changeset 1275:3dd628fde208 jdk9-b45

Merge
author lana
date Thu, 01 Jan 2015 16:09:41 -0800
parents 1510f6e52044 7063bdada583
children e02ca92c8502 7588c9eee1bf
files
diffstat 7 files changed, 707 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/lib/Makefile	Thu Jan 01 16:09:41 2015 -0800
@@ -0,0 +1,65 @@
+#
+# Copyright (c) 2013, 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.
+#
+
+# Utility Makefile that creates wb.jar, which is used to simplify using 
+# the Whitebox API outside the jtreg-testbase.
+
+ifneq "x$(ALT_BOOTDIR)" "x"
+	BOOTDIR := $(ALT_BOOTDIR)
+endif
+
+ifeq "x$(BOOTDIR)" "x"
+	JDK_HOME := $(shell dirname $(shell which java))/..
+else
+	JDK_HOME := $(BOOTDIR)
+endif
+
+SRC_DIR = ./
+BUILD_DIR = build
+OUTPUT_DIR = $(BUILD_DIR)/classes
+
+JAVAC = $(JDK_HOME)/bin/javac
+JAR = $(JDK_HOME)/bin/jar
+
+SRC_FILES = $(shell find $(SRC_DIR) -name '*.java')
+
+.PHONY: filelist clean cleantmp
+
+all: wb.jar cleantmp
+
+wb.jar: filelist
+	@mkdir -p $(OUTPUT_DIR)
+	$(JAVAC) -sourcepath $(SRC_DIR) -d $(OUTPUT_DIR) -cp $(OUTPUT_DIR) @filelist
+	$(JAR) cf wb.jar -C $(OUTPUT_DIR) .
+	@rm -rf $(OUTPUT_DIR)
+
+filelist: $(SRC_FILES)
+	@rm -f $@
+	@echo $(SRC_FILES) > $@
+
+clean: cleantmp
+	@rm -rf wb.jar
+
+cleantmp:
+	@rm -rf filelist
+	@rm -rf $(BUILD_DIR)
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/lib/sun/hotspot/WhiteBox.java	Thu Jan 01 16:09:41 2015 -0800
@@ -0,0 +1,254 @@
+/*
+ * Copyright (c) 2012, 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;
+
+import java.lang.reflect.Executable;
+import java.util.Arrays;
+import java.util.List;
+import java.util.function.Function;
+import java.util.stream.Stream;
+import java.security.BasicPermission;
+
+import sun.hotspot.parser.DiagnosticCommand;
+
+public class WhiteBox {
+
+  @SuppressWarnings("serial")
+  public static class WhiteBoxPermission extends BasicPermission {
+    public WhiteBoxPermission(String s) {
+      super(s);
+    }
+  }
+
+  private WhiteBox() {}
+  private static final WhiteBox instance = new WhiteBox();
+  private static native void registerNatives();
+
+  /**
+   * Returns the singleton WhiteBox instance.
+   *
+   * The returned WhiteBox object should be carefully guarded
+   * by the caller, since it can be used to read and write data
+   * at arbitrary memory addresses. It must never be passed to
+   * untrusted code.
+   */
+  public synchronized static WhiteBox getWhiteBox() {
+    SecurityManager sm = System.getSecurityManager();
+    if (sm != null) {
+      sm.checkPermission(new WhiteBoxPermission("getInstance"));
+    }
+    return instance;
+  }
+
+  static {
+    registerNatives();
+  }
+
+  // Get the maximum heap size supporting COOPs
+  public native long getCompressedOopsMaxHeapSize();
+  // Arguments
+  public native void printHeapSizes();
+
+  // Memory
+  public native long getObjectAddress(Object o);
+  public native int  getHeapOopSize();
+  public native int  getVMPageSize();
+  public native boolean isObjectInOldGen(Object o);
+  public native long getObjectSize(Object o);
+
+  // Runtime
+  // Make sure class name is in the correct format
+  public boolean isClassAlive(String name) {
+    return isClassAlive0(name.replace('.', '/'));
+  }
+  private native boolean isClassAlive0(String name);
+
+  // JVMTI
+  public native void addToBootstrapClassLoaderSearch(String segment);
+  public native void addToSystemClassLoaderSearch(String segment);
+
+  // G1
+  public native boolean g1InConcurrentMark();
+  public native boolean g1IsHumongous(Object o);
+  public native long    g1NumFreeRegions();
+  public native int     g1RegionSize();
+  public native Object[]    parseCommandLine(String commandline, char delim, DiagnosticCommand[] args);
+
+  // NMT
+  public native long NMTMalloc(long size);
+  public native void NMTFree(long mem);
+  public native long NMTReserveMemory(long size);
+  public native void NMTCommitMemory(long addr, long size);
+  public native void NMTUncommitMemory(long addr, long size);
+  public native void NMTReleaseMemory(long addr, long size);
+  public native long NMTMallocWithPseudoStack(long size, int index);
