8041979: sun/jvmstat/monitor/MonitoredVm/CR6672135.java failing on all platforms

Reviewed-by: kamg, mgronlun

make/mapfiles/libjava/mapfile-vers

@@ -277,7 +277,8 @@ SUNWprivate_1.1 {
 		Java_sun_misc_VM_latestUserDefinedLoader;
                 Java_sun_misc_VM_initialize;
 		Java_sun_misc_VMSupport_initAgentProperties;
-
+		Java_sun_misc_VMSupport_getVMTemporaryDirectory;
+		
                 # ZipFile.c needs this one
 		throwFileNotFoundException;
 

src/share/classes/sun/jvmstat/perfdata/monitor/protocol/local/PerfDataFile.java

@@ -233,8 +233,6 @@ public class PerfDataFile {
      *               does not conform to the expected pattern
      */
     public static int getLocalVmId(File file) {
-        int lvmid = 0;
-
         try {
             // try 1.4.2 and later format first
             return Integer.parseInt(file.getName());
@@ -287,31 +285,13 @@ public class PerfDataFile {
         return tmpDirName + dirNamePrefix + user + File.separator;
     }
 
-    /*
-     * this static initializer would not be necessary if the
-     * Solaris java.io.tmpdir property were set to /tmp by default
-     */
     static {
         /*
-         * Why is java.io.tmpdir on Solaris set to "/var/tmp/" when the
-         * HotSpot JVM os:get_temp_path() method returns "/tmp/"
-         *
-         * Why do Solaris and Windows return a string with a trailing
-         * file separator character where as Linix does not? (this change
-         * seems to have occurred sometime during hopper beta)
+         * For this to work, the target VM and this code need to use
+         * the same directory. Instead of guessing which directory the
+         * VM is using, we will ask.
          */
-        String tmpdir = System.getProperty("java.io.tmpdir");
-
-        if (tmpdir.compareTo("/var/tmp/") == 0) {
-             /*
-              * shared memory files are created in /tmp. Interestingly,
-              * java.io.tmpdir is set to "/var/tmp/" on Solaris and Linux,
-              * but os::get_temp_directory() is set to "/tmp/" on these
-              * platforms. the java.io.logging packages also makes reference
-              * to java.io.tmpdir.
-              */
-             tmpdir = "/tmp/";
-        }
+        String tmpdir = sun.misc.VMSupport.getVMTemporaryDirectory();
 
         /*
          * Assure that the string returned has a trailing File.separator

src/share/classes/sun/misc/VMSupport.java

@@ -97,4 +97,14 @@ public class VMSupport {
             throw new RuntimeException(ioe.getMessage());
         }
     }
+
+    /*
+     * Return the temporary directory that the VM uses for the attach
+     * and perf data files.
+     *
+     * It is important that this directory is well-known and the
+     * same for all VM instances. It cannot be affected by configuration
+     * variables such as java.io.tmpdir.
+     */
+    public static native String getVMTemporaryDirectory();
 }

src/share/javavm/export/jvm.h

@@ -1331,6 +1331,9 @@ JVM_GetManagement(jint version);
 JNIEXPORT jobject JNICALL
 JVM_InitAgentProperties(JNIEnv *env, jobject agent_props);
 
+JNIEXPORT jstring JNICALL
+JVM_GetTemporaryDirectory(JNIEnv *env);
+
 /* Generics reflection support.
  *
  * Returns information about the given class's EnclosingMethod

src/share/native/sun/misc/VMSupport.c

@@ -53,3 +53,9 @@ Java_sun_misc_VMSupport_initAgentProperties(JNIEnv *env, jclass cls, jobject pro
     }
     return (*InitAgentProperties_fp)(env, props);
 }
+
+JNIEXPORT jstring JNICALL
+Java_sun_misc_VMSupport_getVMTemporaryDirectory(JNIEnv *env, jclass cls)
+{
+    return JVM_GetTemporaryDirectory(env);
+}

test/com/sun/tools/attach/BasicTests.java

@@ -38,7 +38,7 @@ import jdk.testlibrary.ProcessThread;
  * @bug 6173612 6273707 6277253 6335921 6348630 6342019 6381757
  * @summary Basic unit tests for the VM attach mechanism.
  * @library /lib/testlibrary
- * @run build Agent BadAgent RedefineAgent Application Shutdown RedefineDummy
+ * @run build Agent BadAgent RedefineAgent Application Shutdown RedefineDummy RunnerUtil
  * @run main BasicTests
  *
  * This test will perform a number of basic attach tests.
@@ -238,20 +238,18 @@ public class BasicTests {
             // Test 6 - list method should list the target VM
             System.out.println(" - Test: VirtualMachine.list");
             List<VirtualMachineDescriptor> l = VirtualMachine.list();
-            if (!l.isEmpty()) {
-                boolean found = false;
-                for (VirtualMachineDescriptor vmd: l) {
-                    if (vmd.id().equals(pid)) {
-                        found = true;
-                        break;
-                    }
-                }
-                if (found) {
-                    System.out.println(" - " + pid + " found.");
-                } else {
-                    throw new RuntimeException(pid + " not found in VM list");
+            boolean found = false;
+            for (VirtualMachineDescriptor vmd: l) {
+                if (vmd.id().equals(pid)) {
+                    found = true;
+                    break;
                 }
             }
+            if (found) {
+                System.out.println(" - " + pid + " found.");
+            } else {
+                throw new RuntimeException(pid + " not found in VM list");
+            }
 
