8286540: Build failure caused by missing DefaultPollerProvider implementation on AIX

Reviewed-by: bpb, alanb

Author: Tyler Steele

src/java.base/aix/classes/sun/nio/ch/DefaultPollerProvider.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 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 sun.nio.ch;
+
+import java.io.IOException;
+
+/**
+ * Default PollerProvider for AIX.
+ */
+class DefaultPollerProvider extends PollerProvider {
+    DefaultPollerProvider() { }
+
+    @Override
+    Poller readPoller() throws IOException {
+        return new PollsetPoller(true);
+    }
+
+    @Override
+    Poller writePoller() throws IOException {
+        return new PollsetPoller(false);
+    }
+}

src/java.base/aix/classes/sun/nio/ch/PollsetPoller.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 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 sun.nio.ch;
+
+import java.io.IOException;
+
+/**
+ * Poller implementation based on the AIX Pollset library.
+ */
+
+class PollsetPoller extends Poller {
+
+    PollsetPoller(boolean read) throws IOException {
+        super(read);
+    }
+
+    @Override
+    int fdVal() {
+        // Stub
+        throw new UnsupportedOperationException("Unimplemented on AIX");
+    }
+
+    @Override
+    void implRegister(int fdVal) throws IOException {
+        // Stub
+        throw new UnsupportedOperationException("Unimplemented on AIX");
+    }
+
+    @Override
+    void implDeregister(int fdVal) {
+        // Stub
+        throw new UnsupportedOperationException("Unimplemented on AIX");
+    }
+
+    @Override
+    int poll(int timeout) throws IOException {
+        // Stub
+        throw new UnsupportedOperationException("Unimplemented on AIX");
+    }
+}
+