kopia lustrzana https://github.com/micropython/micropython-lib
52 wiersze
1.2 KiB
Python
52 wiersze
1.2 KiB
Python
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import ffi
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import struct
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import os
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libc = ffi.open("libc.so.6")
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#int epoll_create(int size);
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epoll_create = libc.func("i", "epoll_create", "i")
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#int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event);
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epoll_ctl = libc.func("i", "epoll_ctl", "iiip")
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#int epoll_wait(int epfd, struct epoll_event *events, int maxevents, int timeout);
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epoll_wait = libc.func("i", "epoll_wait", "ipii")
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EPOLLIN = 0x001
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EPOLLPRI = 0x002
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EPOLLOUT = 0x004
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EPOLL_CTL_ADD = 1
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EPOLL_CTL_DEL = 2
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EPOLL_CTL_MOD = 3
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class Epoll:
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def __init__(self, epfd):
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self.epfd = epfd
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self.evbuf = struct.pack("IQ", 0, 0)
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def register(self, fd, eventmask=EPOLLIN|EPOLLPRI|EPOLLOUT, retval=None):
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if retval is None:
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retval = fd
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s = struct.pack("IQ", eventmask, retval)
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r = epoll_ctl(self.epfd, EPOLL_CTL_ADD, fd, s)
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os.check_error(r)
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def poll(self, timeout=-1):
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s = bytearray(self.evbuf)
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n = epoll_wait(self.epfd, s, 1, timeout)
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os.check_error(n)
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res = []
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if n > 0:
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ev, h = struct.unpack("IQ", s)
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res.append((h, ev))
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return res
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def epoll():
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fd = epoll_create(4)
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os.check_error(fd)
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return Epoll(fd)
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