             // test 7 - basic hashCode/equals tests
             System.out.println(" - Test: hashCode/equals");

test/com/sun/tools/attach/RunnerUtil.java

@@ -24,12 +24,11 @@
 import java.io.IOException;
 import java.io.File;
 import java.nio.file.Files;
-import java.nio.file.Path;
 import java.util.Arrays;
 import java.util.regex.Pattern;
 import java.util.regex.Matcher;
+
 import jdk.testlibrary.OutputAnalyzer;
-import jdk.testlibrary.JDKToolLauncher;
 import jdk.testlibrary.ProcessTools;
 import jdk.testlibrary.Utils;
 import jdk.testlibrary.ProcessThread;
@@ -39,6 +38,7 @@ import jdk.testlibrary.ProcessThread;
  * (Test runner = class that launch a test)
  */
 public class RunnerUtil {
+
     /**
      * The Application process must be run concurrently with our tests since
      * the tests will attach to the Application.
@@ -49,16 +49,31 @@ public class RunnerUtil {
      *
      * The Application will write its pid and shutdownPort in the given outFile.
      */
-    public static ProcessThread startApplication(String outFile) throws Throwable {
+    public static ProcessThread startApplication(String outFile, String... additionalOpts) throws Throwable {
         String classpath = System.getProperty("test.class.path", ".");
-        String[] args = Utils.addTestJavaOpts(
-            "-Dattach.test=true", "-classpath", classpath, "Application", outFile);
+        String[] myArgs = concat(additionalOpts, new String [] { "-Dattach.test=true", "-classpath", classpath, "Application", outFile });
+        String[] args = Utils.addTestJavaOpts(myArgs);
         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args);
         ProcessThread pt = new ProcessThread("runApplication", pb);
         pt.start();
         return pt;
     }
 
+    public static String[] concat(String[] a, String[] b) {
+        if (a == null) {
+            return b;
+        }
+        if (b == null) {
+            return a;
+        }
+        int aLen = a.length;
+        int bLen = b.length;
+        String[] c = new String[aLen + bLen];
+        System.arraycopy(a, 0, c, 0, aLen);
+        System.arraycopy(b, 0, c, aLen, bLen);
+        return c;
+     }
+
     /**
      * Will stop the running Application.
      * First tries to shutdown nicely by connecting to the shut down port.

