8005013: Add NMT tests

Summary: Add tests for the Native Memory Tracking feature, includes regression tests for 8005936 and 8004802
Reviewed-by: zgu, coleenp

hotspot/test/TEST.ROOT

@@ -28,4 +28,4 @@
 # DO NOT EDIT without first contacting hotspot-regtest@sun.com
 
 # The list of keywords supported in this test suite
-keys=cte_test
+keys=cte_test jcmd nmt regression

hotspot/test/runtime/NMT/AllocTestType.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+/*
+ * @test
+ * @summary Test consistency of NMT by leaking a few select allocations of the Test type and then verify visibility with jcmd
+ * @key nmt jcmd
+ * @library /testlibrary
+ * @run compile -J-XX:+UnlockDiagnosticVMOptions -J-XX:+WhiteBoxAPI AllocTestType.java
+ * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail AllocTestType
+ */
+
+import com.oracle.java.testlibrary.*;
+import sun.hotspot.WhiteBox;
+
+public class AllocTestType {
+
+  public static void main(String args[]) throws Exception {
+    OutputAnalyzer output;
+
+    // Grab my own PID
+    String pid = Integer.toString(ProcessTools.getProcessId());
+    ProcessBuilder pb = new ProcessBuilder();
+
+    // Use WB API to alloc with the mtTest type
+    if (!WhiteBox.getWhiteBox().NMTAllocTest()) {
+      throw new Exception("Call to WB API NMTAllocTest() failed");
+    }
+
+    // Use WB API to ensure that all data has been merged before we continue
+    if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) {
+      throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
+    }
+
+    // Run 'jcmd <pid> VM.native_memory summary'
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary"});
+    output = new OutputAnalyzer(pb.start());
+    output.shouldContain("Test (reserved=512KB, committed=512KB)");
+
+    // Free the memory allocated by NMTAllocTest
+    if (!WhiteBox.getWhiteBox().NMTFreeTestMemory()) {
+      throw new Exception("Call to WB API NMTFreeTestMemory() failed");
+    }
+
+    // Use WB API to ensure that all data has been merged before we continue
+    if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) {
+      throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
+    }
+    output = new OutputAnalyzer(pb.start());
+    output.shouldNotContain("Test (reserved=");
+  }
+}

hotspot/test/runtime/NMT/BaselineWithParameter.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+/*
+ * @test
+ * @bug 8004802
+ * @key nmt jcmd regression
+ * @summary Regression test for invoking a jcmd with baseline=false, result was that the target VM crashed
+ * @library /testlibrary
+ * @run main/othervm -XX:NativeMemoryTracking=detail BaselineWithParameter
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class BaselineWithParameter {
+
+  public static void main(String args[]) throws Exception {
+    // Grab my own PID
+    String pid = Integer.toString(ProcessTools.getProcessId());
+    OutputAnalyzer output;
+
+    ProcessBuilder pb = new ProcessBuilder();
+
+    // Run 'jcmd <pid> VM.native_memory baseline=false'
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "baseline=false"});
+    pb.start();
+
+    // Run 'jcmd <pid> VM.native_memory summary=false'
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary=false"});
+    output = new OutputAnalyzer(pb.start());
+    output.shouldContain("No command to execute");
+
+  }
+}

hotspot/test/runtime/NMT/CommandLineDetail.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+ /*
+ * @test
+ * @key nmt
+ * @summary Running with NMT detail should not result in an error or warning
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class CommandLineDetail {
+
+  public static void main(String args[]) throws Exception {
+
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+      "-XX:NativeMemoryTracking=detail",
+      "-version");
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+    output.shouldNotContain("error");
+    output.shouldNotContain("warning");
+    output.shouldHaveExitValue(0);
+  }
+}

hotspot/test/runtime/NMT/CommandLineEmptyArgument.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+ /*
+ * @test
+ * @key nmt
+ * @summary Empty argument to NMT should result in an informative error message
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class CommandLineEmptyArgument {
+
+  public static void main(String args[]) throws Exception {
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:NativeMemoryTracking=");
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+    output.shouldContain("Syntax error, expecting -XX:NativeMemoryTracking=[off|summary|detail]");
+    output.shouldHaveExitValue(1);
+  }
+}

