8000 cached heap buffer for neopixel_write by dhalbert · Pull Request #2648 · adafruit/circuitpython · GitHub
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cached heap buffer for neopixel_write #2648

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Merged
merged 8 commits into from
Feb 22, 2020
Merged

cached heap buffer for neopixel_write #2648

merged 8 commits into from
Feb 22, 2020

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dhalbert
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@dhalbert dhalbert commented Feb 21, 2020 •
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This is a continuation of @rhooper's #2449, with the same basic idea: allocate a heap buffer for neopixel_write when necessary, and save it for reuse. The last commit to #2449 was crashing; these further changes leave freeing the buffer to the garbage collector, and put the buffer into the root pointers.

I ran @rhooper's Christmas tree code overnight with this on a shortened NeoPixel strip. It is still running 10 hours later.

@rhooper feel free to review too; I just can't add you as an official reviewer.

There is something wrong with #2449 for me: I can only see the PR if I am not logged in to GitHub. If I try to view it when logged in, I get a 500 Server Error. I've reported this to GitHub. Could someone else close that PR? Thanks.

@dhalbert dhalbert requested review from tannewt and kattni February 21, 2020 13:57
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tannewt commented Feb 21, 2020

#2449 crashes for me too.

tannewt
tannewt reviewed Feb 21, 2020
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One questions about realloc. Otherwise good!

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I pushed the realloc changes, and @rhooper and I are testing. @tannewt I'll request a re-review after some extended testing runs.

@dhalbert dhalbert requested a review from tannewt February 22, 2020 00:27
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Has run for over an hour, so it's looking solid.

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tannewt approved these changes Feb 22, 2020
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Great! Thank you!

@tannewt tannewt merged commit bd9572c into adafruit:master Feb 22, 2020
@dhalbert dhalbert mentioned this pull request Feb 22, 2020
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@dhalbert dhalbert deleted the malloc-nrf-neopixel-write branch February 29, 2020 02:25
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@tannewt tannewt tannewt approved these changes

@kattni kattni Awaiting requested review from kattni

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@dhalbert @tannewt @rhooper
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