author | jboes |
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parent 51986 | c1db377f6300 |
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/* |
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* Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
|
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* questions. |
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*/ |
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package java.lang.invoke; |
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import jdk.internal.vm.annotation.DontInline; |
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import jdk.internal.vm.annotation.ForceInline; |
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import jdk.internal.vm.annotation.Stable; |
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import java.lang.reflect.Array; |
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import java.util.Arrays; |
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import static java.lang.invoke.MethodHandleStatics.*; |
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import static java.lang.invoke.MethodHandleNatives.Constants.*; |
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import static java.lang.invoke.MethodHandles.Lookup.IMPL_LOOKUP; |
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import static java.lang.invoke.LambdaForm.*; |
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import static java.lang.invoke.LambdaForm.Kind.*; |
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/** |
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* Construction and caching of often-used invokers. |
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* @author jrose |
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*/ |
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class Invokers { |
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// exact type (sans leading target MH) for the outgoing call |
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private final MethodType targetType; |
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// Cached adapter information: |
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private final @Stable MethodHandle[] invokers = new MethodHandle[INV_LIMIT]; |
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// Indexes into invokers: |
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static final int |
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INV_EXACT = 0, // MethodHandles.exactInvoker |
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INV_GENERIC = 1, // MethodHandles.invoker (generic invocation) |
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INV_BASIC = 2, // MethodHandles.basicInvoker |
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INV_LIMIT = 3; |
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/** Compute and cache information common to all collecting adapters |
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* that implement members of the erasure-family of the given erased type. |
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*/ |
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/*non-public*/ |
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Invokers(MethodType targetType) { |
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this.targetType = targetType; |
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} |
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/*non-public*/ |
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MethodHandle exactInvoker() { |
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MethodHandle invoker = cachedInvoker(INV_EXACT); |
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if (invoker != null) return invoker; |
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invoker = makeExactOrGeneralInvoker(true); |
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return setCachedInvoker(INV_EXACT, invoker); |
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} |
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/*non-public*/ |
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MethodHandle genericInvoker() { |
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MethodHandle invoker = cachedInvoker(INV_GENERIC); |
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if (invoker != null) return invoker; |
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invoker = makeExactOrGeneralInvoker(false); |
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return setCachedInvoker(INV_GENERIC, invoker); |
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} |
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/*non-public*/ |
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MethodHandle basicInvoker() { |
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MethodHandle invoker = cachedInvoker(INV_BASIC); |
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if (invoker != null) return invoker; |
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MethodType basicType = targetType.basicType(); |
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if (basicType != targetType) { |
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// double cache; not used significantly |
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return setCachedInvoker(INV_BASIC, basicType.invokers().basicInvoker()); |
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} |
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invoker = basicType.form().cachedMethodHandle(MethodTypeForm.MH_BASIC_INV); |
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if (invoker == null) { |
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MemberName method = invokeBasicMethod(basicType); |
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invoker = DirectMethodHandle.make(method); |
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assert(checkInvoker(invoker)); |
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invoker = basicType.form().setCachedMethodHandle(MethodTypeForm.MH_BASIC_INV, invoker); |
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} |
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return setCachedInvoker(INV_BASIC, invoker); |
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} |
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/*non-public*/ |
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MethodHandle varHandleMethodInvoker(VarHandle.AccessMode ak) { |
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// TODO cache invoker |
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return makeVarHandleMethodInvoker(ak, false); |
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} |
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/*non-public*/ |
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MethodHandle varHandleMethodExactInvoker(VarHandle.AccessMode ak) { |
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// TODO cache invoker |
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return makeVarHandleMethodInvoker(ak, true); |
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} |
