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authoraph <aph@138bc75d-0d04-0410-961f-82ee72b054a4>2016-09-30 16:24:48 +0000
committeraph <aph@138bc75d-0d04-0410-961f-82ee72b054a4>2016-09-30 16:24:48 +0000
commit1ab7ff47807da0d9415c8929232b8c11b4ae4f4b (patch)
tree3f22b3241c513ad168c8353805614ae1249410f4 /libjava/java/lang/VMClassLoader.java
parent657f2849bed5a2ffe6eb04310cd4b2187c29067c (diff)
2016-09-30 Andrew Haley <aph@redhat.com>
* Makefile.def: Remove libjava. * Makefile.tpl: Likewise. * Makefile.in: Regenerate. * configure.ac: Likewise. * configure: Likewise. * gcc/java: Remove. * libjava: Likewise. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240662 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libjava/java/lang/VMClassLoader.java')
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diff --git a/libjava/java/lang/VMClassLoader.java b/libjava/java/lang/VMClassLoader.java
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--- a/libjava/java/lang/VMClassLoader.java
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@@ -1,348 +0,0 @@
-/* VMClassLoader.java -- Reference implementation of native interface
- required by ClassLoader
- Copyright (C) 1998, 2001, 2002, 2003, 2004, 2005 Free Software Foundation
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath 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 for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package java.lang;
-
-import gnu.java.util.EmptyEnumeration;
-import java.lang.reflect.Constructor;
-import java.io.File;
-import java.io.IOException;
-import java.net.URL;
-import java.net.URLClassLoader;
-import java.security.AllPermission;
-import java.security.Permission;
-import java.security.Permissions;
-import java.security.ProtectionDomain;
-import java.util.ArrayList;
-import java.util.Enumeration;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.StringTokenizer;
-import gnu.gcj.runtime.BootClassLoader;
-
-/**
- * java.lang.VMClassLoader is a package-private helper for VMs to implement
- * on behalf of java.lang.ClassLoader.
- *
- * @author John Keiser
- * @author Mark Wielaard <mark@klomp.org>
- * @author Eric Blake <ebb9@email.byu.edu>
- */
-final class VMClassLoader
-{
- // Protection Domain definitions
- // FIXME: should there be a special protection domain used for native code?
-
- // The permission required to check what a classes protection domain is.
- static final Permission protectionDomainPermission
- = new RuntimePermission("getProtectionDomain");
- // The protection domain returned if we cannot determine it.
- static ProtectionDomain unknownProtectionDomain;
-
- static
- {
- Permissions permissions = new Permissions();
- permissions.add(new AllPermission());
- unknownProtectionDomain = new ProtectionDomain(null, permissions);
- }
-
- static final HashMap definedPackages = new HashMap();
-
- // This is a helper for handling java.endorsed.dirs. It is null
- // until we've initialized the system, at which point it is created.
- static BootClassLoader bootLoader;
-
- // This keeps track of shared libraries we've already tried to load.
- private static HashSet tried_libraries;
-
- // Holds one of the LIB_* constants; used to determine how shared
- // library loads are done.
- private static int lib_control;
-
- private static final int LIB_FULL = 0;
- private static final int LIB_CACHE = 1;
- private static final int LIB_NEVER = 2;
-
- /**
- * Helper to define a class using a string of bytes. This assumes that
- * the security checks have already been performed, if necessary.
- *
- * <strong>For backward compatibility, this just ignores the protection
- * domain; that is the wrong behavior, and you should directly implement
- * this method natively if you can.</strong>
- *
- * @param name the name to give the class, or null if unknown
- * @param data the data representing the classfile, in classfile format
- * @param offset the offset into the data where the classfile starts
- * @param len the length of the classfile data in the array
- * @param pd the protection domain
- * @return the class that was defined
- * @throws ClassFormatError if data is not in proper classfile format
- */
- static final native Class defineClass(ClassLoader cl, String name,
- byte[] data, int offset, int len,
- ProtectionDomain pd)
- throws ClassFormatError;
-
- /**
- * Helper to resolve all references to other classes from this class.
- *
- * @param c the class to resolve
- */
- static final void resolveClass(Class clazz)
- {
- // There doesn't seem to be a need for this to do anything.
- // Testing reveals that the JDK doesn't seem to do anything here,
- // either.
- }
-
- /**
- * Helper to load a class from the bootstrap class loader.
- *
- * @param name the class name to load
- * @param resolve whether to resolve it
- * @return the class, loaded by the bootstrap classloader or null
- * if the class wasn't found. Returning null is equivalent to throwing
- * a ClassNotFoundException (but a possible performance optimization).
- */
- static final native Class loadClass(String name, boolean resolve)
- throws ClassNotFoundException;
-
- /**
- * Helper to load a resource from the bootstrap class loader.
- *
- * In libgcj, this does nothing, as the default system loader knows
- * how to find resources that have been linked in.
- *
- * @param name the resource to find
- * @return the URL to the resource
- */
- static URL getResource(String name)
- {
- if (bootLoader != null)
- return bootLoader.bootGetResource(name);
- return null;
- }
-
- /**
- * Helper to get a list of resources from the bootstrap class loader.
