Hi Alex and Paul! I see three way to resolve this:
1) Disable unload timer in PluginManager in MacOS. 2) Makes it possible for engine plugin to relive when it was shut down and its entry point is called again. I have tested this solution and it seems to work, but some details must be more tested, like shutdown/relive of trace's ConfigStorage. In any case, with active sandbox code it will never really unload the libraries, just the plugins. 3) Disable things related to sandbox (https://paulbeachsblog.blogspot.com/2021/01/firebird-embedded-in-sandboxed-macos-app.html) I think 1 is the way to go. Opinions? Adriano On 10/01/2022 16:19, Adriano dos Santos Fernandes wrote: > Hi! > > As reported in #7041, MacOS build (even in Intel) is returning errors > after some time (1 min) used: > > Authentication error > connection shutdown > > I had debugged the problem, it happens when plugin manager tries to > unload plugins. > > When it calls dlclose no error is returned but library is not really > unloaded. > > Next time it loads the plugin again, it is already in memory and the > memory is not reinitialized nor constructors run again. Only the plugin > entry point is called. > > That makes things unusable. > > I have tracked why it is not unloading. > > There is two reasons for it: > 1) Usage of framework APIs / Objective-C > 2) Usage of __thread variables > > 1) https://developer.apple.com/forums/thread/122591 > 2) https://github.com/rust-lang/rust/issues/28794#issuecomment-368693049 > > In our code (1) is happening with mac_utils.m and (2) due to > HAVE___THREAD being defined. > > I have tested fixing (2) changing fb_tls.h define: > > -#if defined(HAVE___THREAD) > +#if defined(HAVE___THREAD) && !defined(DARWIN) > > And reverting mac_utils changes it worked. > > There is also suspicious code in > src/yvalve/config/os/darwin/config_root.cpp but it has not needed to be > changed. > > I have not deeply tested why this works in v3. It seems to not try to > unload plugins. > > > Adriano Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
