On Fri, Jun 06, 2008 at 22:28:01 +0200
Fons Adriaensen <fons@email-addr-hidden> wrote:
> On Fri, Jun 06, 2008 at 08:47:27PM +0200, rdxesy@email-addr-hidden wrote:
>
> > I guess this makes things clearer :)
>
> What is this midi_spinbutton() ??
> Is there anything in the midi_callback() that can
> block it ? A mutex or so reset after the parameter
> request loops ?
it just sets a gtk spinbutton to a value. nothing else. no
mutexes or anything that blocks.
> There must be at least 10s of idle time in the
> second loop (with the usleep()). So if the
> midi receiver thread doesn't wake up during
> this time then
>
> - It could be blocked on something else and not
> be waiting in poll(). The trace message you
> added later should reveal this.
what follows is a trace of the request loop *without*
usleep but with the poll message:
midi get_channel_setup_settings()
midi param_request()
midi nibble(512, 1)
midi sysex_delivery()
midi param_request()
midi nibble(513, 1)
... (no poll until the last request, no wonder as there is
no more usleep)
midi param_request()
midi nibble(639, 1)
midi sysex_delivery()
poll
midi midi_callback() ENTERING
midi unibble(0, 4)
midi unibble(0, 0)
midi midi_callback() got param: 512, value: 0
midi set_spinbutton()
poll
midi midi_callback() ENTERING
midi unibble(1, 4)
midi unibble(1, 0)
midi midi_callback() got param: 513, value: 1
midi set_spinbutton()
midi unibble(2, 4)
midi unibble(2, 0)
midi midi_callback() got param: 514, value: 2
midi set_spinbutton()
midi unibble(3, 4)
midi unibble(3, 0)
midi midi_callback() got param: 515, value: 3
midi set_spinbutton()
midi unibble(4, 4)
midi unibble(4, 0)
midi midi_callback() got param: 516, value: 4
midi set_spinbutton()
midi unibble(5, 4)
midi unibble(5, 0)
midi midi_callback() got param: 517, value: 5
midi set_spinbutton()
midi unibble(6, 4)
midi unibble(6, 0)
midi midi_callback() got param: 518, value: 6
midi set_spinbutton()
midi unibble(7, 4)
midi unibble(7, 0)
midi midi_callback() got param: 519, value: 7
midi set_spinbutton()
midi unibble(8, 4)
midi unibble(8, 0)
midi midi_callback() got param: 520, value: 8
midi set_spinbutton()
midi unibble(9, 4)
midi unibble(9, 0)
midi midi_callback() got param: 521, value: 9
midi set_spinbutton()
midi unibble(10, 4)
midi unibble(10, 0)
midi midi_callback() got param: 522, value: 10
midi set_spinbutton()
midi unibble(11, 4)
midi unibble(11, 0)
midi midi_callback() got param: 523, value: 11
midi set_spinbutton()
midi unibble(12, 4)
midi unibble(12, 0)
midi midi_callback() got param: 524, value: 12
midi set_spinbutton()
midi unibble(13, 4)
midi unibble(13, 0)
midi midi_callback() got param: 525, value: 13
midi set_spinbutton()
midi unibble(14, 4)
midi unibble(14, 0)
midi midi_callback() got param: 526, value: 14
midi set_spinbutton()
midi unibble(15, 4)
midi unibble(15, 0)
midi midi_callback() got param: 527, value: 15
midi set_spinbutton()
midi unibble(16, 4)
midi unibble(16, 0)
midi midi_callback() got param: 528, value: 16
midi set_spinbutton()
midi unibble(17, 4)
midi unibble(17, 0)
midi midi_callback() got param: 529, value: 17
midi set_spinbutton()
midi unibble(18, 4)
midi unibble(18, 0)
midi midi_callback() got param: 530, value: 18
midi set_spinbutton()
midi unibble(19, 4)
midi unibble(19, 0)
midi midi_callback() got param: 531, value: 19
midi set_spinbutton()
midi unibble(20, 4)
midi unibble(20, 0)
midi midi_callback() got param: 532, value: 20
midi set_spinbutton()
midi unibble(21, 4)
midi unibble(21, 0)
midi midi_callback() got param: 533, value: 21
midi set_spinbutton()
midi unibble(22, 4)
midi unibble(22, 0)
midi midi_callback() got param: 534, value: 22
midi set_spinbutton()
midi unibble(23, 4)
