1148
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Ran 29 Dec 2017 08:00AM UTC

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Files 227

Run time 9s

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Build # 1148

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travis-ci

Committed by

pfalcon

Commit Message

py/objstr: Add MICROPY_PREFER_QSTRS option.

Check whether an interned string (qstr) is already available when allocating
strings in most cases. This *can* save heap, but *makes* string allocation
noticeably slower.

This addresses deficiencies introduced in 8d956c26d15, 1f1d5194d775. More
details are at
https://github.com/micropython/micropython/issues/3376#issuecomment-346254960 :

> One idea I had was to simply iterate over all qstrs and use
> mp_load_method_maybe() to check if that qstr is available in the object.
> ...
> But it is noticeable on slow MCUs: the microbit runs at 16MHz and using the
> qstr iteration makes pressing "tab" at a bare prompt quite slow, around
> 150-200ms slow.

I.e. it's considered not normal to have latency 150-200ms for interactive
use, but normal to have delay of that order when creating any string
programmatically.

Coverage Stats

17511 of 17812 relevant lines covered (98.31%)

311900.27 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1	1148.1	29 Dec 2017 08:00AM UTC	0	98.31	Travis Job 1148.1

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