+  public native boolean NMTIsDetailSupported();
+  public native boolean NMTChangeTrackingLevel();
+  public native int NMTGetHashSize();
+
+  // Compiler
+  public native int     deoptimizeFrames(boolean makeNotEntrant);
+  public native void    deoptimizeAll();
+  public        boolean isMethodCompiled(Executable method) {
+    return isMethodCompiled(method, false /*not osr*/);
+  }
+  public native boolean isMethodCompiled(Executable method, boolean isOsr);
+  public        boolean isMethodCompilable(Executable method) {
+    return isMethodCompilable(method, -1 /*any*/);
+  }
+  public        boolean isMethodCompilable(Executable method, int compLevel) {
+    return isMethodCompilable(method, compLevel, false /*not osr*/);
+  }
+  public native boolean isMethodCompilable(Executable method, int compLevel, boolean isOsr);
+  public native boolean isMethodQueuedForCompilation(Executable method);
+  public        int     deoptimizeMethod(Executable method) {
+    return deoptimizeMethod(method, false /*not osr*/);
+  }
+  public native int     deoptimizeMethod(Executable method, boolean isOsr);
+  public        void    makeMethodNotCompilable(Executable method) {
+    makeMethodNotCompilable(method, -1 /*any*/);
+  }
+  public        void    makeMethodNotCompilable(Executable method, int compLevel) {
+    makeMethodNotCompilable(method, compLevel, false /*not osr*/);
+  }
+  public native void    makeMethodNotCompilable(Executable method, int compLevel, boolean isOsr);
+  public        int     getMethodCompilationLevel(Executable method) {
+    return getMethodCompilationLevel(method, false /*not ost*/);
+  }
+  public native int     getMethodCompilationLevel(Executable method, boolean isOsr);
+  public native boolean testSetDontInlineMethod(Executable method, boolean value);
+  public        int     getCompileQueuesSize() {
+    return getCompileQueueSize(-1 /*any*/);
+  }
+  public native int     getCompileQueueSize(int compLevel);
+  public native boolean testSetForceInlineMethod(Executable method, boolean value);
+  public        boolean enqueueMethodForCompilation(Executable method, int compLevel) {
+    return enqueueMethodForCompilation(method, compLevel, -1 /*InvocationEntryBci*/);
+  }
+  public native boolean enqueueMethodForCompilation(Executable method, int compLevel, int entry_bci);
+  public native void    clearMethodState(Executable method);
+  public native void    lockCompilation();
+  public native void    unlockCompilation();
+  public native int     getMethodEntryBci(Executable method);
+  public native Object[] getNMethod(Executable method, boolean isOsr);
+  public native long    allocateCodeBlob(int size, int type);
+  public        long    allocateCodeBlob(long size, int type) {
+      int intSize = (int) size;
+      if ((long) intSize != size || size < 0) {
+          throw new IllegalArgumentException(
+                "size argument has illegal value " + size);
+      }
+      return allocateCodeBlob( intSize, type);
+  }
+  public native void    freeCodeBlob(long addr);
+  public        void    forceNMethodSweep() {
+    try {
+        forceNMethodSweep0().join();
+    } catch (InterruptedException e) {
+        Thread.currentThread().interrupt();
+    }
+  }
+  public native Thread  forceNMethodSweep0();
+  public native Object[] getCodeHeapEntries(int type);
+  public native int     getCompilationActivityMode();
+  public native Object[] getCodeBlob(long addr);
+
+  // Intered strings
+  public native boolean isInStringTable(String str);
+
+  // Memory
+  public native void readReservedMemory();
+  public native long allocateMetaspace(ClassLoader classLoader, long size);
+  public native void freeMetaspace(ClassLoader classLoader, long addr, long size);
+  public native long incMetaspaceCapacityUntilGC(long increment);
+  public native long metaspaceCapacityUntilGC();
+
+  // Force Young GC
+  public native void youngGC();
+
+  // Force Full GC
+  public native void fullGC();
+
+  // Method tries to start concurrent mark cycle.
+  // It returns false if CM Thread is always in concurrent cycle.
