suspendpolicy016.java

/*
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 * 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
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 */

package nsk.jdi.EventSet.suspendPolicy;

import nsk.share.*;
import nsk.share.jpda.*;
import nsk.share.jdi.*;

import com.sun.jdi.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;

import java.util.*;
import java.io.*;

/**
 * The test for the implementation of an object of the type     <BR>
 * EventSet.                                                    <BR>
 *                                                              <BR>
 * The test checks that results of the method                   <BR>
 * <code>com.sun.jdi.EventSet.suspendPolicy()</code>            <BR>
 * complies with its spec.                                      <BR>
 * <BR>
 * The test checks that for a VMDeathEvent set,                 <BR>
 * the method returns values corresponding to one               <BR>
 * which suspends the most threads.                             <BR>
 * The cases to check include event set containing two more     <BR>
 * VMDeathRequests with suspendPolicies                         <BR>
 *      SUSPEND_ALL and SUSPEND_EVENT_THREAD.                   <BR>
 * <BR>
 * The test has three phases and works as follows.              <BR>
 * <BR>
 * In first phase,                                                      <BR>
 * upon launching debuggee's VM which will be suspended,                <BR>
 * a debugger waits for the VMStartEvent within a predefined            <BR>
 * time interval. If no the VMStartEvent received, the test is FAILED.  <BR>
 * Upon getting the VMStartEvent, it makes the request for debuggee's   <BR>
 * ClassPrepareEvent with SUSPEND_EVENT_THREAD, resumes the VM,         <BR>
 * and waits for the event within the predefined time interval.         <BR>
 * If no the ClassPrepareEvent received, the test is FAILED.            <BR>
 * Upon getting the ClassPrepareEvent,                                  <BR>
 * the debugger sets up the breakpoint with SUSPEND_EVENT_THREAD        <BR>
 * within debuggee's special methodForCommunication().                  <BR>
 * <BR>
 * In second phase to check the above,                                  <BR>
 * the debugger and the debuggee perform the following loop.            <BR>
 * - The debugger sets up VMDeathRequests, resumes                      <BR>
 *   the debuggee, and waits for the VMDeathEvent.                      <BR>
 * - The debuggee ends to be resulting in the event.                    <BR>
 * - Upon getting new event, the debugger                               <BR>
 *   performs the check corresponding to the event.                     <BR>
 * <BR>
 * Note. To inform each other of needed actions, the debugger and       <BR>
 *       and the debuggee use debuggee's variable "instruction".        <BR>
 * In third phase, at the end,                                          <BR>
 * the debuggee changes the value of the "instruction"                  <BR>
 * to inform the debugger of checks finished, and both end.             <BR>
 * <BR>
 */

public class suspendpolicy016 extends JDIBase {

    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) {

        int exitCode = new suspendpolicy016().runThis(argv, out);

        if (exitCode != PASSED) {
            System.out.println("TEST FAILED");
        }
        return testExitCode;
    }

    private String debuggeeName =
        "nsk.jdi.EventSet.suspendPolicy.suspendpolicy016a";

    private String testedClassName =
        "nsk.jdi.EventSet.suspendPolicy.TestClass";

    //====================================================== test program

    int policyToCheck = 0;

    private int runThis (String argv[], PrintStream out) {

        argsHandler     = new ArgumentHandler(argv);
        logHandler      = new Log(out, argsHandler);
        Binder binder   = new Binder(argsHandler, logHandler);

        waitTime        = argsHandler.getWaitTime() * 60000;

        try {
            log2("launching a debuggee :");
            log2("       " + debuggeeName);
            if (argsHandler.verbose()) {
                debuggee = binder.bindToDebugee(debuggeeName + " -vbs");
            } else {
                debuggee = binder.bindToDebugee(debuggeeName);
            }
            if (debuggee == null) {
                log3("ERROR: no debuggee launched");
                return FAILED;
            }
            log2("debuggee launched");
        } catch ( Exception e ) {
            log3("ERROR: Exception : " + e);
            log2("       test cancelled");
            return FAILED;
        }

        debuggee.redirectOutput(logHandler);

        vm = debuggee.VM();

        eventQueue = vm.eventQueue();
        if (eventQueue == null) {
            log3("ERROR: eventQueue == null : TEST ABORTED");
            vm.exit(PASS_BASE);
            return FAILED;
        }

        log2("invocation of the method runTest()");
        switch (runTest()) {

            case 0 :  log2("test phase has finished normally");
                      log2("   waiting for the debuggee to finish ...");
                      debuggee.waitFor();

                      log2("......getting the debuggee's exit status");
                      int status = debuggee.getStatus();
                      if (status != PASS_BASE) {
                          log3("ERROR: debuggee returned UNEXPECTED exit status: " +
                              status + " != PASS_BASE");
                          testExitCode = FAILED;
                      } else {
                          log2("......debuggee returned expected exit status: " +
                              status + " == PASS_BASE");
                      }
                      break;

            default : log3("ERROR: runTest() returned unexpected value");

            case 1 :  log3("test phase has not finished normally: debuggee is still alive");
                      log2("......forcing: vm.exit();");
                      testExitCode = FAILED;
                      try {
                          vm.exit(PASS_BASE);
                      } catch ( Exception e ) {
                          log3("ERROR: Exception : e");
                      }
                      break;

