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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
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
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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).
*
* 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.
*
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package nsk.jdi.ThreadReference.popFrames;
import com.sun.jdi.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;
import java.util.*;
import java.io.*;
import nsk.share.*;
import nsk.share.jpda.*;
import nsk.share.jdi.*;
/**
* The test checks that the JDI method:<br>
* <code>com.sun.jdi.ThreadReference.popFrames()</code><br>
* properly throws <i>IncompatibleThreadStateException</i> or
* <i>InvalidStackFrameException</i>, if specified thread is resumed.
*
* <p>Note, the test is pending decision on the bug:<p>
*
* 4512840 JDI spec: for ThreadReference.popFrame() needs clarification<p>
*
* Actually, only one exception should be thrown in case of resumed
* thread instead of two ones.
*/
public class popframes006 {
static final String DEBUGGEE_CLASS =
"nsk.jdi.ThreadReference.popFrames.popframes006t";
// name of debuggee's main thread
static final String DEBUGGEE_THRNAME = "popframes006tThr";
// debuggee local var used to find needed stack frame
static final String DEBUGGEE_LOCALVAR = "popframes006tFindMe";
// debuggee field used to indicate that popping has been done
static final String DEBUGGEE_FIELD = "wasPopped";
// debuggee source line where it should be stopped
static final int DEBUGGEE_STOPATLINE = 80;
static final int ATTEMPTS = 5;
static final int DELAY = 500; // in milliseconds
static final String COMMAND_READY = "ready";
static final String COMMAND_GO = "go";
static final String COMMAND_QUIT = "quit";
private ArgumentHandler argHandler;
private Log log;
private IOPipe pipe;
private Debugee debuggee;
private VirtualMachine vm;
private BreakpointRequest BPreq;
private ObjectReference objRef;
private volatile int tot_res = Consts.TEST_PASSED;
private volatile boolean gotEvent = false;
public static void main (String argv[]) {
System.exit(run(argv,System.out) + Consts.JCK_STATUS_BASE);
}
public static int run(String argv[], PrintStream out) {
return new popframes006().runIt(argv, out);
}
private int runIt(String args[], PrintStream out) {
argHandler = new ArgumentHandler(args);
log = new Log(out, argHandler);
Binder binder = new Binder(argHandler, log);
debuggee = binder.bindToDebugee(DEBUGGEE_CLASS);
pipe = debuggee.createIOPipe();
vm = debuggee.VM();
debuggee.redirectStderr(log, "popframes006t.err> ");
debuggee.resume();
String cmd = pipe.readln();
if (!cmd.equals(COMMAND_READY)) {
log.complain("TEST BUG: unknown debuggee command: " + cmd);
tot_res = Consts.TEST_FAILED;
return quitDebuggee();
}
ThreadReference thrRef = null;
if ((thrRef =
debuggee.threadByName(DEBUGGEE_THRNAME)) == null) {
log.complain("TEST FAILURE: method Debugee.threadByName() returned null for debuggee thread "
+ DEBUGGEE_THRNAME);
tot_res = Consts.TEST_FAILED;
return quitDebuggee();
}
Field doExit = null;
try {
// debuggee main class
ReferenceType rType = debuggee.classByName(DEBUGGEE_CLASS);
suspendAtBP(rType, DEBUGGEE_STOPATLINE);
// debuggee field used to indicate that popping has been done
doExit = rType.fieldByName(DEBUGGEE_FIELD);
// debuggee stack frame to be popped
StackFrame stFrame = findFrame(thrRef, DEBUGGEE_LOCALVAR);
log.display("\nTrying to pop stack frame \"" + stFrame
+ "\"\n\tlocation \"" + stFrame.location()
+ "\"\n\tgot from thread reference \"" + thrRef
+ "\"\n\twith resumed debuggee thread ...");
log.display("Resuming debuggee ...");
vm.resume();
// wait for the thread resumption
int num = 0;
while (thrRef.isSuspended()) {
if (num > ATTEMPTS)
throw new Failure("unable to continue testing after "
+ ATTEMPTS
+ " attempts: debuggee thread "
+ thrRef + " is not resumed yet");
Thread.currentThread().sleep(DELAY);
num++;
}
log.display("Debugee is resumed");
// Check the tested assersion
try {
thrRef.popFrames(stFrame);
log.complain("TEST FAILED: expected IncompatibleThreadStateException or InvalidStackFrameException was not thrown"
+ "\n\twhen attempted to pop stack frame got from thread reference \""
+ thrRef + "\"\n\twith resumed debuggee thread");
tot_res = Consts.TEST_FAILED;
// actually, it should be only one expected exception instead of two ones:
// see the bug 4512840
} catch(IncompatibleThreadStateException ee) {
log.display("CHECK PASSED: caught expected " + ee);
} catch(InvalidStackFrameException ee2) {
log.display("CHECK PASSED: caught expected " + ee2);
} catch(UnsupportedOperationException une) {
if (vm.canPopFrames()) {
une.printStackTrace();
log.complain("TEST FAILED: caught exception: " + une
+ "\n\tHowever, VirtualMachine.canPopFrames() shows, that the target VM"
+ "\n\tdoes support popping frames of a threads stack: "
+ vm.canPopFrames());
tot_res = Consts.TEST_FAILED;
} else {
