Files
deb-python-eventlet/eventlet/green/os.py
amajorek 41ef54f570 New eventlet.common module to create version-neutral layer. For now only get_errno added there.
All usage of e[0] replaced with either get_errno(e) or e.args[0] if intnetion was not to extract errno, but first argument
2010-02-28 14:53:07 -05:00

79 lines
2.1 KiB
Python

os_orig = __import__("os")
import errno
socket = __import__("socket")
from eventlet import greenio
from eventlet.common import get_errno
from eventlet import greenthread
from eventlet import hubs
__patched__ = ['fdopen', 'read', 'write', 'wait', 'waitpid']
for var in dir(os_orig):
exec "%s = os_orig.%s" % (var, var)
__original_fdopen__ = os_orig.fdopen
def fdopen(*args, **kw):
"""fdopen(fd [, mode='r' [, bufsize]]) -> file_object
Return an open file object connected to a file descriptor."""
return greenio.GreenPipe(__original_fdopen__(*args, **kw))
__original_read__ = os_orig.read
def read(fd, n):
"""read(fd, buffersize) -> string
Read a file descriptor."""
while True:
try:
return __original_read__(fd, n)
except (OSError, IOError), e:
if get_errno(e) != errno.EAGAIN:
raise
except socket.error, e:
if get_errno(e) == errno.EPIPE:
return ''
raise
hubs.trampoline(fd, read=True)
__original_write__ = os_orig.write
def write(fd, st):
"""write(fd, string) -> byteswritten
Write a string to a file descriptor.
"""
while True:
try:
return __original_write__(fd, st)
except (OSError, IOError), e:
if get_errno(e) != errno.EAGAIN:
raise
except socket.error, e:
if get_errno(e) != errno.EPIPE:
raise
hubs.trampoline(fd, write=True)
def wait():
"""wait() -> (pid, status)
Wait for completion of a child process."""
return waitpid(0,0)
__original_waitpid__ = os_orig.waitpid
def waitpid(pid, options):
"""waitpid(...)
waitpid(pid, options) -> (pid, status)
Wait for completion of a given child process."""
if options & os.WNOHANG != 0:
return __original_waitpid__(pid, options)
else:
new_options = options | os.WNOHANG
while True:
rpid, status = __original_waitpid__(pid, new_options)
if status >= 0:
return rpid, status
greenthread.sleep(0.01)
# TODO: open