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8304846: Provide a shared utility to dump generated classes defined via Lookup API

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Reviewed-by: jvernee
This commit is contained in:
Mandy Chung 2023-04-04 18:07:02 +00:00
parent 2ee4245105
commit dd59471798
11 changed files with 440 additions and 393 deletions
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16
src/java.base/share/classes/java/lang/invoke/MethodHandleStatics.java
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@ -27,9 +27,11 @@ package java.lang.invoke;
import jdk.internal.misc.CDS;
import jdk.internal.misc.Unsafe;
import jdk.internal.util.ClassFileDumper;
import sun.security.action.GetPropertyAction;
import java.lang.reflect.ClassFileFormatVersion;
import java.nio.file.Path;
import java.util.Properties;
import static java.lang.invoke.LambdaForm.basicTypeSignature;
@ -49,7 +51,6 @@ class MethodHandleStatics {
static final Unsafe UNSAFE = Unsafe.getUnsafe();
static final int CLASSFILE_VERSION = ClassFileFormatVersion.latest().major();
static final boolean DEBUG_METHOD_HANDLE_NAMES;
static final boolean DUMP_CLASS_FILES;
static final boolean TRACE_INTERPRETER;
static final boolean TRACE_METHOD_LINKAGE;
static final boolean TRACE_RESOLVE;
@ -62,13 +63,13 @@ class MethodHandleStatics {
static final boolean VAR_HANDLE_GUARDS;
static final int MAX_ARITY;
static final boolean VAR_HANDLE_IDENTITY_ADAPT;
static final ClassFileDumper DUMP_CLASS_FILES;
static {
Properties props = GetPropertyAction.privilegedGetProperties();
DEBUG_METHOD_HANDLE_NAMES = Boolean.parseBoolean(
props.getProperty("java.lang.invoke.MethodHandle.DEBUG_NAMES"));
DUMP_CLASS_FILES = Boolean.parseBoolean(
props.getProperty("java.lang.invoke.MethodHandle.DUMP_CLASS_FILES"));
TRACE_INTERPRETER = Boolean.parseBoolean(
props.getProperty("java.lang.invoke.MethodHandle.TRACE_INTERPRETER"));
TRACE_METHOD_LINKAGE = Boolean.parseBoolean(
@ -96,6 +97,9 @@ class MethodHandleStatics {
MAX_ARITY = Integer.parseInt(
props.getProperty("java.lang.invoke.MethodHandleImpl.MAX_ARITY", "255"));
DUMP_CLASS_FILES = ClassFileDumper.getInstance("jdk.invoke.MethodHandle.dumpMethodHandleInternals",
Path.of("DUMP_METHOD_HANDLE_INTERNALS"));
if (CUSTOMIZE_THRESHOLD < -1 || CUSTOMIZE_THRESHOLD > 127) {
throw newInternalError("CUSTOMIZE_THRESHOLD should be in [-1...127] range");
}
@ -107,12 +111,16 @@ class MethodHandleStatics {
/*non-public*/
static boolean debugEnabled() {
return (DEBUG_METHOD_HANDLE_NAMES |
DUMP_CLASS_FILES |
DUMP_CLASS_FILES.isEnabled() |
TRACE_INTERPRETER |
TRACE_METHOD_LINKAGE |
LOG_LF_COMPILATION_FAILURE);
}
static ClassFileDumper dumper() {
return DUMP_CLASS_FILES;
}
/**
* If requested, logs the result of resolving the LambdaForm to stdout
* and informs the CDS subsystem about it.