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/*
* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code 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 code 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 in the LICENSE file that
* accompanied this code).
*
* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8186211
* @summary Test basic invocation of multiple ldc's of the same dynamic constant that fail resolution
* @library /lib/testlibrary/bytecode /java/lang/invoke/common
* @build jdk.experimental.bytecode.BasicClassBuilder
* @run testng CondyRepeatFailedResolution
* @run testng/othervm -XX:+UnlockDiagnosticVMOptions -XX:UseBootstrapCallInfo=3 CondyRepeatFailedResolution
*/
import jdk.experimental.bytecode.BasicClassBuilder;
import jdk.experimental.bytecode.Flag;
import jdk.experimental.bytecode.TypedCodeBuilder;
import org.testng.Assert;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
@Test
public class CondyRepeatFailedResolution {
// Counter used to determine if a given BSM is invoked more than once
static int bsm_called = 0;
// Generated class with methods containing condy ldc
Class<?> gc;
// Bootstrap method used to represent primitive values
// that cannot be represented directly in the constant pool,
// such as byte, and for completeness of testing primitive values
// that can be represented directly, such as double or long that
// take two slots
public static Object intConversion(MethodHandles.Lookup l,
String constantName,
Class<?> constantType,
int value) throws Throwable {
++bsm_called;
// replace constantName with a bogus value to trigger failed resolution
constantName = "Foo";
switch (constantName) {
case "B":
return (byte) value;
case "C":
return (char) value;
case "D":
return (double) value;
case "F":
return (float) value;
case "I":
return value;
case "J":
return (long) value;
case "S":
return (short) value;
case "Z":
return value > 0;
case "nullRef":
return null;
case "string":
return "string";
case "stringArray":
return new String[]{"string", "string"};
default:
throw new BootstrapMethodError("Failure to generate a dynamic constant");
}
}
@BeforeClass
public void generateClass() throws Exception {
String genClassName = CondyRepeatFailedResolution.class.getSimpleName() + "$Code";
String bsmClassName = CondyRepeatFailedResolution.class.getCanonicalName().replace('.', '/');
String bsmMethodName = "intConversion";
String bsmDescriptor = MethodType.methodType(Object.class, MethodHandles.Lookup.class,
String.class, Class.class, int.class).toMethodDescriptorString();
byte[] byteArray = new BasicClassBuilder(genClassName, 55, 0)
.withSuperclass("java/lang/Object")
.withMethod("<init>", "()V", M ->
M.withFlags(Flag.ACC_PUBLIC)
.withCode(TypedCodeBuilder::new, C ->
C.aload_0().invokespecial("java/lang/Object", "<init>", "()V", false).return_()
))
.withMethod("B", "()B", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("B", "B", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Byte.MAX_VALUE))
.ireturn()
))
.withMethod("C", "()C", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("C", "C", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Character.MAX_VALUE))
.ireturn()
))
.withMethod("D", "()D", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("D", "D", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Integer.MAX_VALUE))
.dreturn()
))
.withMethod("D_AsType", "()D", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("I", "D", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Integer.MAX_VALUE))
.dreturn()
))
.withMethod("F", "()F", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("F", "F", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Integer.MAX_VALUE))
.freturn()
))
.withMethod("F_AsType", "()F", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("I", "F", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Integer.MAX_VALUE))
.freturn()
))
.withMethod("I", "()I", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("I", "I", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Integer.MAX_VALUE))
.ireturn()
))
.withMethod("J", "()J", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("J", "J", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Integer.MAX_VALUE))
.lreturn()
))
.withMethod("J_AsType", "()J", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("I", "J", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Integer.MAX_VALUE))
.lreturn()
))
.withMethod("S", "()S", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("S", "S", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Short.MAX_VALUE))
.ireturn()
))
.withMethod("Z_F", "()Z", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("Z", "Z", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(0))
.ireturn()
))
.withMethod("Z_T", "()Z", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("Z", "Z", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(1))
.ireturn()
))
.withMethod("null", "()Ljava/lang/Object;", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("nullRef", "Ljava/lang/Object;", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Integer.MAX_VALUE))
.areturn()
))
.withMethod("string", "()Ljava/lang/String;", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("string", "Ljava/lang/String;", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Integer.MAX_VALUE))
.areturn()
))
.withMethod("stringArray", "()[Ljava/lang/String;", M ->
M.withFlags(Flag.ACC_PUBLIC, Flag.ACC_STATIC)
.withCode(TypedCodeBuilder::new, C ->
C.ldc("stringArray", "[Ljava/lang/String;", bsmClassName, bsmMethodName, bsmDescriptor,
S -> S.add(Integer.MAX_VALUE))
.areturn()
))
.build();
gc = MethodHandles.lookup().defineClass(byteArray);
}
@Test
public void testPrimitives() throws Exception {
testConstants();
}
@Test
public void testRefs() throws Exception {
testConstant("string", "string");
testConstant("stringArray", new String[]{"string", "string"});
}
void testConstants() throws Exception {
// Note: for the _asType methods the BSM returns an int which is
// then converted by an asType transformation
testConstant("B", Byte.MAX_VALUE);
testConstant("C", Character.MAX_VALUE);
testConstant("D", (double) Integer.MAX_VALUE);
testConstant("D_AsType", (double) Integer.MAX_VALUE);
testConstant("F", (float) Integer.MAX_VALUE);
testConstant("F_AsType", (float) Integer.MAX_VALUE);
testConstant("I", Integer.MAX_VALUE);
testConstant("J", (long) Integer.MAX_VALUE);
testConstant("J_AsType", (long) Integer.MAX_VALUE);
testConstant("S", Short.MAX_VALUE);
testConstant("Z_F", false);
testConstant("Z_T", true);
testConstant("null", null);
}
void testConstant(String name, Object expected) throws Exception {
Method m = gc.getDeclaredMethod(name);
bsm_called = 0;
try {
Object r1 = m.invoke(null);
Assert.fail("InvocationTargetException expected to be thrown after first invocation");
} catch (InvocationTargetException e1) {
// bsm_called should have been incremented prior to the exception
Assert.assertEquals(bsm_called, 1);
Assert.assertTrue(e1.getCause() instanceof BootstrapMethodError);
// Try invoking method again to ensure that the bootstrap
// method is not invoked twice and a resolution failure
// results.
try {
Object r2 = m.invoke(null);
Assert.fail("InvocationTargetException expected to be thrown after second invocation");
} catch (InvocationTargetException e2) {
// bsm_called should remain at 1 since the bootstrap
// method should not have been invoked.
Assert.assertEquals(bsm_called, 1);
Assert.assertTrue(e2.getCause() instanceof BootstrapMethodError);
} catch (Throwable t2) {
Assert.fail("InvocationTargetException expected to be thrown");
}
} catch (Throwable t1) {
Assert.fail("InvocationTargetException expected to be thrown");
}
}
}
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