Again, re-adding the list - please always use "reply to all". On 2018-05-24 13:56, Paal Tamas wrote: > > > Jan Kiszka <jan.kis...@siemens.com> írta: >> [re-adding the list] >> >> On 2018-05-24 13:35, Paal Tamas wrote: >>> >>> >>> Jan Kiszka <jan.kis...@siemens.com> írta: >>>> On 2018-05-24 10:50, Paal Tamas wrote: >>>>> I would like to use the same named semaphore in two separate Xenomai >>>>> binaries. I am using the Posix skin. It does not work as I am expecting >>>>> it. >>>>> The first instance of my test application creates a named semaphore. It >>>>> goes to sleep after that. The second instance of the same applications >>>>> starts than. It realizes that the semaphore with the name already exists, >>>>> so it opens it. The sem_open() returns a valid (like) pointer. After that >>>>> all semaphore functions in this second application return EINVAL (22) >>>>> (Invalid argument). Both the sem_wait() and the sem_close() function >>>>> behave this way. >>>>> >>>>> The same procedure worked fine in 2.6.2.1 (the previous version I used). >>>>> I tried 3.0.5 and the latest git repository too. The same bad behavior >>>>> there. >>>>> >>>> >>>> Did you configure userspace with --enable-pshared? >>>> >>> >>> Yes. I invoked the "configure" script this way: >>> >>> ./configure --with-core=cobalt --enable-smp --enable-pshared >> >> OK. >> >>> >>> This is my configuration: >>> >>> /xeno-config --info >>> Xenomai version: Xenomai/cobalt v3.0.6 -- #50ef005 (2018-05-13 16:21:13 >>> +0200) >>> Linux clickandmove-NUC 4.9.51xeno #1 SMP Wed May 23 05:14:47 PDT 2018 >>> x86_64 x86_64 x86_64 GNU/Linux >>> Kernel parameters: BOOT_IMAGE=/boot/vmlinuz-4.9.51xeno >>> root=UUID=7e90a17b-1ea0-4b84-849f-7d621fe6d580 ro quiet splash vt.handoff=7 >>> I-pipe release #5 detected >>> Cobalt core 3.0.6 detected >>> Compiler: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.5) >>> Build args: --with-core=cobalt --enable-smp --enable-pshared >>> >>> When I tried the git repository I cheated a bit. I could not find the >>> configure script (neither some others) and all the makefile.in files were >>> missing, so I copied these files from the xenomai-3.0.6.tar.bz2. I've never >>> tried the git repositore before, always used the bz2 file(s). In case of >>> the 3.0.5 version I used the bz2 file for the tests. >> >> Just run scripts/bootstrap when using a git checkout. > > Do I need any parameters to the scripts/bootstrap script in this case or I > should simply run it? > >> >> To ensure that we are truly hunting a Xenomai issue: Does your testcase >> work with plain Linux? >> > > Yes, it works fine under plain Linux. Sorry that I forgot to mention this...
Confirmed. In fact, your test also exposes some cleanup issue: When terminating a process, Xenomai does not remove the semaphore, and you need to reboot to remove the object. Will look into these problems. Jan -- Siemens AG, Corporate Technology, CT RDA IOT SES-DE Corporate Competence Center Embedded Linux _______________________________________________ Xenomai mailing list Xenomai@xenomai.org https://xenomai.org/mailman/listinfo/xenomai
