| /* |
| * Copyright (c) 2001, 2018, 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. |
| */ |
| |
| package nsk.jdi.VirtualMachine.canGetMonitorInfo; |
| |
| import nsk.share.*; |
| import nsk.share.jpda.*; |
| import nsk.share.jdi.*; |
| |
| import com.sun.jdi.*; |
| import java.util.*; |
| import java.io.*; |
| |
| /** |
| * The test for the implementation of an object of the type <BR> |
| * VirtualMachine. <BR> |
| * <BR> |
| * The test checks up that results of the method <BR> |
| * <code>com.sun.jdi.VirtualMachine.canGetMonitorInfo()</code> <BR> |
| * complies with its spec. <BR> |
| * <BR> |
| * The case for testing includes two threads in a debuggee. <BR> |
| * The test works as follows. After being started up, <BR> <BR> |
| * the debuggee creates a 'lockingObject' for synchronizing threads, <BR> |
| * enters a synchronized block in which it creates new thread, thread2, <BR> |
| * informs the debugger of the thread2 creation, <BR> |
| * and is waiting for reply. <BR> |
| * Since the thread2 use the same locking object in its 'run' method <BR> |
| * it is locked up until main thread leaves the synchronized block. <BR> |
| * Upon the receiption a message from the debuggee, the debugger <BR> |
| * - gets ThreadReference thread2 mirroring thread2 in the debuggee; <BR> |
| * - calls to the method VirtualMachine.canGetCurrentContendedMonitor() <BR> |
| * to detect whether debuggee's VM supports corresponding method. <BR> |
| * This is because the debugger needs to get a special object, <BR> |
| * ObjectReference monitor, mirroring a monitor in the debuggee <BR> |
| * on which debuggee's thread2 is locked up and waiting; <BR> |
| * - If the needed facility is not supported the debugger cancels the test.<BR> |
| * - Othewise, it suspends the thread2, calls to the method <BR> |
| * tread2.currentContendedMonitor() to get the object "monitor" <BR> |
| * mirroring a monitor in the debuggee and gets a boolean value <BR> |
| * returned by the method VirtualMachine.canGetMonitorInfo() <BR> |
| * <BR> |
| * Then if the value is true the debugger checks up that call to <BR> |
| * the method monitor.waitingThreads() doesn't throw <BR> |
| * UnsupportedOperationException. <BR> |
| * If the value is false the debugger checks up that call to the <BR> |
| * the method monitor.waitingThreads() does throw <BR> |
| * UnsupportedOperationException. <BR> |
| */ |
| |
| public class cangetmonitorinfo001 { |
| |
| //----------------------------------------------------- templete section |
| static final int PASSED = 0; |
| static final int FAILED = 2; |
| static final int PASS_BASE = 95; |
| |
| //----------------------------------------------------- templete parameters |
| static final String |
| sHeader1 = "\n==> nsk/jdi/VirtualMachine/canGetMonitorInfo/cangetmonitorinfo001 ", |
| sHeader2 = "--> debugger: ", |
| sHeader3 = "##> debugger: "; |
| |
| //----------------------------------------------------- main method |
| |
| public static void main (String argv[]) { |
| int result = run(argv, System.out); |
| System.exit(result + PASS_BASE); |
| } |
| |
| public static int run (String argv[], PrintStream out) { |
| return new cangetmonitorinfo001().runThis(argv, out); |
| } |
| |
| //-------------------------------------------------- log procedures |
| |
| private static Log logHandler; |
| |
| private static void log1(String message) { |
| logHandler.display(sHeader1 + message); |
| } |
| private static void log2(String message) { |
| logHandler.display(sHeader2 + message); |
| } |
| private static void log3(String message) { |
| logHandler.complain(sHeader3 + message); |
| } |
| |
| // ************************************************ test parameters |
| |
| private String debuggeeName = |
| "nsk.jdi.VirtualMachine.canGetMonitorInfo.cangetmonitorinfo001a"; |
