1 files changed, 98 insertions, 0 deletions
diff --git a/test/testlibrary/whitebox/sun/hotspot/cpuinfo/CPUInfo.java b/test/testlibrary/whitebox/sun/hotspot/cpuinfo/CPUInfo.java
new file mode 100644
index 000000000..8532573a9
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+++ b/test/testlibrary/whitebox/sun/hotspot/cpuinfo/CPUInfo.java
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2014, 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.
+ *
+ * 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.hotspot.cpuinfo;
+
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+
+import sun.hotspot.WhiteBox;
+
+/**
+ * Information about CPU on test box.
+ *
+ * CPUInfo uses WhiteBox to gather information,
+ * so WhiteBox class should be added to bootclasspath
+ * and option -XX:+WhiteBoxAPI should expclicetly
+ * specified on command line.
+ */
+public class CPUInfo {
+
+    private static final List<String> features;
+    private static final String additionalCPUInfo;
+
+    static {
+        WhiteBox wb = WhiteBox.getWhiteBox();
+
+        Pattern additionalCPUInfoRE =
+            Pattern.compile("([^(]*\\([^)]*\\)[^,]*),\\s*");
+
+        String cpuFeaturesString = wb.getCPUFeatures();
+        Matcher matcher = additionalCPUInfoRE.matcher(cpuFeaturesString);
+        if (matcher.find()) {
+            additionalCPUInfo = matcher.group(1);
+        } else {
+            additionalCPUInfo = "";
+        }
+        String splittedFeatures[] = matcher.replaceAll("").split("(, )| ");
+
+        features = Collections.unmodifiableList(Arrays.
+                                                asList(splittedFeatures));
+    }
+
+    /**
+     * Get additional information about CPU.
+     * For example, on X86 in will be family/model/stepping
+     * and number of cores.
+     *
+     * @return additional CPU info
+     */
+    public static String getAdditionalCPUInfo() {
+        return additionalCPUInfo;
+    }
+
+    /**
+     * Get all known features supported by CPU.
+     *
+     * @return unmodifiable list with names of all known features
+     *         supported by CPU.
+     */
+    public static List<String> getFeatures() {
+        return features;
+    }
+
+    /**
+     * Check if some feature is supported by CPU.
+     *
+     * @param feature Name of feature to be tested.
+     * @return <b>true</b> if tested feature is supported by CPU.
+     */
+    public static boolean hasFeature(String feature) {
+        return features.contains(feature.toLowerCase());
+    }
+}