midi unibble(23, 0)
midi midi_callback() got param: 535, value: 23
midi set_spinbutton()
midi unibble(24, 4)
midi unibble(24, 0)
midi midi_callback() got param: 536, value: 24
midi set_spinbutton()
midi unibble(25, 4)
midi unibble(25, 0)
midi midi_callback() got param: 537, value: 25
midi set_spinbutton()
midi unibble(26, 4)
midi unibble(26, 0)
midi midi_callback() got param: 538, value: 26
midi set_spinbutton()
midi unibble(27, 4)
midi unibble(27, 0)
midi midi_callback() got param: 539, value: 27
midi set_spinbutton()
midi unibble(28, 4)
midi unibble(28, 0)
midi midi_callback() got param: 540, value: 28
midi set_spinbutton()
midi unibble(29, 4)
midi unibble(29, 0)
midi midi_callback() got param: 541, value: 29
midi set_spinbutton()
midi unibble(30, 4)
midi unibble(30, 0)
midi midi_callback() got param: 542, value: 30
midi set_spinbutton()
midi unibble(31, 4)
midi unibble(31, 0)
midi midi_callback() got param: 543, value: 31
midi set_spinbutton()
midi unibble(32, 4)
midi unibble(32, 0)
midi midi_callback() got param: 544, value: 32
midi set_spinbutton()
poll
midi midi_callback() ENTERING
midi unibble(33, 4)
midi unibble(33, 0)
midi midi_callback() got param: 545, value: 33
midi set_spinbutton()
midi unibble(34, 4)
midi unibble(34, 0)
midi midi_callback() got param: 546, value: 34
midi set_spinbutton()
poll
midi midi_callback() ENTERING
midi unibble(35, 4)
midi unibble(35, 0)
midi midi_callback() got param: 547, value: 35
midi set_spinbutton()
poll
midi midi_callback() ENTERING
midi unibble(36, 4)
midi unibble(36, 0)
midi midi_callback() got param: 548, value: 36
midi set_spinbutton()
poll
midi midi_callback() ENTERING
midi unibble(37, 4)
midi unibble(37, 0)
midi midi_callback() got param: 549, value: 37
midi set_spinbutton()
poll
midi midi_callback() ENTERING
midi unibble(38, 4)
midi unibble(38, 0)
midi midi_callback() got param: 550, value: 38
midi set_spinbutton()
poll
midi midi_callback() ENTERING
midi unibble(39, 4)
midi unibble(39, 0)
midi midi_callback() got param: 551, value: 39
midi set_spinbutton()
poll
midi midi_callback() ENTERING
midi unibble(40, 4)
midi unibble(40, 0)
midi midi_callback() got param: 552, value: 40
midi set_spinbutton()
poll
midi midi_callback() ENTERING
midi unibble(41, 4)
midi unibble(41, 0)
midi midi_callback() got param: 553, value: 41
midi set_spinbutton()
midi unibble(42, 4)
midi unibble(42, 0)
midi midi_callback() got param: 554, value: 42
midi set_spinbutton()
midi unibble(43, 4)
midi unibble(43, 0)
midi midi_callback() got param: 555, value: 43
midi set_spinbutton()
midi unibble(44, 4)
midi unibble(44, 0)
midi midi_callback() got param: 556, value: 44
midi set_spinbutton()
midi unibble(45, 4)
midi unibble(45, 0)
midi midi_callback() got param: 557, value: 45
midi set_spinbutton()
midi unibble(46, 4)
midi unibble(46, 0)
midi midi_callback() got param: 558, value: 46
midi set_spinbutton()
midi unibble(47, 4)
midi unibble(47, 0)
midi midi_callback() got param: 559, value: 47
midi set_spinbutton()
######################################################
... more more more. at one point weirdness begins again:
######################################################
midi unibble(74, 4)
midi unibble(74, 0)
midi midi_callback() got param: 586, value: 74
midi set_spinbutton()
midi unibble(75, 4)
midi unibble(75, 0)
midi midi_callback() got param: 587, value: 75
midi set_spinbutton()
midi unibble(78, 4)
midi unibble(78, 0)
midi midi_callback() got param: 590, value: 78
midi set_spinbutton()
midi unibble(83, 4)
midi unibble(83, 0)
midi midi_callback() got param: 595, value: 83
midi set_spinbutton()
midi unibble(88, 4)
midi unibble(88, 0)
midi midi_callback() got param: 600, value: 88
