--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/com/sun/management/OperatingSystemMXBean/GetFreeSwapSpaceSize.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2003-2004 Sun Microsystems, Inc.  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.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug     4858522
+ * @summary Basic unit test of OperatingSystemMXBean.getFreeSwapSpaceSize()
+ * @author  Steve Bohne
+ */
+
+/*
+ * This test is just a sanity check and does not check for the correct
+ * value.  The correct value should be checked manually:
+ * Solaris:
+ *   1. In a shell, enter the command: "swap -l"
+ *   2. The value (reported in blocks) is in the "free" column.
+ * Linux:
+ *   1. In a shell, enter the command: "cat /proc/meminfo"
+ *   2. The value (reported in bytes) is in "Swap" entry, "free" column.
+ * Windows NT/XP/2000:
+ *   Unknown.
+ * Windows 98/ME:
+ *   Unknown.
+ */
+
+import com.sun.management.OperatingSystemMXBean;
+import java.lang.management.*;
+
+public class GetFreeSwapSpaceSize {
+
+    private static OperatingSystemMXBean mbean =
+        (com.sun.management.OperatingSystemMXBean)
+        ManagementFactory.getOperatingSystemMXBean();
+
+    // Careful with these values.
+    // Min size is zero since the system can run of swap spaces
+    private static final long MIN_SIZE_FOR_PASS = 0;
+    // Max size for pass dynamically determined below.
+    private static long       max_size_for_pass = Long.MAX_VALUE;
+
+    private static boolean trace = false;
+
+    public static void main(String args[]) throws Exception {
+        if (args.length > 0 && args[0].equals("trace")) {
+            trace = true;
+        }
+
+        long max_size = mbean.getTotalSwapSpaceSize();
+        if (max_size > 0) {
+            max_size_for_pass = max_size;
+        }
+
+        long size = mbean.getFreeSwapSpaceSize();
+
+        if (trace) {
+            System.out.println("Free swap space size in bytes: " + size);
+        }
+
+        if (size < MIN_SIZE_FOR_PASS || size > max_size_for_pass) {
+            throw new RuntimeException("Free swap space size " +
+                                       "illegal value: " + size + " bytes " +
+                                       "(MIN = " + MIN_SIZE_FOR_PASS + "; " +
+                                       "MAX = " + max_size_for_pass + ")");
+        }
+
+        System.out.println("Test passed.");
+    }
+}