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JDK 17 jdk.jfr.jmod - JFR Module
JDK 17 jdk.jfr.jmod is the JMOD file for JDK 17 JFR module.
JDK 17 JFR module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\jdk.jfr.jmod.
JDK 17 JFR module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.
JDK 17 JFR module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\jdk.jfr.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ jdk/jfr/internal/Control.java
/* * Copyright (c) 2016, 2021, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package jdk.jfr.internal; import java.security.AccessControlContext; import java.security.AccessController; import java.security.PrivilegedAction; import java.util.Collections; import java.util.HashSet; import java.util.Objects; import java.util.Set; import jdk.jfr.SettingControl; import jdk.jfr.internal.settings.JDKSettingControl; public final class Control { @SuppressWarnings("removal") private final AccessControlContext context; private static final int CACHE_SIZE = 5; private final Set<?>[] cachedUnions = new HashSet<?>[CACHE_SIZE]; private final String[] cachedValues = new String[CACHE_SIZE]; private final SettingControl delegate; private String defaultValue; private String lastValue; // called by exposed subclass in external API public Control(SettingControl delegate, String defaultValue) { this.context = PrivateAccess.getInstance().getContext(delegate); this.delegate = delegate; this.defaultValue = defaultValue; if (this.context == null && !(delegate instanceof JDKSettingControl)) { throw new InternalError("Security context can only be null for trusted setting controls"); } } boolean isType(Class<? extends SettingControl> clazz) { return delegate.getClass() == clazz; } final void apply(Set<String> values) { setValue(findCombine(values)); } final void setDefault() { if (defaultValue == null) { defaultValue = getValue(); } apply(defaultValue); } @SuppressWarnings("removal") public String getValue() { if (context == null) { // VM events requires no access control context return getValue(); } else { return AccessController.doPrivileged(new PrivilegedAction<String>() { @Override public String run() { try { return delegate.getValue(); } catch (Throwable t) { // Prevent malicious user to propagate exception callback in the wrong context Logger.log(LogTag.JFR_SETTING, LogLevel.WARN, "Exception occurred when trying to get value for " + getClass()); } return defaultValue != null ? defaultValue : ""; // Need to return something } }, context); } } private void apply(String value) { if (lastValue != null && Objects.equals(value, lastValue)) { return; } setValue(value); } @SuppressWarnings("removal") public void setValue(String value) { if (context == null) { // VM events requires no access control context try { delegate.setValue(value); } catch (Throwable t) { Logger.log(LogTag.JFR_SETTING, LogLevel.WARN, "Exception occurred when setting value \"" + value + "\" for " + getClass()); } } else { AccessController.doPrivileged(new PrivilegedAction<Void>() { @Override public Void run() { try { delegate.setValue(value); } catch (Throwable t) { // Prevent malicious user to propagate exception callback in the wrong context Logger.log(LogTag.JFR_SETTING, LogLevel.WARN, "Exception occurred when setting value \"" + value + "\" for " + getClass()); } return null; } }, context); } lastValue = value; } @SuppressWarnings("removal") public String combine(Set<String> values) { if (context == null) { // VM events requires no access control context return delegate.combine(values); } return AccessController.doPrivileged(new PrivilegedAction<String>() { @Override public String run() { try { delegate.combine(Collections.unmodifiableSet(values)); } catch (Throwable t) { // Prevent malicious user to propagate exception callback in the wrong context Logger.log(LogTag.JFR_SETTING, LogLevel.WARN, "Exception occurred when combining " + values + " for " + getClass()); } return null; } }, context); } private final String findCombine(Set<String> values) { if (values.size() == 1) { return values.iterator().next(); } for (int i = 0; i < CACHE_SIZE; i++) { if (Objects.equals(cachedUnions[i], values)) { return cachedValues[i]; } } String result = combine(values); for (int i = 0; i < CACHE_SIZE - 1; i++) { cachedUnions[i + 1] = cachedUnions[i]; cachedValues[i + 1] = cachedValues[i]; } cachedValues[0] = result; cachedUnions[0] = values; return result; } final String getDefaultValue() { return defaultValue; } final String getLastValue() { return lastValue; } }
⏎ jdk/jfr/internal/Control.java
Or download all of them as a single archive file:
File name: jdk.jfr-17.0.5-src.zip File size: 363343 bytes Release date: 2022-09-13 Download
⇒ JDK 17 jdk.jlink.jmod - JLink Tool
2023-04-17, 8981👍, 0💬
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