diff --git a/substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/HijrahChronologyFeature.java b/substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/HijrahChronologyFeature.java new file mode 100644 index 000000000000..6782a8d56942 --- /dev/null +++ b/substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/HijrahChronologyFeature.java @@ -0,0 +1,97 @@ +/* + * Copyright (c) 2025, 2025, 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 + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package com.oracle.svm.core.jdk; + +import java.nio.file.Path; +import java.time.chrono.HijrahChronology; +import java.util.Properties; + +import com.oracle.svm.core.annotate.Delete; +import com.oracle.svm.core.annotate.Substitute; +import com.oracle.svm.core.annotate.TargetClass; +import com.oracle.svm.core.feature.AutomaticallyRegisteredFeature; +import com.oracle.svm.core.feature.InternalFeature; + +/** + * Feature to configure {@link HijrahChronology} at build time. All {@link HijrahChronology} object + * that end up in the image heap are fully initialized. This has the advantage that the resources + * and files for configuring the {@link HijrahChronology} variants are not needed at run time. On + * the other hand, the configuration can no longer be changed after building. See + * {@link HijrahChronology} for configuration option. + */ +@AutomaticallyRegisteredFeature +public class HijrahChronologyFeature implements InternalFeature { + @Override + public void duringSetup(DuringSetupAccess access) { + // implicitly initialize HijrahChronology objects via transitive call to checkCalendarInit() + access.registerObjectReachabilityHandler(o -> o.isLeapYear(0), HijrahChronology.class); + } +} + +@TargetClass(HijrahChronology.class) +final class Target_java_time_chrono_HijrahChronology { + // Checkstyle: stop + /** + * Config path with includes JAVA_HOME. We force full initialization at build time + * {@link HijrahChronologyFeature#duringSetup}, so no need to keep this. + */ + @Delete // + private static Path CONF_PATH; + // Checkstyle: resume + + /** + * @see #CONF_PATH + */ + @Delete + private static native void registerCustomChrono(); + + /** + * @see #CONF_PATH + */ + @Delete + private native void loadCalendarData(); + + /** + * @see #CONF_PATH + */ + @Delete + private static native Properties readConfigProperties(String chronologyId, String calendarType); + + /** + * @see #CONF_PATH + */ + @Delete // + private boolean initComplete; + + /** + * No more initialization needed. + * + * @see #CONF_PATH + */ + @Substitute + private void checkCalendarInit() { + // initialized at build time + } +} diff --git a/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/jdk/JDKInitializationFeature.java b/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/jdk/JDKInitializationFeature.java index 2b7938a3d48d..1ab4c2e2a5dc 100644 --- a/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/jdk/JDKInitializationFeature.java +++ b/substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/jdk/JDKInitializationFeature.java @@ -72,7 +72,8 @@ public void afterRegistration(AfterRegistrationAccess access) { rci.initializeAtBuildTime("java.nio", JDK_CLASS_REASON); rci.initializeAtBuildTime("java.text", JDK_CLASS_REASON); rci.initializeAtBuildTime("java.time", JDK_CLASS_REASON); - rci.initializeAtRunTime("java.time.chrono.HijrahChronology", "Reads java.home in class initializer."); + // see HijrahChronologyFeature for more details + rci.initializeAtBuildTime("java.time.chrono.HijrahChronology", "Needs to be fully initialized at build time"); rci.initializeAtBuildTime("java.util", JDK_CLASS_REASON); rci.initializeAtRunTime("java.util.concurrent.SubmissionPublisher", "Executor service must be recomputed");