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#
#
# Nim's Runtime Library
# (c) Copyright 2015 Adam Strzelecki
#
# See the file "copying.txt", included in this
# distribution, for details about the copyright.
#
{.deadCodeElim:on.}
from posix import Timespec
# Filters:
const
EVFILT_READ* = -1
EVFILT_WRITE* = -2
EVFILT_AIO* = -3
EVFILT_VNODE* = -4
EVFILT_PROC* = -5
EVFILT_SIGNAL* = -6
EVFILT_TIMER* = -7
EVFILT_MACHPORT* = -8
EVFILT_FS* = -9
EVFILT_USER* = -10
# -11 is unused
EVFILT_VM* = -12
# Actions:
const
EV_ADD* = 0x0001 ## Add event to queue (implies enable).
## Re-adding an existing element modifies it.
EV_DELETE* = 0x0002 ## Delete event from queue.
EV_ENABLE* = 0x0004 ## Enable event.
EV_DISABLE* = 0x0008 ## Disable event (not reported).
# Flags:
const
EV_ONESHOT* = 0x0010 ## Only report one occurrence.
EV_CLEAR* = 0x0020 ## Clear event state after reporting.
EV_RECEIPT* = 0x0040 ## Force EV_ERROR on success, data == 0
EV_DISPATCH* = 0x0080 ## Disable event after reporting.
# Return values:
const
EV_EOF* = 0x8000 ## EOF detected
EV_ERROR* = 0x4000 ## Error, data contains errno
type
KEvent* {.importc: "struct kevent",
header: "<sys/event.h>", pure, final.} = object
ident*: cuint ## identifier for this event (uintptr_t)
filter*: cshort ## filter for event
flags*: cushort ## general flags
fflags*: cuint ## filter-specific flags
data*: cuint ## filter-specific data (intptr_t)
#udata*: ptr void ## opaque user data identifier
proc kqueue*(): cint {.importc: "kqueue", header: "<sys/event.h>".}
## Creates new queue and returns its descriptor.
proc kevent*(kqFD: cint,
changelist: ptr KEvent, nchanges: cint,
eventlist: ptr KEvent, nevents: cint, timeout: ptr Timespec): cint
{.importc: "kevent", header: "<sys/event.h>".}
## Manipulates queue for given ``kqFD`` descriptor.
proc EV_SET*(event: ptr KEvent, ident: cuint, filter: cshort, flags: cushort,
fflags: cuint, data: cuint, udata: ptr void)
{.importc: "EV_SET", header: "<sys/event.h>".}
## Fills event with given data.
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