Function nanosleep [src]

Spurious wakeups are possible and no precision of timing is guaranteed.

Prototype

pub fn nanosleep(seconds: u64, nanoseconds: u64) void

Parameters

seconds: u64nanoseconds: u64

Source

  pub fn nanosleep(seconds: u64, nanoseconds: u64) void {
    var req = timespec{
        .sec = cast(isize, seconds) orelse maxInt(isize),
        .nsec = cast(isize, nanoseconds) orelse maxInt(isize),
    };
    var rem: timespec = undefined;
    while (true) {
        switch (errno(system.nanosleep(&req, &rem))) {
            .FAULT => unreachable,
            .INVAL => {
                // Sometimes Darwin returns EINVAL for no reason.
                // We treat it as a spurious wakeup.
                return;
            },
            .INTR => {
                req = rem;
                continue;
            },
            // This prong handles success as well as unexpected errors.
            else => return,
        }
    }
}  