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[02:49:47] <andypugh> If inst->inputs is a pointer to an array of void pointers, and inst->output is a void pointer, is this going to do what I hope it will do?
[02:49:48] <andypugh> *(hal_float_t *)inst->output = *(hal_float_t *)inst->inputs[s];
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[06:41:55] <mhaberler> do we have a kins module for that?
http://www.youtube.com/watch?feature=player_embedded&v=UBHJqnM8RTU
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[12:17:37] <andypugh> Seems to be parallel/serial, so you ned to get to work on it. :-)
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[17:56:24] <psha> mhaberler: IndexError on EINVAL landed in my repo
[17:56:32] <psha> native iterators still under construction
[17:56:51] <mhaberler> ah
[17:57:20] <mhaberler> that'be cool; I have a c example but it looks less than intuitive
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[18:12:30] <psha> mhaberler: for b in ring: print b
[18:12:33] <psha> landed
[18:12:43] <mhaberler> whoa! super
[18:13:21] <mhaberler> man, how do you do these things so fast.. that'd take me a day or two..
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[18:15:21] <mhaberler> make me understand: that iterator is applicable only for the circular use, or both circular and queue? (methinks both)
[18:16:27] <psha> both
[18:16:55] <psha> circular use is just a way to read old data away - for iterator consumers there is no difference
[18:17:30] <psha> however probably it's better to copy buffer
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[18:17:57] <psha> current implementation provides 'view' on memory - zero copy and so on
[18:19:17] <mhaberler> what does this imply for me..
[18:19:35] <mhaberler> btw: here is my current stab at the circular read op:
http://tinyurl.com/osa3w3s
[18:20:37] <mhaberler> that be the overwriting (circular) write:
http://tinyurl.com/q28awd5
[18:21:08] <mhaberler> nb the readop is in a threadfunc so repeat is implicit
[18:22:03] <mhaberler> is the 'copy buffer in the iterator' now left as an exercise for the reader ;-?
[18:23:57] <mhaberler> q: assume 'for b in ring: print b' - does this consume the records? I would assume not; to actually consume with an iterator one would have to shift() ontop after use?
[18:28:51] <psha> probably if user want to be sure everything is ok - just do copy on python side
[18:28:54] <psha> i think
[18:29:12] <psha> yep, for b in ring consumes with iterator
[18:29:23] <psha> just like with plain list
[18:29:32] <psha> for x in list just shows you elements
[18:29:38] <psha> list.pop() - removes them
[18:30:21] <mhaberler> trying to parse..
[18:30:32] <psha> instead of 'case 0' probably 'default' would be better?
[18:31:36] <mhaberler> right
[18:33:07] <mhaberler> if 'for b in ring: ' consumes, what's the peek-only iterator then? lost..
[18:33:49] <psha> nonono )
[18:33:55] <psha> iterator never consumes
[18:33:57] <psha> just shows
[18:34:09] <psha> only consuming function is shift()
[18:34:27] <psha> even read() is not altering ring
[18:34:51] <mhaberler> for b in ring:
[18:34:53] <mhaberler> print b
[18:34:56] <mhaberler> peeks?
[18:35:01] <mhaberler> and
[18:35:04] <mhaberler> for b in ring:
[18:35:07] <mhaberler> print b
[18:35:10] <mhaberler> shift()
[18:35:13] <mhaberler> consumes?
[18:35:14] <psha> ring.shift()
[18:35:15] <psha> yep
[18:35:23] <mhaberler> got it
[18:37:42] <mhaberler> do you think the c consuming iterator example makes sense (modulo 0->default)?
[18:38:09] <mhaberler> other than that, trying to translate these research findings in mah-comprehensible code examples :)
[18:39:28] <psha> i don't think that _consuming_ iterator is great idea...
[18:39:48] <mhaberler> right, not much point
[18:40:23] <psha> btw it's better to use ring_read(void **, size_t *) instead of ring_next_size
[18:40:49] <mhaberler> well hold on: we discussed circular, and you gave me the scheme to use an iterator on client side in this case
[18:41:20] <mhaberler> writer: while (write('data') == EAGAIN)) read();
[18:41:48] <mhaberler> reader: clients use iterators, not just read
[18:41:50] <mhaberler> so?
[18:42:15] <andypugh> mhaberler: You were right about runtime-configurable pins being a memory-managment headache.
