Hi,
I've been having fun this week trying to get twisted's unit tests running on
top of pypy. This has the dual goals of getting twisted to run on a funky
platform like pypy, and being able to give pypy a bit of a run around the yard.
I have to report this is going "better than expected". I've already used
rhymes's fcntl implementation and had to extend the posix module, I intend to
do a diff once I get everything sorted.
I have a problem with rpython translation of my implementation of posix.pipe().
I have other ctypes implementations of functions (such as posix.access()) which
work okay, but I'm having trouble with this particular case.
man 2 pipe says that I use it like this:
int pipe(int filedes[2]);
My implementation looks like:
fd_arr = c_int * 2
def pipe(space):
fds = fd_arr()
fds[0] = 0
fds[1] = 0
if libc.pipe(fds):
raise makeOSError(space)
return space.wrap((fds[0], fds[1]))
pipe.unwrap_spec = [ObjSpace]
And the error I get from time {{{python translate.py --text --batch standalone
--thread}}} is:
[translation:ERROR] Exception': unexpected prebuilt constant: <slot wrapper
'__init__' of '_ctypes.Array' objects>
[translation:ERROR] .. v0 = simple_call((ArrayType c_long_Array_2))
[translation:ERROR] Processing block:
[translation:ERROR] [EMAIL PROTECTED] is a <class
'pypy.objspace.flow.flowcontext.SpamBlock'>
[translation:ERROR] in (pypy.module.posix.ctypes_posix:43)pipe
[translation:ERROR] containing the following operations:
[translation:ERROR] v0 = simple_call((ArrayType c_long_Array_2))
[translation:ERROR] v1 = setitem(v0, (0), (0))
[translation:ERROR] v2 = setitem(v0, (1), (0))
[translation:ERROR] v3 = getattr((<CDLL '/usr/lib/libc...20a89f0>),
('pipe'))
[translation:ERROR] v4 = simple_call(v3, v0)
[translation:ERROR] v5 = is_true(v4)
[translation:ERROR] --end--
I've tried a bunch of ways of initialising the 'fds' object as to not make it a
'prebuilt constant', fds = fd_arr(0,0), creating fd_arr dynamically,
fd_arr(zero, zero), etc. And I simply cannot seem to get rid of this exception.
So, any ideas as to how I go about making this work?
Stephen.
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