Reinier Olislagers wrote:
Apparently my crashes in a dll that use Firebird have to do with
initialization sections in my business layer creating a single instance
of my db layer.
Distilled reproducible code that demonstrates problem:
https://bitbucket.org/reiniero/fpc_laz_patch_playground/downloads/dllcrash.zip
1. Please update your Firebird server details in dbinterface.pas to your
situation (hostname etc)
2. In businesslayer.pas, $define CRASH to see the problem.
The code in question is:
initialization
DBLayer:=TDBInterface.Create;
finalization
DBLayer.Free;
... so probably initialization order plays a part?!?
How should I fix this?
What happens if you move the responsibility for initialising and closing
the database connection to the app-level code? In other words, the app
does something like
writeln('Starting demo');
writeln('TheAnswer is:');
InitialiseBackend;
try
writeln(TheAnswer)
finally
FinaliseBackend
end;
writeln('Ending demo');
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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