jdk.jfr.Enabled Java Examples

EventControl(PlatformEventType eventType) {
    eventControls.put(Enabled.NAME, defineEnabled(eventType));
    if (eventType.hasDuration()) {
        eventControls.put(Threshold.NAME, defineThreshold(eventType));
    }
    if (eventType.hasStackTrace()) {
        eventControls.put(StackTrace.NAME, defineStackTrace(eventType));
    }
    if (eventType.hasPeriod()) {
        eventControls.put(Period.NAME, definePeriod(eventType));
    }
    if (eventType.hasCutoff()) {
        eventControls.put(Cutoff.NAME, defineCutoff(eventType));
    }

    ArrayList<AnnotationElement> aes = new ArrayList<>(eventType.getAnnotationElements());
    remove(eventType, aes, Threshold.class);
    remove(eventType, aes, Period.class);
    remove(eventType, aes, Enabled.class);
    remove(eventType, aes, StackTrace.class);
    remove(eventType, aes, Cutoff.class);
    aes.trimToSize();
    eventType.setAnnotations(aes);
    this.type = eventType;
    this.idName = String.valueOf(eventType.getId());
}
 

EventControl(PlatformEventType eventType) {
    eventControls.put(Enabled.NAME, defineEnabled(eventType));
    if (eventType.hasDuration()) {
        eventControls.put(Threshold.NAME, defineThreshold(eventType));
    }
    if (eventType.hasStackTrace()) {
        eventControls.put(StackTrace.NAME, defineStackTrace(eventType));
    }
    if (eventType.hasPeriod()) {
        eventControls.put(Period.NAME, definePeriod(eventType));
    }
    if (eventType.hasCutoff()) {
        eventControls.put(Cutoff.NAME, defineCutoff(eventType));
    }

    ArrayList<AnnotationElement> aes = new ArrayList<>(eventType.getAnnotationElements());
    remove(eventType, aes, Threshold.class);
    remove(eventType, aes, Period.class);
    remove(eventType, aes, Enabled.class);
    remove(eventType, aes, StackTrace.class);
    remove(eventType, aes, Cutoff.class);
    aes.trimToSize();
    eventType.setAnnotations(aes);
    this.type = eventType;
    this.idName = String.valueOf(eventType.getId());
}
 

EventControl(PlatformEventType eventType) {
    eventControls.put(Enabled.NAME, defineEnabled(eventType));
    if (eventType.hasDuration()) {
        eventControls.put(Threshold.NAME, defineThreshold(eventType));
    }
    if (eventType.hasStackTrace()) {
        eventControls.put(StackTrace.NAME, defineStackTrace(eventType));
    }
    if (eventType.hasPeriod()) {
        eventControls.put(Period.NAME, definePeriod(eventType));
    }
    if (eventType.hasCutoff()) {
        eventControls.put(Cutoff.NAME, defineCutoff(eventType));
    }

    ArrayList<AnnotationElement> aes = new ArrayList<>(eventType.getAnnotationElements());
    remove(eventType, aes, Threshold.class);
    remove(eventType, aes, Period.class);
    remove(eventType, aes, Enabled.class);
    remove(eventType, aes, StackTrace.class);
    remove(eventType, aes, Cutoff.class);
    aes.trimToSize();
    eventType.setAnnotations(aes);
    this.type = eventType;
    this.idName = String.valueOf(eventType.getId());
}
 

boolean isEnabled() {
    Boolean result = annotationValue(classNode, ANNOTATION_TYPE_ENABLED.getDescriptor(), Boolean.class);
    if (result != null) {
        return result.booleanValue();
    }
    if (superClass != null) {
        Enabled e = superClass.getAnnotation(Enabled.class);
        if (e != null) {
            return e.value();
        }
    }
    return true;
}
 

private static Control defineEnabled(PlatformEventType type) {
    Enabled enabled = type.getAnnotation(Enabled.class);
    // Java events are enabled by default,
    // JVM events are not, maybe they should be? Would lower learning curve
    // there too.
    String def = type.isJVM() ? "false" : "true";
    if (enabled != null) {
        def = Boolean.toString(enabled.value());
    }
    type.add(PrivateAccess.getInstance().newSettingDescriptor(TYPE_ENABLED, Enabled.NAME, def, Collections.emptyList()));
    return new EnabledSetting(type, def);
}
 

private void emitOldObjectSamples(PlatformRecording recording) {
    Map<String, String> settings = recording.getSettings();
    String s = settings.get("com.oracle.jdk.OldObjectSample#" + Enabled.NAME);
    if ("true".equals(s)) {
        long nanos = CutoffSetting.parseValueSafe(settings.get("com.oracle.jdk.OldObjectSample#" + Cutoff.NAME));
        long ticks = Utils.nanosToTicks(nanos);
        JVM.getJVM().emitOldObjectSamples(ticks, WhiteBox.getWriteAllObjectSamples());
    }
}
 

