use core::ptr;
pub unsafe fn map_anonymous(_size: usize) -> *mut u8 {
ptr::null_mut() }
pub unsafe fn unmap(_ptr: *mut u8, _size: usize) {
}
pub unsafe fn protect_none(_ptr: *mut u8, _size: usize) {
}
pub unsafe fn protect_read_write(_ptr: *mut u8, _size: usize) {
}
pub unsafe fn advise_free(_ptr: *mut u8, _size: usize) {
}
pub fn num_cpus() -> usize {
1 }
#[inline]
pub fn thread_id() -> usize {
0 }