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* macOS: Pass JackMachSemaphore send right via mach_msg IPC (#788)Peter Bridgman2022-01-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * macOS: Pass JackMachSemaphore send right via mach_msg IPC Previously, JackMachSemaphore would communicate the send right for the semaphore object from the server to a client via a named service registered via `bootstrap_register`. However, to do this, it would register the semaphore's port as the service port directly. In theory this ought to be fine, however in practice, macOS `launchd`, which provides the `bootstrap_register` interface, does not correctly detect when such a port becomes dead, and incorrectly believes that the service that it provides is forever alive, even past the end of the `jackd` process' (and therefore the semaphore's) existence. This seems to be *specific* to semaphore ports, as `launchd` is expecting a standard IPC port, owned by the task, not the kernel. This prevents `jackd` from later registering another service with the same name, as `launchd` rejects the registration as conflicting with an active service. To get around this, `jackd` previously added a counter to the end of the named service registrations, allowing old services to remain in the system until the end of the session. To prevent things getting out of hand, this was capped at 98 service registrations for a given semaphore name. This led to #784, in which running a client for the 99th time resulted in the semaphore creation failing and the client failing to connect. As `launchd` outlives multiple runs of `jackd`, this situation persisted across restarts of `jackd`, requiring a restart of the user's session (i.e. a reboot) to fix. An initial attempt at fixing this (see #785) tried passing the port rights directly via shared memory, however mach is too clever for us and foils that plan by having port names be looked up in a per-task table (sensible when you think about it). In this commit, we use mach IPC messages to transfer the send right for the semaphore from the server to the client. By registering a standard IPC port with the bootstrap server, the service registrations are correctly torn down when the ports are destroyed. It works something like this: * Server creates IPC port and registers it globally via `bootstrap_register` * Server listens on IPC port for messages * Client looks up IPC port via `bootstrap_look_up` * Client sends it a message * Server replies with a message containing a send right to the semaphore's port * Client is then free to use the semaphore port as before. This resolves #784. * Improve error handling * Add myself to Authors
* Update AUTHORS (mgeier, #458)Thomas Brand2019-04-271-0/+1
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* Add Arnout Diels (arre525) to authorsThomas Brand2019-03-261-0/+1
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* Add Viktor Wilhelmsson (vikwil) to authorsThomas Brand2019-03-261-0/+1
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* Update AUTHORS fileThomas Brand2019-01-261-1/+12
| | | | | | | | | | | | | | | | | | | The newly added persons have contributed code to JACK in the past. (mentioned in at least one file header) tests/cpu.c: Copyright (C) 2005 Samuel TRACOL linux/alsa/usx2y.c: Copyright (C) 2005 Karsten Wiese, Rui Nuno Capela linux/alsa/ice1712.h: Copyright (C) 2000 by Jaroslav Kysela <perex@suse.cz> example-clients/metro.c: Copyright (C) 2002 Anthony Van Groningen dbus/controller_iface_transport.c: Copyright (C) 2008 Juuso Alasuutari common/netjack.h: Copyright (C) 2003 Robert Ham <rah@bash.sh> common/jack/ringbuffer.h: Copyright (C) 2003 Rohan Drape common/jack/metadata.h: Copyright (C) 2011 David Robillard common/JackMidiPort.cpp:Original JACK MIDI implementation Copyright (C) 2004 Ian Esten linux/firewire/JackFFADODriver.cpp:Copyright (C) 2012 Jonathan Woithe common/jack/statistics.h: Copyright (C) 2004 Rui Nuno Capela, Lee Revell The authors list should be up-to-date now.
* Update AUTHORS file from jackd manpageThomas Brand2019-01-241-0/+12
| | | | | | | | | | | | | | | | | -Add "new" alumni authors according to jackd manpage listed under "Programming" +Andy Wingo +Jack O'Quin +Jeremy Hall +Johnny Petrantoni +Jussi Laako +Kai Vehmanen +Melanie Thielker +Steve Harris +Taybin Rutkin +Tilman Linneweh +Stefan Schwandter +Alexandre Prokoudine
* Update and sort AUTHORS fileThomas Brand2019-01-241-29/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | -Add new authors according to https://github.com/jackaudio/jack2/graphs/contributors -Order alphabetically by FIRST NAME (this is simple for |sort) Karl Lindén (karllinden) Timo Wischer (twischer-adit) Thomas Brand (7890) Cédric Schieli (sdrik) Markus Seeber (mseeber) Alba Mendez (jmendeth) David Runge (dvzrv) Olivier Humbert (trebmuh) Yasuhiro Fujii (y-fujii) Gaël Portay (gportay) James P. Thomas (jamespthomas) Andreas Müller (schnitzeltony) Holger Dehnhardt (dehnhardt) Rui Nuno Capela (rncbc) Michał Szymański (smiszym) Francis Pinteric (fjapinteric) Bruno Vernay (BrunoVernay) Hunter L. Allen (allenh1) Edward Betts (EdwardBetts) Thomas Petazzoni (tpetazzoni) James Cowgill (jcowgill) Samuel Martin (tSed) Bernhard M. Wiedemann (bmwiedemann) Jacek Konieczny (Jajcus) Andrew Kelley (andrewrk) Maks Naumov (maksqwe) Julien Acroute (Vampouille) Youri Westerman (4c0n) Olaf Hering (olafhering) Ricardo Crudo (ricardocrudo) Maxim Grishin (Igevorse) Valentin David (valentindavid) Joshua Moyerman (jmoyerman) Arnaud Rebillout (elboulangero) Alexander Graf (agraf) Eliot Blennerhassett (eliotb) Deven Lahoti (dlahoti) Not added (need more info) github handles fps mojofunk e9925248 farwayer l1n stratakis m-grabner bkuhls escitalopram
* AUTHORS.rst: Adding a separate AUTHORS file.David Runge2019-01-231-0/+39
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