CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=4.0.0-beta.7 2019-04-09T18:36:10+00:00 2019-04-09T18:36:10+00:00 Scott Shawcroft scott@tannewt.org 2019-04-09T18:36:10+00:00 urn:sha1:72992070c5137ce44969555828673ba7ccd69f08 2019-01-15T01:29:19+00:00 Scott Shawcroft scott@tannewt.org 2019-01-14T23:14:40+00:00 urn:sha1:72d993d60c5e5238942491df00776ca31f9758a1 2018-12-27T05:04:04+00:00 Dan Halbert halbert@halwitz.org 2018-12-27T05:04:04+00:00 urn:sha1:4167bf5b241eec4e5a04c36d7f7c66d43a8bb921 2018-11-21T04:04:58+00:00 Dan Halbert halbert@halwitz.org 2018-11-21T04:04:58+00:00 urn:sha1:1763ffe2450fa07c74db225cc5ef3a6e2feb669b 2018-08-17T00:40:57+00:00 Scott Shawcroft scott@tannewt.org 2018-08-16T01:32:37+00:00 urn:sha1:de5a9d72dcdaacdd5048195cd5bab007f4b2baef This saves code space in builds which use link-time optimization. The optimization drops the untranslated strings and replaces them with a compressed_string_t struct. It can then be decompressed to a c string. Builds without LTO work as well but include both untranslated strings and compressed strings. This work could be expanded to include QSTRs and loaded strings if a compress method is added to C. Its tracked in #531. 2018-07-14T02:51:10+00:00 Dan Halbert halbert@halwitz.org 2018-07-14T02:51:10+00:00 urn:sha1:e2e01efa84d2ed46d004edf48076e4701accc176 2018-07-11T20:45:30+00:00 Dan Halbert halbert@halwitz.org 2018-07-11T20:45:30+00:00 urn:sha1:7c219600a246d8956d0b23ea3f5d125a820e6b6a 2018-05-10T13:00:04+00:00 Damien George damien.p.george@gmail.com 2018-05-10T13:00:04+00:00 urn:sha1:bc87b862fd22afb38ed7392b69474286fa5fe19f This new helper function acts like mp_load_method_maybe but is wrapped in an NLR handler so it can catch exceptions. It prevents AttributeError from propagating out, and optionally all other exceptions. This helper can be used to fully implement hasattr (see follow-up commit), and also for cases where mp_load_method_maybe is used but it must now raise an exception. 2017-12-11T02:49:09+00:00 Damien George damien.p.george@gmail.com 2017-11-26T12:28:40+00:00 urn:sha1:02d830c035aca166d70551e485ccd2d1658189c9 This patch introduces the MICROPY_ENABLE_PYSTACK option (disabled by default) which enables a "Python stack" that allows to allocate and free memory in a scoped, or Last-In-First-Out (LIFO) way, similar to alloca(). A new memory allocation API is introduced along with this Py-stack. It includes both "local" and "nonlocal" LIFO allocation. Local allocation is intended to be equivalent to using alloca(), whereby the same function must free the memory. Nonlocal allocation is where another function may free the memory, so long as it's still LIFO. Follow-up patches will convert all uses of alloca() and VLA to the new scoped allocation API. The old behaviour (using alloca()) will still be available, but when MICROPY_ENABLE_PYSTACK is enabled then alloca() is no longer required or used. The benefits of enabling this option are (or will be once subsequent patches are made to convert alloca()/VLA): - Toolchains without alloca() can use this feature to obtain correct and efficient scoped memory allocation (compared to using the heap instead of alloca(), which is slower). - Even if alloca() is available, enabling the Py-stack gives slightly more efficient use of stack space when calling nested Python functions, due to the way that compilers implement alloca(). - Enabling the Py-stack with the stackless mode allows for even more efficient stack usage, as well as retaining high performance (because the heap is no longer used to build and destroy stackless code states). - With Py-stack and stackless enabled, Python-calling-Python is no longer recursive in the C mp_execute_bytecode function. The micropython.pystack_use() function is included to measure usage of the Python stack. 2017-12-11T02:49:09+00:00 Damien George damien.p.george@gmail.com 2017-11-20T06:29:58+00:00 urn:sha1:5b8998da6dfed6c8f54b8b34228f25d93dbb9d29 For consistency this helper function is renamed to match the other exception helpers, and moved to their location in runtime.c.