--- a/jdk/src/share/back/invoker.c Tue Mar 29 23:02:04 2016 +0100
+++ b/jdk/src/share/back/invoker.c Mon Mar 21 11:24:09 2016 +0100
@@ -211,6 +211,47 @@
return error;
}
+/*
+ * Delete global references from the request which got put there before a
+ * invoke request was carried out. See fillInvokeRequest() and invoker invoke*()
+ * impls.
+ */
+static void
+deleteGlobalRefs(JNIEnv *env, InvokeRequest *request)
+{
+ void *cursor;
+ jint argIndex = 0;
+ jvalue *argument = request->arguments;
+ jbyte argumentTag = firstArgumentTypeTag(request->methodSignature, &cursor);
+
+ if (request->clazz != NULL) {
+ tossGlobalRef(env, &(request->clazz));
+ }
+ if (request->instance != NULL) {
+ tossGlobalRef(env, &(request->instance));
+ }
+ /* Delete global argument references */
+ while (argIndex < request->argumentCount) {
+ if ((argumentTag == JDWP_TAG(OBJECT)) ||
+ (argumentTag == JDWP_TAG(ARRAY))) {
+ if (argument->l != NULL) {
+ tossGlobalRef(env, &(argument->l));
+ }
+ }
+ argument++;
+ argIndex++;
+ argumentTag = nextArgumentTypeTag(&cursor);
+ }
+ /* Delete potentially saved return values */
+ if ((request->invokeType == INVOKE_CONSTRUCTOR) ||
+ (returnTypeTag(request->methodSignature) == JDWP_TAG(OBJECT)) ||
+ (returnTypeTag(request->methodSignature) == JDWP_TAG(ARRAY))) {
+ if (request->returnValue.l != NULL) {
+ tossGlobalRef(env, &(request->returnValue.l));
+ }
+ }
+}
+
static jvmtiError
fillInvokeRequest(JNIEnv *env, InvokeRequest *request,
jbyte invokeType, jbyte options, jint id,
@@ -736,6 +777,13 @@
(void)outStream_writeObjectRef(env, &out, exc);
outStream_sendReply(&out);
}
+
+ /*
+ * At this time, there's no need to retain global references on
+ * arguments since the reply is processed. No one will deal with
+ * this request ID anymore, so we must call deleteGlobalRefs().
+ */
+ deleteGlobalRefs(env, request);
}
jboolean
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/com/sun/jdi/oom/@debuggeeVMOptions Mon Mar 21 11:24:09 2016 +0100
@@ -0,0 +1,1 @@
+-Xmx40m
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/com/sun/jdi/oom/OomDebugTest.java Mon Mar 21 11:24:09 2016 +0100
@@ -0,0 +1,312 @@
+/*
+ * Copyright (c) 2016 Red Hat Inc.
+ *
+ * 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 4858370
+ * @summary JDWP: Memory Leak (global references not deleted after invokeMethod).
+ *
+ * @author Severin Gehwolf <sgehwolf@redhat.com>
+ *
+ * @library ..
+ * @run build TestScaffold VMConnection TargetListener TargetAdapter
+ * @run compile -g OomDebugTest.java
+ * @run shell OomDebugTestSetup.sh
+ * @run main OomDebugTest OomDebugTestTarget test1
+ * @run main OomDebugTest OomDebugTestTarget test2
+ * @run main OomDebugTest OomDebugTestTarget test3
+ * @run main OomDebugTest OomDebugTestTarget test4
+ * @run main OomDebugTest OomDebugTestTarget test5
+ */
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import com.sun.jdi.ArrayReference;
+import com.sun.jdi.ArrayType;
+import com.sun.jdi.ClassType;
+import com.sun.jdi.Field;
+import com.sun.jdi.InvocationException;
+import com.sun.jdi.Method;
+import com.sun.jdi.ObjectReference;
+import com.sun.jdi.ReferenceType;
+import com.sun.jdi.StackFrame;
+import com.sun.jdi.VMOutOfMemoryException;
+import com.sun.jdi.Value;
+import com.sun.jdi.event.BreakpointEvent;
+
+/***************** Target program **********************/
+
+class OomDebugTestTarget {
+
+ OomDebugTestTarget() {
+ System.out.println("DEBUG: invoked constructor");
+ }
+ static class FooCls {
+ @SuppressWarnings("unused")
+ private byte[] bytes = new byte[3000000];
+ };
+
+ FooCls fooCls = new FooCls();
+ byte[] byteArray = new byte[0];
+
+ void testMethod(FooCls foo) {
+ System.out.println("DEBUG: invoked 'void testMethod(FooCls)', foo == " + foo);