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private MethodHandle cachedInvoker(int idx) { |
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return invokers[idx]; |
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} |
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private synchronized MethodHandle setCachedInvoker(int idx, final MethodHandle invoker) { |
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// Simulate a CAS, to avoid racy duplication of results. |
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MethodHandle prev = invokers[idx]; |
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if (prev != null) return prev; |
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return invokers[idx] = invoker; |
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} |
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private MethodHandle makeExactOrGeneralInvoker(boolean isExact) { |
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MethodType mtype = targetType; |
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MethodType invokerType = mtype.invokerType(); |
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int which = (isExact ? MethodTypeForm.LF_EX_INVOKER : MethodTypeForm.LF_GEN_INVOKER); |
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LambdaForm lform = invokeHandleForm(mtype, false, which); |
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MethodHandle invoker = BoundMethodHandle.bindSingle(invokerType, lform, mtype); |
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String whichName = (isExact ? "invokeExact" : "invoke"); |
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invoker = invoker.withInternalMemberName(MemberName.makeMethodHandleInvoke(whichName, mtype), false); |
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assert(checkInvoker(invoker)); |
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maybeCompileToBytecode(invoker); |
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return invoker; |
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} |
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private MethodHandle makeVarHandleMethodInvoker(VarHandle.AccessMode ak, boolean isExact) { |
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MethodType mtype = targetType; |
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MethodType invokerType = mtype.insertParameterTypes(0, VarHandle.class); |
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LambdaForm lform = varHandleMethodInvokerHandleForm(ak, mtype, isExact); |
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VarHandle.AccessDescriptor ad = new VarHandle.AccessDescriptor(mtype, ak.at.ordinal(), ak.ordinal()); |
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MethodHandle invoker = BoundMethodHandle.bindSingle(invokerType, lform, ad); |
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invoker = invoker.withInternalMemberName(MemberName.makeVarHandleMethodInvoke(ak.methodName(), mtype), false); |
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assert(checkVarHandleInvoker(invoker)); |
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maybeCompileToBytecode(invoker); |
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return invoker; |
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} |
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/** If the target type seems to be common enough, eagerly compile the invoker to bytecodes. */ |
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private void maybeCompileToBytecode(MethodHandle invoker) { |
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final int EAGER_COMPILE_ARITY_LIMIT = 10; |
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if (targetType == targetType.erase() && |
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targetType.parameterCount() < EAGER_COMPILE_ARITY_LIMIT) { |
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invoker.form.compileToBytecode(); |
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} |
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} |
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// This next one is called from LambdaForm.NamedFunction.<init>. |
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/*non-public*/ |
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static MemberName invokeBasicMethod(MethodType basicType) { |
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assert(basicType == basicType.basicType()); |
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try { |
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//Lookup.findVirtual(MethodHandle.class, name, type); |
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return IMPL_LOOKUP.resolveOrFail(REF_invokeVirtual, MethodHandle.class, "invokeBasic", basicType); |
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} catch (ReflectiveOperationException ex) { |
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throw newInternalError("JVM cannot find invoker for "+basicType, ex); |
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} |
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} |
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172 |
|
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private boolean checkInvoker(MethodHandle invoker) { |
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assert(targetType.invokerType().equals(invoker.type())) |
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: java.util.Arrays.asList(targetType, targetType.invokerType(), invoker); |
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assert(invoker.internalMemberName() == null || |
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invoker.internalMemberName().getMethodType().equals(targetType)); |
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assert(!invoker.isVarargsCollector()); |
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return true; |
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} |
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|
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private boolean checkVarHandleInvoker(MethodHandle invoker) { |
183 |
MethodType invokerType = targetType.insertParameterTypes(0, VarHandle.class); |
|
184 |
assert(invokerType.equals(invoker.type())) |
|
185 |
: java.util.Arrays.asList(targetType, invokerType, invoker); |
|
186 |
assert(invoker.internalMemberName() == null || |
|
187 |
invoker.internalMemberName().getMethodType().equals(targetType)); |
|
188 |
assert(!invoker.isVarargsCollector()); |
|
189 |
return true; |
|
190 |
} |
|
191 |
||
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/** |
193 |
* Find or create an invoker which passes unchanged a given number of arguments |
|
194 |
* and spreads the rest from a trailing array argument. |
|
195 |
* The invoker target type is the post-spread type {@code (TYPEOF(uarg*), TYPEOF(sarg*))=>RT}. |
|
196 |
* All the {@code sarg}s must have a common type {@code C}. (If there are none, {@code Object} is assumed.} |
|
197 |
* @param leadingArgCount the number of unchanged (non-spread) arguments |
|
198 |
* @return {@code invoker.invokeExact(mh, uarg*, C[]{sarg*}) := (RT)mh.invoke(uarg*, sarg*)} |
