suspect-devices/circuitpython/py/mpstate.h, branch v1.4.5CircuitPython - a Python implementation for teaching coding with microcontrollershttps://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.4.52015-07-14T21:56:32+00:00py: 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).
modsys: Add basic sys.exc_info() implementation.2015-04-25T00:49:23+00:00Paul Sokolovskypfalcon@users.sourceforge.net2015-04-25T00:17:41+00:00urn:sha1:8b85d14b92a65e92862861038c0fe96e6c616c3e
The implementation is very basic and non-compliant and provided solely for
CPython compatibility. The function itself is bad Python2 heritage, its
usage is discouraged.
py: Put mp_sys_path, mp_sys_argv and gc_collected in mp_state_ctx_t.2015-02-07T17:24:10+00:00Damien Georgedamien.p.george@gmail.com2015-02-07T17:24:10+00:00urn:sha1:e1e359ff59d6bbf09441cc1f3965be63f1046182
Without mp_sys_path and mp_sys_argv in the root pointer section of the
state, their memory was being incorrectly collected by GC.
stmhal: Put mod_network_nic_list in global root-pointer state.2015-01-22T00:16:41+00:00Damien Georgedamien.p.george@gmail.com2015-01-22T00:16:41+00:00urn:sha1:8b77e3dd2fd3005bc67bb59a701c6ea2422bf928
It needs to be scanned by GC. Thanks to Daniel Campora.
py: 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.