as the title:
I'm reading the source code of selectors, I got this:
# generic events, that must be mapped to implementation-specific ones
EVENT_READ = (1 << 0)
EVENT_WRITE = (1 << 1)
maybe we can add definitions for EVENT_ERROR like this:
# Choose the best implementation, roughly:
# epoll|kqueue|devpoll > poll > select.
# select() also can't accept a FD > FD_SETSIZE (usually around 1024)
if 'KqueueSelector' in globals():
DefaultSelector = KqueueSelector
EVENT_ERROR = EVENT_WRITE << 1
elif 'EpollSelector' in globals():
...
elif ...:
...
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