24 lines
668 B
Rust
24 lines
668 B
Rust
// This file is part of libfringe, a low-level green threading library.
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// Copyright (c) edef <edef@edef.eu>
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// See the LICENSE file included in this distribution.
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use core::sync::atomic::{ATOMIC_USIZE_INIT, AtomicUsize, Ordering};
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pub use self::imp::{map_stack, protect_stack, unmap_stack};
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use self::imp::sys_page_size;
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#[cfg(unix)]
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#[path = "unix.rs"]
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mod imp;
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static PAGE_SIZE_CACHE: AtomicUsize = ATOMIC_USIZE_INIT;
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pub fn page_size() -> usize {
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match PAGE_SIZE_CACHE.load(Ordering::Relaxed) {
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0 => {
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let page_size = sys_page_size();
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PAGE_SIZE_CACHE.store(page_size, Ordering::Relaxed);
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page_size
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}
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page_size => page_size
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}
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}
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