Hi Daniil,

The fix looks good.

One comment though.
Did you miss to fix a timeout and comment in VirtualMachine/suspend/suspend001.java for breakpoint() the same way as it is done in ThreadReference/suspend/suspend001.java?
Or it is intentional?

Thanks,
Serguei

On 2/27/19 21:51, Daniil Titov wrote:
Hi Chris,

Please review a new version that has this timeout increased as you suggested.

Webrev: http://cr.openjdk.java.net/~dtitov/8207367/webrev.05/
Bug: https://bugs.openjdk.java.net/browse/JDK-8207367

Thanks!
--Daniil

On 2/27/19, 6:57 PM, "Chris Plummer" <[email protected]> wrote:

     Hi Daniil,
I don't think exclfilter001.java and filter001.java are quite right: 92 waitTime = argHandler.getWaitTime();
       154         long waitTimeout = Utils.adjustTimeout(waitTime * 200);
       161             eventSet = debugee.VM().eventQueue().remove(waitTimeout);
This looks like a 1 second wait whereas before I thought it was 5, which
     I thought was a good time to avoid timeouts from dropped packets. You
     also are using 5 seconds for remove() calls in other tests in this
     webrev. So I suggest just replacing 200 with 1000,
The rest of the changes look good. thanks, Chris On 2/27/19 5:44 PM, Daniil Titov wrote:
     > Hi Chris and Serguei,
     >
     > Please review  the new version of the fix that includes the changes 
Chris suggested.
     >
     > Webrev: http://cr.openjdk.java.net/~dtitov/8207367/webrev.04
     > Bug: https://bugs.openjdk.java.net/browse/JDK-8207367
     >
     > Thanks!
     > --Daniil
     >
     >
     > On 2/27/19, 5:10 PM, "Daniil Titov" <[email protected]> wrote:
     >
     >      Hi Chris,
     >
     >      >>    Is there a reason not to adjust it by 
argHandler.getWaitTime()?
     >      I agree, for consistency it makes sense to adjust it by 
argHandler.getWaitTime().
     >
     >      Thanks.
     >      Daniil
     >
     >      On 2/27/19, 4:54 PM, "Chris Plummer" <[email protected]> 
wrote:
     >
     >          On 2/27/19 4:09 PM, Daniil Titov wrote:
     >          > Hi Chris,
     >          >
     >          >> It look like the exclfilter001.java loop will always end up 
looping for  eventWaitTime seconds:
     >          > It is true for  revision 3 of the patch 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.03/test/hotspot/jtreg/vmTestbase/nsk/jdi/ClassUnloadRequest/addClassExclusionFilter/exclfilter001.java.sdiff.html
     >          >
     >          > But in revision 1 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.01/test/hotspot/jtreg/vmTestbase/nsk/jdi/ClassUnloadRequest/addClassExclusionFilter/exclfilter001.java.sdiff.html
   the loop could finish earlier if timeout happens on lines 160 or 183 (since 
eventSet is null).
     >          > When talking about 4 seconds I was referring to lines 160, 
163 and 183. Now the timeout passed in remove(waitTime) method is 4 seconds in Mach5. 
But the total waiting time is limited by 200 seconds. If no events are delivered for 
4 seconds timespan then the method returns earlier.
     >          > It seems as 4 seconds is quite sufficient, but we could 
increase it if there are some concerns here.
     >          >
     >          > 153         long waitTime = Utils.adjustTimeout(1000);
     >          > 160             eventSet = 
debugee.VM().eventQueue().remove(waitTime);
     >          > 185                 eventSet = 
debugee.VM().eventQueue().remove(waitTime);
     >
     >          Is there a reason not to adjust it by argHandler.getWaitTime()?
     >
     >          Chris
     >
     >          >
     >          >
     >          > Thanks!
     >          >
     >          > --Daniil
     >          >
     >          >
     >          > On 2/27/19, 3:08 PM, "Chris Plummer" 
<[email protected]> wrote:
     >          >
     >          >
     >          >
     >          >      On 2/27/19 2:33 PM, Daniil Titov wrote:
     >          >      > Hi Chris,
     >          >      >
     >          >      > The change in while loop  in exclfilter001.java 
between the first and the last revisions was to ensure that all events are drained 
before the method returns and the next check starts. It used to wait for 5 minutes and 
now it keeps receiving events in portions waiting for 1 seconds at every iteration.