private static void testDump(String pathToGcRoots, Map<String, String> settings, boolean expectedChains) throws Exception {
    try (Recording r = new Recording()) {
        Map<String, String> p = new HashMap<>(settings);
        p.put(EventNames.OldObjectSample + "#" + Enabled.NAME, "true");
        r.setName("dodo");
        r.setSettings(p);
        r.setToDisk(true);
        r.start();
        clearLeak();
        System.out.println("Recording id: " + r.getId());
        System.out.println("Settings: " + settings.toString());
        System.out.println("Command: JFR.dump " + pathToGcRoots);
        System.out.println("Chains expected: " + expectedChains);
        buildLeak();
        System.gc();
        System.gc();
        File recording = new File("TestJcmdDumpPathToGCRoots" + r.getId() + ".jfr");
        recording.delete();
        JcmdHelper.jcmd("JFR.dump", "name=dodo", pathToGcRoots, "filename=" + recording.getAbsolutePath());
        r.setSettings(Collections.emptyMap());
        List<RecordedEvent> events = RecordingFile.readAllEvents(recording.toPath());
        if (events.isEmpty()) {
            throw new Exception("No events found in recoding");
        }
        boolean chains = hasChains(events);
        if (expectedChains && !chains) {
            System.out.println(events);
            throw new Exception("Expected chains but found none");
        }
        if (!expectedChains && chains) {
            System.out.println(events);
            throw new Exception("Didn't expect chains but found some");
        }
    }
}
 

boolean isEnabled() {
    Boolean result = annotationValue(classNode, ANNOTATION_TYPE_ENABLED.getDescriptor(), Boolean.class);
    if (result != null) {
        return result.booleanValue();
    }
    if (superClass != null) {
        Enabled e = superClass.getAnnotation(Enabled.class);
        if (e != null) {
            return e.value();
        }
    }
    return true;
}
 

private static Control defineEnabled(PlatformEventType type) {
    Enabled enabled = type.getAnnotation(Enabled.class);
    // Java events are enabled by default,
    // JVM events are not, maybe they should be? Would lower learning curve
    // there too.
    String def = type.isJVM() ? "false" : "true";
    if (enabled != null) {
        def = Boolean.toString(enabled.value());
    }
    type.add(PrivateAccess.getInstance().newSettingDescriptor(TYPE_ENABLED, Enabled.NAME, def, Collections.emptyList()));
    return new EnabledSetting(type, def);
}
 

private static void testDump(String pathToGcRoots, Map<String, String> settings, boolean expectedChains) throws Exception {
    try (Recording r = new Recording()) {
        Map<String, String> p = new HashMap<>(settings);
        p.put(EventNames.OldObjectSample + "#" + Enabled.NAME, "true");
        r.setName("dodo");
        r.setSettings(p);
        r.setToDisk(true);
        r.start();
        clearLeak();
        System.out.println("Recording id: " + r.getId());
        System.out.println("Settings: " + settings.toString());
        System.out.println("Command: JFR.dump " + pathToGcRoots);
        System.out.println("Chains expected: " + expectedChains);
        buildLeak();
        System.gc();
        System.gc();
        File recording = new File("TestJcmdDumpPathToGCRoots" + r.getId() + ".jfr");
        recording.delete();
        JcmdHelper.jcmd("JFR.dump", "name=dodo", pathToGcRoots, "filename=" + recording.getAbsolutePath());
        r.setSettings(Collections.emptyMap());
        List<RecordedEvent> events = RecordingFile.readAllEvents(recording.toPath());
        if (events.isEmpty()) {
            throw new Exception("No events found in recoding");
        }
        boolean chains = hasChains(events);
        if (expectedChains && !chains) {
            System.out.println(events);
            throw new Exception("Expected chains but found none");
        }
        if (!expectedChains && chains) {
            System.out.println(events);
            throw new Exception("Didn't expect chains but found some");
        }
    }
}
 

boolean isEnabled() {
    Boolean result = annotationValue(classNode, ANNOTATION_TYPE_ENABLED.getDescriptor(), Boolean.class);
    if (result != null) {
        return result.booleanValue();
    }
    if (superClass != null) {
        Enabled e = superClass.getAnnotation(Enabled.class);
        if (e != null) {
            return e.value();
        }
    }
    return true;
}
 