+ }
+
+ void testPrimitive(byte[] foo) {
+ System.out.println("DEBUG: invoked 'void testPrimitive(byte[])', foo == " + foo);
+ }
+
+ byte[] testPrimitiveArrRetval() {
+ System.out.println("DEBUG: invoked 'byte[] testPrimitiveArrRetval()'");
+ return new byte[3000000];
+ }
+
+ FooCls testFooClsRetval() {
+ System.out.println("DEBUG: invoked 'FooCls testFooClsRetval()'");
+ return new FooCls();
+ }
+
+ public void entry() {}
+
+ public static void main(String[] args){
+ System.out.println("DEBUG: OomDebugTestTarget.main");
+ new OomDebugTestTarget().entry();
+ }
+}
+
+/***************** Test program ************************/
+
+public class OomDebugTest extends TestScaffold {
+
+ private static final int TOTAL_TESTS = 1;
+ private ReferenceType targetClass;
+ private ObjectReference thisObject;
+ private int failedTests;
+ private final String testMethodName;
+
+ public OomDebugTest(String[] args) {
+ super(args);
+ if (args.length != 2) {
+ throw new RuntimeException("Test failed unexpectedly.");
+ }
+ testMethodName = args[1];
+ }
+
+ @Override
+ protected void runTests() throws Exception {
+ try {
+ /*
+ * Get to the top of entry()
+ * to determine targetClass and mainThread
+ */
+ BreakpointEvent bpe = startTo("OomDebugTestTarget", "entry", "()V");
+ targetClass = bpe.location().declaringType();
+
+ mainThread = bpe.thread();
+
+ StackFrame frame = mainThread.frame(0);
+ thisObject = frame.thisObject();
+ java.lang.reflect.Method m = findTestMethod();
+ m.invoke(this);
+ } catch (NoSuchMethodException e) {
+ e.printStackTrace();
+ failure();
+ } catch (SecurityException e) {
+ e.printStackTrace();
+ failure();
+ }
+ }
+
+ private java.lang.reflect.Method findTestMethod()
+ throws NoSuchMethodException, SecurityException {
+ return OomDebugTest.class.getDeclaredMethod(testMethodName);
+ }
+
+ private void failure() {
+ failedTests++;
+ }
+
+ /*
+ * Test case: Object reference as method parameter.
+ */
+ @SuppressWarnings("unused") // called via reflection
+ private void test1() throws Exception {
+ System.out.println("DEBUG: ------------> Running " + testMethodName);
+ try {
+ Field field = targetClass.fieldByName("fooCls");
+ ClassType clsType = (ClassType)field.type();
+ Method constructor = getConstructorForClass(clsType);
+ for (int i = 0; i < 15; i++) {
+ @SuppressWarnings({ "rawtypes", "unchecked" })
+ ObjectReference objRef = clsType.newInstance(mainThread,
+ constructor,
+ new ArrayList(0),
+ ObjectReference.INVOKE_NONVIRTUAL);
+ invoke("testMethod", "(LOomDebugTestTarget$FooCls;)V", objRef);
+ }
+ } catch (InvocationException e) {
+ handleFailure(e);
+ }
+ }
+
+ /*
+ * Test case: Array reference as method parameter.
+ */
+ @SuppressWarnings("unused") // called via reflection
+ private void test2() throws Exception {
+ System.out.println("DEBUG: ------------> Running " + testMethodName);
+ try {
+ Field field = targetClass.fieldByName("byteArray");
+ ArrayType arrType = (ArrayType)field.type();
+
+ for (int i = 0; i < 15; i++) {
+ ArrayReference byteArrayVal = arrType.newInstance(3000000);
+ invoke("testPrimitive", "([B)V", byteArrayVal);
+ }
+ } catch (VMOutOfMemoryException e) {
+ defaultHandleOOMFailure(e);
+ }
+ }
+
+ /*
+ * Test case: Array reference as return value.
+ */
+ @SuppressWarnings("unused") // called via reflection
+ private void test3() throws Exception {
+ System.out.println("DEBUG: ------------> Running " + testMethodName);
+ try {
+ for (int i = 0; i < 15; i++) {
+ invoke("testPrimitiveArrRetval",
+ "()[B",
+ Collections.EMPTY_LIST,
+ vm().mirrorOfVoid());
+ }
+ } catch (InvocationException e) {
+ handleFailure(e);
+ }
+ }
+
+ /*
+ * Test case: Object reference as return value.