     >          >      It look like the exclfilter001.java loop will always end 
up looping for
     >          >      eventWaitTime seconds:
     >          >
     >          >         92         eventWaitTime =
     >          >      Utils.adjustTimeout(argHandler.getWaitTime() * 10000);
     >          >
     >          >        125             receiveEvents(eventWaitTime, 
patterns[i]);
     >          >
     >          >      I think you said that argHandler.getWaitTime() is 5 and
     >          >      Utils.adjustTimeout() is another 4x for mach5 jobs, so 
this would mean a
     >          >      total of 200 seconds, and this is how much time the loop 
would always
     >          >      take since it loops for eventWaitTime seconds.
     >          >      >   You mentioned in one of previous emails that due to 
network issues  it might be the case that for some iteration we fail to receive an event 
within this smaller timeout. But later, if I understood you right, you suggested that 4 
seconds ( Utils.adjustTimeout(1000) adjusts timeout for Mach5 builds to 4 seconds) 
should be sufficient.
     >          >      Actually I was going more by the 
argHandler.getWaitTime() adjustment,
     >          >      which I thought was 5. Mach5 will multiply that by 4. I 
think 1s is too
     >          >      short but 5s is probably ok, and 20s for mach5 jobs 
should prevent any
     >          >      noise from rare network issues, except for serious ones 
that we can't
     >          >      expect to recover from.
     >          >      >    I agree that it's better to make the test return 
earlier and I will revert changes in exclfilter001.java and filter001.java to the first 
revision.
     >          >      Ok.
     >          >      >
     >          >      > For consistency I will change line 153 to take into 
account a wait time specified in argHandler.getWaitTime()
     >          >      > 153         long waitTime = Utils.adjustTimeout(1000);
     >          >      >
     >          >      Ok.
     >          >      > I am sorry I missed you comments abut Utils.java. You 
are right we don’t need a new method and Utils.waitForCondition() should be sufficient.
     >          >      > There is no need for passing logger into since if the 
thread is interrupted the error is thrown and the test fails.  Will send a new webrev as 
soon as testing completes.
     >          >      thanks,
     >          >
     >          >      Chris
     >          >      > Thanks!
     >          >      > Daniil
     >          >      >
     >          >      >
     >          >      > On 2/27/19, 12:08 PM, "Chris Plummer" 
<[email protected]> wrote:
     >          >      >
     >          >      >      Hi Daniil,
     >          >      >
     >          >      >      In exclfilter001.java, since the first revision 
you changed the while
     >          >      >      loop to be "while (true)". I'm not sure of the 
reasoning. It used to
     >          >      >      exit the first time remove() didn't return an 
EventSet. Now it retries
     >          >      >      until the total waittime is exceeded.
     >          >      >
     >          >      >      When waiting for an event, sometimes you use:
     >          >      >
     >          >      >         91         eventWaitTime =
     >          >      >      Utils.adjustTimeout(argHandler.getWaitTime() * 
10000);
     >          >      >
     >          >      >      and sometimes:
     >          >      >
     >          >      >        153         long waitTime = 
Utils.adjustTimeout(1000);
     >          >      >
     >          >      >      Why the discrepancy. In one case you are willing 
to wait 50 seconds for
     >          >      >      an event and in the other only 5.
     >          >      >
     >          >      >      I think you missed my initial comment on 
Utils.java. See below:
     >          >      >
     >          >      >      > In Utils.java, I think wait() should be moved 
right after
     >          >      >      > waitForCondition() and maybe given a more 
descriptive name. It seems
     >          >      >      > to basically the same as waitForCondition(), except you 
added a "log"
     >          >      >      > parameter and slightly changed the behavior. 
Are these behavior
     >          >      >      > differences necessary? Could you share code 
with the existing
     >          >      >      > waitForCondition()?
     >          >      >
     >          >      >      thanks,
     >          >      >
     >          >      >      Chris
     >          >      >
     >          >      >      On 2/27/19 9:03 AM, Daniil Titov wrote:
     >          >      >      > Hi Serguei and Chris,
     >          >      >      >
     >          >      >      > Thank you for reviewing this change. Please 
review a new version of the fix that addresses these findings.