hotspot/test/runtime/NMT/CommandLineInvalidArgument.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+ /*
+ * @test
+ * @key nmt
+ * @summary Invalid argument to NMT should result in an informative error message
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class CommandLineInvalidArgument {
+
+  public static void main(String args[]) throws Exception {
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:NativeMemoryTracking=apa");
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+    output.shouldContain("Syntax error, expecting -XX:NativeMemoryTracking=[off|summary|detail]");
+    output.shouldHaveExitValue(1);
+  }
+}

hotspot/test/runtime/NMT/CommandLineSummary.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+ /*
+ * @test
+ * @key nmt
+ * @summary Running with NMT summary should not result in an error or warning
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class CommandLineSummary {
+
+  public static void main(String args[]) throws Exception {
+
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+      "-XX:NativeMemoryTracking=summary",
+      "-version");
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+    output.shouldNotContain("error");
+    output.shouldNotContain("warning");
+    output.shouldHaveExitValue(0);
+  }
+}

hotspot/test/runtime/NMT/CommandLineTurnOffNMT.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+ /*
+ * @test
+ * @key nmt
+ * @summary Turning off NMT should not result in an error or warning
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class CommandLineTurnOffNMT {
+
+  public static void main(String args[]) throws Exception {
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+              "-XX:NativeMemoryTracking=off",
+              "-version");
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+    output.shouldNotContain("error");
+    output.shouldNotContain("warning");
+    output.shouldHaveExitValue(0);
+  }
+}

hotspot/test/runtime/NMT/JcmdScale.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+/*
+ * @test
+ * @key nmt jcmd
+ * @summary Test the NMT scale parameter
+ * @library /testlibrary
+ * @run main/othervm -XX:NativeMemoryTracking=summary JcmdScale
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class JcmdScale {
+
+  public static void main(String args[]) throws Exception {
+    ProcessBuilder pb = new ProcessBuilder();
+    OutputAnalyzer output;
+    // Grab my own PID
+    String pid = Integer.toString(ProcessTools.getProcessId());
+
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "scale=KB"});
+    output = new OutputAnalyzer(pb.start());
+    output.shouldContain("KB,  committed=");
+
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "scale=MB"});
+    output = new OutputAnalyzer(pb.start());
+    output.shouldContain("MB,  committed=");
+
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "scale=GB"});
+    output = new OutputAnalyzer(pb.start());
+    output.shouldContain("GB,  committed=");
+
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "scale=apa"});
+    output = new OutputAnalyzer(pb.start());
+    output.shouldContain("Incorrect scale value: apa");
+
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=GB"});
+    output = new OutputAnalyzer(pb.start());
+    output.shouldContain("GB,  committed=");
+
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=apa"});
+    output = new OutputAnalyzer(pb.start());
+    output.shouldContain("Incorrect scale value: apa");
+
+  }
+}

hotspot/test/runtime/NMT/JcmdWithNMTDisabled.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+/*
+ * @test
+ * @key nmt jcmd
+ * @summary Verify that jcmd correctly reports that NMT is not enabled
+ * @library /testlibrary
+ * First run without enabling NMT
+ * @run main/othervm JcmdWithNMTDisabled
+ * Then run with explicitly disabling NMT, should not be any difference
+ * @run main/othervm -XX:NativeMemoryTracking=off JcmdWithNMTDisabled
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class JcmdWithNMTDisabled {
+  static ProcessBuilder pb = new ProcessBuilder();
+  static String pid;
+
+  public static void main(String args[]) throws Exception {
+    // Grab my own PID
+    pid = Integer.toString(ProcessTools.getProcessId());
+
+    jcmdCommand("summary");
+    jcmdCommand("detail");
+    jcmdCommand("baseline");
+    jcmdCommand("summary.diff");
+    jcmdCommand("detail.diff");
+    jcmdCommand("scale=GB");
+    jcmdCommand("shutdown");
+  }
+
+  // Helper method for invoking different jcmd calls, all should fail with the same message saying NMT is not enabled
+  public static void jcmdCommand(String command) throws Exception {
+
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", command});
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+
+    // Verify that jcmd reports that NMT is not enabled
+    output.shouldContain("Native memory tracking is not enabled");
+  }
+}

