1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
# coding: utf-8
"""The main CFFI wrapping of libzmq"""
# Copyright (C) PyZMQ Developers
# Distributed under the terms of the Modified BSD License.
import json
import os
from os.path import dirname, join
from cffi import FFI
from zmq.utils.constant_names import all_names, no_prefix
base_zmq_version = (3,2,2)
def load_compiler_config():
"""load pyzmq compiler arguments"""
import zmq
zmq_dir = dirname(zmq.__file__)
zmq_parent = dirname(zmq_dir)
fname = join(zmq_dir, 'utils', 'compiler.json')
if os.path.exists(fname):
with open(fname) as f:
cfg = json.load(f)
else:
cfg = {}
cfg.setdefault("include_dirs", [])
cfg.setdefault("library_dirs", [])
cfg.setdefault("runtime_library_dirs", [])
cfg.setdefault("libraries", ["zmq"])
# cast to str, because cffi can't handle unicode paths (?!)
cfg['libraries'] = [str(lib) for lib in cfg['libraries']]
for key in ("include_dirs", "library_dirs", "runtime_library_dirs"):
# interpret paths relative to parent of zmq (like source tree)
abs_paths = []
for p in cfg[key]:
if p.startswith('zmq'):
p = join(zmq_parent, p)
abs_paths.append(str(p))
cfg[key] = abs_paths
return cfg
def zmq_version_info():
"""Get libzmq version as tuple of ints"""
major = ffi.new('int*')
minor = ffi.new('int*')
patch = ffi.new('int*')
C.zmq_version(major, minor, patch)
return (int(major[0]), int(minor[0]), int(patch[0]))
cfg = load_compiler_config()
ffi = FFI()
def _make_defines(names):
_names = []
for name in names:
define_line = "#define %s ..." % (name)
_names.append(define_line)
return "\n".join(_names)
c_constant_names = []
for name in all_names:
if no_prefix(name):
c_constant_names.append(name)
else:
c_constant_names.append("ZMQ_" + name)
# load ffi definitions
here = os.path.dirname(__file__)
with open(os.path.join(here, '_cdefs.h')) as f:
_cdefs = f.read()
with open(os.path.join(here, '_verify.c')) as f:
_verify = f.read()
ffi.cdef(_cdefs)
ffi.cdef(_make_defines(c_constant_names))
try:
C = ffi.verify(_verify,
modulename='_cffi_ext',
libraries=cfg['libraries'],
include_dirs=cfg['include_dirs'],
library_dirs=cfg['library_dirs'],
runtime_library_dirs=cfg['runtime_library_dirs'],
)
_version_info = zmq_version_info()
except Exception as e:
raise ImportError("PyZMQ CFFI backend couldn't find zeromq: %s\n"
"Please check that you have zeromq headers and libraries." % e)
if _version_info < (3,2,2):
raise ImportError("PyZMQ CFFI backend requires zeromq >= 3.2.2,"
" but found %i.%i.%i" % _version_info
)
nsp = new_sizet_pointer = lambda length: ffi.new('size_t*', length)
new_uint64_pointer = lambda: (ffi.new('uint64_t*'),
nsp(ffi.sizeof('uint64_t')))
new_int64_pointer = lambda: (ffi.new('int64_t*'),
nsp(ffi.sizeof('int64_t')))
new_int_pointer = lambda: (ffi.new('int*'),
nsp(ffi.sizeof('int')))
new_binary_data = lambda length: (ffi.new('char[%d]' % (length)),
nsp(ffi.sizeof('char') * length))
value_uint64_pointer = lambda val : (ffi.new('uint64_t*', val),
ffi.sizeof('uint64_t'))
value_int64_pointer = lambda val: (ffi.new('int64_t*', val),
ffi.sizeof('int64_t'))
value_int_pointer = lambda val: (ffi.new('int*', val),
ffi.sizeof('int'))
value_binary_data = lambda val, length: (ffi.new('char[%d]' % (length + 1), val),
ffi.sizeof('char') * length)
IPC_PATH_MAX_LEN = C.get_ipc_path_max_len()
|