     >          >      >      >
     >          >      >      > Bug: 
https://bugs.openjdk.java.net/browse/JDK-8207367
     >          >      >      > Webrev: 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.03
     >          >      >      >
     >          >      >      > Best regards,
     >          >      >      > Daniil
     >          >      >      >
     >          >      >      > From: <[email protected]>
     >          >      >      > Organization: Oracle Corporation
     >          >      >      > Date: Tuesday, February 26, 2019 at 6:50 PM
     >          >      >      > To: Daniil Titov <[email protected]>, Chris Plummer 
<[email protected]>, OpenJDK Serviceability <[email protected]>
     >          >      >      > Subject: Re: RFR 8207367: 10 vmTestbase/nsk/jdi 
tests timed out when running with jtreg
     >          >      >      >
     >          >      >      > Hi Daniil,
     >          >      >      >
     >          >      >      > It looks good to me.
     >          >      >      > I have some minor comments though.
     >          >      >      > 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02/test/hotspot/jtreg/vmTestbase/nsk/jdi/ClassUnloadRequest/addClassFilter/filter001.java.frames.html
     >          >      >      >
     >          >      >      >   163                 if(eventSet != null) {
     >          >      >      >   Space is missed after if
     >          >      >      >
     >          >      >      >
     >          >      >      > 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02/test/hotspot/jtreg/vmTestbase/nsk/jdi/EventQueue/remove/remove004.java.frames.html
     >          >      >      >    70  * In first one, second thread waits for any 
incoming event from the    <BR>
     >          >      >      >    71  * debugger which is sleeping for some time; 
hence, <BR>
     >          >      >      >    72  * no events are expected to be received at the 
debugger end.           <BR>
     >          >      >      >   <BR> is not aligned at 71
     >          >      >      >
     >          >      >      >
     >          >      >      >   While you are at this code, could you, please,
     >          >      >      >   also fix unneeded spaces at the lines? :
     >          >      >      >   516             } catch ( 
InterruptedException e1) {
     >          >      >      >   ...
     >          >      >      >   526             } catch ( Exception e ) {
     >          >      >      >
     >          >      >      > 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02/test/hotspot/jtreg/vmTestbase/nsk/jdi/EventQueue/remove/remove004a.java.frames.html
     >          >      >      >   111                                         
Utils.adjustTimeout(argHandler.getWaitTime() * 10000),
     >          >      >      >   112                                        
100,
     >          >      >      >   113                                         
remove004a::log1);
     >          >      >      >    Line 112 is not properly aligned
     >          >      >      >
     >          >      >      >
     >          >      >      > 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02/test/hotspot/jtreg/vmTestbase/nsk/jdi/EventQueue/remove_l/remove_l004.java.frames.html
     >          >      >      >    65  * In the first one the first assertion is 
checked up on as follows:    <BR>
     >          >      >      >    66  * the debugger sleeps for some time;           
                       <BR>
     >          >      >      >    67  * hence, no event is expected in the debugger 
within WAITTIME, and     <BR>
     >          >      >      >    <BR> at 66 is not aligned
     >          >      >      >    Thank you for catching and fixing the typo 
at 67!
     >          >      >      >
     >          >      >      > 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02/test/hotspot/jtreg/vmTestbase/nsk/jdi/VirtualMachine/dispose/dispose002.java.frames.html
     >          >      >      >
     >          >      >      >   295                         }, 
Utils.adjustTimeout(waitTime * 60000), 1000, dispose002::log3);
     >          >      >      >   A separate line is needed for next wait() 
argument
     >          >      >      >
     >          >      >      >
     >          >      >      > 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02/test/hotspot/jtreg/vmTestbase/nsk/jdi/VirtualMachine/dispose/dispose002a.java.frames.html
     >          >      >      >   128                          while(true) {
     >          >      >      >   ...
     >          >      >      >   130                              
if(instruction.equals("check_done")){
     >          >      >      >   131                                  if 
(test_thread.isAlive()) {
     >          >      >      >   132                                      
exitCode = FAILED;
     >          >      >      >   133                                  }
     >          >      >      >
     >          >      >      >    Space is missed after while.
     >          >      >      >    Some logErr("...") for failed case would be 
useful.
