Reasons to disable:
- the code is relatively robust so doesn't need full checking in the
main executable, and the coverage build is used for full testing
with assertions still enabled;
- reduces code size noticeably, by 27k for x86-64 and 20k for x86;
- allows to more easily track changes in code size, since assertions
can skew things.
Baremetal ports standardized on providing localtime(). localtime() offers
more functionality, in particular, strftime() can be completely implemented
in Python with localtime().
This will lead to crash like:
FATAL: uncaught NLR 80a5420
On x86_32, the minimum heap size is smaller, but not 2 times, so just
use value which works for x86_64.
The with semantics of this function is close to
pkg_resources.resource_stream() function from setuptools, which
is the canonical way to access non-source files belonging to a package
(resources), regardless of what medium the package uses (e.g. individual
source files vs zip archive). In the case of MicroPython, this function
allows to access resources which are frozen into the executable, besides
accessing resources in the file system.
This is initial stage of the implementation, which actually doesn't
implement "package" part of the semantics, just accesses frozen resources
from "root", or filesystem resource - from current dir.
Do not raise SIGPIPE, instead return EPIPE. Otherwise, e.g. writing
to peer-closed socket will lead to sudden termination of MicroPython
process. SIGPIPE is particularly nasty, because unix shell doesn't
print anything for it, so the above looks like completely sudden and
silent termination for unknown reason. Ignoring SIGPIPE is also what
CPython does. Note that this may lead to problems using MicroPython
scripts as pipe filters, but again, that's what CPython does. So,
scripts which want to follow unix shell pipe semantics (where SIGPIPE
means "pipe was requested to terminate, it's not an error"), should
catch EPIPE themselves.
Prior to making this a config option it was previously available on these
(and all other) ports, and it makes sense to keep it enabled for mpy-cross
as well as ports that have a decent amount of space for the code.
This follows the pattern of how all other headers are now included, and
makes it explicit where the header file comes from. This patch also
removes -I options from Makefile's that specify the mp-readline/timeutils/
netutils directories, which are no longer needed.
The -ansi flag is used for C dialect selection and it is equivalent to -std=c90.
Because it goes right before -std=gnu99 it is ignored as for conflicting flags
GCC always uses the last one.
Allows to iterate over the following without allocating on the heap:
- tuple
- list
- string, bytes
- bytearray, array
- dict (not dict.keys, dict.values, dict.items)
- set, frozenset
Allows to call the following without heap memory:
- all, any, min, max, sum
TODO: still need to allocate stack memory in bytecode for iter_buf.
ipoll() allows to poll streams without allocating any memory: this method
returns an iterator (a poll object itself), and the iterator yields
preallocated "callee-owned tuple" with polling results for each active
stream. The only operation a caller is allowed to do with this tuple is
extracting values from it (storing the tuple as a whole somewhere is
not allowed).
This patch implements support for class methods __delattr__ and __setattr__
for customising attribute access. It is controlled by the config option
MICROPY_PY_DELATTR_SETATTR and is disabled by default.
Updated modbuiltin.c to add conditional support for 3-arg calls to
pow() using MICROPY_PY_BUILTINS_POW3 config parameter. Added support in
objint_mpz.c for for optimised implementation.
Damien George
Paul Sokolovsky
Tamas TEVESZ
Ville Skyttä
Pavol Rusnak
Krzysztof Blazewicz
Rami Ali
dmazzella
Nikita Melentev
Nicko van Someren