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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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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 ClassPrepareEvent set,            <BR>
 * the method returns values corresponding to one               <BR>
 * which suspends the most threads.                             <BR>
 * The cases to check include event sets containing             <BR>
 * one to three threads with all possible combinations:         <BR>
 *    NONE, THREAD, ALL, NONE+THREAD, NONE+ALL,                 <BR>
 *    THREAD+ALL, NONE+THREAD+ALL                               <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>
 * The debugger then prepares an array containing sets of               <BR>
 * enabled requests for each combination to check.                      <BR>
 * <BR>
 * In second phase to check the above,                                  <BR>
 * the debugger and the debuggee perform the following.                 <BR>
 * - The debugger resumes the debuggee and waits for ClassPrepareEvents.<BR>
 * - The debuggee makes new checked classes prepared and invokes then   <BR>
 *   the methodForCommunication to be suspended and                     <BR>
 *   to inform the debugger with the event.                             <BR>
 * - Upon getting the ClassPrepareEvents,                               <BR>
 *   the debugger performs the check required.                          <BR>
 * Note. To inform each other of needed actions, the debugger and       <BR>
 *       and the debuggee use debuggee's variable "instruction".        <BR>
 * <BR>
 * In third phase when 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 suspendpolicy001 extends JDIBase {

    public static void main (String argv[]) {

        int result = run(argv, System.out);

        if (result != 0) {
            throw new RuntimeException("TEST FAILED with result " + result);
        }
    }

    public static int run (String argv[], PrintStream out) {

        int exitCode = new suspendpolicy001().runThis(argv, out);

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

    //  ************************************************    test parameters

    private String debuggeeName =
        "nsk.jdi.EventSet.suspendPolicy.suspendpolicy001a";

    //====================================================== test program
    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;
            }

            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 {

        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();
        debuggee.setMainThread(event.thread());

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

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

        ThreadReference mainThread = debuggee.mainThread();
        setupBreakpointForCommunication(debuggeeClass);

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

        log1("     TESTING BEGINS");

        int classFlags = 0;

        String classNames[] = {
            "nsk.jdi.EventSet.suspendPolicy.TestClass0",
            "nsk.jdi.EventSet.suspendPolicy.TestClass1",
            "nsk.jdi.EventSet.suspendPolicy.TestClass2",
            "nsk.jdi.EventSet.suspendPolicy.TestClass3",
            "nsk.jdi.EventSet.suspendPolicy.TestClass4",
            "nsk.jdi.EventSet.suspendPolicy.TestClass5",
            "nsk.jdi.EventSet.suspendPolicy.TestClass6"
        };

        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;

        EventRequest eventRequests[][] = new EventRequest[classNames.length][3];

        for ( int nr = 0; nr < eventRequests.length; nr++) {
            log2("......setting up ClassPrepareRequest for TestClass" + nr);
            switch (nr) {

              case 0:
                      eventRequests[nr][0] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_NONE, "ClassPrepareRequest" + nr);
                      eventRequests[nr][0].enable();
                      break;

              case 1:
                      eventRequests[nr][1] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_THREAD, "ClassPrepareRequest" + nr);
                      eventRequests[nr][1].enable();
                      break;

              case 2:
                      eventRequests[nr][2] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_ALL, "ClassPrepareRequest" + nr);
                      eventRequests[nr][2].enable();
                      break;

              case 3:
                      eventRequests[nr][0] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_NONE, "ClassPrepareRequest" + nr);
                      eventRequests[nr][0].enable();
                      eventRequests[nr][1] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_THREAD, "ClassPrepareRequest" + nr);
                      eventRequests[nr][1].enable();
                      break;

              case 4:
                      eventRequests[nr][0] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_NONE, "ClassPrepareRequest" + nr);
                      eventRequests[nr][0].enable();
                      eventRequests[nr][2] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_ALL, "ClassPrepareRequest" + nr);
                      eventRequests[nr][2].enable();
                      break;