+  public native boolean g1StartConcMarkCycle();
+
+  // Tests on ReservedSpace/VirtualSpace classes
+  public native int stressVirtualSpaceResize(long reservedSpaceSize, long magnitude, long iterations);
+  public native void runMemoryUnitTests();
+  public native void readFromNoaccessArea();
+  public native long getThreadStackSize();
+  public native long getThreadRemainingStackSize();
+
+  // CPU features
+  public native String getCPUFeatures();
+
+  // Native extensions
+  public native long getHeapUsageForContext(int context);
+  public native long getHeapRegionCountForContext(int context);
+  public native int getContextForObject(Object obj);
+  public native void printRegionInfo(int context);
+
+  // VM flags
+  public native boolean isConstantVMFlag(String name);
+  public native boolean isLockedVMFlag(String name);
+  public native void    setBooleanVMFlag(String name, boolean value);
+  public native void    setIntxVMFlag(String name, long value);
+  public native void    setUintxVMFlag(String name, long value);
+  public native void    setUint64VMFlag(String name, long value);
+  public native void    setSizeTVMFlag(String name, long value);
+  public native void    setStringVMFlag(String name, String value);
+  public native void    setDoubleVMFlag(String name, double value);
+  public native Boolean getBooleanVMFlag(String name);
+  public native Long    getIntxVMFlag(String name);
+  public native Long    getUintxVMFlag(String name);
+  public native Long    getUint64VMFlag(String name);
+  public native Long    getSizeTVMFlag(String name);
+  public native String  getStringVMFlag(String name);
+  public native Double  getDoubleVMFlag(String name);
+  private final List<Function<String,Object>> flagsGetters = Arrays.asList(
+    this::getBooleanVMFlag, this::getIntxVMFlag, this::getUintxVMFlag,
+    this::getUint64VMFlag, this::getSizeTVMFlag, this::getStringVMFlag,
+    this::getDoubleVMFlag);
+
+  public Object getVMFlag(String name) {
+    return flagsGetters.stream()
+                       .map(f -> f.apply(name))
+                       .filter(x -> x != null)
+                       .findAny()
+                       .orElse(null);
+  }
+  public native int getOffsetForName0(String name);
+  public int getOffsetForName(String name) throws Exception {
+    int offset = getOffsetForName0(name);
+    if (offset == -1) {
+      throw new RuntimeException(name + " not found");
+    }
+    return offset;
+  }
+
+  // Safepoint Checking
+  public native void assertMatchingSafepointCalls(boolean mutexSafepointValue, boolean attemptedNoSafepointValue);
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/lib/sun/hotspot/code/BlobType.java	Thu Jan 01 16:09:41 2015 -0800
@@ -0,0 +1,90 @@
+/*
+ * 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.code;
+
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryPoolMXBean;
+import java.util.EnumSet;
+
+import sun.hotspot.WhiteBox;
+
+public enum BlobType {
+    // Execution level 1 and 4 (non-profiled) nmethods (including native nmethods)
+    MethodNonProfiled(0, "CodeHeap 'non-profiled nmethods'"),
+    // Execution level 2 and 3 (profiled) nmethods
+    MethodProfiled(1, "CodeHeap 'profiled nmethods'"),
+    // Non-nmethods like Buffers, Adapters and Runtime Stubs
+    NonNMethod(2, "CodeHeap 'non-nmethods'") {
+        @Override
+        public boolean allowTypeWhenOverflow(BlobType type) {
+            return super.allowTypeWhenOverflow(type)
+                    || type == BlobType.MethodNonProfiled;
+        }
+    },
+    // All types (No code cache segmentation)
+    All(3, "CodeCache");
+
+    public final int id;
+    private final String beanName;
+
+    private BlobType(int id, String beanName) {
+        this.id = id;
+        this.beanName = beanName;
+    }
+
+    public MemoryPoolMXBean getMemoryPool() {
+        for (MemoryPoolMXBean bean : ManagementFactory.getMemoryPoolMXBeans()) {
+            String name = bean.getName();
+            if (beanName.equals(name)) {
+                return bean;
+            }
+        }
+        return null;
+    }
+
+    public boolean allowTypeWhenOverflow(BlobType type) {
+        return type == this;
+    }
+
+    public static EnumSet<BlobType> getAvailable() {
+        WhiteBox whiteBox = WhiteBox.getWhiteBox();
+        if (!whiteBox.getBooleanVMFlag("SegmentedCodeCache")) {
+            // only All for non segmented world
+            return EnumSet.of(All);
+        }
+        if (System.getProperty("java.vm.info").startsWith("interpreted ")) {
+            // only NonNMethod for -Xint
+            return EnumSet.of(NonNMethod);
