suspect-devices/circuitpython/py/malloc.c, branch 2.xCircuitPython - a Python implementation for teaching coding with microcontrollershttps://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=2.x2017-08-15T01:53:36+00:00py: Add verbose debug compile-time flag MICROPY_DEBUG_VERBOSE.2017-08-15T01:53:36+00:00Stefan Naumannme@stefannaumann.de2017-07-24T16:55:14+00:00urn:sha1:ace9fb54053c29574bdf81ffacc5ddcf9d4b45d9
It enables all the DEBUG_printf outputs in the py/ source code.
all: Use the name MicroPython consistently in comments2017-07-31T08:35:40+00:00Alexander Steffendevel.20.webmeister@spamgourmet.com2017-06-30T07:22:17+00:00urn:sha1:55f33240f3d7051d4213629e92437a36f1fac50e
There were several different spellings of MicroPython present in comments,
when there should be only one.
py/gc: Add MICROPY_GC_CONSERVATIVE_CLEAR option to always zero memory.2016-08-26T05:35:26+00:00Damien Georgedamien.p.george@gmail.com2016-08-26T05:35:26+00:00urn:sha1:5ffe1d8dc07930818bbac6a88bec2aa5bd973402
There can be stray pointers in memory blocks that are not properly zero'd
after allocation. This patch adds a new config option to always zero all
allocated memory (via gc_alloc and gc_realloc) and hence help to eliminate
stray pointers.
See issue #2195.
py/malloc: Provide a proper malloc-based implementation of realloc_ext.2016-02-23T13:53:38+00:00Damien Georgedamien.p.george@gmail.com2016-02-23T13:53:38+00:00urn:sha1:e9d1a94bf099d585d0f8d3b0dddb8e0a397afcffpy: Improve allocation policy of qstr data.2015-07-14T21:56:32+00:00Damien Georgedamien.p.george@gmail.com2015-06-13T20:53:22+00:00urn:sha1:ade9a052365247be5ed4ce8b53c2164a576a4a05
Previous to this patch all interned strings lived in their own malloc'd
chunk. On average this wastes N/2 bytes per interned string, where N is
the number-of-bytes for a quanta of the memory allocator (16 bytes on 32
bit archs).
With this patch interned strings are concatenated into the same malloc'd
chunk when possible. Such chunks are enlarged inplace when possible,
and shrunk to fit when a new chunk is needed.
RAM savings with this patch are highly varied, but should always show an
improvement (unless only 3 or 4 strings are interned). New version
typically uses about 70% of previous memory for the qstr data, and can
lead to savings of around 10% of total memory footprint of a running
script.
Costs about 120 bytes code size on Thumb2 archs (depends on how many
calls to gc_realloc are made).
py: Add MICROPY_MALLOC_USES_ALLOCATED_SIZE to allow simpler malloc API.2015-03-03T21:23:13+00:00Damien Georgedamien.p.george@gmail.com2015-02-27T09:54:12+00:00urn:sha1:d891452a73165966497f1c79b64276faaa664597py: Put all global state together in state structures.2015-01-07T20:33:00+00:00Damien Georgedamien.p.george@gmail.com2015-01-01T23:30:53+00:00urn:sha1:b4b10fd350852e321624d74983cca286091b55a1
This patch consolidates all global variables in py/ core into one place,
in a global structure. Root pointers are all located together to make
GC tracing easier and more efficient.
py: Move to guarded includes, everywhere in py/ core.2015-01-01T20:32:09+00:00Damien Georgedamien.p.george@gmail.com2015-01-01T20:27:54+00:00urn:sha1:51dfcb4bb7613ed164952712d9a5235a7b833cde
Addresses issue #1022.
py: Make gc.enable/disable just control auto-GC; alloc is still allowed.2014-10-31T21:30:46+00:00Damien Georgedamien.p.george@gmail.com2014-10-31T21:30:46+00:00urn:sha1:109c1de015eeee385020233e2f8cc6f921149103
gc.enable/disable are now the same as CPython: they just control whether
automatic garbage collection is enabled or not. If disabled, you can
still allocate heap memory, and initiate a manual collection.
py: Clean up edge cases of malloc/realloc/free.2014-10-23T11:02:00+00:00Damien Georgedamien.p.george@gmail.com2014-10-23T11:02:00+00:00urn:sha1:37378f8a9d2b358fdde0f3451d816b7f506846cc