8284199: Implementation of Structured Concurrency (Incubator)

Co-authored-by: Ron Pressler <rpressler@openjdk.org>
Co-authored-by: Alan Bateman <alanb@openjdk.org>
Co-authored-by: Brian Goetz <briangoetz@openjdk.org>
Co-authored-by: Paul Sandoz <psandoz@openjdk.org>
Reviewed-by: psandoz, mcimadamore, darcy

Author: 4 people

make/conf/docs-modules.conf

@@ -42,6 +42,7 @@ DOCS_MODULES= \
     jdk.hotspot.agent \
     jdk.httpserver \
     jdk.jpackage \
+    jdk.incubator.concurrent \
     jdk.incubator.vector \
     jdk.jartool \
     jdk.javadoc \

make/conf/module-loader-map.conf

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014, 2021, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2014, 2022, 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
@@ -43,6 +43,7 @@ BOOT_MODULES= \
     java.rmi \
     java.security.sasl \
     java.xml \
+    jdk.incubator.concurrent \
     jdk.incubator.vector \
     jdk.internal.vm.ci \
     jdk.jfr \

src/java.base/share/classes/module-info.java

@@ -202,6 +202,7 @@
         jdk.charsets,
         jdk.compiler,
         jdk.crypto.cryptoki,
+        jdk.incubator.concurrent,
         jdk.incubator.vector,
         jdk.jfr,
         jdk.jshell,

src/jdk.incubator.concurrent/share/classes/jdk/incubator/concurrent/StructureViolationException.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2021, 2022, 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 jdk.incubator.concurrent;
+
+/**
+ * Thrown when a structure violation is detected.
+ *
+ * @see StructuredTaskScope#fork(Callable)
+ * @see StructuredTaskScope#close()
+ *
+ * @since 19
+ */
+public final class StructureViolationException extends RuntimeException {
+    @java.io.Serial
+    private static final long serialVersionUID = -7705327650798235468L;
+
+    /**
+     * Constructs a {@code StructureViolationException} with no detail message.
+     */
+    public StructureViolationException() {
+        super();
+    }
+
+    /**
+     * Constructs a {@code StructureViolationException} with the specified
+     * detail message.
+     *
+     * @param  message the detail message, can be null
+     */
+    public StructureViolationException(String message) {
+        super(message);
+    }
+}