CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=v1.4.5 2015-07-14T21:56:32+00:00 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). 2015-07-02T09:53:08+00:00 Daniel Campora daniel@wipy.io 2015-06-29T20:45:39+00:00 urn:sha1:077812b2abe3f5e5325194f9694dad7eb38186dd The TimeoutError is useful for some modules, specially the the socket module. TimeoutError can then be alised to socket.timeout and then Python code can differentiate between socket.error and socket.timeout. 2015-04-20T13:29:31+00:00 Damien George damien.p.george@gmail.com 2015-04-20T13:29:31+00:00 urn:sha1:c8b60f013b9d624a74ad502460f2bc7d00c39644 This fixes a long standing problem that viper code generation gave terrible error messages, and actually no errors on pyboard where assertions are disabled. Now all compile-time errors are raised as proper Python exceptions, and are of type ViperTypeError. Addresses issue #940. 2015-04-16T14:30:16+00:00 Damien George damien.p.george@gmail.com 2015-04-11T12:03:37+00:00 urn:sha1:044c473de203b4dbe93874813b430fb6336db2b2 2015-04-16T14:30:16+00:00 Damien George damien.p.george@gmail.com 2015-04-09T22:56:15+00:00 urn:sha1:7f9d1d6ab923096582622b700bedb6a571518eac Previous to this patch the printing mechanism was a bit of a tangled mess. This patch attempts to consolidate printing into one interface. All (non-debug) printing now uses the mp_print* family of functions, mainly mp_printf. All these functions take an mp_print_t structure as their first argument, and this structure defines the printing backend through the "print_strn" function of said structure. Printing from the uPy core can reach the platform-defined print code via two paths: either through mp_sys_stdout_obj (defined pert port) in conjunction with mp_stream_write; or through the mp_plat_print structure which uses the MP_PLAT_PRINT_STRN macro to define how string are printed on the platform. The former is only used when MICROPY_PY_IO is defined. With this new scheme printing is generally more efficient (less layers to go through, less arguments to pass), and, given an mp_print_t* structure, one can call mp_print_str for efficiency instead of mp_printf("%s", ...). Code size is also reduced by around 200 bytes on Thumb2 archs. 2015-04-11T15:54:37+00:00 Damien George damien.p.george@gmail.com 2015-04-01T14:10:50+00:00 urn:sha1:b1bbe966c408901ae64ea8c8b468694c47d05b1a This simplifies the API for objects and reduces code size (by around 400 bytes on Thumb2, and around 2k on x86). Performance impact was measured with Pystone score, but change was barely noticeable. 2015-02-27T09:34:51+00:00 Damien George damien.p.george@gmail.com 2015-02-27T09:34:51+00:00 urn:sha1:4d77e1a0344aa22964b4db5a71181183431e9a53 This is so all memory requests go through the same interface. 2015-02-27T00:36:39+00:00 Damien George damien.p.george@gmail.com 2015-02-27T00:36:39+00:00 urn:sha1:4852e09c7914a4d4f2938dddbe155a2075bb2eb3 This makes exception traceback info self contained (ie doesn't rely on list object, which was a bit of a hack), reduces code size, and reduces RAM footprint of exception by eliminating the list object. Addresses part of issue #1126. 2015-02-23T21:20:16+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2015-02-23T21:18:36+00:00 urn:sha1:71ebd4b7f0b88fc0ceb36d8c2464a5114470f5a0 Still too shy to implement UnicodeEncodeError which was really needed for micropython-lib case. 2015-02-15T19:41:14+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2015-02-15T19:24:03+00:00 urn:sha1:fa3b8951452ca13a807c0b6a090e0385507113db Traceback allocation for exception will now never lead to recursive MemoryError exception - if there's no memory for traceback, it simply won't be created.