epoll

nimony/lib/std/posix/epoll.nim

• const EPOLLIN: uint32
• const EPOLLPRI: uint32
• const EPOLLOUT: uint32
• const EPOLLERR: uint32
• const EPOLLHUP: uint32
• const EPOLLRDNORM: uint32
• const EPOLLRDBAND: uint32
• const EPOLLWRNORM: uint32
• const EPOLLWRBAND: uint32
• const EPOLLMSG: uint32
• const EPOLLRDHUP: uint32
• const EPOLLEXCLUSIVE: uint32
• const EPOLLWAKEUP: uint32
• const EPOLLONESHOT: uint32
• const EPOLLET: uint32
• const EPOLL_CTL_ADD: int32
• const EPOLL_CTL_DEL: int32
• const EPOLL_CTL_MOD: int32

• type EpollData = object
    ptr: pointer not nil
    fd: int32
    u32: uint32
    u64: uint64

• type EpollEvent = object
    events: uint32
    data: EpollData

• proc epoll_create(size: int32): int32

  Creates an epoll instance. Returns an fd for the new instance.

  The "size" parameter is a hint specifying the number of file descriptors to be associated with the new instance. The fd returned by epoll_create() should be closed with close().

• proc epoll_create1(flags: int32): int32

  Same as epoll_create but with an FLAGS parameter. The unused SIZE parameter has been dropped.

• proc epoll_ctl(epfd: int32; op: int32; fd: FD; event: ptr EpollEvent): int32

  Manipulate an epoll instance "epfd". Returns 0 in case of success, -1 in case of error (the "errno" variable will contain the specific error code).

  The "op" parameter is one of the EPOLL_CTL_* constants defined above. The "fd" parameter is the target of the operation. The "event" parameter describes which events the caller is interested in and any associated user data.

• proc epoll_wait(epfd: int32; events: ptr EpollEvent not nil; maxevents: int32; timeout: int32): int32

  Wait for events on an epoll instance "epfd". Returns the number of triggered events returned in "events" buffer. Or -1 in case of error with the "errno" variable set to the specific error code. The "events" parameter is a buffer that will contain triggered events. The "maxevents" is the maximum number of events to be returned ( usually size of "events" ). The "timeout" parameter specifies the maximum wait time in milliseconds (-1 == infinite).

  This function is a cancellation point and therefore not marked with __THROW.