|
199 |
*/ |
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/*non-public*/ |
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MethodHandle spreadInvoker(int leadingArgCount) { |
26468 | 202 |
int spreadArgCount = targetType.parameterCount() - leadingArgCount; |
203 |
MethodType postSpreadType = targetType; |
|
204 |
Class<?> argArrayType = impliedRestargType(postSpreadType, leadingArgCount); |
|
205 |
if (postSpreadType.parameterSlotCount() <= MethodType.MAX_MH_INVOKER_ARITY) { |
|
206 |
return genericInvoker().asSpreader(argArrayType, spreadArgCount); |
|
207 |
} |
|
208 |
// Cannot build a generic invoker here of type ginvoker.invoke(mh, a*[254]). |
|
209 |
// Instead, factor sinvoker.invoke(mh, a) into ainvoker.invoke(filter(mh), a) |
|
210 |
// where filter(mh) == mh.asSpreader(Object[], spreadArgCount) |
|
211 |
MethodType preSpreadType = postSpreadType |
|
212 |
.replaceParameterTypes(leadingArgCount, postSpreadType.parameterCount(), argArrayType); |
|
213 |
MethodHandle arrayInvoker = MethodHandles.invoker(preSpreadType); |
|
214 |
MethodHandle makeSpreader = MethodHandles.insertArguments(Lazy.MH_asSpreader, 1, argArrayType, spreadArgCount); |
|
215 |
return MethodHandles.filterArgument(arrayInvoker, 0, makeSpreader); |
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} |
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217 |
|
26468 | 218 |
private static Class<?> impliedRestargType(MethodType restargType, int fromPos) { |
219 |
if (restargType.isGeneric()) return Object[].class; // can be nothing else |
|
220 |
int maxPos = restargType.parameterCount(); |
|
221 |
if (fromPos >= maxPos) return Object[].class; // reasonable default |
|
222 |
Class<?> argType = restargType.parameterType(fromPos); |
|
223 |
for (int i = fromPos+1; i < maxPos; i++) { |
|
224 |
if (argType != restargType.parameterType(i)) |
|
225 |
throw newIllegalArgumentException("need homogeneous rest arguments", restargType); |
|
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226 |
} |
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if (argType == Object.class) return Object[].class; |
228 |
return Array.newInstance(argType, 0).getClass(); |
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229 |
} |
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230 |
|
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231 |
public String toString() { |
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232 |
return "Invokers"+targetType; |
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233 |
} |
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234 |
|
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235 |
static MemberName methodHandleInvokeLinkerMethod(String name, |
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236 |
MethodType mtype, |
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237 |
Object[] appendixResult) { |
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238 |
int which; |
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239 |
switch (name) { |
36934 | 240 |
case "invokeExact": which = MethodTypeForm.LF_EX_LINKER; break; |
241 |
case "invoke": which = MethodTypeForm.LF_GEN_LINKER; break; |
|
242 |
default: throw new InternalError("not invoker: "+name); |
|
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243 |
} |
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244 |
LambdaForm lform; |
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245 |
if (mtype.parameterSlotCount() <= MethodType.MAX_MH_ARITY - MH_LINKER_ARG_APPENDED) { |
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lform = invokeHandleForm(mtype, false, which); |
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247 |
appendixResult[0] = mtype; |
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248 |
} else { |
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lform = invokeHandleForm(mtype, true, which); |
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250 |
} |
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251 |
return lform.vmentry; |
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252 |
} |
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253 |
|
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|
254 |
// argument count to account for trailing "appendix value" (typically the mtype) |
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|
255 |
private static final int MH_LINKER_ARG_APPENDED = 1; |
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256 |
|
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|
257 |
/** Returns an adapter for invokeExact or generic invoke, as a MH or constant pool linker. |
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258 |
* If !customized, caller is responsible for supplying, during adapter execution, |
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|
259 |
* a copy of the exact mtype. This is because the adapter might be generalized to |
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260 |
* a basic type. |
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|
261 |
* @param mtype the caller's method type (either basic or full-custom) |
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|
262 |
* @param customized whether to use a trailing appendix argument (to carry the mtype) |
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263 |
* @param which bit-encoded 0x01 whether it is a CP adapter ("linker") or MHs.invoker value ("invoker"); |
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264 |
* 0x02 whether it is for invokeExact or generic invoke |
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|
265 |
*/ |
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266 |
static LambdaForm invokeHandleForm(MethodType mtype, boolean customized, int which) { |
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267 |
boolean isCached; |
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|
268 |
if (!customized) { |
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269 |
mtype = mtype.basicType(); // normalize Z to I, String to Object, etc. |
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270 |
isCached = true; |
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|
271 |
} else { |
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272 |
isCached = false; // maybe cache if mtype == mtype.basicType() |
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273 |
} |
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274 |
boolean isLinker, isGeneric; |
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|
275 |
Kind kind; |
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276 |
switch (which) { |
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277 |
case MethodTypeForm.LF_EX_LINKER: isLinker = true; isGeneric = false; kind = EXACT_LINKER; break; |
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278 |
case MethodTypeForm.LF_EX_INVOKER: isLinker = false; isGeneric = false; kind = EXACT_INVOKER; break; |
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|
279 |
case MethodTypeForm.LF_GEN_LINKER: isLinker = true; isGeneric = true; kind = GENERIC_LINKER; break; |
