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Fix cyclic mode to IIOD v0.x #1099

Merged
merged 4 commits into from
Dec 15, 2023
Merged

Fix cyclic mode to IIOD v0.x #1099

merged 4 commits into from
Dec 15, 2023

Commits on Dec 14, 2023

  1. utils/iio-common: Use CLOCK_MONOTONIC clock for timeouts 

    The CLOCK_REALTIME clock may jump in time, which can be a huge problem
when computing timeouts. Use the CLOCK_MONOTONIC one instead, which does
not have this problem.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
    @pcercuei
    pcercuei committed Dec 14, 2023
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  2. iiod: Fix segmentation fault when buffer creation failed 

    When the buffer creation failed, entry->buf was left to whatever error
pointer it had previously, instead of being reset to NULL; cleanup code
would subsequently try to destroy the buffer once again with an invalid
pointer.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
    @pcercuei
    pcercuei committed Dec 14, 2023
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  3. Add "cyclic" parameter to .buffer_enable() backend callback 

    IIOD v0.x supports enqueueing cyclic blocks, but it needs to know about
it when the iio_buffer is opened through the "OPEN" command. As
iiod-client calls this command when the buffer is to be enabled, pass an
extra "cyclic" parameter to .buffer_enable(), always set to "false" for
now.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
    @pcercuei
    pcercuei committed Dec 14, 2023
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  4. Rework cyclic block enqueue when talking to v0.x IIOD 

    Instead of continuously sending the same block again and again, set the
"cyclic" parameter of the .enable_buffer() backend callback to the value
of the "cyclic" parameter of the last call to iio_buffer_enqueue().

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
    @pcercuei
    pcercuei committed Dec 14, 2023
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