     >          >      >      >
     >          >      >      >
     >          >      >      > 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02/test/hotspot/jtreg/vmTestbase/nsk/jdi/VirtualMachine/dispose/dispose003.java.frames.html
     >          >      >      >   260                         }, 
Utils.adjustTimeout(waitTime * 60000), 1000, dispose003::log3);
     >          >      >      >   New line is needed for next wait() argument
     >          >      >      >
     >          >      >      >
     >          >      >      > 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02/test/hotspot/jtreg/vmTestbase/nsk/jdi/VirtualMachine/dispose/dispose003a.java.frames.html
     >          >      >      >   129                          while(true) {
     >          >      >      >   130                              instruction 
= pipe.readln();
     >          >      >      >   131                              
if(instruction.equals("check_done")) {
     >          >      >      >   132                                  if 
(test_thread.isAlive()) {
     >          >      >      >   133                                      
exitCode = FAILED;
     >          >      >      >   134                                  }
     >          >      >      >    Space is missed after while and if.
     >          >      >      >    Some logErr("...") for failed case would be 
useful.
     >          >      >      >
     >          >      >      > 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02/test/hotspot/jtreg/vmTestbase/nsk/jdi/VirtualMachine/dispose/dispose004.java.frames.html
     >          >      >      >   284                         }, 
Utils.adjustTimeout(waitTime * 60000), 1000, dispose004::log3);
     >          >      >      >   New line is needed for next wait() argument
     >          >      >      >
     >          >      >      >
     >          >      >      > 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02/test/hotspot/jtreg/vmTestbase/nsk/jdi/VirtualMachine/dispose/dispose004a.java.frames.html
     >          >      >      >   130                          while(true) {
     >          >      >      >   131                              instruction 
= pipe.readln();
     >          >      >      >   132                              
if(instruction.equals("check_done")) {
     >          >      >      >   133                                  if 
(test_thread.isAlive()) {
     >          >      >      >   134                                      
exitCode = FAILED;
     >          >      >      >   135                                  }
     >          >      >      >    Space is missed after while and if.
     >          >      >      >    Some logErr("...") for failed case would be 
useful.
     >          >      >      >
     >          >      >      >
     >          >      >      > Thanks,
     >          >      >      > Serguei
     >          >      >      >
     >          >      >      > On 2/26/19 6:06 PM, Daniil Titov wrote:
     >          >      >      > Hi Chris,
     >          >      >      >
     >          >      >      > Please review a new version of the webrev that 
slightly changes method receiveEvents(long,pattern)  in the following tests:
     >          >      >      >   
-vmTestbase/nsk/jdi/ClassUnloadRequest/addClassExclusionFilter/exclfilter001.java
     >          >      >      >   
-vmTestbase/nsk/jdi/ClassUnloadRequest/addClassFilter/filter001.java)
     >          >      >      >
     >          >      >      >
     >          >      >      > The new changes ensure that 
receiveEvents(long,pattern)  method keeps receiving events in a while loop even if eventSet 
returned by  debugee.VM().eventQueue().remove(waitTime) is a null due to timeout.
     >          >      >      >
     >          >      >      >
     >          >      >      > Bug: 
https://bugs.openjdk.java.net/browse/JDK-8207367
     >          >      >      > Webrev: 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.02
     >          >      >      >
     >          >      >      > Thanks!
     >          >      >      > -Daniil
     >          >      >      >
     >          >      >      > On 2/26/19, 11:41 AM, "Chris Plummer" 
mailto:[email protected] wrote:
     >          >      >      >
     >          >      >      >      Ok. I think you mentioned below that 
default wait time will be 5
     >          >      >      >      seconds. That seems sufficient to avoid a 
timeout if there are some
     >          >      >      >      minor network issues and some packets are 
lost.
     >          >      >      >
     >          >      >      >      Changes look good.
     >          >      >      >
     >          >      >      >      thanks,
     >          >      >      >
     >          >      >      >      Chris
     >          >      >      >
     >          >      >      >      On 2/26/19 10:01 AM, Daniil Titov wrote:
     >          >      >      >      > Hi Chris,
     >          >      >      >      >
     >          >      >      >      > Yes , it is correct. For example in this 
particular test the timeout is expected (line 283 expects that breakpoint() returns 
returnCode3 that is set on line 460 when eventSet on line 456 is null due to a timeout in 
eventQueue.remove()) and shortening it makes the whole test fit in jtreg time limits.
