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This is an example of documentation generated by ZigDoc, an alternative to Zig's built-in Auto Doc feature. See also examples in other modes/formats. The project being documented here (as the example) is the Zig standard library. Private Function

futexWake

Doc Source

Private Function

std.Io.Dispatch.futexWake

fn futexWake(userdata: ?*anyopaque, ptr: *const u32, max_waiters: u32) void

Params

userdata: ?*anyopaque
ptr: *const u32
max_waiters: u32

File

Io/Dispatch.zig:1678

fn futexWake(userdata: ?*anyopaque, ptr: *const u32, max_waiters: u32) void {
    const ev: *Evented = @ptrCast(@alignCast(userdata));
    if (max_waiters == 0) return;
    const futex = ev.futexForAddress(@intFromPtr(ptr));
    switch (@atomicRmw(usize, &futex.num_waiters, .Add, 0, .release)) {
        0 => return,
        else => {
            @branchHint(.unlikely);
            var waker: Futex.Waker = .{ .futex = futex, .ptr = ptr, .max_waiters = max_waiters };
            ev.yield(.{ .futex_wake = &waker });
        },
    }
}