hotspot/test/runtime/NMT/PrintNMTStatistics.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+/*
+ * @test
+ * @key nmt regression
+ * @bug 8005936
+ * @summary Make sure PrintNMTStatistics works on normal JVM exit
+ * @library /testlibrary
+ * @run compile -J-XX:+UnlockDiagnosticVMOptions -J-XX:+WhiteBoxAPI PrintNMTStatistics.java
+ */
+
+import com.oracle.java.testlibrary.*;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import sun.hotspot.WhiteBox;
+
+public class PrintNMTStatistics {
+
+  public static void main(String args[]) throws Exception {
+
+    // We start a new java process running with an argument and use WB API to ensure
+    // we have data for NMT on VM exit
+    if (args.length > 0) {
+      // Use WB API to ensure that all data has been merged before we continue
+      if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) {
+        throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
+      }
+      return;
+    }
+
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+        "-XX:+UnlockDiagnosticVMOptions",
+        "-XX:NativeMemoryTracking=summary",
+        "+XX:+PrintNMTStatistics",
+        "PrintNMTStatistics",
+        "test");
+
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+    output.shouldContain("Java Heap  (reserved=");
+    output.shouldNotContain("error");
+    output.shouldNotContain("warning");
+    output.shouldHaveExitValue(0);
+  }
+}

hotspot/test/runtime/NMT/PrintNMTStatisticsWithNMTDisabled.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+ /*
+ * @test
+ * @key nmt
+ * @summary Trying to enable PrintNMTStatistics should result in a warning
+ * @library /testlibrary
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class PrintNMTStatisticsWithNMTDisabled {
+
+  public static void main(String args[]) throws Exception {
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+      "-XX:+UnlockDiagnosticVMOptions",
+      "-XX:+PrintNMTStatistics",
+      "-version");
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+    output.shouldContain("warning: PrintNMTStatistics is disabled, because native memory tracking is not enabled");
+    output.shouldHaveExitValue(0);
+  }
+}

hotspot/test/runtime/NMT/ShutdownTwice.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+/*
+ * @test
+ * @key nmt jcmd
+ * @summary Run shutdown twice
+ * @library /testlibrary
+ * @run main/othervm -XX:NativeMemoryTracking=detail ShutdownTwice
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class ShutdownTwice {
+
+  public static void main(String args[]) throws Exception {
+    // Grab my own PID
+    String pid = Integer.toString(ProcessTools.getProcessId());
+    OutputAnalyzer output;
+
+    ProcessBuilder pb = new ProcessBuilder();
+
+    // Run 'jcmd <pid> VM.native_memory shutdown'
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "shutdown"});
+    output = new OutputAnalyzer(pb.start());
+
+    // Verify that jcmd reports that NMT is shutting down
+    output.shouldContain("Shutdown is in progress, it will take a few moments to completely shutdown");
+
+    // Run shutdown again
+    output = new OutputAnalyzer(pb.start());
+
+    // Verify that jcmd reports that NMT has been shutdown already
+    output.shouldContain("Native memory tracking has been shutdown by user");
+  }
+}

hotspot/test/runtime/NMT/SummaryAfterShutdown.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+/*
+ * @test
+ * @key nmt jcmd
+ * @summary Verify that jcmd correctly reports that NMT is not enabled after a shutdown
+ * @library /testlibrary
+ * @run main/othervm -XX:NativeMemoryTracking=detail SummaryAfterShutdown
+ */
+
+import com.oracle.java.testlibrary.*;
+
+public class SummaryAfterShutdown {
+
+  public static void main(String args[]) throws Exception {
+    OutputAnalyzer output;
+    // Grab my own PID
+    String pid = Integer.toString(ProcessTools.getProcessId());
+    ProcessBuilder pb = new ProcessBuilder();
+
+    // Run 'jcmd <pid> VM.native_memory shutdown'
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "shutdown"});
+    output = new OutputAnalyzer(pb.start());
+
+    // Verify that jcmd reports that NMT is shutting down
+    output.shouldContain("Shutdown is in progress, it will take a few moments to completely shutdown");
+
+    // Run 'jcmd <pid> VM.native_memory summary'
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary"});
+    output = new OutputAnalyzer(pb.start());
+
+    // Verify that jcmd reports that NMT has been shutdown
+    output.shouldContain("Native memory tracking has been shutdown by user");
+  }
+}

