stan/jdk-24
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

8343026: JFR: Index into fields in the topFrame

Browse Source 
Reviewed-by: mgronlun
This commit is contained in:
Erik Gahlin 2024-10-29 14:23:07 +00:00
parent d8b3685d36
commit 7c800e6bae
4 changed files with 94 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/jdk.jfr/share/classes/jdk/jfr/internal/Type.java
View File

@ -38,6 +38,7 @@ import jdk.jfr.AnnotationElement;
import jdk.jfr.Event;
import jdk.jfr.SettingControl;
import jdk.jfr.ValueDescriptor;
import jdk.jfr.internal.util.Utils;
/**
* Internal data structure that describes a type,
@ -185,15 +186,10 @@ public class Type implements Comparable<Type> {
Type type = PrivateAccess.getInstance().getType(subField);
return type.getField(post);
}
} else {
for (ValueDescriptor v : getFields()) {
if (name.equals(v.getName())) {
return v;
}
}
}
return null;
}
return Utils.findField(getFields(), name);
}
public List<ValueDescriptor> getFields() {
if (fields instanceof ArrayList<?> list) {

155
src/jdk.jfr/share/classes/jdk/jfr/internal/query/FieldBuilder.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2023, 2024, 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
@ -49,6 +49,9 @@ import jdk.jfr.consumer.RecordedClassLoader;
import jdk.jfr.consumer.RecordedEvent;
import jdk.jfr.consumer.RecordedFrame;
import jdk.jfr.consumer.RecordedStackTrace;
import jdk.jfr.internal.PrivateAccess;
import jdk.jfr.internal.Type;
import jdk.jfr.internal.util.Utils;
/**
* This is a helper class to QueryResolver. It handles the creation of fields
@ -60,9 +63,9 @@ import jdk.jfr.consumer.RecordedStackTrace;
final class FieldBuilder {
private static final Set<String> KNOWN_TYPES = createKnownTypes();
private final List<EventType> eventTypes;
private final ValueDescriptor descriptor;
private final Field field;
private final String fieldName;
private ValueDescriptor descriptor;
public FieldBuilder(List<EventType> eventTypes, FilteredType type, String fieldName) {
this.eventTypes = eventTypes;
@ -77,12 +80,15 @@ final class FieldBuilder {
return List.of(field);
}
configureAliases();
if (descriptor != null) {
field.fixedWidth = !descriptor.getTypeName().equals("java.lang.String");
field.dataType = descriptor.getTypeName();
field.label = makeLabel(descriptor, hasDuration());
field.alignLeft = true;
if (field.valueGetter == null) {
field.valueGetter = valueGetter(field.name);
}
configureNumericTypes();
configureTime();
@ -113,22 +119,6 @@ final class FieldBuilder {
}
private boolean configureSyntheticFields() {
if (fieldName.equals("stackTrace.topApplicationFrame")) {
configureTopApplicationFrameField();
return true;
}
if (fieldName.equals("stackTrace.notInit")) {
configureNotInitFrameField();
return true;
}
if (fieldName.equals("stackTrace.topFrame.class")) {
configureTopFrameClassField();
return true;
}
if (fieldName.equals("stackTrace.topFrame")) {
configureTopFrameField();
return true;
}
if (fieldName.equals("id") && field.type.getName().equals("jdk.ActiveSetting")) {
configureEventTypeIdField();
return true;
@ -144,6 +134,73 @@ final class FieldBuilder {
return false;
}
private void configureAliases() {
configureFrame("topFrame", FieldBuilder::topFrame);
configureFrame("topApplicationFrame", FieldBuilder::topApplicationFrame);
configureFrame("topNotInitFrame", FieldBuilder::topNotInitFrame);
}
private void configureFrame(String frameName, Function<RecordedEvent, Object> getter) {
String name = "stackTrace." + frameName;
if (!fieldName.startsWith(name)) {
return;
}
ValueDescriptor stackTrace = Utils.findField(field.type.getFields(), "stackTrace");
if (stackTrace == null) {
return;
}
ValueDescriptor frames = Utils.findField(stackTrace.getFields(), "frames");
if (frames == null) {
return;
}
int length = name.length();
if (fieldName.length() == length) {
descriptor = frames; // Use array descriptor for now
field.valueGetter = getter;
return;
}
String subName = fieldName.substring(length + 1);
Type type = PrivateAccess.getInstance().getType(frames);
ValueDescriptor subField = type.getField(subName);
if (subField != null) {
descriptor = subField;
field.valueGetter = e -> {
if (getter.apply(e) instanceof RecordedFrame frame) {
return frame.getValue(subName);
}
return null;
};
}
}
private static RecordedFrame topFrame(RecordedEvent event) {
return findJavaFrame(event, x -> true);
}
private static RecordedFrame topApplicationFrame(RecordedEvent event) {
return findJavaFrame(event, frame -> {
RecordedClass cl = frame.getMethod().getType();
RecordedClassLoader classLoader = cl.getClassLoader();
return classLoader != null && !"bootstrap".equals(classLoader.getName());
});
}
private static Object topNotInitFrame(RecordedEvent event) {
return findJavaFrame(event, frame -> !frame.getMethod().getName().equals("<init>"));
}
private static RecordedFrame findJavaFrame(RecordedEvent event, Predicate<RecordedFrame> condition) {
RecordedStackTrace st = event.getStackTrace();
if (st != null) {
for (RecordedFrame frame : st.getFrames()) {
if (frame.isJavaFrame() && condition.test(frame)) {
return frame;
}
}
}
return null;
}
private void configureEventTypeIdField() {
Map<Long, String> eventTypes = createEventTypeLookup();
field.alignLeft = true;
@ -166,65 +223,6 @@ final class FieldBuilder {
return map;
}
private void configureTopFrameField() {
field.alignLeft = true;
field.label = "Method";
field.dataType = "jdk.types.Method";
field.valueGetter = e -> {
RecordedStackTrace t = e.getStackTrace();
return t != null ? t.getFrames().getFirst() : null;
};
field.lexicalSort = true;
}
private void configureTopFrameClassField() {
field.alignLeft = true;
field.label = "Class";
field.dataType = "java.lang.Class";
field.valueGetter = e -> {
RecordedStackTrace t = e.getStackTrace();
if (t == null) {
return null;
}
return t.getFrames().getFirst().getMethod().getType();
};
field.lexicalSort = true;
}
private void configureCustomFrame(Predicate<RecordedFrame> condition) {
field.alignLeft = true;
field.dataType = "jdk.types.Frame";
field.label = "Method";
field.lexicalSort = true;
field.valueGetter = e -> {
RecordedStackTrace t = e.getStackTrace();
if (t != null) {
for (RecordedFrame f : t.getFrames()) {
if (f.isJavaFrame()) {
if (condition.test(f)) {
return f;
}
}
}
}
return null;
};
}
private void configureNotInitFrameField() {
configureCustomFrame(frame -> {
return !frame.getMethod().getName().equals("<init>");
});
}
private void configureTopApplicationFrameField() {
configureCustomFrame(frame -> {
RecordedClass cl = frame.getMethod().getType();
RecordedClassLoader classLoader = cl.getClassLoader();
return classLoader != null && !"bootstrap".equals(classLoader.getName());
});
}
private void configureEventType(Function<RecordedEvent, Object> retriever) {
field.alignLeft = true;
field.dataType = String.class.getName();
@ -234,6 +232,9 @@ final class FieldBuilder {
}
private static String makeLabel(ValueDescriptor v, boolean hasDuration) {
if (v.getTypeName().equals("jdk.types.StackFrame")) {
return "Method";
}
String label = v.getLabel();
if (label == null) {
return v.getName();