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|
280 |
case MethodTypeForm.LF_GEN_INVOKER: isLinker = false; isGeneric = true; kind = GENERIC_INVOKER; break; |
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|
281 |
default: throw new InternalError(); |
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|
282 |
} |
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|
283 |
LambdaForm lform; |
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|
284 |
if (isCached) { |
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|
285 |
lform = mtype.form().cachedLambdaForm(which); |
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|
286 |
if (lform != null) return lform; |
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|
287 |
} |
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|
288 |
// exactInvokerForm (Object,Object)Object |
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289 |
// link with java.lang.invoke.MethodHandle.invokeBasic(MethodHandle,Object,Object)Object/invokeSpecial |
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290 |
final int THIS_MH = 0; |
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|
291 |
final int CALL_MH = THIS_MH + (isLinker ? 0 : 1); |
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|
292 |
final int ARG_BASE = CALL_MH + 1; |
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293 |
final int OUTARG_LIMIT = ARG_BASE + mtype.parameterCount(); |
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294 |
final int INARG_LIMIT = OUTARG_LIMIT + (isLinker && !customized ? 1 : 0); |
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295 |
int nameCursor = OUTARG_LIMIT; |
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296 |
final int MTYPE_ARG = customized ? -1 : nameCursor++; // might be last in-argument |
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297 |
final int CHECK_TYPE = nameCursor++; |
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298 |
final int CHECK_CUSTOM = (CUSTOMIZE_THRESHOLD >= 0) ? nameCursor++ : -1; |
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299 |
final int LINKER_CALL = nameCursor++; |
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300 |
MethodType invokerFormType = mtype.invokerType(); |
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|
301 |
if (isLinker) { |
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|
302 |
if (!customized) |
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303 |
invokerFormType = invokerFormType.appendParameterTypes(MemberName.class); |
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304 |
} else { |
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|
305 |
invokerFormType = invokerFormType.invokerType(); |
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|
306 |
} |
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307 |
Name[] names = arguments(nameCursor - INARG_LIMIT, invokerFormType); |
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308 |
assert(names.length == nameCursor) |
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309 |
: Arrays.asList(mtype, customized, which, nameCursor, names.length); |
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310 |
if (MTYPE_ARG >= INARG_LIMIT) { |
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311 |
assert(names[MTYPE_ARG] == null); |
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312 |
BoundMethodHandle.SpeciesData speciesData = BoundMethodHandle.speciesData_L(); |
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313 |
names[THIS_MH] = names[THIS_MH].withConstraint(speciesData); |
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314 |
NamedFunction getter = speciesData.getterFunction(0); |
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315 |
names[MTYPE_ARG] = new Name(getter, names[THIS_MH]); |
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316 |
// else if isLinker, then MTYPE is passed in from the caller (e.g., the JVM) |
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317 |
} |
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|
318 |
|
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319 |
// Make the final call. If isGeneric, then prepend the result of type checking. |
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320 |
MethodType outCallType = mtype.basicType(); |
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Object[] outArgs = Arrays.copyOfRange(names, CALL_MH, OUTARG_LIMIT, Object[].class); |
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Object mtypeArg = (customized ? mtype : names[MTYPE_ARG]); |
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323 |
if (!isGeneric) { |
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324 |
names[CHECK_TYPE] = new Name(getFunction(NF_checkExactType), names[CALL_MH], mtypeArg); |
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// mh.invokeExact(a*):R => checkExactType(mh, TYPEOF(a*:R)); mh.invokeBasic(a*) |
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326 |
} else { |
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names[CHECK_TYPE] = new Name(getFunction(NF_checkGenericType), names[CALL_MH], mtypeArg); |
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// mh.invokeGeneric(a*):R => checkGenericType(mh, TYPEOF(a*:R)).invokeBasic(a*) |
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outArgs[0] = names[CHECK_TYPE]; |
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330 |
} |
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331 |
if (CHECK_CUSTOM != -1) { |
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names[CHECK_CUSTOM] = new Name(getFunction(NF_checkCustomized), outArgs[0]); |
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333 |
} |
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334 |
names[LINKER_CALL] = new Name(outCallType, outArgs); |
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if (customized) { |
43893 | 336 |
lform = new LambdaForm(INARG_LIMIT, names); |
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337 |
} else { |
43893 | 338 |
lform = new LambdaForm(INARG_LIMIT, names, kind); |
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339 |
} |
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340 |
if (isLinker) |
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341 |
lform.compileToBytecode(); // JVM needs a real methodOop |
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342 |
if (isCached) |
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lform = mtype.form().setCachedLambdaForm(which, lform); |
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344 |
return lform; |
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345 |
} |
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346 |
|
36934 | 347 |
|
43893 | 348 |
static MemberName varHandleInvokeLinkerMethod(VarHandle.AccessMode ak, MethodType mtype) { |
36934 | 349 |
LambdaForm lform; |
350 |
if (mtype.parameterSlotCount() <= MethodType.MAX_MH_ARITY - MH_LINKER_ARG_APPENDED) { |
|
43893 | 351 |
lform = varHandleMethodGenericLinkerHandleForm(ak, mtype); |
36934 | 352 |
} else { |
353 |
// TODO |
|
354 |
throw newInternalError("Unsupported parameter slot count " + mtype.parameterSlotCount()); |