+        }
+
+        EnumSet<BlobType> result = EnumSet.complementOf(EnumSet.of(All));
+        if (!whiteBox.getBooleanVMFlag("TieredCompilation")
+                || whiteBox.getIntxVMFlag("TieredStopAtLevel") <= 1) {
+            // there is no MethodProfiled in non tiered world or pure C1
+            result.remove(MethodProfiled);
+        }
+        return result;
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/lib/sun/hotspot/code/CodeBlob.java	Thu Jan 01 16:09:41 2015 -0800
@@ -0,0 +1,68 @@
+/*
+ * 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.code;
+
+import sun.hotspot.WhiteBox;
+
+public class CodeBlob {
+  private static final WhiteBox WB = WhiteBox.getWhiteBox();
+  public static CodeBlob[] getCodeBlobs(BlobType type) {
+    Object[] obj = WB.getCodeHeapEntries(type.id);
+    if (obj == null) {
+      return null;
+    }
+    CodeBlob[] result = new CodeBlob[obj.length];
+    for (int i = 0, n = result.length; i < n; ++i) {
+      result[i] = new CodeBlob((Object[]) obj[i]);
+    }
+    return result;
+  }
+  public static CodeBlob getCodeBlob(long addr) {
+    Object[] obj = WB.getCodeBlob(addr);
+    if (obj == null) {
+      return null;
+    }
+    return new CodeBlob(obj);
+  }
+  protected CodeBlob(Object[] obj) {
+    assert obj.length == 3;
+    name = (String) obj[0];
+    size = (Integer) obj[1];
+    code_blob_type = BlobType.values()[(Integer) obj[2]];
+    assert code_blob_type.id == (Integer) obj[2];
+  }
+  public final String name;
+  public final int size;
+  public final BlobType code_blob_type;
+
+  @Override
+  public String toString() {
+    return "CodeBlob{"
+        + "name=" + name
+        + ", size=" + size
+        + ", code_blob_type=" + code_blob_type
+        + '}';
+  }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/lib/sun/hotspot/code/NMethod.java	Thu Jan 01 16:09:41 2015 -0800
@@ -0,0 +1,56 @@
+/*
+ * 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.code;
+
+import java.lang.reflect.Executable;
+import sun.hotspot.WhiteBox;
+
+public class NMethod extends CodeBlob {
+  private static final WhiteBox wb = WhiteBox.getWhiteBox();
+  public static NMethod get(Executable method, boolean isOsr) {
+    Object[] obj = wb.getNMethod(method, isOsr);
+    return obj == null ? null : new NMethod(obj);
+  }
+  private NMethod(Object[] obj) {
+    super((Object[])obj[0]);
+    assert obj.length == 4;
+    comp_level = (Integer) obj[1];
+    insts = (byte[]) obj[2];
+    compile_id = (Integer) obj[3];
+  }
+  public final byte[] insts;
+  public final int comp_level;
+  public final int compile_id;
+
+  @Override
+  public String toString() {
+    return "NMethod{"
+        + super.toString()
+        + ", insts=" + insts
+        + ", comp_level=" + comp_level
+        + ", compile_id=" + compile_id
+        + '}';
+  }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/lib/sun/hotspot/cpuinfo/CPUInfo.java	Thu Jan 01 16:09:41 2015 -0800
@@ -0,0 +1,97 @@
+/*
+ * 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.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());
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/lib/sun/hotspot/parser/DiagnosticCommand.java	Thu Jan 01 16:09:41 2015 -0800
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2012, 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.parser;
+
+public class DiagnosticCommand {
+
+    public enum DiagnosticArgumentType {
+        JLONG, BOOLEAN, STRING, NANOTIME, STRINGARRAY, MEMORYSIZE
+    }
+
+    private String name;
+    private String desc;
+    private DiagnosticArgumentType type;
+    private boolean mandatory;
+    private String defaultValue;
+    private boolean argument;
+
+    public DiagnosticCommand(String name, String desc, DiagnosticArgumentType type,
+            boolean mandatory, String defaultValue) {
+        this(name, desc, type, false, mandatory, defaultValue);
+    }
+
+    public DiagnosticCommand(String name, String desc, DiagnosticArgumentType type,
+            boolean argument, boolean mandatory, String defaultValue) {
+        this.name = name;
+        this.desc = desc;
+        this.type = type;
+        this.mandatory = mandatory;
+        this.defaultValue = defaultValue;
+        this.argument = argument;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getDesc() {
+        return desc;
+    }
+
+    public DiagnosticArgumentType getType() {
+        return type;
+    }
+
+    public boolean isMandatory() {
+        return mandatory;
+    }
+
+    public boolean isArgument() {
+        return argument;
+    }
+
+    public String getDefaultValue() {
+        return defaultValue;
+    }
+}