This pages summarizes "changes" in JACK client API between version 1 and 2

"not public" means that symbol is available in library but not declared in public header

Symbols present in jack1 but missing in jack2

• B _jack_get_microseconds - not public
• D jack_builtin_NULL_functions - not public
• D jack_builtin_audio_functions - not public
• D jack_builtin_midi_functions - not public
• D jack_builtin_port_types - not public
• D jack_tmpdir - not public
• T cleanup_mlock - not public
• T default_jack_error_callback - not public
• T default_jack_info_callback - not public
• T jack_attach_port_segment - not public
• T jack_attach_shm - not public
• T jack_call_sync_client - not public
• T jack_call_timebase_master - not public
• T jack_cleanup_shm - not public
• T jack_client_alloc - not public
• T jack_client_alloc_internal - not public
• T jack_client_deliver_request - not public
• T jack_client_handle_port_connection - not public
• T jack_client_invalidate_port_buffers - not public
• T jack_clock_source_name - not public
• T jack_default_server_name - not public
• T jack_destroy_shm - not public
• T jack_dump_timestamps - public in <jack/timestamps.h>
• T jack_generate_unique_id - not public
• T jack_get_free_shm_info - not public
• T jack_get_mhz - not public
• T jack_get_microseconds_from_cycles - not public
• T jack_get_microseconds_from_system - not public
• T jack_get_port_functions - not public
• T jack_get_process_done_fd - not public
• T jack_hpet_init - not public
• T jack_init_time - not public
• T jack_init_timestamps - public in <jack/timestamps.h>
• T jack_initialize_shm - not public
• T jack_messagebuffer_add - not public
• T jack_messagebuffer_exit - not public
• T jack_messagebuffer_init - not public
• T jack_pool_alloc - not public
• T jack_pool_release - not public
• T jack_port_by_id_int - not public
• T jack_port_by_name_int - not public
• T jack_port_name_equals - not public
• T jack_port_new - not public
• T jack_register_server - not public
• T jack_release_shm - not public
• T jack_release_shm_info - not public
• T jack_reset_timestamps - public in <jack/timestamps.h>
• T jack_resize_shm - not public
• T jack_server_dir - not public
• T jack_set_clock_source - not public
• T jack_shmalloc - not public
• T jack_start_freewheel - not public
• T jack_stop_freewheel - not public
• T jack_timestamp - public in <jack/timestamps.h>
• T jack_transport_copy_position - not public
• T jack_unregister_server - not public
• T jack_user_dir - not public
• T silent_jack_error_callback - not public
• T start_server - not public

Symbols present in jack2 but missing in jack1

• Lot of mangled C++ names - not public
• T jack_client_kill_thread - new API function, appeared in r2548
• T jack_client_stop_thread - new API function, appeared in r2548
• T jack_get_client_pid - new API function, appeared in r2299
• T jack_get_version - new API function, appered in trunk in r2339, appeared in control branch in r2060
• T jack_get_version_string - new API function, appered in trunk in r2339, appeared in control branch in r2060
• T jack_log - not public
• T jack_port_type_id - new API function, appered in trunk in r2339, appeared in control branch in r2051
• T jack_tls_allocate_key(unsigned int*) - not public
• T jack_tls_free_key(unsigned int) - not public
• T jack_tls_get(unsigned int) - not public
• T jack_tls_set(unsigned int, void*) - not public
• T set_threaded_log_function - not public

Script to create above overview

nm -CDg 1/usr/lib/libjack.so | grep -v ' U '|sed 's/^[0-9a-f]* //'|sort> jack1.syms
nm -CDg 2/usr/lib/libjack.so | grep -v ' U '|sed 's/^[0-9a-f]* //'|sort> jack2.syms
diff -u jack1.syms jack2.syms > jack12.diff
grep '^-[A-Z]' jack12.diff | sed 's/^-//'
grep '^+[A-Z]' jack12.diff | sed 's/^+//'|grep -v ::
for i in `grep '^+[A-Z]' jack12.diff | grep -v :: | sed 's/^+. \([^ (]*\).*/\1/'` ; do echo "searching for $i ..." ; find 2 -type f -exec grep -Hn $i {} \; ; done|grep -v 'Binary file'
for i in `grep '^-[A-Z]' jack12.diff  | sed 's/^-. //'` ; do echo "searching for $i ..." ; find 1 -type f -exec grep -Hn $i {} \; ; done|grep -v 'Binary file'