|
355 |
} |
|
356 |
return lform.vmentry; |
|
357 |
} |
|
358 |
||
43893 | 359 |
private static LambdaForm varHandleMethodGenericLinkerHandleForm(VarHandle.AccessMode ak, |
360 |
MethodType mtype) { |
|
36934 | 361 |
// TODO Cache form? |
362 |
||
363 |
final int THIS_VH = 0; |
|
364 |
final int ARG_BASE = THIS_VH + 1; |
|
365 |
final int ARG_LIMIT = ARG_BASE + mtype.parameterCount(); |
|
366 |
int nameCursor = ARG_LIMIT; |
|
367 |
final int VAD_ARG = nameCursor++; |
|
368 |
final int CHECK_TYPE = nameCursor++; |
|
369 |
final int CHECK_CUSTOM = (CUSTOMIZE_THRESHOLD >= 0) ? nameCursor++ : -1; |
|
370 |
final int LINKER_CALL = nameCursor++; |
|
371 |
||
372 |
Name[] names = new Name[LINKER_CALL + 1]; |
|
373 |
names[THIS_VH] = argument(THIS_VH, BasicType.basicType(Object.class)); |
|
374 |
for (int i = 0; i < mtype.parameterCount(); i++) { |
|
375 |
names[ARG_BASE + i] = argument(ARG_BASE + i, BasicType.basicType(mtype.parameterType(i))); |
|
376 |
} |
|
377 |
names[VAD_ARG] = new Name(ARG_LIMIT, BasicType.basicType(Object.class)); |
|
378 |
||
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379 |
names[CHECK_TYPE] = new Name(getFunction(NF_checkVarHandleGenericType), names[THIS_VH], names[VAD_ARG]); |
36934 | 380 |
|
381 |
Object[] outArgs = new Object[ARG_LIMIT + 1]; |
|
382 |
outArgs[0] = names[CHECK_TYPE]; |
|
383 |
for (int i = 0; i < ARG_LIMIT; i++) { |
|
384 |
outArgs[i + 1] = names[i]; |
|
385 |
} |
|
386 |
||
387 |
if (CHECK_CUSTOM != -1) { |
|
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388 |
names[CHECK_CUSTOM] = new Name(getFunction(NF_checkCustomized), outArgs[0]); |
36934 | 389 |
} |
390 |
||
391 |
MethodType outCallType = mtype.insertParameterTypes(0, VarHandle.class) |
|
392 |
.basicType(); |
|
393 |
names[LINKER_CALL] = new Name(outCallType, outArgs); |
|
43893 | 394 |
LambdaForm lform = new LambdaForm(ARG_LIMIT + 1, names, VARHANDLE_LINKER); |
395 |
if (LambdaForm.debugNames()) { |
|
396 |
String name = ak.methodName() + ":VarHandle_invoke_MT_" + |
|
397 |
shortenSignature(basicTypeSignature(mtype)); |
|
398 |
LambdaForm.associateWithDebugName(lform, name); |
|
399 |
} |
|
37792 | 400 |
lform.compileToBytecode(); |
36934 | 401 |
return lform; |
402 |
} |
|
403 |
||
43893 | 404 |
private static LambdaForm varHandleMethodInvokerHandleForm(VarHandle.AccessMode ak, |
405 |
MethodType mtype, boolean isExact) { |
|
36934 | 406 |
// TODO Cache form? |
407 |
||
408 |
final int THIS_MH = 0; |
|
409 |
final int CALL_VH = THIS_MH + 1; |
|
410 |
final int ARG_BASE = CALL_VH + 1; |
|
411 |
final int ARG_LIMIT = ARG_BASE + mtype.parameterCount(); |
|
412 |
int nameCursor = ARG_LIMIT; |
|
413 |
final int VAD_ARG = nameCursor++; |
|
414 |
final int CHECK_TYPE = nameCursor++; |
|
415 |
final int LINKER_CALL = nameCursor++; |
|
416 |
||
417 |
Name[] names = new Name[LINKER_CALL + 1]; |
|
418 |
names[THIS_MH] = argument(THIS_MH, BasicType.basicType(Object.class)); |
|
419 |
names[CALL_VH] = argument(CALL_VH, BasicType.basicType(Object.class)); |
|
420 |
for (int i = 0; i < mtype.parameterCount(); i++) { |
|
421 |
names[ARG_BASE + i] = argument(ARG_BASE + i, BasicType.basicType(mtype.parameterType(i))); |
|
422 |
} |
|
423 |
||
424 |
BoundMethodHandle.SpeciesData speciesData = BoundMethodHandle.speciesData_L(); |
|
425 |
names[THIS_MH] = names[THIS_MH].withConstraint(speciesData); |
|
426 |
||
427 |
NamedFunction getter = speciesData.getterFunction(0); |
|
428 |
names[VAD_ARG] = new Name(getter, names[THIS_MH]); |
|
429 |
||
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|
430 |
if (isExact) { |
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431 |
names[CHECK_TYPE] = new Name(getFunction(NF_checkVarHandleExactType), names[CALL_VH], names[VAD_ARG]); |
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|
432 |
} else { |
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433 |
names[CHECK_TYPE] = new Name(getFunction(NF_checkVarHandleGenericType), names[CALL_VH], names[VAD_ARG]); |
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|
434 |
} |
36934 | 435 |
Object[] outArgs = new Object[ARG_LIMIT]; |
436 |
outArgs[0] = names[CHECK_TYPE]; |
|
437 |
for (int i = 1; i < ARG_LIMIT; i++) { |
|
438 |
outArgs[i] = names[i]; |
|
439 |
} |
|
440 |
||
441 |
MethodType outCallType = mtype.insertParameterTypes(0, VarHandle.class) |
|
442 |
.basicType(); |
|
443 |
names[LINKER_CALL] = new Name(outCallType, outArgs); |
|
43893 | 444 |
Kind kind = isExact ? VARHANDLE_EXACT_INVOKER : VARHANDLE_INVOKER; |
445 |
LambdaForm lform = new LambdaForm(ARG_LIMIT, names, kind); |
|
446 |
if (LambdaForm.debugNames()) { |
|
447 |
String name = ak.methodName() + |
|
448 |
(isExact ? ":VarHandle_exactInvoker_" : ":VarHandle_invoker_") + |
|
449 |
shortenSignature(basicTypeSignature(mtype)); |
|
450 |
LambdaForm.associateWithDebugName(lform, name); |
|
451 |
} |
|
36934 | 452 |
lform.prepare(); |
453 |
return lform; |
|
454 |
} |
|
455 |
||
456 |
@ForceInline |
|
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457 |
/*non-public*/ |
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|
458 |
static MethodHandle checkVarHandleGenericType(VarHandle handle, VarHandle.AccessDescriptor ad) { |
37792 | 459 |
// Test for exact match on invoker types |
460 |
// TODO match with erased types and add cast of return value to lambda form |
|
461 |
MethodHandle mh = handle.getMethodHandle(ad.mode); |
|
462 |
if (mh.type() == ad.symbolicMethodTypeInvoker) { |
|
36934 | 463 |
return mh; |
464 |
} |
|
465 |
else { |
|
37792 | 466 |
return mh.asType(ad.symbolicMethodTypeInvoker); |
36934 | 467 |
} |
468 |
} |
|
469 |
||
470 |
@ForceInline |
|
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|
471 |
/*non-public*/ |
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|
472 |
static MethodHandle checkVarHandleExactType(VarHandle handle, VarHandle.AccessDescriptor ad) { |
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|
473 |
MethodHandle mh = handle.getMethodHandle(ad.mode); |
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|
474 |
MethodType mt = mh.type(); |
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|
475 |
if (mt != ad.symbolicMethodTypeInvoker) { |
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|
476 |
throw newWrongMethodTypeException(mt, ad.symbolicMethodTypeInvoker); |
36934 | 477 |
} |
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|
478 |
return mh; |
36934 | 479 |
} |
480 |
||
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481 |
/*non-public*/ |
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|
482 |
static WrongMethodTypeException newWrongMethodTypeException(MethodType actual, MethodType expected) { |
13423
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|
483 |
// FIXME: merge with JVM logic for throwing WMTE |
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|
484 |
return new WrongMethodTypeException("expected "+expected+" but found "+actual); |
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|
485 |
} |
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|
486 |
|
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|
487 |
/** Static definition of MethodHandle.invokeExact checking code. */ |
