Hello, during the tests of minidriver on Windows Vista there was a problem related to the using of OpenSC in multi-threads.
SC context create/release are not thread safe -- they allocate/release memory referenced by the pointers fromthe static 'struct sc_card_driver'. (It concerns also, if present, load/unload of dynamic card driver.) https://github.com/OpenSC/OpenSC/blob/master/src/libopensc/ctx.c#L749 Static 'struct sc_card_driver' is present in each card-xx. Currently, in minidriver-write-mode branch, there is a temporary hack, but I think that this problem has to be resolved on the OpenSC side. For example to introduce reference counter into 'sc_card_driver' and use it in the sc-context functions. What would you say? Do you know other places in the OpenSC code, that needs to be revisited from the thread safe point of view? Kind regards, Viktor. _______________________________________________ opensc-devel mailing list opensc-devel@lists.opensc-project.org http://www.opensc-project.org/mailman/listinfo/opensc-devel
