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#
#
# Nim's Runtime Library
# (c) Copyright 2013 Dominik Picheta
#
# See the file "copying.txt", included in this
# distribution, for details about the copyright.
#
from posix import SocketHandle
const
EPOLLIN* = 0x00000001
EPOLLPRI* = 0x00000002
EPOLLOUT* = 0x00000004
EPOLLERR* = 0x00000008
EPOLLHUP* = 0x00000010
EPOLLRDNORM* = 0x00000040
EPOLLRDBAND* = 0x00000080
EPOLLWRNORM* = 0x00000100
EPOLLWRBAND* = 0x00000200
EPOLLMSG* = 0x00000400
EPOLLRDHUP* = 0x00002000
EPOLLEXCLUSIVE* = 1 shl 28
EPOLLWAKEUP* = 1 shl 29
EPOLLONESHOT* = 1 shl 30
EPOLLET* = 1 shl 31
# Valid opcodes ( "op" parameter ) to issue to epoll_ctl().
const
EPOLL_CTL_ADD* = 1 # Add a file descriptor to the interface.
EPOLL_CTL_DEL* = 2 # Remove a file descriptor from the interface.
EPOLL_CTL_MOD* = 3 # Change file descriptor epoll_event structure.
type
EpollData* {.importc: "union epoll_data",
header: "<sys/epoll.h>", pure, final.} = object # TODO: This is actually a union.
u64* {.importc: "u64".}: uint64
EpollEvent* {.importc: "struct epoll_event", header: "<sys/epoll.h>", pure, final.} = object
events*: uint32 # Epoll events
data*: EpollData # User data variable
proc epoll_create*(size: cint): cint {.importc: "epoll_create",
header: "<sys/epoll.h>".}
## 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: cint): cint {.importc: "epoll_create1",
header: "<sys/epoll.h>".}
## Same as epoll_create but with an FLAGS parameter. The unused SIZE
## parameter has been dropped.
proc epoll_ctl*(epfd: cint; op: cint; fd: cint | SocketHandle; event: ptr EpollEvent): cint {.
importc: "epoll_ctl", header: "<sys/epoll.h>".}
## 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: cint; events: ptr EpollEvent; maxevents: cint;
timeout: cint): cint {.importc: "epoll_wait",
header: "<sys/epoll.h>".}
## 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.
#proc epoll_pwait*(epfd: cint; events: ptr EpollEvent; maxevents: cint;
# timeout: cint; ss: ptr sigset_t): cint {.
# importc: "epoll_pwait", header: "<sys/epoll.h>".}
# Same as epoll_wait, but the thread's signal mask is temporarily
# and atomically replaced with the one provided as parameter.
#
# This function is a cancellation point and therefore not marked with
# __THROW.
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