From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <43707B3E.8060900@domain.hid> Date: Tue, 08 Nov 2005 11:17:34 +0100 From: Philippe Gerum MIME-Version: 1.0 Subject: Re: [Xenomai-help] Task lock/unlock unlock difficulties References: <002f01c5e44a$b675bf50$1000000a@domain.hid> In-Reply-To: <002f01c5e44a$b675bf50$1000000a@domain.hid> Content-Type: text/plain; charset=Windows-1252; format=flowed Content-Transfer-Encoding: 7bit List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Hans-J. Ude" Cc: Xenomai-help@domain.hid Hans-J. Ude wrote: > I need to lock/unlock the scheduler from time to time. I'm using the RTAI > native skin in userspace and tried the rt_task_set_mode approach but was not > very successfus yet. I've tried this: > > int task_lock(void) { return rt_task_set_mode(0, T_LOCK, &mask); } > int task_unlock(void) { return rt_task_set_mode(T_LOCK, mask, NULL); } > > To support nested calls to these functions i've implement an array of masks > and lock/unlock counters to maintain a stack. I've also tried a single mask > and no stack and with no mask at all. No success. It's hard to explain what > exactly happens because I'm porting an existing software with a really bad > design but the original works. I found there are xenomai functions called > xnpod_lock_sched(), which are directly called from e.g. the vxWorks skin. > Obviously xn_pod_lock has an integrated counting. Otherwise the vx skin > would be incompatible. But when i include pod.h i get a whole bunch of error > messages, likely due to missing defines. So can someone show me a way to a > clean working counting lock/unlock mechanism. Bypassing the interface won't help, especially if you think that there is an issue in the core. Please write a simple test case illustrating the use you want to make of sched locking using the native skin - which possibly exhibits the issue - and post it. > > TAI, > Hans > > > _______________________________________________ > Xenomai-help mailing list > Xenomai-help@domain.hid > https://mail.gna.org/listinfo/xenomai-help > -- Philippe.