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/* TOOD: Implement for other kqueue based systems
*/
use {Errno, Result};
#[cfg(not(target_os = "netbsd"))]
use libc::{timespec, time_t, c_int, c_long, intptr_t, uintptr_t};
#[cfg(target_os = "netbsd")]
use libc::{timespec, time_t, c_long, intptr_t, uintptr_t, size_t};
use libc;
use std::os::unix::io::RawFd;
use std::ptr;
// Redefine kevent in terms of programmer-friendly enums and bitfields.
#[derive(Clone, Copy)]
#[repr(C)]
pub struct KEvent {
pub ident: uintptr_t,
pub filter: EventFilter,
pub flags: EventFlag,
pub fflags: FilterFlag,
pub data: intptr_t,
// libc defines udata as a pointer on most OSes. But it's really
// more like an arbitrary tag
pub udata: uintptr_t
}
#[cfg(not(target_os = "netbsd"))]
#[repr(i16)]
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum EventFilter {
EVFILT_AIO = libc::EVFILT_AIO,
#[cfg(target_os = "dragonfly")]
EVFILT_EXCEPT = libc::EVFILT_EXCEPT,
#[cfg(any(target_os = "macos",
target_os = "dragonfly",
target_os = "freebsd"))]
EVFILT_FS = libc::EVFILT_FS,
#[cfg(target_os = "freebsd")]
EVFILT_LIO = libc::EVFILT_LIO,
#[cfg(target_os = "macos")]
EVFILT_MACHPORT = libc::EVFILT_MACHPORT,
EVFILT_PROC = libc::EVFILT_PROC,
EVFILT_READ = libc::EVFILT_READ,
EVFILT_SIGNAL = libc::EVFILT_SIGNAL,
EVFILT_TIMER = libc::EVFILT_TIMER,
#[cfg(any(target_os = "macos",
target_os = "dragonfly",
target_os = "freebsd"))]
EVFILT_USER = libc::EVFILT_USER,
#[cfg(target_os = "macos")]
EVFILT_VM = libc::EVFILT_VM,
EVFILT_VNODE = libc::EVFILT_VNODE,
EVFILT_WRITE = libc::EVFILT_WRITE,
}
#[cfg(target_os = "netbsd")]
#[repr(u32)]
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum EventFilter {
EVFILT_READ = libc::EVFILT_READ,
EVFILT_WRITE = libc::EVFILT_WRITE,
EVFILT_AIO = libc::EVFILT_AIO,
EVFILT_VNODE = libc::EVFILT_VNODE,
EVFILT_PROC = libc::EVFILT_PROC,
EVFILT_SIGNAL = libc::EVFILT_SIGNAL,
EVFILT_TIMER = libc::EVFILT_TIMER,
}
#[cfg(any(target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
bitflags!(
flags EventFlag: u16 {
const EV_ADD = libc::EV_ADD,
const EV_CLEAR = libc::EV_CLEAR,
const EV_DELETE = libc::EV_DELETE,
const EV_DISABLE = libc::EV_DISABLE,
const EV_DISPATCH = libc::EV_DISPATCH,
#[cfg(target_os = "freebsd")]
const EV_DROP = libc::EV_DROP,
const EV_ENABLE = libc::EV_ENABLE,
const EV_EOF = libc::EV_EOF,
const EV_ERROR = libc::EV_ERROR,
#[cfg(target_os = "macos")]
const EV_FLAG0 = libc::EV_FLAG0,
const EV_FLAG1 = libc::EV_FLAG1,
#[cfg(target_os = "dragonfly")]
const EV_NODATA = libc::EV_NODATA,
const EV_ONESHOT = libc::EV_ONESHOT,
#[cfg(target_os = "macos")]
const EV_OOBAND = libc::EV_OOBAND,
#[cfg(target_os = "macos")]
const EV_POLL = libc::EV_POLL,
const EV_RECEIPT = libc::EV_RECEIPT,
const EV_SYSFLAGS = libc::EV_SYSFLAGS,
