Blocking the main thread when calling the pause method of AVPlayer.

Basic

• iPhone 11
• iOS 17.5.1

Main Thread

1. libsystem_kernel.dylib___ulock_wait (in libsystem_kernel.dylib) +8
2. libdispatch.dylib__dlock_wait (in libdispatch.dylib) +52
3. libdispatch.dylib__dispatch_thread_event_wait_slow (in libdispatch.dylib) +52
4. libdispatch.dylib___DISPATCH_WAIT_FOR_QUEUE__ (in libdispatch.dylib) +364
5. libdispatch.dylib__dispatch_sync_f_slow (in libdispatch.dylib) +144
6. MediaToolbox_fpic_CopyCurrentEvent (in MediaToolbox) +132
7. AVFCore___104-[AVPlayer _setRate:withVolumeRampDuration:playImmediately:rateChangeReason:affectsCoordinatedPlayback:]_block_invoke_2 (in AVFCore) +244
8. AVFCore-[AVPlayer _setRate:withVolumeRampDuration:playImmediately:rateChangeReason:affectsCoordinatedPlayback:] (in AVFCore) +276
9. AVFCore-[AVPlayer setRate:] (in AVFCore) +56
10. call AVPlayer pause

Thread 81 name: fpic-sync

1. libsystem_kernel.dylib___ulock_wait (in libsystem_kernel.dylib) +8
2. libdispatch.dylib__dlock_wait (in libdispatch.dylib) +52
3. libdispatch.dylib__dispatch_thread_event_wait_slow (in libdispatch.dylib) +52
4. libdispatch.dylib___DISPATCH_WAIT_FOR_QUEUE__ (in libdispatch.dylib) +364
5. libdispatch.dylib__dispatch_sync_f_slow (in libdispatch.dylib) +144
6. MediaToolbox_itemasync_CopyProperty (in MediaToolbox) +588
7. MediaToolbox_fpic_CurrentItemMoment (in MediaToolbox) +184
8. MediaToolbox___fpic_EstablishCurrentEventForCurrentItem_block_invoke (in MediaToolbox) +136
9. libdispatch.dylib__dispatch_client_callout (in libdispatch.dylib) +16
10. libdispatch.dylib__dispatch_lane_barrier_sync_invoke_and_complete (in libdispatch.dylib) +52
11. MediaToolbox_fpic_ServiceCurrentEvent (in MediaToolbox) +600
12. MediaToolbox___fpic_NotifyServiceCurrentEvent_block_invoke (in MediaToolbox) +912
13. libdispatch.dylib__dispatch_call_block_and_release (in libdispatch.dylib) +28
14. libdispatch.dylib__dispatch_client_callout (in libdispatch.dylib) +16
15. libdispatch.dylib__dispatch_lane_serial_drain (in libdispatch.dylib) +744
16. libdispatch.dylib__dispatch_lane_invoke (in libdispatch.dylib) +428
17. libdispatch.dylib__dispatch_root_queue_drain (in libdispatch.dylib) +388
18. libdispatch.dylib__dispatch_worker_thread (in libdispatch.dylib) +256
19. libsystem_pthread.dylib__pthread_start (in libsystem_pthread.dylib) +132
20. libsystem_pthread.dylib_thread_start (in libsystem_pthread.dylib) +4

Thread 93 name: com.apple.coremedia.player.async.0x303c60240.P/GR

1. libsystem_kernel.dylib_mach_msg2_trap (in libsystem_kernel.dylib) +8
2. libsystem_kernel.dylib_mach_msg2_internal (in libsystem_kernel.dylib) +76
3. libsystem_kernel.dylib_mach_msg_overwrite (in libsystem_kernel.dylib) +432
4. libsystem_kernel.dylib_mach_msg (in libsystem_kernel.dylib) +20
5. libdispatch.dylib__dispatch_mach_send_and_wait_for_reply (in libdispatch.dylib) +540
6. libdispatch.dylib_dispatch_mach_send_with_result_and_wait_for_reply (in libdispatch.dylib) +56
7. libxpc.dylib_xpc_connection_send_message_with_reply_sync (in libxpc.dylib) +260
8. CoreMedia_FigXPCConnectionSendSyncMessageCreatingReply (in CoreMedia) +288
9. CoreMedia_FigXPCRemoteClientSendSyncMessageCreatingReply (in CoreMedia) +44
10. MediaToolbox_remoteXPCPlayer_SetRateWithOptions (in MediaToolbox) +148
11. MediaToolbox_playerasync_runOneCommand (in MediaToolbox) +768
12. MediaToolbox_playerasync_runAsynchronousCommandOnQueue (in MediaToolbox) +180
13. libdispatch.dylib__dispatch_client_callout (in libdispatch.dylib) +16
14. libdispatch.dylib__dispatch_lane_serial_drain (in libdispatch.dylib) +744
15. libdispatch.dylib__dispatch_lane_invoke (in libdispatch.dylib) +428
16. libdispatch.dylib__dispatch_root_queue_drain (in libdispatch.dylib) +388
17. libdispatch.dylib__dispatch_worker_thread (in libdispatch.dylib) +256
18. libsystem_pthread.dylib__pthread_start (in libsystem_pthread.dylib) +132
19. libsystem_pthread.dylib_thread_start (in libsystem_pthread.dylib) +4