| |
| private String testedClassName = |
| "nsk.jdi.VirtualMachine.canGetMonitorInfo.Threadcangetmonitorinfo001a"; |
| |
| //String mName = "nsk.jdi.VirtualMachine.canGetMonitorInfo"; |
| |
| //====================================================== test program |
| //------------------------------------------------------ common section |
| |
| static ArgumentHandler argsHandler; |
| |
| static int waitTime; |
| |
| static VirtualMachine vm = null; |
| |
| ReferenceType testedclass = null; |
| ThreadReference thread2 = null; |
| |
| |
| static int testExitCode = PASSED; |
| |
| static final int returnCode0 = 0; |
| static final int returnCode1 = 1; |
| static final int returnCode2 = 2; |
| static final int returnCode3 = 3; |
| static final int returnCode4 = 4; |
| |
| //------------------------------------------------------ methods |
| |
| private int runThis (String argv[], PrintStream out) { |
| |
| Debugee debuggee; |
| |
| argsHandler = new ArgumentHandler(argv); |
| logHandler = new Log(out, argsHandler); |
| Binder binder = new Binder(argsHandler, logHandler); |
| |
| if (argsHandler.verbose()) { |
| debuggee = binder.bindToDebugee(debuggeeName + " -vbs"); |
| } else { |
| debuggee = binder.bindToDebugee(debuggeeName); |
| } |
| |
| waitTime = argsHandler.getWaitTime(); |
| |
| |
| IOPipe pipe = new IOPipe(debuggee); |
| |
| debuggee.redirectStderr(out); |
| log2("issuspended002a debuggee launched"); |
| debuggee.resume(); |
| |
| String line = pipe.readln(); |
| if ((line == null) || !line.equals("ready")) { |
| log3("signal received is not 'ready' but: " + line); |
| return FAILED; |
| } else { |
| log2("'ready' recieved"); |
| } |
| |
| vm = debuggee.VM(); |
| |
| //------------------------------------------------------ testing section |
| log1(" TESTING BEGINS"); |
| |
| for (int i = 0; ; i++) { |
| |
| pipe.println("newcheck"); |
| line = pipe.readln(); |
| |
| if (line.equals("checkend")) { |
| log2(" : returned string is 'checkend'"); |
| break ; |
| } else if (!line.equals("checkready")) { |
| log3("ERROR: returned string is not 'checkready'"); |
| testExitCode = FAILED; |
| break ; |
| } |
| |
| log1("new checkready: #" + i); |
| |
| //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ variable part |
| |
| int expresult = returnCode0; |
| |
| String threadName = "Thread2"; |
| |
| List allThreads = null; |
| ObjectReference monitor = null; |
| ListIterator listIterator = null; |
| List classes = null; |
| |
| |
| label0: { |
| |
| log2("getting ThreadReference objects"); |
| try { |
| allThreads = vm.allThreads(); |
| classes = vm.classesByName(testedClassName); |
| testedclass = (ReferenceType) classes.get(0); |
| } catch ( Exception e) { |
| log3("ERROR: Exception at very beginning !? : " + e); |
| expresult = returnCode1; |
| break label0; |
| } |
| |
| listIterator = allThreads.listIterator(); |
| for (;;) { |
| try { |
| thread2 = (ThreadReference) listIterator.next(); |
| if (thread2.name().equals(threadName)) |
| break ; |
| } catch ( NoSuchElementException e ) { |
| log3("ERROR: NoSuchElementException for listIterator.next()"); |
| log3("ERROR: NO 'main' thread ?????????!!!!!!!"); |
| expresult = returnCode1; |
| break label0; |
| } |
| } |
| } |
| |
| label1: { |
| if (expresult != returnCode0) |
| break label1; |
| |
| if (!vm.canGetCurrentContendedMonitor()) { |
| log2(".......vm.canGetCurrentContendedMonitor() == false; the test is cancelled"); |
| break label1; |
| } |
| log2(".......vm.canGetCurrentContendedMonitor() == true"); |
| |
| |
| log2(" supending the thread2"); |
| thread2.suspend(); |
| |
| log2(" monitor = thread2.currentContendedMonitor();"); |
| try { |
| monitor = waitForMonitor(thread2); |
| } catch ( UnsupportedOperationException e1 ) { |
| log3("ERROR: UnsupportedOperationException"); |