- *
- * In libgcj, this does nothing, as the default system loader knows
- * how to find resources that have been linked in.
- *
- * @param name the resource to find
- * @return an enumeration of resources
- * @throws IOException if one occurs
- */
- static Enumeration getResources(String name) throws IOException
- {
- if (bootLoader != null)
- return bootLoader.bootGetResources(name);
- return EmptyEnumeration.getInstance();
- }
-
- /**
- * Helper to get a package from the bootstrap class loader. The default
- * implementation of returning null may be adequate, or you may decide
- * that this needs some native help.
- *
- * @param name the name to find
- * @return the named package, if it exists
- */
- static synchronized Package getPackage(String name)
- {
- return (Package) definedPackages.get(name);
- }
-
- /**
- * Helper to get all packages from the bootstrap class loader. The default
- * implementation of returning an empty array may be adequate, or you may
- * decide that this needs some native help.
- *
- * @return all named packages, if any exist
- */
- static synchronized Package[] getPackages()
- {
- Package[] packages = new Package[definedPackages.size()];
- return (Package[]) definedPackages.values().toArray(packages);
- }
-
- // Define a package for something loaded natively.
- static synchronized void definePackageForNative(String className)
- {
- int lastDot = className.lastIndexOf('.');
- if (lastDot != -1)
- {
- String packageName = className.substring(0, lastDot);
- if (getPackage(packageName) == null)
- {
- // FIXME: this assumes we're defining the core, which
- // isn't necessarily so. We could detect this and set up
- // appropriately. We could also look at a manifest file
- // compiled into the .so.
- Package p = new Package(packageName,
- "Java Platform API Specification",
- "GNU", "1.4", "gcj", "GNU",
- null, // FIXME: gcj version.
- null);
- definedPackages.put(packageName, p);
- }
- }
- }
-
- /**
- * Helper for java.lang.Integer, Byte, etc to get the TYPE class
- * at initialization time. The type code is one of the chars that
- * represents the primitive type as in JNI.
- *
- * <ul>
- * <li>'Z' - boolean</li>
- * <li>'B' - byte</li>
- * <li>'C' - char</li>
- * <li>'D' - double</li>
- * <li>'F' - float</li>
- * <li>'I' - int</li>
- * <li>'J' - long</li>
- * <li>'S' - short</li>
- * <li>'V' - void</li>
- * </ul>
- *
- * @param type the primitive type
- * @return a "bogus" class representing the primitive type
- */
- static final native Class getPrimitiveClass(char type);
-
- /**
- * The system default for assertion status. This is used for all system
- * classes (those with a null ClassLoader), as well as the initial value for
- * every ClassLoader's default assertion status.
- *
- * XXX - Not implemented yet; this requires native help.
- *
- * @return the system-wide default assertion status
- */
- static final boolean defaultAssertionStatus()
- {
- return true;
- }
-
- /**
- * The system default for package assertion status. This is used for all
- * ClassLoader's packageAssertionStatus defaults. It must be a map of
- * package names to Boolean.TRUE or Boolean.FALSE, with the unnamed package
- * represented as a null key.
- *
- * XXX - Not implemented yet; this requires native help.
- *
- * @return a (read-only) map for the default packageAssertionStatus
- */
- static final Map packageAssertionStatus()
- {
- return new HashMap();
- }
-
- /**
- * The system default for class assertion status. This is used for all
- * ClassLoader's classAssertionStatus defaults. It must be a map of
- * class names to Boolean.TRUE or Boolean.FALSE
- *
- * XXX - Not implemented yet; this requires native help.
- *
- * @return a (read-only) map for the default classAssertionStatus
- */
- static final Map classAssertionStatus()
- {
- return new HashMap();
- }
-
- static native ClassLoader getSystemClassLoaderInternal();
-
- static native void initBootLoader(String libdir);
-
- static void initialize(String libdir)
- {
- initBootLoader(libdir);
-
- String p
- = System.getProperty ("gnu.gcj.runtime.VMClassLoader.library_control",
- "");
- if ("never".equals(p))
- lib_control = LIB_NEVER;
- else if ("cache".equals(p))
- lib_control = LIB_CACHE;
- else if ("full".equals(p))
- lib_control = LIB_FULL;
- else
- lib_control = LIB_NEVER;
-
- tried_libraries = new HashSet();
- }
-
- /**
- * Possibly load a .so and search it for classes.
- */
- static native Class nativeFindClass(String name);
-
- static ClassLoader getSystemClassLoader()
- {
- // This method is called as the initialization of systemClassLoader,
- // so if there is a null value, this is the first call and we must check
- // for java.system.class.loader.
- String loader = System.getProperty("java.system.class.loader");
- ClassLoader default_sys = getSystemClassLoaderInternal();
- if (loader != null)
- {
- try
- {
- Class load_class = Class.forName(loader, true, default_sys);
- Constructor c
- = load_class.getConstructor(new Class[] { ClassLoader.class });
- default_sys
- = (ClassLoader) c.newInstance(new Object[] { default_sys });
- }
- catch (Exception ex)
- {
- throw new Error("Failed to load requested system classloader "
- + loader, ex);
- }
- }
-
- return default_sys;
- }
-}