Python dlopen示例

示例#1

文件： _winapi.py 项目： grubermeister/kamina-script

"""
Support routines for subprocess and multiprocess module.
Currently, this extension module is only required when using the
modules on Windows.
"""

import sys
if sys.platform != 'win32':
    raise ImportError("The '_winapi' module is only available on Windows")

# Declare external Win32 functions

from _pypy_winbase_cffi import ffi as _ffi
_kernel32 = _ffi.dlopen('kernel32')

GetVersion = _kernel32.GetVersion
NULL = _ffi.NULL

# Now the _subprocess module implementation

def _WinError():
    code, message = _ffi.getwinerror()
    raise WindowsError(code, message)

def _int2handle(val):
    return _ffi.cast("HANDLE", val)

def _handle2int(handle):
    return int(_ffi.cast("intptr_t", handle))

_INVALID_HANDLE_VALUE = _int2handle(-1)

示例#2

文件： msvcrt.py 项目： indrajithbandara/google-cloud-function-pythonic

Library, providing access to those non-portable, but
still useful routines.
"""

# XXX incomplete: implemented only functions needed by subprocess.py
# PAC: 2010/08 added MS locking for Whoosh

# 07/2016: rewrote in CFFI

import sys
if sys.platform != 'win32':
    raise ImportError("The 'msvcrt' module is only available on Windows")

import _rawffi
from _pypy_winbase_cffi import ffi as _ffi
_lib = _ffi.dlopen(_rawffi.get_libc().name)
_kernel32 = _ffi.dlopen('kernel32')

import errno

try:
    from __pypy__ import builtinify, validate_fd
except ImportError:
    builtinify = validate_fd = lambda f: f


def _ioerr():
    e = _ffi.errno
    raise IOError(e, errno.errorcode[e])

示例#3

文件： _subprocess.py 项目： mozillazg/pypy

"""
Support routines for subprocess module.
Currently, this extension module is only required when using the
subprocess module on Windows.
"""

import sys
if sys.platform != 'win32':
    raise ImportError("The '_subprocess' module is only available on Windows")

# Declare external Win32 functions

from _pypy_winbase_cffi import ffi as _ffi
_kernel32 = _ffi.dlopen('kernel32')

GetVersion = _kernel32.GetVersion


# Now the _subprocess module implementation

def _WinError():
    code, message = _ffi.getwinerror()
    raise WindowsError(code, message)

def _int2handle(val):
    return _ffi.cast("HANDLE", val)

_INVALID_HANDLE_VALUE = _int2handle(-1)

class _handle(object):
    def __init__(self, c_handle):

示例#4

Library, providing access to those non-portable, but
still useful routines.
"""

# XXX incomplete: implemented only functions needed by subprocess.py
# PAC: 2010/08 added MS locking for Whoosh

# 07/2016: rewrote in CFFI

import sys
if sys.platform != 'win32':
    raise ImportError("The 'msvcrt' module is only available on Windows")

import _rawffi
from _pypy_winbase_cffi import ffi as _ffi
_lib = _ffi.dlopen(_rawffi.get_libc().name)

import errno

try:
    from __pypy__ import builtinify, validate_fd
except ImportError:
    builtinify = validate_fd = lambda f: f


def _ioerr():
    e = _ffi.errno
    raise IOError(e, errno.errorcode[e])


@builtinify

示例#5

文件： msvcrt.py 项目： mozillazg/pypy

Library, providing access to those non-portable, but
still useful routines.
"""

# XXX incomplete: implemented only functions needed by subprocess.py
# PAC: 2010/08 added MS locking for Whoosh

# 07/2016: rewrote in CFFI

import sys
if sys.platform != 'win32':
    raise ImportError("The 'msvcrt' module is only available on Windows")

import _rawffi
from _pypy_winbase_cffi import ffi as _ffi
_lib = _ffi.dlopen(_rawffi.get_libc().name)

import errno

try: from __pypy__ import builtinify, validate_fd
except ImportError: builtinify = validate_fd = lambda f: f


def _ioerr():
    e = _ffi.errno
    raise IOError(e, errno.errorcode[e])


@builtinify
def open_osfhandle(fd, flags):
    """"open_osfhandle(handle, flags) -> file descriptor

示例#6

文件： _overlapped.py 项目： sibajie/a-simple-flask-blog

"""
Support routines for overlapping io.
Currently, this extension module is only required when using the
modules on Windows.
"""

import sys
if sys.platform != 'win32':
    raise ImportError("The '_overlapped' module is only available on Windows")

# Declare external Win32 functions

from _pypy_winbase_cffi import ffi as _ffi
_kernel32 = _ffi.dlopen('kernel32')

_winsock2 = _ffi.dlopen('Ws2_32')

_mswsock = _ffi.dlopen('Mswsock')

GetVersion = _kernel32.GetVersion
NULL = _ffi.NULL

from _winapi import INVALID_HANDLE_VALUE, _MAX_PATH, _Z, RaiseFromWindowsErr
import _winapi

#
# Error Codes
#
ERROR_IO_PENDING = 997
ERROR_PIPE_BUSY = 231
ERROR_NETNAME_DELETED = 64