4
src/jdk.jfr/share/classes/jdk/jfr/internal/query/view.ini
View File

@ -186,7 +186,7 @@ table = "COLUMN 'Monitor Address', 'Class', 'Threads', 'Max Duration'
label = "Deprecated Methods for Removal"
table = "COLUMN 'Deprecated Method', 'Called from Class'
FORMAT truncate-beginning, cell-height:10000;truncate-beginning
SELECT method AS m, SET(stackTrace.topFrame.class)
SELECT method AS m, SET(stackTrace.topFrame.method.type)
FROM DeprecatedInvocation
WHERE forRemoval = 'true'
GROUP BY m
@ -266,7 +266,7 @@ table = "COLUMN 'Message', 'Count'
[application.exception-by-site]
label ="Exceptions by Site"
table = "COLUMN 'Method', 'Count'
SELECT stackTrace.notInit AS S, COUNT(startTime) AS C
SELECT stackTrace.topNotInitFrame AS S, COUNT(startTime) AS C
FROM JavaErrorThrow, JavaExceptionThrow GROUP BY S ORDER BY C DESC"
[application.file-reads-by-path]

10
src/jdk.jfr/share/classes/jdk/jfr/internal/util/Utils.java
View File

@ -48,6 +48,7 @@ import jdk.internal.module.Checks;
import jdk.jfr.Event;
import jdk.jfr.EventType;
import jdk.jfr.RecordingState;
import jdk.jfr.ValueDescriptor;
import jdk.jfr.internal.LogLevel;
import jdk.jfr.internal.LogTag;
import jdk.jfr.internal.Logger;
@ -438,4 +439,13 @@ public final class Utils {
return defaultValue;
}
}
public static ValueDescriptor findField(List<ValueDescriptor> fields, String name) {
for (ValueDescriptor v : fields) {
if (v.getName().equals(name)) {
return v;
}
}
return null;
}
}