[GR-24080] [GR-57399] [GR-57642] [GR-57990] Bugfixes, refactorings, and cleanups for the Posix signal handling.

sdk/src/org.graalvm.nativeimage/snapshot.sigtest

@@ -99,7 +99,7 @@ meth public void printStackTrace(java.io.PrintStream)
 meth public void printStackTrace(java.io.PrintWriter)
 meth public void setStackTrace(java.lang.StackTraceElement[])
 supr java.lang.Object
-hfds CAUSE_CAPTION,EMPTY_THROWABLE_ARRAY,NULL_CAUSE_MESSAGE,SELF_SUPPRESSION_MESSAGE,SUPPRESSED_CAPTION,SUPPRESSED_SENTINEL,UNASSIGNED_STACK,backtrace,cause,depth,detailMessage,serialVersionUID,stackTrace,suppressedExceptions
+hfds CAUSE_CAPTION,EMPTY_THROWABLE_ARRAY,NULL_CAUSE_MESSAGE,SELF_SUPPRESSION_MESSAGE,SUPPRESSED_CAPTION,SUPPRESSED_SENTINEL,UNASSIGNED_STACK,backtrace,cause,depth,detailMessage,jfrTracing,serialVersionUID,stackTrace,suppressedExceptions
 hcls PrintStreamOrWriter,SentinelHolder,WrappedPrintStream,WrappedPrintWriter
 
 CLSS public abstract interface java.lang.annotation.Annotation
@@ -224,23 +224,23 @@ meth public abstract void fatalError()
 meth public abstract void flush()
 meth public abstract void log(org.graalvm.nativeimage.c.type.CCharPointer,org.graalvm.word.UnsignedWord)
 
-CLSS public final org.graalvm.nativeimage.MissingReflectionRegistrationError
-cons public init(java.lang.String,java.lang.Class<?>,java.lang.Class<?>,java.lang.String,java.lang.Class<?>[])
+CLSS public final org.graalvm.nativeimage.MissingJNIRegistrationError
+cons public init(java.lang.String,java.lang.Class<?>,java.lang.Class<?>,java.lang.String,java.lang.String)
 meth public java.lang.Class<?> getDeclaringClass()
 meth public java.lang.Class<?> getElementType()
-meth public java.lang.Class<?>[] getParameterTypes()
 meth public java.lang.String getElementName()
+meth public java.lang.String getSignature()
 supr java.lang.Error
-hfds declaringClass,elementName,elementType,parameterTypes,serialVersionUID
+hfds declaringClass,elementName,elementType,serialVersionUID,signature
 
-CLSS public final org.graalvm.nativeimage.MissingJNIRegistrationError
-cons public init(java.lang.String,java.lang.Class<?>,java.lang.Class<?>,java.lang.String,java.lang.String)
+CLSS public final org.graalvm.nativeimage.MissingReflectionRegistrationError
+cons public init(java.lang.String,java.lang.Class<?>,java.lang.Class<?>,java.lang.String,java.lang.Class<?>[])
 meth public java.lang.Class<?> getDeclaringClass()
 meth public java.lang.Class<?> getElementType()
-meth public java.lang.String getSignature()
+meth public java.lang.Class<?>[] getParameterTypes()
 meth public java.lang.String getElementName()
 supr java.lang.Error
-hfds declaringClass,elementName,elementType,signature,serialVersionUID
+hfds declaringClass,elementName,elementType,parameterTypes,serialVersionUID
 
 CLSS public abstract interface org.graalvm.nativeimage.ObjectHandle
 intf org.graalvm.word.ComparableWord
@@ -552,6 +552,7 @@ meth public abstract !hasdefault java.lang.String value()
 CLSS public final static org.graalvm.nativeimage.c.constant.CConstant$ValueAccess
  outer org.graalvm.nativeimage.c.constant.CConstant
 meth public static <%0 extends java.lang.Object> {%%0} get(java.lang.Class<?>,java.lang.String,java.lang.Class<{%%0}>)
+meth public static <%0 extends java.lang.Object> {%%0} get(java.lang.Enum<?>,java.lang.String)
 supr java.lang.Object
 
 CLSS public abstract interface !annotation org.graalvm.nativeimage.c.constant.CEnum

sdk/src/org.graalvm.nativeimage/src/org/graalvm/nativeimage/c/constant/CConstant.java

@@ -92,9 +92,11 @@ private ValueAccess() {
          * @param declaringClass The class that contains the method.
          * @param methodName The name of the method annotated with {@link CConstant}.
          * @param returnType The desired type of the returned value. For integer-kind constants, the
-         *            supported types are {@link Long}, {@link Integer}, and {@link Boolean}. For
-         *            floating point constants, the only supported type is {@link Double}. For
-         *            string constants, the only supported type is {@link String}.
+         *            supported types are {@link Boolean}, {@link Byte}, {@link Short},
+         *            {@link Character}, {@link Integer}, and {@link Long}. For floating point
+         *            constants, the supported types are {@link Double} and {@link Float}. For
+         *            string constants, the only supported types are {@link String} and
+         *            {@code byte[]}.
          * @return The value of the C constant.
          *
          * @since 19.0
@@ -103,5 +105,24 @@ private ValueAccess() {
         public static <T> T get(Class<?> declaringClass, String methodName, Class<T> returnType) {
             return ImageSingletons.lookup(CConstantValueSupport.class).getCConstantValue(declaringClass, methodName, returnType);
         }
+
+        /**
+         * Returns the value of a {@link CEnum}, i.e., the same value that calling the method
+         * annotated with {@link CEnumValue} would return.
+         * <p>
+         * This method is useful during native image generation, when the annotated method cannot be
+         * called.
+         *
+         * @param cEnum The enum value for which the C value should be returned. The enum type must
+         *            be annotated with {@link CEnum}.
+         * @param methodName The name of the method annotated with {@link CEnumValue}.
+         * @return The value of the C constant.
+         *
+         * @since 24.2
+         */
+        @Platforms(Platform.HOSTED_ONLY.class)
+        public static <T> T get(Enum<?> cEnum, String methodName) {
+            return ImageSingletons.lookup(CConstantValueSupport.class).getCEnumValue(cEnum, methodName);
+        }
     }
 }

sdk/src/org.graalvm.nativeimage/src/org/graalvm/nativeimage/impl/CConstantValueSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0
@@ -46,4 +46,6 @@
 @Platforms(Platform.HOSTED_ONLY.class)
 public interface CConstantValueSupport {
     <T> T getCConstantValue(Class<?> declaringClass, String methodName, Class<T> returnType);
+
+    <T> T getCEnumValue(Enum<?> cEnum, String methodName);
 }

substratevm/src/com.oracle.svm.core.posix/src/com/oracle/svm/core/posix/PosixPlatformTimeUtils.java

@@ -36,7 +36,7 @@ public final class PosixPlatformTimeUtils extends PlatformTimeUtils {
 
     @Override
     @BasedOnJDKFile("https://github.com/openjdk/jdk/blob/jdk-24+3/src/hotspot/os/posix/os_posix.cpp#L1409-L1415")
-    protected SecondsNanos javaTimeSystemUTC() {
+    public SecondsNanos javaTimeSystemUTC() {
         Time.timespec ts = StackValue.get(Time.timespec.class);
         int status = PosixUtils.clock_gettime(Time.CLOCK_REALTIME(), ts);
         PosixUtils.checkStatusIs0(status, "javaTimeSystemUTC: clock_gettime(CLOCK_REALTIME) failed.");