Running medialibrary prevents VLC to close immediately
On close, VLC joins a medialibrary thread, which takes a long time to complete:
0x00007ffff66e8495 in __GI___pthread_timedjoin_ex (threadid=140736687134464, thread_return=0x0, abstime=0x0, block=<optimized out>) at pthread_join_common.c:89
89 pthread_join_common.c: Aucun fichier ou dossier de ce type.
(gdb) bt
#0 0x00007ffff66e8495 in __GI___pthread_timedjoin_ex (threadid=140736687134464, thread_return=0x0, abstime=0x0, block=<optimized out>) at pthread_join_common.c:89
#1 0x00007ffff644cd53 in std::thread::join() () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2 0x00007fffeff5bccc in medialibrary::DiscovererWorker::stop() (this=0x611000572a00) at src/discoverer/DiscovererWorker.cpp:67
#3 0x00007fffeff152ea in medialibrary::MediaLibrary::~MediaLibrary() (this=0x61200021fc40, __in_chrg=<optimized out>) at /usr/include/c++/8/bits/unique_ptr.h:334
#4 0x00007fffeff15659 in medialibrary::MediaLibrary::~MediaLibrary() (this=0x61200021fc40, __in_chrg=<optimized out>) at src/MediaLibrary.cpp:129
#5 0x00007fffefed3633 in std::default_delete<medialibrary::IMediaLibrary>::operator()(medialibrary::IMediaLibrary*) const (this=0x60300004bb98, __ptr=0x61200021fc40) at /usr/include/c++/8/bits/unique_ptr.h:81
#6 0x00007fffefecd41f in std::unique_ptr<medialibrary::IMediaLibrary, std::default_delete<medialibrary::IMediaLibrary> >::~unique_ptr() (this=0x60300004bb98, __in_chrg=<optimized out>) at /usr/include/c++/8/bits/unique_ptr.h:274
#7 0x00007fffefee23bb in MediaLibrary::~MediaLibrary() (this=0x60300004bb80, __in_chrg=<optimized out>) at ../../modules/misc/medialibrary/medialibrary.h:112
#8 0x00007fffefee23f2 in MediaLibrary::~MediaLibrary() (this=0x60300004bb80, __in_chrg=<optimized out>) at ../../modules/misc/medialibrary/medialibrary.h:112
#9 0x00007fffefec9d1b in Close(vlc_medialibrary_module_t*) (module=0x60c000009f40) at ../../modules/misc/medialibrary/medialib.cpp:1376
#10 0x00007ffff6cd2bb7 in generic_stop (func=0x7fffefec9c7f <Close(vlc_medialibrary_module_t*)>, ap=0x7fffffffda30) at ../../src/modules/modules.c:269
#11 0x00007ffff6cd28f2 in vlc_module_unload (module=0x60b000012730, deinit=0x7ffff6cd2aaf <generic_stop>) at ../../src/modules/modules.c:245
#12 0x00007ffff6cd2d7f in module_unneed (obj=0x60c000009f40, module=0x60b000012730) at ../../src/modules/modules.c:293
#13 0x00007ffff6e77fc4 in libvlc_MlRelease (p_ml=0x60c000009f40) at ../../src/misc/medialibrary.c:124
#14 0x00007ffff6c95cab in libvlc_InternalCleanup (p_libvlc=0x611000000180) at ../../src/libvlc.c:402
#15 0x00007ffff71697c3 in libvlc_release (p_instance=0x60d000000040) at ../../lib/core.c:99
#16 0x0000555555557e7f in main (argc=2, argv=0x7fffffffdf48) at ../../bin/vlc.c:276
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