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|
488 |
@ForceInline |
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|
489 |
/*non-public*/ |
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changeset
|
490 |
static void checkExactType(MethodHandle mh, MethodType expected) { |
13423
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|
491 |
MethodType actual = mh.type(); |
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|
492 |
if (actual != expected) |
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changeset
|
493 |
throw newWrongMethodTypeException(expected, actual); |
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|
494 |
} |
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|
495 |
|
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|
496 |
/** Static definition of MethodHandle.invokeGeneric checking code. |
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|
497 |
* Directly returns the type-adjusted MH to invoke, as follows: |
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diff
changeset
|
498 |
* {@code (R)MH.invoke(a*) => MH.asType(TYPEOF(a*:R)).invokeBasic(a*)} |
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diff
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|
499 |
*/ |
13423
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|
500 |
@ForceInline |
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changeset
|
501 |
/*non-public*/ |
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jboes
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51986
diff
changeset
|
502 |
static MethodHandle checkGenericType(MethodHandle mh, MethodType expected) { |
20527
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diff
changeset
|
503 |
return mh.asType(expected); |
d241258cfbcb
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diff
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|
504 |
/* Maybe add more paths here. Possible optimizations: |
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|
505 |
* for (R)MH.invoke(a*), |
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changeset
|
506 |
* let MT0 = TYPEOF(a*:R), MT1 = MH.type |
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diff
changeset
|
507 |
* |
d241258cfbcb
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diff
changeset
|
508 |
* if MT0==MT1 or MT1 can be safely called by MT0 |
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changeset
|
509 |
* => MH.invokeBasic(a*) |
d241258cfbcb
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diff
changeset
|
510 |
* if MT1 can be safely called by MT0[R := Object] |
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diff
changeset
|
511 |
* => MH.invokeBasic(a*) & checkcast(R) |
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diff
changeset
|
512 |
* if MT1 can be safely called by MT0[* := Object] |
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diff
changeset
|
513 |
* => checkcast(A)* & MH.invokeBasic(a*) & checkcast(R) |
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diff
changeset
|
514 |
* if a big adapter BA can be pulled out of (MT0,MT1) |
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diff
changeset
|
515 |
* => BA.invokeBasic(MT0,MH,a*) |
51986
c1db377f6300
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|
516 |
* if a local adapter LA can be cached on static CS0 = new GICS(MT0) |
20527
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|
517 |
* => CS0.LA.invokeBasic(MH,a*) |
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diff
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|
518 |
* else |
d241258cfbcb
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diff
changeset
|
519 |
* => MH.asType(MT0).invokeBasic(A*) |
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diff
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|
520 |
*/ |
13423
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twisti
parents:
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diff
changeset
|
521 |
} |
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changeset
|
522 |
|
17843fff200d
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10419
diff
changeset
|
523 |
static MemberName linkToCallSiteMethod(MethodType mtype) { |
20527
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
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diff
changeset
|
524 |
LambdaForm lform = callSiteForm(mtype, false); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
525 |
return lform.vmentry; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
526 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
527 |
|
20527
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
528 |
static MemberName linkToTargetMethod(MethodType mtype) { |
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
529 |
LambdaForm lform = callSiteForm(mtype, true); |
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
530 |
return lform.vmentry; |
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
531 |
} |
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
532 |
|
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
533 |
// skipCallSite is true if we are optimizing a ConstantCallSite |
49240
5290e816c64c
8199471: Enable generation of callSiteForms at link time
redestad
parents:
47280
diff
changeset
|
534 |
static LambdaForm callSiteForm(MethodType mtype, boolean skipCallSite) { |
13423
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7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
535 |
mtype = mtype.basicType(); // normalize Z to I, String to Object, etc. |
20527
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8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
536 |
final int which = (skipCallSite ? MethodTypeForm.LF_MH_LINKER : MethodTypeForm.LF_CS_LINKER); |
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
537 |
LambdaForm lform = mtype.form().cachedLambdaForm(which); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
538 |
if (lform != null) return lform; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
539 |
// exactInvokerForm (Object,Object)Object |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
540 |
// link with java.lang.invoke.MethodHandle.invokeBasic(MethodHandle,Object,Object)Object/invokeSpecial |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
541 |
final int ARG_BASE = 0; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
542 |
final int OUTARG_LIMIT = ARG_BASE + mtype.parameterCount(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
543 |
final int INARG_LIMIT = OUTARG_LIMIT + 1; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
544 |
int nameCursor = OUTARG_LIMIT; |
20527
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
545 |
final int APPENDIX_ARG = nameCursor++; // the last in-argument |
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
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diff
changeset
|
546 |
final int CSITE_ARG = skipCallSite ? -1 : APPENDIX_ARG; |
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
547 |
final int CALL_MH = skipCallSite ? APPENDIX_ARG : nameCursor++; // result of getTarget |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
548 |