[18:42:27] <mhaberler> amen
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[18:42:53] <mhaberler> you might have to allocate hal_data_u's to be saf
[18:42:54] <mhaberler> e
[18:43:09] <psha> so it's right - ring_read is for second branch of if
[18:43:18] <psha> if (!circular)
[18:43:56] <psha> so to circular case it does not apply
[18:44:19] <psha> afk
[18:44:21] <mhaberler> right, but I thought I get away with the zero-copy version there to be more 'elegant'
[18:44:22] <mhaberler> sure
[18:48:21] <psha> maybe
[18:48:27] <psha> however you request next_size twice
[18:48:42] <psha> and at least once you'll call method to get data
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[18:49:31] <mhaberler> right, thats nonsense, will collapse into one
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[18:52:04] <mhaberler> this looks 'more correct'
http://tinyurl.com/oot3dhz
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[18:55:42] <mhaberler> jepler: I was supposed to bug you about the rtapi headers
[18:57:28] <mhaberler> and while I am in bugging mode: can I ask you to glimpse over this one:
http://www.mail-archive.com/emc-developers@lists.sourceforge.net/msg09596.html ?
[19:01:46] <andypugh> If I switch the order in which I hal_malloc the space for the pin-arrays then instead of getting a warning about already-allocated memory at pin-creation time, I get a segfault at pin-reading time. This is probably not an improvement.
[19:03:33] <mhaberler> the hint towards 'already initialized' means you likely forgot an indirection
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[19:05:22] <memleak> Hello all! I'm working on RTAI development and have a question in regards to a compiling error in Linuxcnc RTOS.
[19:05:54] <memleak> I am not sure if this is a problem within LinuxCNC source code or RTAI source code, but this is the error I get:
http://pastebin.com/PupzM54x
[19:06:42] <memleak> I'm thinking that maybe LinuxCNC does not compile with GCC 4.7.3 with Binutils 2.23.1 or does this work for other people?
[19:07:03] <mhaberler> this is a linking error, and you are missing a library, likely lxrt
[19:07:16] <memleak> The RTAI tree I am using is here:
https://github.com/ShabbyX/RTAI/tree/experimental
[19:07:26] <memleak> lxrt.so or something?
[19:07:30] <mhaberler> it is a _linking_ error
[19:08:18] <memleak> liblxrt.a liblxrt.la liblxrt.so liblxrt.so.1 liblxrt.so.1.0.0 are all in /usr/realtime/lib
[19:08:20] <mhaberler> no idea where these syms are defined. 'man nm' and dig the candidates
[19:08:57] <memleak> base/include/rtai_shm.h in RTAI tree
[19:09:28] <memleak> Problem is, the exact same file both from the official RTAI upstream tree and my tree are identical.
[19:11:10] <memleak> https://github.com/ShabbyX/RTAI/blob/experimental/base/include/rtai_shm.h lines 67 and 87
[19:13:39] <andypugh> Got it! sizeof(hal_bit_t) is less than sizeof(hal_bit_t*). I wasn't allocating enough memory.
[19:14:38] <andypugh> So, when the next batch of pins came along, they were put in memory already snaffled by the first batch.
[19:17:39] <mhaberler> thats why I meant it would be safer to use hal_data_u instead of the member types of varying size; those always fit
[19:18:13] <andypugh> I have no idea what you mean by hal_data_u
[19:19:06] <mhaberler> the union type here:
http://git.linuxcnc.org/gitweb?p=linuxcnc.git;a=blob;f=src/hal/hal_priv.h;h=1ef1f745c47dab9f2f863b6d9488f29ab08308b3;hb=refs/heads/v2.5_branch#l119
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[19:27:01] <andypugh> Oh! How long has he been there for?
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[19:28:46] <andypugh> That does seem like a lot less bother than casting all these void pointers.
[19:29:10] <andypugh> Or, it would have been, if it wasn't a lot more bother to change it all now. :-/
[19:33:44] <mhaberler> git blame hal_priv.h: d63b35f9 (Jeff Epler 2008-11-06 03:39:53 +0000 119) /** HAL "data union" structure
[19:34:27] <mhaberler> since this is hal_priv.h, not hal.h, this aint for us unwashed coders
[19:35:04] <mhaberler> first time I considered fiddling hal_priv.h I received serious fish slapping ;)
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[19:42:31] <psha> mhaberler: btw i think it's better to remove 'read' and 'shift' methods from RingIter
[19:42:42] <mhaberler> ok
[19:42:48] <psha> but that's for tomorrow
[19:42:48] <psha> bb
[19:43:04] <mhaberler> we call this 'salami tactics' ;)
[19:46:57] <mhaberler> btw the current python wrapping is here:
http://tinyurl.com/q4la63q , carried over your code
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[19:54:16] <mhaberler> Павел говорит: удалите их. Так что я их устранению.
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[23:38:38] <andypugh> Is "runtests" expected to work in Master?
[23:38:46] <andypugh> I seem to have a redis-related problem
[23:43:04] <andypugh> ignore me. I think I was running a different runtests script.
[23:44:30] <andypugh> ls
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