View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0006642 | JEDI VCL | 00 JVCL Components | public | 2018-07-05 17:59 | 2019-04-30 15:15 |
| Reporter | swright | Assigned To | obones | ||
| Priority | normal | Severity | crash | Reproducibility | N/A |
| Status | resolved | Resolution | fixed | ||
| Product Version | Daily / GIT | ||||
| Target Version | Fixed in Version | Daily / GIT | |||
| Summary | 0006642: JvWaitingGradient/JvImagedrawThread deadlock condition | ||||
| Description | Execute method calls EnterUnpausableSection Execute method then calls Synchronize(Draw); which pauses the thread to execute the draw method in main thread. In the main thread an event occurs that changes the Active property of the JvWaitingGradient to False before the draw event, this makes the main thread Acquire FPauseSection and both threads are deadlocked. Possibly the Syncronise call should come after the thread releases FPauseSection. | ||||
| Additional Information | Delphi 10.1 Berlin / JVCL-3.51 APR 2018 (installed via GetIt package manager) | ||||
| Tags | No tags attached. | ||||
|
|
Could you check if the issue is still present in the latest GIT content? If yes, please provide the zipped sources of an application showing this. |
|
2018-07-18 17:38
|
WGTest.zip (5,340 bytes) |
|
|
fix, move Synchronize(Draw); outside of TCriticalSection. procedure TJvImageDrawThread.Execute; begin NameThread(ThreadName); try while not Terminated do begin Sleep(FDelay); EnterUnpauseableSection; try if Terminated then Exit; finally LeaveUnpauseableSection; Synchronize(Draw); end; end; except // ignore exception end; end; |
|
|
Created a pull request for this one: https://github.com/project-jedi/jvcl/pull/96 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2018-07-05 17:59 | swright | New Issue | |
| 2018-07-18 16:05 | obones | Note Added: 0021548 | |
| 2018-07-18 16:05 | obones | Status | new => feedback |
| 2018-07-18 17:38 | swright | File Added: WGTest.zip | |
| 2018-07-18 17:39 | swright | Note Added: 0021555 | |
| 2019-04-26 20:26 | mh | Note Added: 0021751 | |
| 2019-04-30 15:15 | obones | Status | feedback => resolved |
| 2019-04-30 15:15 | obones | Fixed in Version | => Daily / GIT |
| 2019-04-30 15:15 | obones | Resolution | open => fixed |
| 2019-04-30 15:15 | obones | Assigned To | => obones |