final int LINKER_CALL = nameCursor++; |
20527
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
549 |
MethodType invokerFormType = mtype.appendParameterTypes(skipCallSite ? MethodHandle.class : CallSite.class); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
550 |
Name[] names = arguments(nameCursor - INARG_LIMIT, invokerFormType); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
551 |
assert(names.length == nameCursor); |
20527
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8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
552 |
assert(names[APPENDIX_ARG] != null); |
d241258cfbcb
8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
553 |
if (!skipCallSite) |
44590
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
554 |
names[CALL_MH] = new Name(getFunction(NF_getCallSiteTarget), names[CSITE_ARG]); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
555 |
// (site.)invokedynamic(a*):R => mh = site.getTarget(); mh.invokeBasic(a*) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
556 |
final int PREPEND_MH = 0, PREPEND_COUNT = 1; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
557 |
Object[] outArgs = Arrays.copyOfRange(names, ARG_BASE, OUTARG_LIMIT + PREPEND_COUNT, Object[].class); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
558 |
// prepend MH argument: |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
559 |
System.arraycopy(outArgs, 0, outArgs, PREPEND_COUNT, outArgs.length - PREPEND_COUNT); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
560 |
outArgs[PREPEND_MH] = names[CALL_MH]; |
20527
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8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
561 |
names[LINKER_CALL] = new Name(mtype, outArgs); |
43893 | 562 |
lform = new LambdaForm(INARG_LIMIT, names, |
563 |
(skipCallSite ? LINK_TO_TARGET_METHOD : LINK_TO_CALL_SITE)); |
|
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
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diff
changeset
|
564 |
lform.compileToBytecode(); // JVM needs a real methodOop |
20527
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8024761: JSR 292 improve performance of generic invocation
jrose
parents:
19804
diff
changeset
|
565 |
lform = mtype.form().setCachedLambdaForm(which, lform); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
566 |
return lform; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
567 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
568 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
569 |
/** Static definition of MethodHandle.invokeGeneric checking code. */ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
570 |
@ForceInline |
59201
b24f4caa1411
8234335: Remove line break in class declaration in java.base
jboes
parents:
51986
diff
changeset
|
571 |
/*non-public*/ |
b24f4caa1411
8234335: Remove line break in class declaration in java.base
jboes
parents:
51986
diff
changeset
|
572 |
static MethodHandle getCallSiteTarget(CallSite site) { |
35773
80def5fa4d65
8071368: Use more concrete types for NamedFunction constants in the code
srastogi
parents:
35252
diff
changeset
|
573 |
return site.getTarget(); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
574 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
575 |
|
29020
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
576 |
@ForceInline |
59201
b24f4caa1411
8234335: Remove line break in class declaration in java.base
jboes
parents:
51986
diff
changeset
|
577 |
/*non-public*/ |
b24f4caa1411
8234335: Remove line break in class declaration in java.base
jboes
parents:
51986
diff
changeset
|
578 |
static void checkCustomized(MethodHandle mh) { |
30336
36774c81a366
8075263: MHI::checkCustomized isn't eliminated for inlined MethodHandles
vlivanov
parents:
29020
diff
changeset
|
579 |
if (MethodHandleImpl.isCompileConstant(mh)) return; |
29020
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
580 |
if (mh.form.customized == null) { |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
581 |
maybeCustomize(mh); |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
582 |
} |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
583 |
} |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
584 |
|
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
585 |
@DontInline |
59201
b24f4caa1411
8234335: Remove line break in class declaration in java.base
jboes
parents:
51986
diff
changeset
|
586 |
/*non-public*/ |
b24f4caa1411
8234335: Remove line break in class declaration in java.base
jboes
parents:
51986
diff
changeset
|
587 |
static void maybeCustomize(MethodHandle mh) { |
29020
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
588 |
byte count = mh.customizationCount; |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
589 |
if (count >= CUSTOMIZE_THRESHOLD) { |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
590 |
mh.customize(); |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
591 |
} else { |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
592 |
mh.customizationCount = (byte)(count+1); |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
593 |
} |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
594 |
} |
9f6d43586ccb
8069591: Customize LambdaForms which are invoked using MH.invoke/invokeExact
vlivanov
parents:
26479
diff
changeset
|
595 |
|
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
596 |
// Local constant functions: |
44590
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
597 |
private static final byte NF_checkExactType = 0, |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
598 |
NF_checkGenericType = 1, |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
599 |
NF_getCallSiteTarget = 2, |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
600 |
NF_checkCustomized = 3, |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
601 |
NF_checkVarHandleGenericType = 4, |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
602 |
NF_checkVarHandleExactType = 5, |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
603 |
NF_LIMIT = 6; |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
604 |
|
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
605 |
private static final @Stable NamedFunction[] NFS = new NamedFunction[NF_LIMIT]; |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
606 |
|
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
607 |
private static NamedFunction getFunction(byte func) { |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
608 |
NamedFunction nf = NFS[func]; |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
609 |
if (nf != null) { |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
610 |
return nf; |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
611 |
} |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
612 |
NFS[func] = nf = createFunction(func); |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
613 |
// Each nf must be statically invocable or we get tied up in our bootstraps. |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
614 |
assert(InvokerBytecodeGenerator.isStaticallyInvocable(nf)); |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
615 |
return nf; |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
