
throws Error;
/**
* This method is used to load binary library into the VM.
* It allows to call native function implementations from this library.
*
* @param libName name of the library WITHOUT EXTENSION. It was made to make
* java code platform-independent.
*
* @exception Error if the VM fails to load the library with this name.
*/
public native static void loadLibrary(String libName)
throws Error;
/**
* Copy an array from the specified source array, beginning at the
* specified position, to the specified position of the destination array.
* <p>
* Impose the following restrictions on the input arguments:
* <ul>
* <li><code>dst</code> is not <code>null</code>.
* <li><code>src</code> is not <code>null</code>.
* <li>The <code>srcOffset</code> argument is not negative.
* <li>The <code>dstOffset</code> argument is not negative.
* <li>The <code>length</code> argument is not negative.
* <li><code>srcOffset+length</code> is not greater than
* <code>src.length</code>, the length of the source array.
* <li><code>dstOffset+length</code> is not greater than
* <code>dst.length</code>, the length of the destination array.
* <li>any actual component of the source array from position
* <code>srcOffset</code> through <code>srcOffset+length-1</code>
* can be converted to the component type of the destination array
* </ul>
* <p>
* The caller is responsible that these restrictions are not violated.
* If any of the restrictions above is violated, the behavior is undefined.
*
* @param src the source array.
* @param srcOffset start position in the source array.
* @param dst the destination array.
* @param dstOffset start position in the destination data.
* @param length the number of array elements to be copied.
*/
public static void unchecked_byte_arraycopy(byte[] src,
int srcOffset,
byte[] dst,
int dstOffset,
int length) {
System.arraycopy(src, srcOffset, dst, dstOffset, length);
}
public static void unchecked_char_arraycopy(char[] src,
int srcOffset,
char[] dst,
int dstOffset,
int length) {
System.arraycopy(src, srcOffset, dst, dstOffset, length);
}
public static void unchecked_int_arraycopy(int[] src,
int srcOffset,
int[] dst,
int dstOffset,
int length) {
System.arraycopy(src, srcOffset, dst, dstOffset, length);
}
public static void unchecked_long_arraycopy(long[] src,
int srcOffset,
long[] dst,
int dstOffset,
int length) {
System.arraycopy(src, srcOffset, dst, dstOffset, length);
}
public static void unchecked_obj_arraycopy(Object[] src,
int srcOffset,
Object[] dst,
int dstOffset,
int length) {
System.arraycopy(src, srcOffset, dst, dstOffset, length);
}
/**
* Verifies all classes of the given JAR package within the current
* VM instance. The JAR path should be included into classpath(s) of
* the VM.
*
* @param jar specifies the JAR file to be verified.
* @param chunkSize amount of bytecode to be verified with a single
* native call, however not less than one class will be
* verified with a single call.
* @return status of the JAR classes verification, it can be one of the
* following values STATUS_VERIFY_NOTHING, STATUS_VERIFY_SUCCEEDED or
* STATUS_VERIFY_FAILED
*/
public static int verifyJar(String jar, int chunkSize) {
int nextChunkID = 0;
int status = STATUS_VERIFY_NOTHING;
try {
do {
nextChunkID = verifyNextChunk(jar, nextChunkID, chunkSize);
Thread.yield();
} while (nextChunkID > 0);
// OK, just all files verified
if (nextChunkID == 0) {
status = STATUS_VERIFY_SUCCEEDED;
}
} catch (Throwable t) {
//do we need it?
t.printStackTrace();
status = STATUS_VERIFY_FAILED;
}
return status;
}
private static native int verifyNextChunk(String jar, int nextChunkID,
int chunkSize);
}
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