forked from M-Labs/libfringe
21 lines
498 B
Rust
21 lines
498 B
Rust
use core::atomic::{ATOMIC_USIZE_INIT, AtomicUsize, Ordering};
|
|
|
|
pub use self::imp::{map_stack, protect_stack, unmap_stack};
|
|
use self::imp::sys_page_size;
|
|
|
|
#[cfg(unix)]
|
|
#[path = "unix.rs"]
|
|
mod imp;
|
|
|
|
static PAGE_SIZE_CACHE: AtomicUsize = ATOMIC_USIZE_INIT;
|
|
pub fn page_size() -> usize {
|
|
match PAGE_SIZE_CACHE.load(Ordering::Relaxed) {
|
|
0 => {
|
|
let page_size = sys_page_size();
|
|
PAGE_SIZE_CACHE.store(page_size, Ordering::Relaxed);
|
|
page_size
|
|
}
|
|
page_size => page_size
|
|
}
|
|
}
|