616 |
} |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
617 |
|
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
618 |
private static NamedFunction createFunction(byte func) { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
619 |
try { |
44590
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
620 |
switch (func) { |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
621 |
case NF_checkExactType: |
47280
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
47216
diff
changeset
|
622 |
return getNamedFunction("checkExactType", MethodType.methodType(void.class, MethodHandle.class, MethodType.class)); |
44590
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
623 |
case NF_checkGenericType: |
47280
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
47216
diff
changeset
|
624 |
return getNamedFunction("checkGenericType", MethodType.methodType(MethodHandle.class, MethodHandle.class, MethodType.class)); |
44590
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
625 |
case NF_getCallSiteTarget: |
47280
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
47216
diff
changeset
|
626 |
return getNamedFunction("getCallSiteTarget", MethodType.methodType(MethodHandle.class, CallSite.class)); |
44590
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
627 |
case NF_checkCustomized: |
47280
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
47216
diff
changeset
|
628 |
return getNamedFunction("checkCustomized", MethodType.methodType(void.class, MethodHandle.class)); |
44590
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
629 |
case NF_checkVarHandleGenericType: |
47280
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
47216
diff
changeset
|
630 |
return getNamedFunction("checkVarHandleGenericType", MethodType.methodType(MethodHandle.class, VarHandle.class, VarHandle.AccessDescriptor.class)); |
44590
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
631 |
case NF_checkVarHandleExactType: |
47280
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
47216
diff
changeset
|
632 |
return getNamedFunction("checkVarHandleExactType", MethodType.methodType(MethodHandle.class, VarHandle.class, VarHandle.AccessDescriptor.class)); |
44590
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
633 |
default: |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
634 |
throw newInternalError("Unknown function: " + func); |
15a77e5b7612
8178384: Reduce work in java.lang.invoke initializers
redestad
parents:
43893
diff
changeset
|
635 |
} |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
636 |
} catch (ReflectiveOperationException ex) { |
14089
0a41b980d62a
8000989: smaller code changes to make future JSR 292 backports easier
twisti
parents:
13610
diff
changeset
|
637 |
throw newInternalError(ex); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
638 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
639 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
10419
diff
changeset
|
640 |
|
47280
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
47216
diff
changeset
|
641 |
private static NamedFunction getNamedFunction(String name, MethodType type) |
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
47216
diff
changeset
|
642 |
throws ReflectiveOperationException |
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
47216
diff
changeset
|
643 |
{ |
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
47216
diff
changeset
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644 |
MemberName member = new MemberName(Invokers.class, name, type, REF_invokeStatic); |
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
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parents:
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changeset
|
645 |
return new NamedFunction( |
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
redestad
parents:
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diff
changeset
|
646 |
MemberName.getFactory() |
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
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|
647 |
.resolveOrFail(REF_invokeStatic, member, Invokers.class, NoSuchMethodException.class)); |
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
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|
648 |
} |
95192765a858
8187826: Avoid using reflection to bootstrap NamedFunctions
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parents:
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changeset
|
649 |
|
26468 | 650 |
private static class Lazy { |
651 |
private static final MethodHandle MH_asSpreader; |
|
652 |
||
653 |
static { |
|
654 |
try { |
|
655 |
MH_asSpreader = IMPL_LOOKUP.findVirtual(MethodHandle.class, "asSpreader", |
|
656 |
MethodType.methodType(MethodHandle.class, Class.class, int.class)); |
|
657 |
} catch (ReflectiveOperationException ex) { |
|
658 |
throw newInternalError(ex); |
|
659 |
} |
|
660 |
} |
|
661 |
} |
|
40543
629f1f599595
8164569: Generate non-customized invoker forms at link time
redestad
parents:
38328
diff
changeset
|
662 |
|
629f1f599595
8164569: Generate non-customized invoker forms at link time
redestad
parents:
38328
diff
changeset
|
663 |
static { |
629f1f599595
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changeset
|
664 |
// The Holder class will contain pre-generated Invokers resolved |
629f1f599595
8164569: Generate non-customized invoker forms at link time
redestad
parents:
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changeset
|
665 |
// speculatively using MemberName.getFactory().resolveOrNull. However, that |
629f1f599595
8164569: Generate non-customized invoker forms at link time
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parents:
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diff
changeset
|
666 |
// doesn't initialize the class, which subtly breaks inlining etc. By forcing |
629f1f599595
8164569: Generate non-customized invoker forms at link time
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diff
changeset
|
667 |
// initialization of the Holder class we avoid these issues. |
629f1f599595
8164569: Generate non-customized invoker forms at link time
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38328
diff
changeset
|
668 |
UNSAFE.ensureClassInitialized(Holder.class); |
629f1f599595
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parents:
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diff
changeset
|
669 |
} |
629f1f599595
8164569: Generate non-customized invoker forms at link time
redestad
parents:
38328
diff
changeset
|
670 |
|
629f1f599595
8164569: Generate non-customized invoker forms at link time
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parents:
38328
diff
changeset
|
671 |
/* Placeholder class for Invokers generated ahead of time */ |
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8164569: Generate non-customized invoker forms at link time
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parents:
38328
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changeset
|
672 |
final class Holder {} |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
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diff
changeset
|
673 |
} |