test/com/sun/tools/attach/TempDirTest.java

+/*
+ * 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.
+ */
+
+import com.sun.tools.attach.*;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Properties;
+import java.util.List;
+import java.io.File;
+
+import jdk.testlibrary.OutputAnalyzer;
+import jdk.testlibrary.ProcessTools;
+import jdk.testlibrary.ProcessThread;
+
+/*
+ * @test
+ * @bug 8033104
+ * @summary Test to make sure attach and jvmstat works correctly when java.io.tmpdir is set
+ * @library /lib/testlibrary
+ * @run build Application Shutdown RunnerUtil
+ * @run main/timeout=10 TempDirTest
+ */
+
+public class TempDirTest {
+
+    public static void main(String args[]) throws Throwable {
+
+        Path clientTmpDir = Files.createTempDirectory("TempDirTest-client");
+        clientTmpDir.toFile().deleteOnExit();
+        Path targetTmpDir = Files.createTempDirectory("TempDirTest-target");
+        targetTmpDir.toFile().deleteOnExit();
+
+        // run the test with all possible combinations of setting java.io.tmpdir
+        runExperiment(null, null);
+        runExperiment(clientTmpDir, null);
+        runExperiment(clientTmpDir, targetTmpDir);
+        runExperiment(null, targetTmpDir);
+
+    }
+
+    private static int counter = 0;
+
+    /*
+     * The actual test is in the nested class TestMain.
+     * The responsibility of this class is to:
+     * 1. Start the Application class in a separate process.
+     * 2. Find the pid and shutdown port of the running Application.
+     * 3. Launches the tests in nested class TestMain that will attach to the Application.
+     * 4. Shut down the Application.
+     */
+    public static void runExperiment(Path clientTmpDir, Path targetTmpDir) throws Throwable {
+
+        System.out.print("### Running tests with overridden tmpdir for");
+        System.out.print(" client: " + (clientTmpDir == null ? "no" : "yes"));
+        System.out.print(" target: " + (targetTmpDir == null ? "no" : "yes"));
+        System.out.println(" ###");
+
+        final String pidFile = "TempDirTest.Application.pid-" + counter++;
+        ProcessThread processThread = null;
+        RunnerUtil.ProcessInfo info = null;
+        try {
+            String[] tmpDirArg = null;
+            if (targetTmpDir != null) {
+                tmpDirArg = new String[] {"-Djava.io.tmpdir=" + targetTmpDir};
+            }
+            processThread = RunnerUtil.startApplication(pidFile, tmpDirArg);
+            info = RunnerUtil.readProcessInfo(pidFile);
+            launchTests(info.pid, clientTmpDir);
+        } catch (Throwable t) {
+            System.out.println("TempDirTest got unexpected exception: " + t);
+            t.printStackTrace();
+            throw t;
+        } finally {
+            // Make sure the Application process is stopped.
+            RunnerUtil.stopApplication(info.shutdownPort, processThread);
+        }
+    }
+
+    /**
+     * Runs the actual tests in nested class TestMain.
+     * The reason for running the tests in a separate process
+     * is that we need to modify the class path and
+     * the -Djava.io.tmpdir property.
+     */
+    private static void launchTests(int pid, Path clientTmpDir) throws Throwable {
+        final String sep = File.separator;
+
+        // Need to add jdk/lib/tools.jar to classpath.
+        String classpath =
+            System.getProperty("test.class.path", "") + File.pathSeparator +
+            System.getProperty("test.jdk", ".") + sep + "lib" + sep + "tools.jar";
+
+        String[] tmpDirArg = null;
+        if (clientTmpDir != null) {
+            tmpDirArg = new String [] {"-Djava.io.tmpdir=" + clientTmpDir};
+        }
+
+        // Arguments : [-Djava.io.tmpdir=] -classpath cp TempDirTest$TestMain pid
+        String[] args = RunnerUtil.concat(
+                tmpDirArg,
+                new String[] {
+                    "-classpath",
+                    classpath,
+                    "TempDirTest$TestMain",
+                    Integer.toString(pid) });
+        OutputAnalyzer output = ProcessTools.executeTestJvm(args);
+        output.shouldHaveExitValue(0);
+    }
+
+    /**
+     * This is the actual test. It will attach to the running Application
+     * and perform a number of basic attach tests.
+     */
+    public static class TestMain {
+        public static void main(String args[]) throws Exception {
+            String pid = args[0];
+
+            // Test 1 - list method should list the target VM
+            System.out.println(" - Test: VirtualMachine.list");
+            List<VirtualMachineDescriptor> l = VirtualMachine.list();
+            boolean found = false;
+            for (VirtualMachineDescriptor vmd: l) {
+                if (vmd.id().equals(pid)) {
+                    found = true;
+                    break;
+                }
+            }
+            if (found) {
+                System.out.println(" - " + pid + " found.");
+            } else {
+                throw new RuntimeException(pid + " not found in VM list");
+            }
+
+            // Test 2 - try to attach and verify connection
+
+            System.out.println(" - Attaching to application ...");
+            VirtualMachine vm = VirtualMachine.attach(pid);
+
+            System.out.println(" - Test: system properties in target VM");
+            Properties props = vm.getSystemProperties();
+            String value = props.getProperty("attach.test");
+            if (value == null || !value.equals("true")) {
+                throw new RuntimeException("attach.test property not set");
+            }
+            System.out.println(" - attach.test property set as expected");
+        }
+    }
+}

test/com/sun/tools/attach/java.policy.allow

@@ -13,7 +13,6 @@ grant {
     permission java.lang.RuntimePermission "accessClassInPackage.sun.jvmstat.monitor";
     permission java.lang.RuntimePermission "loadLibrary.attach";
     permission java.util.PropertyPermission "sun.jvmstat.*", "read";
-    permission java.util.PropertyPermission "java.io.tmpdir", "read";
 
     /* to read configuration file in META-INF/services, and write/delete .attach_pid<pid> */
     permission java.io.FilePermission "<<ALL FILES>>", "read,write,delete";

test/com/sun/tools/attach/java.policy.deny

@@ -11,7 +11,6 @@ grant {
     permission java.lang.RuntimePermission "accessClassInPackage.sun.tools.attach";
     permission java.lang.RuntimePermission "loadLibrary.attach";
     permission java.util.PropertyPermission "sun.jvmstat.*", "read";
-    permission java.util.PropertyPermission "java.io.tmpdir", "read";
 
     /* to read configuration file in META-INF/services, and write/delete .attach_pid<pid> */
     permission java.io.FilePermission "<<ALL FILES>>", "read,write,delete";