| expresult = returnCode1; |
| } catch ( Exception e2 ) { |
| expresult = returnCode1; |
| log3("ERROR: UNEXPECTED Exception is thrown : " + e2); |
| e2.printStackTrace(); |
| } |
| if (expresult != returnCode0) |
| break label1; |
| |
| |
| if (vm.canGetMonitorInfo()) { |
| log2(".......vm.canGetMonitorInfo() == true"); |
| log2(" checking up on no UnsupportedOperationException trown"); |
| try { |
| monitor.waitingThreads(); |
| log2(" no Exception thrown"); |
| } catch ( UnsupportedOperationException e1 ) { |
| log3("ERROR: UnsupportedOperationException"); |
| expresult = returnCode1; |
| } catch ( Exception e2 ) { |
| expresult = returnCode1; |
| log3("ERROR: UNEXPECTED Exception is thrown : " + e2); |
| e2.printStackTrace(); |
| } |
| } else { |
| log2(".......vm.canGetMonitorInfo() == false"); |
| log2(" checking up on UnsupportedOperationException trown"); |
| try { |
| monitor.waitingThreads(); |
| log3("ERROR: no UnsupportedOperationException thrown"); |
| expresult = returnCode1; |
| } catch ( UnsupportedOperationException e1 ) { |
| log2(" UnsupportedOperationException thrown"); |
| } catch ( Exception e2 ) { |
| log3("ERROR: UNEXPECTED Exception is thrown : " + e2); |
| e2.printStackTrace(); |
| expresult = returnCode1; |
| } |
| } |
| |
| } |
| |
| log2(" resuming the thread2 (for case it was suspended)"); |
| thread2.resume(); |
| |
| log2("......instructing mainThread to leave synchronized block"); |
| pipe.println("continue"); |
| line = pipe.readln(); |
| if (!line.equals("docontinue")) { |
| log3("ERROR: returned string is not 'docontinue'"); |
| expresult = returnCode4; |
| } |
| |
| //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| log2(" the end of testing"); |
| if (expresult != returnCode0) |
| testExitCode = FAILED; |
| } |
| log1(" TESTING ENDS"); |
| |
| //-------------------------------------------------- test summary section |
| //------------------------------------------------- standard end section |
| |
| pipe.println("quit"); |
| log2("waiting for the debuggee to finish ..."); |
| debuggee.waitFor(); |
| |
| int status = debuggee.getStatus(); |
| if (status != PASSED + PASS_BASE) { |
| log3("debuggee returned UNEXPECTED exit status: " + |
| status + " != PASS_BASE"); |
| testExitCode = FAILED; |
| } else { |
| log2("debuggee returned expected exit status: " + |
| status + " == PASS_BASE"); |
| } |
| |
| if (testExitCode != PASSED) { |
| logHandler.complain("TEST FAILED"); |
| } |
| return testExitCode; |
| } |
| |
| // This function will wait until the debuggee thread has reached its monitor. |
| // The debuggee thread is already running, and should just be a few instructions |
| // away from reaching the monitor. We should not have to wait a long time. |
| // |
| // The debuggee thread should be suspended before calling this method, |
| // and it should still be suspended after this call. |
| private ObjectReference waitForMonitor(ThreadReference threadReference) throws Exception { |
| // Wait for at most 10 seconds. That is more than enough. |
| long remainingWaitMs = 10000; |
| final long iterationWaitMs = 100; |
| |
| while (remainingWaitMs >= 0) { |
| ObjectReference monitor = threadReference.currentContendedMonitor(); |
| if (monitor != null) { |
| return monitor; |
| } |
| |
| log2("Waiting for currentContendedMonitor. remainingWaitMs " + remainingWaitMs); |
| remainingWaitMs -= iterationWaitMs; |
| |
| try { |
| // Resume thread so it can reach its monitor. Suspend again after wait. |
| threadReference.resume(); |
| Thread.currentThread().sleep(iterationWaitMs); |
| } finally { |
| threadReference.suspend(); |
| } |
| } |
| |
| String msg = String.format("No currentContendedMonitor in thread '%s'", threadReference); |
| throw new Exception(msg); |
| } |
| } |