              case 5:
                      eventRequests[nr][1] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_THREAD, "ClassPrepareRequest" + nr);
                      eventRequests[nr][1].enable();
                      eventRequests[nr][2] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_ALL, "ClassPrepareRequest" + nr);
                      eventRequests[nr][2].enable();
                      break;

              case 6:
                      eventRequests[nr][0] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_NONE, "ClassPrepareRequest" + nr);
                      eventRequests[nr][0].enable();
                      eventRequests[nr][1] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_THREAD, "ClassPrepareRequest" + nr);
                      eventRequests[nr][1].enable();
                      eventRequests[nr][2] = settingClassPrepareRequest(classNames[nr],
                                              SUSPEND_ALL, "ClassPrepareRequest" + nr);
                      eventRequests[nr][2].enable();
                      break;

              default:
                      throw new JDITestRuntimeException("** default case 2 **");
            }
            classFlags |= 1 << nr;
        }

        log2("......checking up on eventSets");

        vm.resume();

        for (int ne = 0; ne < eventRequests.length; ne++) {

            getEventSet();

            Event ev = eventIterator.nextEvent();
            if ( !( ev instanceof ClassPrepareEvent)) {
                 log3("ERROR: new event is not ClassPrepareEvent");
                 testExitCode = FAILED;
                 break;
            }

            String property = (String) ev.request().getProperty("number");

            int np = 0;
            for (; np < eventRequests.length; np++) {
                if (property.equals("ClassPrepareRequest" + np))
                    break;
            }

            policy = eventSet.suspendPolicy();

            if (policy != policyExpected[np]) {
                log3("ERROR: eventSet.suspendPolicy() != policyExpected");
                log3("       eventSet.suspendPolicy() == " + policy);
                log3("       policyExpected           == " + policyExpected[np]);
                testExitCode = FAILED;
            }

            switch (np) {
              case 0: eventRequests[np][0].disable();                                 break;
              case 1: eventRequests[np][1].disable();                                 break;
              case 2: eventRequests[np][2].disable();                                 break;
              case 3: eventRequests[np][0].disable(); eventRequests[np][1].disable(); break;
              case 4: eventRequests[np][0].disable(); eventRequests[np][2].disable(); break;
              case 5: eventRequests[np][1].disable(); eventRequests[np][2].disable(); break;
              case 6: eventRequests[np][0].disable(); eventRequests[np][1].disable();
                      eventRequests[np][2].disable();                                 break;
           }

            switch (policy) {
              case SUSPEND_NONE   :                      break;
              case SUSPEND_THREAD : mainThread.resume(); break;
              case SUSPEND_ALL    : vm.resume();         break;
              default: throw new JDITestRuntimeException("** default case 1 **");
            }
            classFlags &= 1 << ne;
        }
        if (classFlags != 0) {
            log3("ERROR: not all events received : " + classFlags);
            testExitCode = FAILED;
        }

        for (int i = 0; ; i++) {

            log1(":::::: case: # " + i);

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

            breakpointForCommunication();

            int instruction = ((IntegerValue)
                               (debuggeeClass.getValue(debuggeeClass.fieldByName("instruction")))).value();
            if (instruction == 0) {
                vm.resume();
                break;
            }
            //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        }
        log1("    TESTING ENDS");
        return;
    }

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

    private ClassPrepareRequest settingClassPrepareRequest ( String  testedClass,
                                                             int     suspendPolicy,
                                                             String  property       )
            throws JDITestRuntimeException {
        try {
            log2("......setting up ClassPrepareRequest:");
            log2("       class: " + testedClass + "; property: " + property);

            ClassPrepareRequest
            cpr = eventRManager.createClassPrepareRequest();
            cpr.putProperty("number", property);
            cpr.addClassFilter(testedClass);
            cpr.setSuspendPolicy(suspendPolicy);

            log2("      ClassPrepareRequest has been set up");
            return cpr;
        } catch ( Exception e ) {
            log3("ERROR: ATTENTION: Exception within settingClassPrepareRequest() : " + e);
            log3("       ClassPreparenRequest HAS NOT BEEN SET UP");
            throw new JDITestRuntimeException("** FAILURE to set up ClassPrepareRequest **");
        }
    }

}