     >          >      >      >      >
     >          >      >      >      >    281                    log2("       
checking up that the thread2 is not at breakpoint1 because of suspension");
     >          >      >      >      >     282                   expresult = 
breakpoint();
     >          >      >      >      >     283                   if (expresult 
!= returnCode3) {
     >          >      >      >      >     284                       log3("ERROR: no 
timeout for waiting for BreakpointEvent when the thread2 is suspended");
     >          >      >      >      >     285                       expresult 
= returnCode1;
     >          >      >      >      >     286                       break 
label1;
     >          >      >      >      >     287                   } else
     >          >      >      >      >
     >          >      >      >      >
     >          >      >      >      >    445        private int breakpoint () {
     >          >      >      >      >     446   
     >          >      >      >      >     447           int returnCode = 
returnCode0;
     >          >      >      >      >     448   
     >          >      >      >      >     449           log2("       waiting for 
BreakpointEvent");
     >          >      >      >      >     450   
     >          >      >      >      >     451           labelBP:
     >          >      >      >      >     452               for (;;) {
     >          >      >      >      >     453   
     >          >      >      >      >     454                   log2("       new:  
eventSet = eventQueue.remove();");
     >          >      >      >      >     455                   try {
     >          >      >      >      >     456                       eventSet = 
eventQueue.remove (Utils.adjustTimeout(waitTime*1000));
     >          >      >      >      >     457                       if 
(eventSet == null) {
     >          >      >      >      >     458                           
log2("::::::  timeout when waiting for a BreakpintEvent");
     >          >      >      >      >     459   //                        
log3("ERROR:  timeout for waiting for a BreakpintEvent");
     >          >      >      >      >     460                           
returnCode = returnCode3;
     >          >      >      >      >     461                           break 
labelBP;
     >          >      >      >      >     462                       }
     >          >      >      >      >
     >          >      >      >      >>     And I just noticed the space right after 
"remove". Can you remove it?
     >          >      >      >      > Sure. Will do.
     >          >      >      >      >
     >          >      >      >      > Thanks!
     >          >      >      >      > --Daniil
     >          >      >      >      >
     >          >      >      >      > On 2/25/19, 7:26 PM, "Chris Plummer" 
mailto:[email protected] wrote:
     >          >      >      >      >
     >          >      >      >      >      Hi Daniil,
     >          >      >      >      >
     >          >      >      >      >      For suspend001, are you saying the 
following is expected to timeout
     >          >      >      >      >      sometimes, so you need a shorter 
waittime to avoid making the whole test
     >          >      >      >      >      time out?
     >          >      >      >      >
     >          >      >      >      >        456                     eventSet 
= eventQueue.remove
     >          >      >      >      >      
(Utils.adjustTimeout(waitTime*1000));
     >          >      >      >      >
     >          >      >      >      >      And I just noticed the space right after 
"remove". Can you remove it?
     >          >      >      >      >
     >          >      >      >      >      thanks,
     >          >      >      >      >
     >          >      >      >      >      Chris
     >          >      >      >      >
     >          >      >      >      >      On 2/25/19 6:57 PM, Daniil Titov 
wrote:
     >          >      >      >      >      > Hi Chris,
     >          >      >      >      >      >
     >          >      >      >      >      > The timeout issue mentioned in 
the bug is about jtreg aborting the tests since they are running longer than the maximum allowed 
time. That happens since these tests  use extreme long internal delays,  e.g. a sleep for 5 
minutes  or a wait for 5 minutes for a case when no events ( and a notify()) are expected. 
Reducing these internal delays makes the test passing within the default jtreg timeout ( 2 
minutes).
     >          >      >      >      >      >
     >          >      >      >      >      > Best regards,
     >          >      >      >      >      > Daniil
     >          >      >      >      >      >
     >          >      >      >      >      > On 2/25/19, 6:15 PM, "Chris 
Plummer" mailto:[email protected] wrote:
     >          >      >      >      >      >
     >          >      >      >      >      >      Ok. So how is the timeout 
issue mentioned in the bug addressed when
     >          >      >      >      >      >      there is now a shorter wait 
time?
     >          >      >      >      >      >
     >          >      >      >      >      >      Chris
     >          >      >      >      >      >
     >          >      >      >      >      >      On 2/25/19 5:04 PM, Daniil 
Titov wrote:
     >          >      >      >      >      >      > Hi Chris,
     >          >      >      >      >      >      >
     >          >      >      >      >      >      > Forgot to answer to your 
another question:
     >          >      >      >      >      >      >   >      > For these 3 
tests the event wait timeout was reduced and adjusted for test.timeout.factor:
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/Event/_itself_/event001.java
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/VirtualMachine/suspend/suspend001/TestDescription.java
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/ThreadReference/suspend/suspend001.java
     >          >      >      >      >      >      >      >      So overall is 
this a shorter or longer waittime now?
