| /* |
| * Copyright (c) 2003, 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 sun.jvm.hotspot.oops.*; |
| import sun.jvm.hotspot.runtime.*; |
| import sun.jvm.hotspot.tools.*; |
| import sun.jvm.hotspot.utilities.*; |
| |
| /** |
| We don't run any of the "standard" SA command line tools for sanity |
| check. This is because the standard tools print addresses in hex |
| which could change legally. Also, textual comparison of output may |
| not match because of other reasons as well. This tool checks |
| validity of threads and frames logically. This class has reference |
| frame names from "known" threads. The debuggee is assumed to run |
| "LibprocTest.java". |
| */ |
| |
| public class LibprocClient extends Tool { |
| |
| public void run() { |
| // try to get VM version and check |
| String version = VM.getVM().getVMRelease(); |
| Assert.that(version.startsWith("1.5"), "1.5 expected"); |
| |
| // try getting threads |
| Threads threads = VM.getVM().getThreads(); |
| boolean mainTested = false; |
| |
| // check frames of each thread |
| for (JavaThread cur = threads.first(); cur != null; cur = cur.next()) { |
| if (cur.isJavaThread()) { |
| String name = cur.getThreadName(); |
| // testing of basic frame walking for all threads |
| for (JavaVFrame vf = getLastJavaVFrame(cur); vf != null; vf = vf.javaSender()) { |
| checkFrame(vf); |
| } |
| |
| // special testing for "known" threads. For now, only "main" thread. |
| if (name.equals("main")) { |
| checkMainThread(cur); |
| mainTested = true; |
| } |
| } |
| } |
| Assert.that(mainTested, "main thread missing"); |
| } |
| |
| public static void main(String[] args) { |
| try { |
| LibprocClient lc = new LibprocClient(); |
| lc.start(args); |
| lc.getAgent().detach(); |
| System.out.println("\nPASSED\n"); |
| } catch (Exception exp) { |
| System.out.println("\nFAILED\n"); |
| exp.printStackTrace(); |
| } |
| } |
| |
| // -- Internals only below this point |
| private static JavaVFrame getLastJavaVFrame(JavaThread cur) { |
| RegisterMap regMap = cur.newRegisterMap(true); |
| Frame f = cur.getCurrentFrameGuess(); |
| if (f == null) { |
| System.err.println(" (Unable to get a top most frame)"); |
| return null; |
| } |
| VFrame vf = VFrame.newVFrame(f, regMap, cur, true, true); |
| if (vf == null) { |
| System.err.println(" (Unable to create vframe for topmost frame guess)"); |
| return null; |
| } |
| if (vf.isJavaFrame()) { |
| return (JavaVFrame) vf; |
| } |
| return (JavaVFrame) vf.javaSender(); |
| } |
| |
| private void checkMethodSignature(Symbol sig) { |
| SignatureIterator itr = new SignatureIterator(sig) { |
| public void doBool () {} |
| public void doChar () {} |
| public void doFloat () {} |
| public void doDouble() {} |
| public void doByte () {} |
| public void doShort () {} |
| public void doInt () {} |
| public void doLong () {} |
| public void doVoid () {} |
| public void doObject(int begin, int end) {} |
| public void doArray (int begin, int end) {} |
| }; |
| // this will throw RuntimeException for any invalid item in signature. |
| itr.iterate(); |
| } |
| |
| private void checkBCI(Method m, int bci) { |
| if (! m.isNative()) { |
| byte[] buf = m.getByteCode(); |
| Assert.that(bci >= 0 && bci < buf.length, "invalid bci, not in code range"); |
| if (m.hasLineNumberTable()) { |
| int lineNum = m.getLineNumberFromBCI(bci); |
| Assert.that(lineNum >= 0, "expecting non-negative line number"); |
| } |
| } |
| } |
| |
| private void checkMethodHolder(Method method) { |
| Klass klass = method.getMethodHolder(); |
| Assert.that(klass != null, "expecting non-null instance klass"); |
| } |
| |
| private void checkFrame(JavaVFrame vf) { |
| Method method = vf.getMethod(); |
| Assert.that(method != null, "expecting a non-null method here"); |
| Assert.that(method.getName() != null, "expecting non-null method name"); |
| checkMethodHolder(method); |
| checkMethodSignature(method.getSignature()); |
| checkBCI(method, vf.getBCI()); |
| } |
| |
| // from the test case LibprocTest.java - in the main thread we |
| // should see frames as below |
| private static String[] mainThreadMethods = new String[] { |
| "java.lang.Object.wait(long)", |
| "java.lang.Object.wait()", |
| "LibprocTest.main(java.lang.String[])" |
| }; |
| |
| private void checkMainThread(JavaThread thread) { |
| checkFrames(thread, mainThreadMethods); |
| } |
| |
| private void checkFrames(JavaThread thread, String[] expectedMethodNames) { |
| int i = 0; |
| for (JavaVFrame vf = getLastJavaVFrame(thread); vf != null; vf = vf.javaSender(), i++) { |
| Method m = vf.getMethod(); |
| Assert.that(m.externalNameAndSignature().equals(expectedMethodNames[i]), |
| "expected frame missing"); |
| } |
| } |
| } |