[GR-57270] Refactor the IsolateArgumentParser

PullRequest: graal/18681

Author: Thomas Schrott

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/IsolateArgumentAccess.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2024, 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
+ * 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;
+
+import static com.oracle.svm.core.Uninterruptible.CALLED_FROM_UNINTERRUPTIBLE_CODE;
+
+import org.graalvm.nativeimage.c.type.CCharPointer;
+import org.graalvm.word.WordFactory;
+
+public class IsolateArgumentAccess {
+
+    @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
+    public static long readLong(IsolateArguments arguments, int index) {
+        return arguments.getParsedArgs().read(index);
+    }
+
+    @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
+    public static void writeLong(IsolateArguments arguments, int index, long value) {
+        arguments.getParsedArgs().write(index, value);
+    }
+
+    @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
+    public static int readInt(IsolateArguments arguments, int index) {
+        return (int) readLong(arguments, index);
+    }
+
+    @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
+    public static void writeInt(IsolateArguments arguments, int index, int value) {
+        writeLong(arguments, index, value);
+    }
+
+    @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
+    public static boolean readBoolean(IsolateArguments arguments, int index) {
+        return readLong(arguments, index) == 1L;
+    }
+
+    @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
+    public static void writeBoolean(IsolateArguments arguments, int index, boolean value) {
+        writeLong(arguments, index, value ? 1L : 0L);
+    }
+
+    @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
+    public static CCharPointer readCCharPointer(IsolateArguments arguments, int index) {
+        return WordFactory.pointer(readLong(arguments, index));
+    }
+
+    @Uninterruptible(reason = CALLED_FROM_UNINTERRUPTIBLE_CODE, mayBeInlined = true)
+    public static void writeCCharPointer(IsolateArguments arguments, int index, CCharPointer value) {
+        writeLong(arguments, index, value.rawValue());
+    }
+
+}