}
);
#[cfg(any(target_os = "netbsd", target_os = "openbsd"))]
bitflags!(
flags EventFlag: u32 {
const EV_ADD = libc::EV_ADD,
const EV_DELETE = libc::EV_DELETE,
const EV_ENABLE = libc::EV_ENABLE,
const EV_DISABLE = libc::EV_DISABLE,
const EV_ONESHOT = libc::EV_ONESHOT,
const EV_CLEAR = libc::EV_CLEAR,
#[cfg(target_os = "openbsd")]
const EV_FLAG1 = libc::EV_FLAG1,
#[cfg(target_os = "netbsd")]
const EV_RECEIPT = libc::EV_RECEIPT,
const EV_DISPATCH = libc::EV_DISPATCH,
const EV_SYSFLAGS = libc::EV_SYSFLAGS,
const EV_FLAG1 = libc::EV_FLAG1,
const EV_EOF = libc::EV_EOF,
const EV_ERROR = libc::EV_ERROR,
}
);
bitflags!(
flags FilterFlag: u32 {
#[cfg(target_os = "macos")]
const NOTE_ABSOLUTE = libc::NOTE_ABSOLUTE,
#[cfg(target_os = "macos")]
const NOTE_APPACTIVE = libc::NOTE_APPACTIVE,
#[cfg(target_os = "macos")]
const NOTE_APPALLSTATES = libc::NOTE_APPALLSTATES,
#[cfg(target_os = "macos")]
const NOTE_APPBACKGROUND = libc::NOTE_APPBACKGROUND,
#[cfg(target_os = "macos")]
const NOTE_APPINACTIVE = libc::NOTE_APPINACTIVE,
#[cfg(target_os = "macos")]
const NOTE_APPNONUI = libc::NOTE_APPNONUI,
const NOTE_ATTRIB = libc::NOTE_ATTRIB,
const NOTE_CHILD = libc::NOTE_CHILD,
const NOTE_DELETE = libc::NOTE_DELETE,
#[cfg(target_os = "openbsd")]
const NOTE_EOF = libc::NOTE_EOF,
const NOTE_EXEC = libc::NOTE_EXEC,
const NOTE_EXIT = libc::NOTE_EXIT,
#[cfg(target_os = "macos")]
const NOTE_EXIT_REPARENTED = libc::NOTE_EXIT_REPARENTED,
#[cfg(target_os = "macos")]
const NOTE_EXITSTATUS = libc::NOTE_EXITSTATUS,
const NOTE_EXTEND = libc::NOTE_EXTEND,
#[cfg(any(target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
const NOTE_FFAND = libc::NOTE_FFAND,
#[cfg(any(target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
const NOTE_FFCOPY = libc::NOTE_FFCOPY,
#[cfg(any(target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
const NOTE_FFCTRLMASK = libc::NOTE_FFCTRLMASK,
#[cfg(any(target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
const NOTE_FFLAGSMASK = libc::NOTE_FFLAGSMASK,
#[cfg(any(target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
const NOTE_FFNOP = libc::NOTE_FFNOP,
#[cfg(any(target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
const NOTE_FFOR = libc::NOTE_FFOR,
const NOTE_FORK = libc::NOTE_FORK,
const NOTE_LINK = libc::NOTE_LINK,
const NOTE_LOWAT = libc::NOTE_LOWAT,
#[cfg(target_os = "freebsd")]
const NOTE_MSECONDS = libc::NOTE_MSECONDS,
#[cfg(target_os = "macos")]
const NOTE_NONE = libc::NOTE_NONE,
#[cfg(any(target_os = "macos", target_os = "freebsd"))]
const NOTE_NSECONDS = libc::NOTE_NSECONDS,
#[cfg(target_os = "dragonfly")]
const NOTE_OOB = libc::NOTE_OOB,
const NOTE_PCTRLMASK = libc::NOTE_PCTRLMASK,
const NOTE_PDATAMASK = libc::NOTE_PDATAMASK,
#[cfg(target_os = "macos")]
const NOTE_REAP = libc::NOTE_REAP,