     >          >      >      >      >      >      >
     >          >      >      >      >      >      > Overall this is a shorter 
waitime now.  Instead of 300 seconds it is now 20 seconds for Mach5 jobs (they are run with 
test.timeout.factor set to 4.0) and 5 seconds for regular jtreg runs.
     >          >      >      >      >      >      >
     >          >      >      >      >      >      > Best regards,
     >          >      >      >      >      >      > Daniil
     >          >      >      >      >      >      >
     >          >      >      >      >      >      >
     >          >      >      >      >      >      > On 2/25/19, 4:38 PM, "Chris 
Plummer" mailto:[email protected] wrote:
     >          >      >      >      >      >      >
     >          >      >      >      >      >      >      Hi Daniil,
     >          >      >      >      >      >      >
     >          >      >      >      >      >      >      Yes, my point was 
that the max time you wait for a single event is much
     >          >      >      >      >      >      >      smaller now. I can 
see a possibility that with a little bit of network
     >          >      >      >      >      >      >      instability  a packet 
gets lost and resend does not happen fast enough.
     >          >      >      >      >      >      >
     >          >      >      >      >      >      >      thanks,
     >          >      >      >      >      >      >
     >          >      >      >      >      >      >      Chris
     >          >      >      >      >      >      >
     >          >      >      >      >      >      >      On 2/25/19 4:32 PM, 
Daniil Titov wrote:
     >          >      >      >      >      >      >      > Hi Chris,
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      > The code still 
waits for the whole total wait time. There is a while loop at lines 163-186 that keeps receiving new 
events (line 183) till elapsed time is less than the waittime (line 178) or a timeout happens (so 
eventSet is null).
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      > 159             
begin = System.currentTimeMillis();
     >          >      >      >      >      >      >      >     160             
    eventSet = debugee.VM().eventQueue().remove(waitTime);
     >          >      >      >      >      >      >      >     161             
    delta = System.currentTimeMillis() - begin;
     >          >      >      >      >      >      >      >     162             
    totalWaitTime -= delta;
     >          >      >      >      >      >      >      >     163             
    while (eventSet != null) {
     >          >      >      >      >      >      >      >     164             
        EventIterator eventIterator = eventSet.eventIterator();
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >     178                
     if (totalWaitTime <= 0 || exit) {
     >          >      >      >      >      >      >      >     179             
            break;
     >          >      >      >      >      >      >      >     180             
        }
     >          >      >      >      >      >      >      >     181             
        debugee.resume();
     >          >      >      >      >      >      >      >     182             
        begin = System.currentTimeMillis();
     >          >      >      >      >      >      >      >     183             
        eventSet = debugee.VM().eventQueue().remove(waitTime);
     >          >      >      >      >      >      >      >     184             
        delta = System.currentTimeMillis() - begin;
     >          >      >      >      >      >      >      >     185             
        totalWaitTime -= delta;
     >          >      >      >      >      >      >      >     186             
    }
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      > However, as I see 
now in case if a timeout happens on line 160  (eventSet is null) the loop is not executed at all.  I 
haven't observed it in test runs but I think it makes sense to adjust this test to take this potential 
case into account. I will send an updated version of the patch soon.
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      > Thanks!
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      > Best regards,
     >          >      >      >      >      >      >      > Daniil
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      > On 2/25/19, 12:21 PM, 
"Chris Plummer" mailto:[email protected] wrote:
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      Hi Daniil,
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      On 2/23/19 
1:02 PM, Daniil Titov wrote:
     >          >      >      >      >      >      >      >      > Please 
review the change that fixes timeout issues for the following 10 tests when running with jtreg and default 
timeout factor (1.0).
     >          >      >      >      >      >      >      >      In Utils.java, 
I think wait() should be moved right after
     >          >      >      >      >      >      >      >      
waitForCondition() and maybe given a more descriptive name. It seems to
     >          >      >      >      >      >      >      >      basically the same as 
waitForCondition(), except you added a "log"
     >          >      >      >      >      >      >      >      parameter and 
slightly changed the behavior. Are these behavior
     >          >      >      >      >      >      >      >      differences 
necessary? Could you share code with the existing
     >          >      >      >      >      >      >      >      
waitForCondition()?