midi set_spinbutton()
midi unibble(93, 4)
midi unibble(93, 0)
midi midi_callback() got param: 605, value: 93
midi set_spinbutton()
midi unibble(98, 4)
midi unibble(98, 0)
midi midi_callback() got param: 610, value: 98
midi set_spinbutton()
midi unibble(102, 4)
midi unibble(102, 0)
midi midi_callback() got param: 614, value: 102
midi set_spinbutton()
midi unibble(104, 4)
midi unibble(104, 0)
midi midi_callback() got param: 616, value: 104
midi set_spinbutton()
midi unibble(107, 4)
midi unibble(107, 0)
midi midi_callback() got param: 619, value: 107
midi set_spinbutton()
midi unibble(112, 4)
midi unibble(112, 0)
midi midi_callback() got param: 624, value: 112
midi set_spinbutton()
midi unibble(117, 4)
midi unibble(117, 0)
midi midi_callback() got param: 629, value: 117
midi set_spinbutton()
midi unibble(122, 4)
midi unibble(122, 0)
midi midi_callback() got param: 634, value: 122
midi set_spinbutton()
midi unibble(127, 4)
midi unibble(127, 0)
midi midi_callback() got param: 639, value: 127
midi set_spinbutton()
note that this just asks for params 512-639 (the first loop
of the previous posting is commented)
so, after receiving param 590 i receive only every fifth or
fourth param, the rest is gone void.
this is repeatable, everytime. i receive every single param
correctly until and including param 590, then i receive
params with jumps in between, 4 or five params big.
when i add back usleep(10000); to the request loop, i get
all params in correct order but only up and including to
param 612. repeatable, always.
i always request 128 parameters. with usleep enabled in the
request-loop i get exactly 101 answers, always. without the
sleep, the received params vary from 88 to 90.
also (even with usleep enabled requests) there is no
polling except the one in the beginning, because
midi_callback blocks here:
if (param == VOLUME || param == PAN)
{
-> gdk_threads_enter ();
set_slider(param, value);
gdk_threads_leave ();
}
that is why there is no more polling after the first. so,
the problem is that alsa receives receives receives, and no
event gets out of the queue. it overflows.
> - There is no data to receive. This would indicate
> some cramp in the device you're talking with that
> somehow freezes while being flooded with parameter
> requests.
this is not the case, for sure.
> - There is a bug in the alsa code handling this.
i doubt it, i just think that the receive buffer is too
small.
> The really strange thing is that you *do* receive
> all the replies for those requests that were sent
> without a pause in between. It's the replies to
> some of the slower ones that are missing. This
> would suggest that, whatever goes wrong, the
> damage is already done before you start the second
> slower loop. You could try to decrease the
> number of iterations in the first one and see
> what happens, and if the results are repeatable.
the loop was commented.
> Another thing you should do is verify if you
> really need a separate request for each value.
> The last two SYSEX protocols I used both allowed
> to combine a number of requests in a single
> message, also combining the replies in that
> case. It would make sense for any device having
> so many parameters to support this.
hmm, well, let me check...oops! BINGO. there is a program
map request command! lol :-)
well, we could just stop talking right now, should we?
heh...no, please not!
there are other areas where i have to receive more than
alsa handles and loose params.
probably, if there is such an option, i should just resize
the input queue?
Jan
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Received on Sat Jun 7 04:15:02 2008
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