log.display("Warinig: unable to test an assertion: caught exception: " + une
+ "\n\tand VirtualMachine.canPopFrames() shows, that the target VM"
+ "\n\tdoes not support popping frames of a threads stack as well: "
+ vm.canPopFrames());
}
} catch(Exception ue) {
ue.printStackTrace();
log.complain("TEST FAILED: ThreadReference.popFrames(): caught unexpected "
+ ue + "\n\tinstead of IncompatibleThreadStateException or InvalidStackFrameException"
+ "\n\twhen attempted to pop stack frame got from thread reference \""
+ thrRef + "\"\n\twith resumed debuggee thread");
tot_res = Consts.TEST_FAILED;
}
} catch (Exception e) {
e.printStackTrace();
log.complain("TEST FAILURE: caught unexpected exception: " + e);
tot_res = Consts.TEST_FAILED;
} finally {
// Finish the test
// force an method to exit
if (objRef != null && doExit != null) {
try {
objRef.setValue(doExit, vm.mirrorOf(true));
} catch(Exception sve) {
sve.printStackTrace();
}
}
}
return quitDebuggee();
}
private StackFrame findFrame(ThreadReference thrRef, String varName) {
try {
List frames = thrRef.frames();
Iterator iter = frames.iterator();
while (iter.hasNext()) {
StackFrame stackFr = (StackFrame) iter.next();
try {
LocalVariable locVar =
stackFr.visibleVariableByName(varName);
// visible variable with the given name is found
if (locVar != null) {
objRef = (ObjectReference)
stackFr.getValue(locVar);
return stackFr;
}
} catch(AbsentInformationException e) {
// this is not needed stack frame, ignoring
} catch(NativeMethodException ne) {
// current method is native, also ignoring
}
}
} catch (Exception e) {
e.printStackTrace();
tot_res = Consts.TEST_FAILED;
throw new Failure("findFrame: caught unexpected exception: " + e);
}
throw new Failure("findFrame: needed debuggee stack frame not found");
}
private BreakpointRequest setBP(ReferenceType refType, int bpLine) {
EventRequestManager evReqMan =
debuggee.getEventRequestManager();
Location loc;
try {
List locations = refType.allLineLocations();
Iterator iter = locations.iterator();
while (iter.hasNext()) {
loc = (Location) iter.next();
if (loc.lineNumber() == bpLine) {
BreakpointRequest BPreq =
evReqMan.createBreakpointRequest(loc);
log.display("created " + BPreq + "\n\tfor " + refType
+ " ; line=" + bpLine);
return BPreq;
}
}
} catch (Exception e) {
e.printStackTrace();
throw new Failure("setBP: caught unexpected exception: " + e);
}
throw new Failure("setBP: location corresponding debuggee source line "
+ bpLine + " not found");
}
private void suspendAtBP(ReferenceType rType, int bpLine) {
/**
* This is a class containing a critical section which may lead to time
* out of the test.
*/
class CriticalSection extends Thread {
public volatile boolean waitFor = true;
public void run() {
try {
do {
EventSet eventSet = vm.eventQueue().remove(DELAY);
if (eventSet != null) { // it is not a timeout
EventIterator it = eventSet.eventIterator();
while (it.hasNext()) {
Event event = it.nextEvent();
if (event instanceof VMDisconnectEvent) {
log.complain("TEST FAILED: unexpected VMDisconnectEvent");
break;
} else if (event instanceof VMDeathEvent) {
log.complain("TEST FAILED: unexpected VMDeathEvent");
break;
} else if (event instanceof BreakpointEvent) {
if (event.request().equals(BPreq)) {
log.display("expected Breakpoint event occured: "
+ event.toString());
gotEvent = true;
return;
}
} else
log.display("following JDI event occured: "
+ event.toString());
}
}
} while(waitFor);
log.complain("TEST FAILED: no expected Breakpoint event");
tot_res = Consts.TEST_FAILED;
} catch (Exception e) {
e.printStackTrace();
tot_res = Consts.TEST_FAILED;
log.complain("TEST FAILED: caught unexpected exception: " + e);
}
}
}
/////////////////////////////////////////////////////////////////////////////
BPreq = setBP(rType, bpLine);
BPreq.enable();
CriticalSection critSect = new CriticalSection();
log.display("\nStarting potential timed out section:\n\twaiting "
+ (argHandler.getWaitTime())
+ " minute(s) for JDI Breakpoint event ...\n");
critSect.start();
pipe.println(COMMAND_GO);
try {
critSect.join((argHandler.getWaitTime())*60000);
if (critSect.isAlive()) {
critSect.waitFor = false;
throw new Failure("timeout occured while waiting for Breakpoint event");
}
} catch (InterruptedException e) {
critSect.waitFor = false;
throw new Failure("TEST INCOMPLETE: InterruptedException occured while waiting for Breakpoint event");
} finally {
BPreq.disable();
}
log.display("\nPotential timed out section successfully passed\n");
if (gotEvent == false)
throw new Failure("unable to suspend debuggee thread at breakpoint");
}
private int quitDebuggee() {
log.display("Final resumption of debuggee VM");
vm.resume();
pipe.println(COMMAND_QUIT);
debuggee.waitFor();
int debStat = debuggee.getStatus();
if (debStat != (Consts.JCK_STATUS_BASE + Consts.TEST_PASSED)) {
log.complain("TEST FAILED: debuggee process finished with status: "
+ debStat);
tot_res = Consts.TEST_FAILED;
} else
log.display("\nDebuggee process finished with the status: "
+ debStat);
return tot_res;
}
}