changeset 138:31959ddaf501

6545149: 4/4 JLI Instrumentation.redefineClasses SIGSEGVs on java/lang/Thread Summary: Add regression test for redefining class with native methods. Reviewed-by: sspitsyn
author dcubed
date Mon, 24 Mar 2008 16:11:24 -0700
parents ebe8adae32b9
children 719789c7132c
files test/java/lang/instrument/RedefineClassWithNativeMethod.sh test/java/lang/instrument/RedefineClassWithNativeMethodAgent.java test/java/lang/instrument/RedefineClassWithNativeMethodApp.java
diffstat 3 files changed, 189 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/java/lang/instrument/RedefineClassWithNativeMethod.sh	Mon Mar 24 16:11:24 2008 -0700
@@ -0,0 +1,81 @@
+#
+# Copyright 2008 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 5003341 4917140 6545149
+# @summary Redefine a class with a native method.
+# @author Daniel D. Daugherty as modified from the test submitted by clovis@par.univie.ac.at
+#
+# @run shell MakeJAR3.sh RedefineClassWithNativeMethodAgent 'Can-Redefine-Classes: true'
+# @run build RedefineClassWithNativeMethodApp
+# @run shell RedefineClassWithNativeMethod.sh
+#
+
+if [ "${TESTJAVA}" = "" ]
+then
+  echo "TESTJAVA not set.  Test cannot execute.  Failed."
+  exit 1
+fi
+
+if [ "${TESTSRC}" = "" ]
+then
+  echo "TESTSRC not set.  Test cannot execute.  Failed."
+  exit 1
+fi
+
+if [ "${TESTCLASSES}" = "" ]
+then
+  echo "TESTCLASSES not set.  Test cannot execute.  Failed."
+  exit 1
+fi
+
+JAVAC="${TESTJAVA}"/bin/javac
+JAVA="${TESTJAVA}"/bin/java
+
+"${JAVA}" ${TESTVMOPTS} \
+    -javaagent:RedefineClassWithNativeMethodAgent.jar=java/lang/Thread.class \
+    -classpath "${TESTCLASSES}" RedefineClassWithNativeMethodApp \
+    > output.log 2>&1
+result=$?
+
+cat output.log
+
+if [ "$result" = 0 ]; then
+    echo "PASS: RedefineClassWithNativeMethodApp exited with status of 0."
+else
+    echo "FAIL: RedefineClassWithNativeMethodApp exited with status of $result"
+    exit "$result"
+fi
+
+MESG="Exception"
+grep "$MESG" output.log
+result=$?
+if [ "$result" = 0 ]; then
+    echo "FAIL: found '$MESG' in the test output"
+    result=1
+else
+    echo "PASS: did NOT find '$MESG' in the test output"
+    result=0
+fi
+
+exit $result
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/java/lang/instrument/RedefineClassWithNativeMethodAgent.java	Mon Mar 24 16:11:24 2008 -0700
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2008 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.
+ */
+
+import java.lang.instrument.*;
+import java.net.*;
+import java.util.*;
+import java.io.*;
+
+public class RedefineClassWithNativeMethodAgent {
+    static Class clz;
+
+    // just read the original class and redefine it via a Timer
+    public static void premain(String agentArgs, final Instrumentation inst) throws Exception {
+        String s = agentArgs.substring(0, agentArgs.indexOf(".class"));
+        clz = Class.forName(s.replace('/', '.'));
+        ClassLoader loader =
+            RedefineClassWithNativeMethodAgent.class.getClassLoader();
+        URL classURL = loader.getResource(agentArgs);
+        if (classURL == null) {
+            throw new Exception("Cannot find class: " + agentArgs);
+        }
+
+        int         redefineLength;
+        InputStream redefineStream;
+
+        System.out.println("Reading test class from " + classURL);
+        if (classURL.getProtocol().equals("file")) {
+            File f = new File(classURL.getFile());
+            redefineStream = new FileInputStream(f);
+            redefineLength = (int) f.length();
+        } else {
+            URLConnection conn = classURL.openConnection();
+            redefineStream = conn.getInputStream();
+            redefineLength = conn.getContentLength();
+        }
+
+        final byte[] buffer = new byte[redefineLength];
+        new BufferedInputStream(redefineStream).read(buffer);
+        new Timer(true).schedule(new TimerTask() {
+            public void run() {
+                try {
+                    System.out.println("Instrumenting");
+                    ClassDefinition cld = new ClassDefinition(clz, buffer);
+                    inst.redefineClasses(new ClassDefinition[] { cld });
+                }
+                catch (Exception e) { e.printStackTrace(); }
+            }
+        }, 500);
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/java/lang/instrument/RedefineClassWithNativeMethodApp.java	Mon Mar 24 16:11:24 2008 -0700
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2008 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.
+ */
+
+public class RedefineClassWithNativeMethodApp {
+    public static void main(String[] args) throws Exception {
+        try {
+            // give the agent a chance to redefine the target class
+            Thread.sleep(2000);
+        } catch (InterruptedException ie) {
+        }
+
+        System.out.println("Creating instance of " +
+            RedefineClassWithNativeMethodAgent.clz);
+        RedefineClassWithNativeMethodAgent.clz.newInstance();
+
+        System.exit(0);
+    }
+}