use crate::from_success_code;
use std::io::Result;
use std::os::wasi::prelude::*;
#[derive(Debug, Copy, Clone)]
#[repr(i32)]
pub enum PosixFadviseAdvice {
Normal = libc::POSIX_FADV_NORMAL,
Sequential = libc::POSIX_FADV_SEQUENTIAL,
Random = libc::POSIX_FADV_RANDOM,
NoReuse = libc::POSIX_FADV_NOREUSE,
WillNeed = libc::POSIX_FADV_WILLNEED,
DontNeed = libc::POSIX_FADV_DONTNEED,
}
pub unsafe fn posix_fadvise(
fd: RawFd,
offset: libc::off_t,
len: libc::off_t,
advice: PosixFadviseAdvice,
) -> Result<()> {
from_success_code(libc::posix_fadvise(fd, offset, len, advice as libc::c_int))
}