Commit Graph

22 Commits

Author SHA1 Message Date
Paul Sokolovsky fe866d996f unix/moduselect: Properly implement ipoll object iteration.
TODO: There's another issue to care about: poll set being modified during
iteration.
2017-03-05 13:51:22 +01:00
Damien George ae8d867586 py: Add iter_buf to getiter type method.
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.
2017-02-16 18:38:06 +11:00
Paul Sokolovsky 16a3534ad4 unix/moduselect: Implement ipoll() method with no-allocation policy.
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).
2017-02-13 00:23:23 +03:00
Paul Sokolovsky 5efd6508ec unix/moduselect: Fix nanbox build with recent changes. 2016-12-31 11:19:25 +03:00
Paul Sokolovsky 093a8f5fa2 unix/moduselect: If file object passed to .register(), return it in .poll().
This makes unix "uselect" compatible with baremetal "uselect". Previosuly,
unix version accepted file/socket objects, but internally converted that
to file descriptors, and that's what .poll() returned. To acheive new
behavior, file-like objects are stored internally in an array, in addition
to existing array of struct pollfd. This array is created only on first
case of file-like object being passed to .register(). If only raw fd's are
passed, there will be no additional memory used comparing to the original
implementation.
2016-12-31 00:07:18 +03:00
Paul Sokolovsky 87dfc76570 unix: Rename define for unix moduselect to MICROPY_PY_USELECT_POSIX.
To not conflict with recently made available globally baremetal
moduselect.
2016-11-21 00:48:55 +03:00
Damien George 503089ea9d unix: Use mp_raise_OSError helper function. 2016-10-07 14:05:15 +11:00
Damien George 93c4a6a3f7 all: Remove 'name' member from mp_obj_module_t struct.
One can instead lookup __name__ in the modules dict to get the value.
2016-09-22 00:23:16 +10:00
Renato Aguiar 081c0648ec unix: Fix build for when MICROPY_PY_SOCKET=0. 2016-09-12 16:43:56 +10:00
Paul Sokolovsky a4aaf82421 unix/moduselect: Allow poll.register(), etc. accept fd-like objects.
This includes file and socket objects, backed by Unix file descriptor.
This improves compatibility with stmhal's uselect (and convenience of
use), though not completely: return value from poll.poll() is still
raw file descriptor.
2016-08-07 01:25:59 +03:00
Damien George 4b72b3a133 py: Change type signature of builtin funs that take variable or kw args.
With this patch the n_args parameter is changed type from mp_uint_t to
size_t.
2016-01-11 00:49:27 +00:00
Damien George 1b0aab621b py: Change struct and macro for builtin fun so they can be type checked. 2016-01-03 11:53:44 +00:00
Paul Sokolovsky 2d11b17419 unix/moduselect: Make configurable with MICROPY_PY_USELECT. 2015-12-13 08:47:42 +02:00
Paul Sokolovsky c1481bb0ab unix/moduselect: Implement "one-shot" flag for poll.poll().
After an I/O event is triggered for fd, event flags are automatically reset,
so no further events are reported until new event flags are set. This is
an optimization for uasyncio, required to account for coroutine semantics:
each coroutine issues explicit read/write async call, and once that trigger,
no events should be reported to coroutine, unless it again explicitly
requests it. One-shot mode saves one linear scan over the poll array.
2015-12-11 23:36:37 +02:00
Paul Sokolovsky 082b12128d unix/moduselect: register(): Allow to call with duplicate file descriptor.
Per CPython docs, "Registering a file descriptor that’s already registered
is not an error, and has the same effect as registering the descriptor
exactly once."
https://docs.python.org/3/library/select.html#select.poll.register

That's somewhat ambiguous, what's implemented here is that if fd si not
yet registered, it is registered. Otherwise, the effect is equivalent to
modify() method.
2015-12-05 15:16:49 +02:00
Paul Sokolovsky bd33aa313e unix/moduselect: Support growing of poll array. 2015-11-30 00:54:14 +02:00
Damien George 999cedb90f py: Wrap all obj-ptr conversions in MP_OBJ_TO_PTR/MP_OBJ_FROM_PTR.
This allows the mp_obj_t type to be configured to something other than a
pointer-sized primitive type.

This patch also includes additional changes to allow the code to compile
when sizeof(mp_uint_t) != sizeof(void*), such as using size_t instead of
mp_uint_t, and various casts.
2015-11-29 14:25:35 +00:00
Damien George cbf7674025 py: Add MP_ROM_* macros and mp_rom_* types and use them. 2015-11-29 14:25:04 +00:00
Paul Sokolovsky 698a6a9d7d unix/moduselect: poll.register(): Reuse freed entries in poll array. 2015-11-29 00:06:51 +02:00
Paul Sokolovsky 19920e25f9 unix/moduselect: Fix bug in poll.poll() scanning loop. 2015-11-28 17:34:46 +02:00
Damien George 54df549b5f unix/moduselect: Initialise variable so can compile in non-debug mode. 2015-11-20 12:51:00 +00:00
Paul Sokolovsky 65971f5160 unix: Add "uselect" module, with poll() function.
Underlyingly, uses standard POSIX poll() for portability.
2015-11-17 00:35:57 +02:00