- DELPHI XE10 CRITICAL SECTION IN THREADTERMINATED CODE
- DELPHI XE10 CRITICAL SECTION IN THREADTERMINATED FREE
- DELPHI XE10 CRITICAL SECTION IN THREADTERMINATED WINDOWS
Soon after we noticed our totals and averages were now wrong, and eventually figured out that it's aggregating the first X rows of the CDS, where X is the number of filtered results. OnFilterRecords instead, as the filter had become too complicated for the simpler version. However recently I had to stop using CDS.Filter and use. LAgg.DisplayFormat := '#0' + IfThen(lColumns.Values = 'A', '.#') LAgg.FieldName := lColumns.Values + IfThen(lColumns.Values = 'T', 'Total', 'Average') LAgg.Expression := IfThen(lColumns.Values = 'T', 'SUM', 'AVG') + '(' + lColumns.Values + ')' LAgg.FieldKind := TFieldKind.fkAggregate I was originally using the CDS.Filter property to filter the dataset, and creating runtime aggregated fields using this code: lAgg := TAggregateField.Create(cdDataOrRecord) I'm loading in a dataset which I then filter and pull some aggregates from. If that is an actual problem, how would I address it properly? I'm struggling to understand whether the assertion Lock was destructed while held points to an actual problem or whether it is safe to ignore this. M圜ustomComponents.dll!winrt::M圜ustomComponents::implementation::M圜ustomView::~M圜ustomView() Line 32 C++ M圜ustomComponents.dll!winrt::M圜ustomComponents::implementation::M圜ustomView_base::~M圜ustomView_base() C++ M圜ustomComponents.dll!winrt::implements::~implements() C++ M圜ustomComponents.dll!winrt::M圜ustomComponents::implementation::BaseView::~BaseView() C++
The callstack that I can obtain looks as follows: concrt140d.dll!Concurrency::critical_section::~critical_section() + 79 bytes Unknown When the 3D component gets destroyed, the Visual C++ runtime throws an assertion that looks as follows: Debug Assertion Failed!įile: d:\agent\_work\18\s\src\vctools\crt\crtw32\concrt\rtlocks.cppĮxpression: Lock was destructed while held _renderLoopController.ShutdownQueueAsync() In order to stop the rendering thread the destructor of the 3D component contains the following code: M圜ustomView::~M圜ustomView() Singleton& operator=(Singleton&) = delete Singleton& operator=(const Singleton&) = delete I'm working with C++11 and I'm trying to implement a singleton which works at multi-threading project.
DELPHI XE10 CRITICAL SECTION IN THREADTERMINATED FREE
Just remember, threading issues are not consistently reproducible, so absence of a crash still does not mean you have fully bug free code. Just call Free on critical section, or if you like use FreeAndNil that will ultimately crash if your shutdown process is broken. If there are other involved threads still running, they may acquire the lock before Free is executed.
DELPHI XE10 CRITICAL SECTION IN THREADTERMINATED CODE
In other words, if Acquire solves your problem, real issue is in another castle and you haven't really solved anything, you have just slightly changed the dynamics, which may work and may not work, depending on all other code involved.Ĭalling Release before Free would be meaningless, for the same reason. So the answer to first question, whether acquiring critical section can raise exception, is yes.Īlso according to documentation, you should not try to handle such exceptions, but you have to debug the application, because origin of the problem is in some other code.īut the most notable reason why you should not call Acquire before releasing critical section instance on any platform is that if at that point there are some other threads that are doing some work and are relying on that critical section means your shutdown and cleaning process is completely broken.
DELPHI XE10 CRITICAL SECTION IN THREADTERMINATED WINDOWS
This mayĬause global destructors to not be called.Ĭalling FPoolingCS.Acquire on Windows platform calls EnterCriticalSection function.
While a process is exiting, if a call to EnterCriticalSection wouldīlock, it will instead terminate the process immediately. The threads waiting for ownership of the deleted critical section is If a critical section is deleted while it is still owned, the state of Do not handle a possible deadlockĮxception instead, debug the application. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Specified by the following registry value: Operation on the critical section times out. This function can raise EXCEPTION_POSSIBLE_DEADLOCK if a wait This is not the correct way to release critical section for several reasons.Īccording to documentation EnterCriticalSection function
0 kommentar(er)
