suspect-devices/circuitpython/py/malloc.c, branch cross CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=cross 2016-02-23T13:53:38+00:00 py/malloc: Provide a proper malloc-based implementation of realloc_ext. 2016-02-23T13:53:38+00:00 Damien George damien.p.george@gmail.com 2016-02-23T13:53:38+00:00 urn:sha1:e9d1a94bf099d585d0f8d3b0dddb8e0a397afcff py: Improve allocation policy of qstr data. 2015-07-14T21:56:32+00:00 Damien George damien.p.george@gmail.com 2015-06-13T20:53:22+00:00 urn: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+00:00 Damien George damien.p.george@gmail.com 2015-02-27T09:54:12+00:00 urn:sha1:d891452a73165966497f1c79b64276faaa664597 py: Put all global state together in state structures. 2015-01-07T20:33:00+00:00 Damien George damien.p.george@gmail.com 2015-01-01T23:30:53+00:00 urn: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+00:00 Damien George damien.p.george@gmail.com 2015-01-01T20:27:54+00:00 urn:sha1:51dfcb4bb7613ed164952712d9a5235a7b833cde Addresses issue #1022. py: Make gc.enable/disable just control auto-GC; alloc is still allowed. 2014-10-31T21:30:46+00:00 Damien George damien.p.george@gmail.com 2014-10-31T21:30:46+00:00 urn: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+00:00 Damien George damien.p.george@gmail.com 2014-10-23T11:02:00+00:00 urn:sha1:37378f8a9d2b358fdde0f3451d816b7f506846cc py: For malloc and vstr functions, use size_t exclusively for int type. 2014-09-25T14:49:26+00:00 Damien George damien.p.george@gmail.com 2014-09-23T17:10:17+00:00 urn:sha1:b0261341d3706329ea58d8fc1a5ff9c788c9ccf7 It seems most sensible to use size_t for measuring "number of bytes" in malloc and vstr functions (since that's what size_t is for). We don't use mp_uint_t because malloc and vstr are not Micro Python specific. py: Include mpconfig.h before all other includes. 2014-06-21T19:43:22+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2014-06-21T19:43:22+00:00 urn:sha1:59c675a64c1d9757d50ad4627da67a6f996a99fb It defines types used by all other headers. Fixes #691. Add license header to (almost) all files. 2014-05-03T22:27:38+00:00 Damien George damien.p.george@gmail.com 2014-05-03T22:27:38+00:00 urn:sha1:04b9147e150d2d6fa3750f312fe328b6a71c1b28 Blanket wide to all .c and .h files. Some files originating from ST are difficult to deal with (license wise) so it was left out of those. Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.