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Use --debug=dumpLambdaDeserializationStats in test

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This commit is contained in:
Liam Miller-Cushon 2026-01-22 12:10:39 +01:00
parent 5d79a7977a
commit 9dc6020194
3 changed files with 6 additions and 92 deletions
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92
test/langtools/tools/javac/lambda/SerializableObjectMethodReferencesOnInterfaces.java
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@ -29,28 +29,14 @@
* jdk.compiler/com.sun.tools.javac.main
* jdk.jdeps/com.sun.tools.javap
* @build toolbox.ToolBox toolbox.JavacTask
* @run main SerializableObjectMethodReferencesOnInterfaces
* @compile/ref=SerializableObjectMethodReferencesOnInterfaces.out -XDrawDiagnostics --debug=dumpLambdaDeserializationStats SerializableObjectMethodReferencesOnInterfaces.java
*/
import java.io.Serializable;
import java.lang.classfile.*;
import java.lang.classfile.ClassFile;
import java.lang.classfile.ClassModel;
import java.lang.classfile.CodeElement;
import java.lang.classfile.MethodModel;
import java.lang.classfile.instruction.ConstantInstruction;
import java.lang.classfile.instruction.InvokeInstruction;
import java.net.URL;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Iterator;
public class SerializableObjectMethodReferencesOnInterfaces {
public static void main(String... args) throws Exception {
new SerializableObjectMethodReferencesOnInterfaces().run();
}
static class Test {
interface I1 extends Serializable {}
@ -74,80 +60,4 @@ public class SerializableObjectMethodReferencesOnInterfaces {
F<Object, Integer> f4 = Object::hashCode;
}
}
public void run() throws Exception {
URL url =
SerializableObjectMethodReferencesOnInterfaces.class.getResource(
"SerializableObjectMethodReferencesOnInterfaces$Test.class");
Path file = Paths.get(url.toURI());
ClassModel cf = ClassFile.of().parse(file);
String actual = printDeserializationTests(cf);
String expected =
"""
getImplMethodKind 5
getFunctionalInterfaceClass SerializableObjectMethodReferencesOnInterfaces$Test$F
getFunctionalInterfaceMethodName apply
getFunctionalInterfaceMethodSignature (Ljava/lang/Object;)Ljava/lang/Object;
getImplClass java/lang/Object
getImplMethodSignature ()I
getImplMethodKind 5
getFunctionalInterfaceClass SerializableObjectMethodReferencesOnInterfaces$Test$F
getFunctionalInterfaceMethodName apply
getFunctionalInterfaceMethodSignature (Ljava/lang/Object;)Ljava/lang/Object;
getImplClass java/lang/Object
getImplMethodSignature ()I
getImplMethodKind 5
getFunctionalInterfaceClass SerializableObjectMethodReferencesOnInterfaces$Test$F
getFunctionalInterfaceMethodName apply
getFunctionalInterfaceMethodSignature (Ljava/lang/Object;)Ljava/lang/Object;
getImplClass java/lang/Enum
getImplMethodSignature ()I
getImplMethodKind 5
getFunctionalInterfaceClass SerializableObjectMethodReferencesOnInterfaces$Test$F
getFunctionalInterfaceMethodName apply
getFunctionalInterfaceMethodSignature (Ljava/lang/Object;)Ljava/lang/Object;
getImplClass java/lang/Object
getImplMethodSignature ()I
""";
if (!actual.equals(expected)) {
throw new AssertionError(
"Unexpected deserialization tests, expected:\n"
+ expected
+ "\nactual:\n"
+ actual);
}
}
private static String printDeserializationTests(ClassModel cf) {
MethodModel m =
cf.methods().stream()
.filter(
x ->
x.methodName()
.stringValue()
.contentEquals("$deserializeLambda$"))
.findFirst()
.get();
Iterator<CodeElement> it = m.code().get().iterator();
StringBuilder sb = new StringBuilder();
while (it.hasNext()) {
CodeElement curr = it.next();
if (curr instanceof InvokeInstruction i
&& i.method()
.owner()
.asInternalName()
.contentEquals("java/lang/invoke/SerializedLambda")) {
CodeElement next = it.next();
if (next instanceof ConstantInstruction c) {
sb.append(
i.method().name().stringValue()
+ " "
+ c.constantValue().toString()
+ "\n");
}
}
}
return sb.toString();
}
}

4
test/langtools/tools/javac/lambda/SerializableObjectMethodReferencesOnInterfaces.out Normal file
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@ -0,0 +1,4 @@
SerializableObjectMethodReferencesOnInterfaces.java:57:33: compiler.note.lambda.deserialization.stat: SerializableObjectMethodReferencesOnInterfaces$Test$F, apply, (Ljava/lang/Object;)Ljava/lang/Object;, 5, java/lang/Object, hashCode, ()I
SerializableObjectMethodReferencesOnInterfaces.java:58:33: compiler.note.lambda.deserialization.stat: SerializableObjectMethodReferencesOnInterfaces$Test$F, apply, (Ljava/lang/Object;)Ljava/lang/Object;, 5, java/lang/Object, hashCode, ()I
SerializableObjectMethodReferencesOnInterfaces.java:59:32: compiler.note.lambda.deserialization.stat: SerializableObjectMethodReferencesOnInterfaces$Test$F, apply, (Ljava/lang/Object;)Ljava/lang/Object;, 5, java/lang/Enum, hashCode, ()I
SerializableObjectMethodReferencesOnInterfaces.java:60:37: compiler.note.lambda.deserialization.stat: SerializableObjectMethodReferencesOnInterfaces$Test$F, apply, (Ljava/lang/Object;)Ljava/lang/Object;, 5, java/lang/Object, hashCode, ()I

2
test/langtools/tools/javac/lambda/SerializableObjectMethods.out
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@ -1,4 +1,4 @@
SerializableObjectMethods.java:59:35: compiler.note.lambda.deserialization.stat: SerializableObjectMethods$F, apply, (Ljava/lang/Object;)Ljava/lang/Object;, 5, java/lang/Object, hashCode, ()I
SerializableObjectMethods.java:60:35: compiler.note.lambda.deserialization.stat: SerializableObjectMethods$F, apply, (Ljava/lang/Object;)Ljava/lang/Object;, 9, SerializableObjectMethods$I2, hashCode, ()I
SerializableObjectMethods.java:60:35: compiler.note.lambda.deserialization.stat: SerializableObjectMethods$F, apply, (Ljava/lang/Object;)Ljava/lang/Object;, 5, java/lang/Object, hashCode, ()I
- compiler.note.unchecked.filename: SerializableObjectMethods.java
- compiler.note.unchecked.recompile