const NOTE_RENAME = libc::NOTE_RENAME,
#[cfg(target_os = "macos")]
const NOTE_RESOURCEEND = libc::NOTE_RESOURCEEND,
const NOTE_REVOKE = libc::NOTE_REVOKE,
#[cfg(any(target_os = "macos", target_os = "freebsd"))]
const NOTE_SECONDS = libc::NOTE_SECONDS,
#[cfg(target_os = "macos")]
const NOTE_SIGNAL = libc::NOTE_SIGNAL,
const NOTE_TRACK = libc::NOTE_TRACK,
const NOTE_TRACKERR = libc::NOTE_TRACKERR,
#[cfg(any(target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
const NOTE_TRIGGER = libc::NOTE_TRIGGER,
#[cfg(target_os = "openbsd")]
const NOTE_TRUNCATE = libc::NOTE_TRUNCATE,
#[cfg(any(target_os = "macos", target_os = "freebsd"))]
const NOTE_USECONDS = libc::NOTE_USECONDS,
#[cfg(target_os = "macos")]
const NOTE_VM_ERROR = libc::NOTE_VM_ERROR,
#[cfg(target_os = "macos")]
const NOTE_VM_PRESSURE = libc::NOTE_VM_PRESSURE,
#[cfg(target_os = "macos")]
const NOTE_VM_PRESSURE_SUDDEN_TERMINATE = libc::NOTE_VM_PRESSURE_SUDDEN_TERMINATE,
#[cfg(target_os = "macos")]
const NOTE_VM_PRESSURE_TERMINATE = libc::NOTE_VM_PRESSURE_TERMINATE,
const NOTE_WRITE = libc::NOTE_WRITE,
}
);
pub fn kqueue() -> Result<RawFd> {
let res = unsafe { libc::kqueue() };
Errno::result(res)
}
pub fn kevent(kq: RawFd,
changelist: &[KEvent],
eventlist: &mut [KEvent],
timeout_ms: usize) -> Result<usize> {
// Convert ms to timespec
let timeout = timespec {
tv_sec: (timeout_ms / 1000) as time_t,
tv_nsec: ((timeout_ms % 1000) * 1_000_000) as c_long
};
kevent_ts(kq, changelist, eventlist, Some(timeout))
}
#[cfg(any(target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly",
target_os = "openbsd"))]
pub fn kevent_ts(kq: RawFd,
changelist: &[KEvent],
eventlist: &mut [KEvent],
timeout_opt: Option<timespec>) -> Result<usize> {
let res = unsafe {
libc::kevent(
kq,
changelist.as_ptr() as *const libc::kevent,
changelist.len() as c_int,
eventlist.as_mut_ptr() as *mut libc::kevent,
eventlist.len() as c_int,
if let Some(ref timeout) = timeout_opt {timeout as *const timespec} else {ptr::null()})
};
Errno::result(res).map(|r| r as usize)
}
#[cfg(target_os = "netbsd")]
pub fn kevent_ts(kq: RawFd,
changelist: &[KEvent],
eventlist: &mut [KEvent],
timeout_opt: Option<timespec>) -> Result<usize> {
let res = unsafe {
libc::kevent(
kq,
changelist.as_ptr() as *const libc::kevent,
changelist.len() as size_t,
eventlist.as_mut_ptr() as *mut libc::kevent,
eventlist.len() as size_t,
if let Some(ref timeout) = timeout_opt {timeout as *const timespec} else {ptr::null()})
};
Errno::result(res).map(|r| r as usize)
}
#[inline]
pub fn ev_set(ev: &mut KEvent,
ident: usize,
filter: EventFilter,
flags: EventFlag,
fflags: FilterFlag,
udata: uintptr_t) {
ev.ident = ident as uintptr_t;
ev.filter = filter;
ev.flags = flags;
ev.fflags = fflags;
ev.data = 0;
ev.udata = udata;
}
|