     >          >      >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      > For the 
following 2 tests the event wait timeout was reduced and adjusted for test.timeout.factor.  Method 
receiveEvents(long,pattern) was fixed to ensure that it gracefully exits after the specified wait period 
elapsed:
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/ClassUnloadRequest/addClassExclusionFilter/exclfilter001.java
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/ClassUnloadRequest/addClassFilter/filter001.java
     >          >      >      >      >      >      >      >        183          
       eventSet = debugee.VM().eventQueue().remove(waitTime);
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      This code used 
to wait for the total remaining waittime. Now it waits a
     >          >      >      >      >      >      >      >      fixed amount 
based on:
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >        153         
long waitTime = Utils.adjustTimeout(1000);
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      How did you 
come up with this wait amount, and is it long enough to deal
     >          >      >      >      >      >      >      >      with 
occasional hiccups?
     >          >      >      >      >      >      >      >      > For these 3 
tests the event wait timeout was reduced and adjusted for test.timeout.factor:
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/Event/_itself_/event001.java
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/VirtualMachine/suspend/suspend001/TestDescription.java
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/ThreadReference/suspend/suspend001.java
     >          >      >      >      >      >      >      >      So overall is 
this a shorter or longer waittime now?
     >          >      >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      > For next 2 
tests the event wait timeout and the thread sleep time were reduced and adjusted for test.timeout.factor. 
Additional synchronization between the debugger and the debuggee was added to ensure the debugee process 
continues as soon as the test finishes the timeout related checks and advances to the next steps:
     >          >      >      >      >      >      >      >      >    - 
vmTestbase/nsk/jdi/EventQueue/remove_l/remove_l004/TestDescription.java
     >          >      >      >      >      >      >      >      >    - 
vmTestbase/nsk/jdi/EventQueue/remove/remove004/TestDescription.java
     >          >      >      >      >      >      >      >      Ok.
     >          >      >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      > Instead of 
just sleeping for 5 minutes while waiting for the debuggee test thread to complete  the tests now check 
whether the debuggee thread is alive in the loop. The total waiting timeout was adjusted for 
test.timeout.factor:
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/VirtualMachine/dispose/dispose004/TestDescription.java
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/VirtualMachine/dispose/dispose003/TestDescription.java
     >          >      >      >      >      >      >      >      >    
-vmTestbase/nsk/jdi/VirtualMachine/dispose/dispose002/TestDescription.java
     >          >      >      >      >      >      >      >      Ok.
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      thanks,
     >          >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      Chris
     >          >      >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      > Testing.
     >          >      >      >      >      >      >      >      > The 
following VM options were used  in Mach5 jobs to  verify these changes:
     >          >      >      >      >      >      >      >      > 1. No VM args
     >          >      >      >      >      >      >      >      > 2. 
-XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -XX:+TieredCompilation -XX:+UseJVMCICompiler 
-Djvmci.Compiler=grail
     >          >      >      >      >      >      >      >      > 3. -Xcomp
     >          >      >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      > Also tier1, 
tier2 and tier3 Mach5 jobs succeeded.
     >          >      >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      > To verify 
that tests succeed with test.timeout.factor set to 1.0 the following patch was used before running Mach5 
jobs.
     >          >      >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      > --- 
a/make/RunTests.gmk Thu Feb 21 15:17:42 2019 -0800
     >          >      >      >      >      >      >      >      > +++ 
b/make/RunTests.gmk Thu Feb 21 15:42:15 2019 -0800
     >          >      >      >      >      >      >      >      > @@ -826,6 
+826,7 @@
     >          >      >      >      >      >      >      >      >     else
     >          >      >      >      >      >      >      >      >       
JTREG_TIMEOUT_FACTOR ?= 4
     >          >      >      >      >      >      >      >      >     endif
     >          >      >      >      >      >      >      >      > +  
JTREG_TIMEOUT_FACTOR = 1
     >          >      >      >      >      >      >      >      >     
JTREG_VERBOSE ?= fail,error,summary
     >          >      >      >      >      >      >      >      >     
JTREG_RETAIN ?= fail,error
     >          >      >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      > Bug: 
https://bugs.openjdk.java.net/browse/JDK-8207367
     >          >      >      >      >      >      >      >      > Webrev: 
http://cr.openjdk.java.net/~dtitov/8207367/webrev.01
     >          >      >      >      >      >      >      >      >
     >          >      >      >      >      >      >      >      > Thanks!
     >          >      >      >      >      >      >      >      > --Daniil
     >          >      >      >      >      >      >      >      >
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