            case 2 :  log3("test cancelled due to VMDisconnectedException");
                      log2("......trying: vm.process().destroy();");
                      testExitCode = FAILED;
                      try {
                          Process vmProcess = vm.process();
                          if (vmProcess != null) {
                              vmProcess.destroy();
                          }
                      } catch ( Exception e ) {
                          log3("ERROR: Exception : e");
                      }
                      break;
            }

        return testExitCode;
    }


   /*
    * Return value: 0 - normal end of the test
    *               1 - ubnormal end of the test
    *               2 - VMDisconnectedException while test phase
    */

    private int runTest() {

        try {
            testRun();

            log2("waiting for VMDeathEvent");
            getEventSet();
            if ( !(eventIterator.nextEvent() instanceof VMDeathEvent) ) {
                log3("ERROR: last event is not the VMDeathEvent");
                return 1;
            }
            check();

            log2("waiting for VMDisconnectEvent");
            getEventSet();
            if ( !(eventIterator.nextEvent() instanceof VMDisconnectEvent) ) {
                log3("ERROR: last event is not the VMDisconnectEvent");
                return 1;
            }

            return 0;

        } catch ( VMDisconnectedException e ) {
            log3("ERROR: VMDisconnectedException : " + e);
            return 2;
        } catch ( Exception e ) {
            log3("ERROR: Exception : " + e);
            return 1;
        }

    }

    private void testRun()
                 throws JDITestRuntimeException, Exception {

        if ( !vm.canRequestVMDeathEvent() ) {
            log2("......vm.canRequestVMDeathEvent == false :: test cancelled");
            vm.exit(PASS_BASE);
            return;
        }


        eventRManager = vm.eventRequestManager();

        log2("......getting ClassPrepareEvent for debuggee's class");
        ClassPrepareRequest cpRequest = eventRManager.createClassPrepareRequest();
        cpRequest.setSuspendPolicy( EventRequest.SUSPEND_EVENT_THREAD);
        cpRequest.addClassFilter(debuggeeName);
        cpRequest.enable();
        vm.resume();
        getEventSet();
        cpRequest.disable();

        ClassPrepareEvent event = (ClassPrepareEvent) eventIterator.next();
        debuggeeClass = event.referenceType();

        if (!debuggeeClass.name().equals(debuggeeName))
           throw new JDITestRuntimeException("** Unexpected ClassName for ClassPrepareEvent **");
        log2("      received: ClassPrepareEvent for debuggeeClass");

        log2("......setting up ClassPrepareEvent for breakpointForCommunication");

        String            bPointMethod = "methodForCommunication";
        String            lineForComm  = "lineForComm";
        BreakpointRequest bpRequest;
        ThreadReference   mainThread = debuggee.threadByNameOrThrow("main");
        bpRequest = settingBreakpoint(mainThread,
                                      debuggeeClass,
                                      bPointMethod, lineForComm, "zero");
        bpRequest.enable();

        vm.resume();

    //------------------------------------------------------  testing section

        log1("     TESTING BEGINS");

        EventRequest eventRequest1 = null;
        EventRequest eventRequest2 = null;
        EventRequest eventRequest3 = null;

        final int SUSPEND_POLICY = EventRequest.SUSPEND_NONE;
        final int SUSPEND_NONE   = EventRequest.SUSPEND_NONE;
        final int SUSPEND_THREAD = EventRequest.SUSPEND_EVENT_THREAD;
        final int SUSPEND_ALL    = EventRequest.SUSPEND_ALL;

        int policyExpected[] = {    SUSPEND_NONE,
                                    SUSPEND_THREAD,
                                    SUSPEND_ALL,
                                    SUSPEND_THREAD,
                                    SUSPEND_ALL,
                                    SUSPEND_ALL,
                                    SUSPEND_ALL      };
        int policy = 0;

        breakpointForCommunication();

            //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ variable part

        eventRequest2 = settingVMDeathRequest (SUSPEND_THREAD, "VMDeathRequest2");
        eventRequest2.enable();
        eventRequest3 = settingVMDeathRequest (SUSPEND_ALL, "VMDeathRequest3");
        eventRequest3.enable();

        policyToCheck = policyExpected[5];
        mainThread.resume();

            //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

        log1("    TESTING ENDS");
        return;
    }


    // ============================== test's additional methods

    private VMDeathRequest settingVMDeathRequest( int    suspendPolicy,
                                                  String property       )
            throws JDITestRuntimeException {
        try {
            log2("......setting up VMDeathRequest:");
            log2("      suspendPolicy: " + suspendPolicy + "; property: " + property);

            VMDeathRequest
            vmdr = eventRManager.createVMDeathRequest();
            vmdr.putProperty("number", property);
            vmdr.setSuspendPolicy(suspendPolicy);

            return vmdr;
        } catch ( Exception e ) {
            log3("ERROR: ATTENTION: Exception within settingVMDeathRequest() : " + e);
            log3("       VMDeathRequest HAS NOT BEEN SET UP");
            throw new JDITestRuntimeException("** FAILURE to set up a VMDeathRequest **");
        }
    }

    void check() {
        log2("......checking up on eventSet.suspendPolicy()");
        int policy = eventSet.suspendPolicy();
        if (policy != policyToCheck) {
            log3("ERROR: eventSet.suspendPolicy() != policyExpected");
            log3("       eventSet.suspendPolicy() == " + policy);
            log3("       policyExpected           == " + policyToCheck);
            testExitCode = FAILED;
        }
        vm.resume();
    }

}