hotspot/test/runtime/NMT/SummarySanityCheck.java

+/*
+ * Copyright (c) 2013, 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.
+ */
+
+/*
+ * @test
+ * @key nmt jcmd
+ * @summary Sanity check the output of NMT
+ * @library /testlibrary
+ * @run compile -J-XX:+UnlockDiagnosticVMOptions -J-XX:+WhiteBoxAPI SummarySanityCheck.java
+ * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:NativeMemoryTracking=summary -XX:+WhiteBoxAPI SummarySanityCheck
+ */
+
+import com.oracle.java.testlibrary.*;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import sun.hotspot.WhiteBox;
+
+public class SummarySanityCheck {
+
+  private static String jcmdout;
+  public static void main(String args[]) throws Exception {
+    // Grab my own PID
+    String pid = Integer.toString(ProcessTools.getProcessId());
+
+    // Use WB API to ensure that all data has been merged before we continue
+    if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) {
+      throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
+    }
+
+    ProcessBuilder pb = new ProcessBuilder();
+
+    // Run  'jcmd <pid> VM.native_memory summary scale=KB'
+    pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=KB"});
+    OutputAnalyzer output = new OutputAnalyzer(pb.start());
+
+    jcmdout = output.getOutput();
+    // Split by '-' to get the 'groups'
+    String[] lines = jcmdout.split("\n");
+
+    if (lines.length == 0) {
+      throwTestException("Failed to parse jcmd output");
+    }
+
+    int totalCommitted = 0, totalReserved = 0;
+    int totalCommittedSum = 0, totalReservedSum = 0;
+
+    // Match '- <mtType> (reserved=<reserved>KB, committed=<committed>KB)
+    Pattern mtTypePattern = Pattern.compile("-\\s+(?<typename>[\\w\\s]+)\\(reserved=(?<reserved>\\d+)KB,\\scommitted=(?<committed>\\d+)KB\\)");
+    // Match 'Total: reserved=<reserved>KB, committed=<committed>KB'
+    Pattern totalMemoryPattern = Pattern.compile("Total\\:\\s\\sreserved=(?<reserved>\\d+)KB,\\s\\scommitted=(?<committed>\\d+)KB");
+
+    for (int i = 0; i < lines.length; i++) {
+      if (lines[i].startsWith("Total")) {
+        Matcher totalMemoryMatcher = totalMemoryPattern.matcher(lines[i]);
+
+        if (totalMemoryMatcher.matches() && totalMemoryMatcher.groupCount() == 2) {
+          totalCommitted = Integer.parseInt(totalMemoryMatcher.group("committed"));
+          totalReserved = Integer.parseInt(totalMemoryMatcher.group("reserved"));
+        } else {
+          throwTestException("Failed to match the expected groups in 'Total' memory part");
+        }
+      } else if (lines[i].startsWith("-")) {
+        Matcher typeMatcher = mtTypePattern.matcher(lines[i]);
+        if (typeMatcher.matches()) {
+          int typeCommitted = Integer.parseInt(typeMatcher.group("committed"));
+          int typeReserved = Integer.parseInt(typeMatcher.group("reserved"));
+
+          // Make sure reserved is always less or equals
+          if (typeCommitted > typeReserved) {
+            throwTestException("Committed (" + typeCommitted + ") was more than Reserved ("
+                + typeReserved + ") for mtType: " + typeMatcher.group("typename"));
+          }
+
+          // Add to total and compare them in the end
+          totalCommittedSum += typeCommitted;
+          totalReservedSum += typeReserved;
+        } else {
+          throwTestException("Failed to match the group on line " + i);
+        }
+      }
+    }
+
+    // See if they add up correctly, rounding is a problem so make sure we're within +/- 8KB
+    int committedDiff = totalCommitted - totalCommittedSum;
+    if (committedDiff > 8 || committedDiff < -8) {
+      throwTestException("Total committed (" + totalCommitted + ") did not match the summarized committed (" + totalCommittedSum + ")" );
+    }
+
+    int reservedDiff = totalReserved - totalReservedSum;
+    if (reservedDiff > 8 || reservedDiff < -8) {
+      throwTestException("Total reserved (" + totalReserved + ") did not match the summarized reserved (" + totalReservedSum + ")" );
+    }
+  }
+
+  private static void throwTestException(String reason) throws Exception {
+      throw new Exception(reason + " . Stdout is :\n" + jcmdout);
+  }
+}