+ */
+ @SuppressWarnings("unused") // called via reflection
+ private void test4() throws Exception {
+ System.out.println("DEBUG: ------------> Running " + testMethodName);
+ try {
+ for (int i = 0; i < 15; i++) {
+ invoke("testFooClsRetval",
+ "()LOomDebugTestTarget$FooCls;",
+ Collections.EMPTY_LIST,
+ vm().mirrorOfVoid());
+ }
+ } catch (InvocationException e) {
+ handleFailure(e);
+ }
+ }
+
+ /*
+ * Test case: Constructor
+ */
+ @SuppressWarnings({ "unused", "unchecked", "rawtypes" }) // called via reflection
+ private void test5() throws Exception {
+ System.out.println("DEBUG: ------------> Running " + testMethodName);
+ try {
+ ClassType type = (ClassType)thisObject.type();
+ for (int i = 0; i < 15; i++) {
+ type.newInstance(mainThread,
+ findMethod(targetClass, "<init>", "()V"),
+ new ArrayList(0),
+ ObjectReference.INVOKE_NONVIRTUAL);
+ }
+ } catch (InvocationException e) {
+ handleFailure(e);
+ }
+ }
+
+ private Method getConstructorForClass(ClassType clsType) {
+ List<Method> methods = clsType.methodsByName("<init>");
+ if (methods.size() != 1) {
+ throw new RuntimeException("FAIL. Expected only one, the default, constructor");
+ }
+ return methods.get(0);
+ }
+
+ private void handleFailure(InvocationException e) {
+ // There is no good way to see the OOME diagnostic message in the target since the
+ // TestScaffold might throw an exception while trying to print the stack trace. I.e
+ // it might get a a VMDisconnectedException before the stack trace printing finishes.
+ System.err.println("FAILURE: InvocationException caused by OOM");
+ defaultHandleOOMFailure(e);
+ }
+
+ private void defaultHandleOOMFailure(Exception e) {
+ e.printStackTrace();
+ failure();
+ }
+
+ @SuppressWarnings({ "rawtypes", "unchecked" })
+ void invoke(String methodName, String methodSig, Value value)
+ throws Exception {
+ List args = new ArrayList(1);
+ args.add(value);
+ invoke(methodName, methodSig, args, value);
+ }
+
+ void invoke(String methodName,
+ String methodSig,
+ @SuppressWarnings("rawtypes") List args,
+ Value value) throws Exception {
+ Method method = findMethod(targetClass, methodName, methodSig);
+ if ( method == null) {
+ failure("FAILED: Can't find method: "
+ + methodName + " for class = " + targetClass);
+ return;
+ }
+ invoke(method, args, value);
+ }
+
+ @SuppressWarnings({ "rawtypes", "unchecked" })
+ void invoke(Method method, List args, Value value) throws Exception {
+ thisObject.invokeMethod(mainThread, method, args, 0);
+ System.out.println("DEBUG: Done invoking method via debugger.");
+ }
+
+ Value fieldValue(String fieldName) {
+ Field field = targetClass.fieldByName(fieldName);
+ return thisObject.getValue(field);
+ }
+
+ public static void main(String[] args) throws Exception {
+ OomDebugTest oomTest = new OomDebugTest(args);
+ oomTest.startTests();
+ if (oomTest.failedTests > 0) {
+ throw new RuntimeException(oomTest.failedTests
+ + " of " + TOTAL_TESTS + " test(s) failed.");
+ }
+ System.out.println("All " + TOTAL_TESTS + " tests passed.");
+ }
+
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/com/sun/jdi/oom/OomDebugTestSetup.sh Mon Mar 21 11:24:09 2016 +0100
@@ -0,0 +1,46 @@
+#!/bin/sh
+#
+# Copyright (c) 2016 Red Hat Inc.
+# 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.
+#
+
+
+if [ "${TESTSRC}" = "" ]
+then
+ echo "TESTSRC not set. Test cannot execute. Failed."
+ exit 1
+fi
+echo "TESTSRC=${TESTSRC}"
+
+if [ "${TESTJAVA}" = "" ]
+then
+ echo "TESTJAVA not set. Test cannot execute. Failed."
+ exit 1
+fi
+echo "TESTJAVA=${TESTJAVA}"
+
+if [ "${TESTCLASSES}" = "" ]
+then
+ echo "TESTCLASSES not set. Test cannot execute. Failed."
+ exit 1
+fi
+
+cp ${TESTSRC}/@debuggeeVMOptions ${TESTCLASSES}/