private static Control defineEnabled(PlatformEventType type) {
    Enabled enabled = type.getAnnotation(Enabled.class);
    // Java events are enabled by default,
    // JVM events are not, maybe they should be? Would lower learning curve
    // there too.
    String def = type.isJVM() ? "false" : "true";
    if (enabled != null) {
        def = Boolean.toString(enabled.value());
    }
    type.add(PrivateAccess.getInstance().newSettingDescriptor(TYPE_ENABLED, Enabled.NAME, def, Collections.emptyList()));
    return new EnabledSetting(type, def);
}
 

private static void testDump(String pathToGcRoots, Map<String, String> settings, boolean expectedChains) throws Exception {
    try (Recording r = new Recording()) {
        Map<String, String> p = new HashMap<>(settings);
        p.put(EventNames.OldObjectSample + "#" + Enabled.NAME, "true");
        r.setName("dodo");
        r.setSettings(p);
        r.setToDisk(true);
        r.start();
        clearLeak();
        System.out.println("Recording id: " + r.getId());
        System.out.println("Settings: " + settings.toString());
        System.out.println("Command: JFR.dump " + pathToGcRoots);
        System.out.println("Chains expected: " + expectedChains);
        buildLeak();
        System.gc();
        System.gc();
        File recording = new File("TestJcmdDumpPathToGCRoots" + r.getId() + ".jfr");
        recording.delete();
        JcmdHelper.jcmd("JFR.dump", "name=dodo", pathToGcRoots, "filename=" + recording.getAbsolutePath());
        r.setSettings(Collections.emptyMap());
        List<RecordedEvent> events = RecordingFile.readAllEvents(recording.toPath());
        if (events.isEmpty()) {
            throw new Exception("No events found in recoding");
        }
        boolean chains = hasChains(events);
        if (expectedChains && !chains) {
            System.out.println(events);
            throw new Exception("Expected chains but found none");
        }
        if (!expectedChains && chains) {
            System.out.println(events);
            throw new Exception("Didn't expect chains but found some");
        }
    }
}
 

@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
    switch (qName) {
    case ELEMENT_RELATION_DECL:
        String relationalURI = attributes.getValue(ATTRIBUTE_URI);
        String id = attributes.getValue(ATTRIBUTE_ID);
        typedef.put(id, relationalURI);
        break;
    case ELEMENT_PRIMARY_TYPE:
        addTypedef(attributes);
        break;
    case ELEMENT_STRUCT_ARRAY:
        valueDeclarations.add(new ValueDeclaration(type, 1, attributes));
        break;
    case ELEMENT_VALUE:
    case ELEMENT_STRUCT_VALUE:
        valueDeclarations.add(new ValueDeclaration(type, 0, attributes));
        break;
    case ELEMENT_EVENT:
        type = createType(attributes, true, structTypeId++, false);
        boolean stackTrace = getBoolean(attributes, ATTRIBUTE_HAS_STACKTRACE);
        boolean thread = getBoolean(attributes, (ATTRIBUTE_HAS_THREAD));
        boolean instant = getBoolean(attributes, (ATTRIBUTE_IS_INSTANT));
        boolean requestable = getBoolean(attributes, (ATTRIBUTE_IS_REQUESTABLE));
        boolean constant = getBoolean(attributes, (ATTRIBUTE_IS_CONSTANT));
        boolean duration = !requestable && !instant;
        boolean experimental = getBoolean(attributes, ATTRIBUTE_EXPERIMENTAL);
        boolean cutoff =  getBoolean(attributes, ATTRIBUTE_CUTOFF);
        TypeLibrary.addImplicitFields(type, requestable, duration, thread, stackTrace, cutoff);
        ArrayList<AnnotationElement> aes = new ArrayList<>();
        aes.addAll(type.getAnnotationElements());
        if (requestable) {
            String period = constant ? "endChunk" : "everyChunk";
            aes.add(new AnnotationElement(Period.class, period));
        } else {
            if (!instant) {
                aes.add(new AnnotationElement(Threshold.class, "0 ns"));
            }
            if (stackTrace) {
                aes.add(new AnnotationElement(StackTrace.class, true));
            }
        }
        if (cutoff) {
            aes.add(new AnnotationElement(Cutoff.class, Cutoff.INIFITY));
        }
        if (experimental) {
            aes.add(new AnnotationElement(Experimental.class));
        }
        aes.add(new AnnotationElement(Enabled.class, false));
        aes.trimToSize();
        type.setAnnotations(aes);
        break;
    case ELEMENT_CONTENT_TYPE:
        if (attributes.getValue(ATTRIBUTE_BUILTIN_TYPE) != null) {
            type = createType(attributes, false, builtInId(attributes), true);
        } else {
            type = createType(attributes, false, jvmTypeId++, true);
        }
        break;
    case ELEMENT_STRUCT_TYPE:
    case ELEMENT_STRUCT:
        type = createType(attributes, false, structTypeId++, false);
        break;
    }
}