1 /* 2 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package java.dyn; 27 28 import java.dyn.MethodHandles.Lookup; 29 import java.util.WeakHashMap; 30 import sun.dyn.Access; 31 import sun.dyn.MethodHandleImpl; 32 import sun.dyn.util.VerifyAccess; 33 import sun.reflect.Reflection; 34 import static sun.dyn.MemberName.newIllegalArgumentException; 35 36 /** 37 * <em>CLASS WILL BE REMOVED FOR PFD:</em> 38 * Static routines for controlling invokedynamic behavior. 39 * Replaced by non-static APIs. 40 * @author John Rose, JSR 292 EG 41 * @deprecated This class will be removed in the Public Final Draft. 42 */ 43 public class Linkage { 44 private static final Access IMPL_TOKEN = Access.getToken(); 45 46 private Linkage() {} // do not instantiate 47 48 /** 49 * <em>METHOD WILL BE REMOVED FOR PFD:</em> 50 * Register a <em>bootstrap method</em> to use when linking dynamic call sites within 51 * a given caller class. 52 * @deprecated Use @{@link BootstrapMethod} annotations instead. 53 */ 54 public static 55 void registerBootstrapMethod(Class callerClass, MethodHandle bootstrapMethod) { 56 Class callc = Reflection.getCallerClass(2); 57 if (callc != null && !VerifyAccess.isSamePackage(callerClass, callc)) 58 throw new IllegalArgumentException("cannot set bootstrap method on "+callerClass); 59 MethodHandleImpl.registerBootstrap(IMPL_TOKEN, callerClass, bootstrapMethod); 60 } 61 62 /** 63 * <em>METHOD WILL BE REMOVED FOR PFD:</em> 64 * Simplified version of {@code registerBootstrapMethod} for self-registration, 65 * to be called from a static initializer. 66 * @deprecated Use @{@link BootstrapMethod} annotations instead. 67 */ 68 public static 69 void registerBootstrapMethod(Class<?> runtime, String name) { 70 Class callerClass = Reflection.getCallerClass(2); 71 registerBootstrapMethodLookup(callerClass, runtime, name); 72 } 73 74 /** 75 * <em>METHOD WILL BE REMOVED FOR PFD:</em> 76 * Simplified version of {@code registerBootstrapMethod} for self-registration, 77 * @deprecated Use @{@link BootstrapMethod} annotations instead. 78 */ 79 public static 80 void registerBootstrapMethod(String name) { 81 Class callerClass = Reflection.getCallerClass(2); 82 registerBootstrapMethodLookup(callerClass, callerClass, name); 83 } 84 85 private static 86 void registerBootstrapMethodLookup(Class<?> callerClass, Class<?> runtime, String name) { 87 Lookup lookup = new Lookup(IMPL_TOKEN, callerClass); 88 MethodHandle bootstrapMethod; 89 try { 90 bootstrapMethod = lookup.findStatic(runtime, name, BOOTSTRAP_METHOD_TYPE); 91 } catch (NoAccessException ex) { 92 throw new IllegalArgumentException("no such bootstrap method in "+runtime+": "+name, ex); 93 } 94 MethodHandleImpl.registerBootstrap(IMPL_TOKEN, callerClass, bootstrapMethod); 95 } 96 97 private static final MethodType BOOTSTRAP_METHOD_TYPE 98 = MethodType.methodType(CallSite.class, 99 Class.class, String.class, MethodType.class); 100 101 /** 102 * <em>METHOD WILL BE REMOVED FOR PFD:</em> 103 * Invalidate all <code>invokedynamic</code> call sites everywhere. 104 * @deprecated Use {@linkplain CallSite#setTarget call site target setting} 105 * and {@link VolatileCallSite#invalidateAll call site invalidation} instead. 106 */ 107 public static 108 Object invalidateAll() { 109 throw new UnsupportedOperationException(); 110 } 111 112 /** 113 * <em>METHOD WILL BE REMOVED FOR PFD:</em> 114 * Invalidate all {@code invokedynamic} call sites in the bytecodes 115 * of any methods of the given class. 116 * @deprecated Use {@linkplain CallSite#setTarget call site target setting} 117 * and {@link VolatileCallSite#invalidateAll call site invalidation} instead. 118 */ 119 public static 120 Object invalidateCallerClass(Class<?> callerClass) { 121 throw new UnsupportedOperationException(); 122 } 123 }