Hello all, A couple of questions regarding handling of strings, dynamic arrays and objects -especially exceptions- when writing programs that use shared libraries (.dll, .so).
In Delphi we have the option of either using packages to ensure that there is only one instance of the memory allocator or use ShareMem.pas that installs a memory allocator that can handle memory allocations across libraries. Given that in FPC/Lazarus there are no "packages" in the Delphi sense what is the equivalent of ShareMem.pas? Is it cmem.pp? Regarding objects, in Delphi an object cannot safely cross dll boundaries because separate class record(s) for it exist in each executable file. OK, actually it can if one is certain that the class records compiled in each executable are identical. But if an exception crosses dll boundaries then you are in trouble, because the operator "is" does not work due to the class pointer that points to another Exception class record than the one known by the handling executable. The best way to solve this is to put the class Exception at least inside a package that all executables use so at least "is" will work for Exception. Is there a way to handle this problem in FPC that does not have packages? TIA Constantine. _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
