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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/rustix/src/mm/madvise.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
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-//! The `madvise` function.
-//!
-//! # Safety
-//!
-//! `madvise` operates on a raw pointer. Some forms of `madvise` may
-//! mutate the memory or have other side effects.
-#![allow(unsafe_code)]
-
-use crate::{backend, io};
-use core::ffi::c_void;
-
-pub use backend::mm::types::Advice;
-
-/// `posix_madvise(addr, len, advice)`—Declares an expected access pattern
-/// for a memory-mapped file.
-///
-/// # Safety
-///
-/// `addr` must be a valid pointer to memory that is appropriate to call
-/// `posix_madvise` on. Some forms of `advice` may mutate the memory or evoke a
-/// variety of side-effects on the mapping and/or the file.
-///
-/// # References
-/// - [POSIX]
-/// - [Linux `madvise`]
-/// - [Linux `posix_madvise`]
-/// - [Apple]
-/// - [FreeBSD]
-/// - [NetBSD]
-/// - [OpenBSD]
-/// - [DragonFly BSD]
-/// - [illumos]
-/// - [glibc]
-///
-/// [POSIX]: https://pubs.opengroup.org/onlinepubs/9699919799/functions/posix_madvise.html
-/// [Linux `madvise`]: https://man7.org/linux/man-pages/man2/madvise.2.html
-/// [Linux `posix_madvise`]: https://man7.org/linux/man-pages/man3/posix_madvise.3.html
-/// [Apple]: https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/madvise.2.html
-/// [FreeBSD]: https://man.freebsd.org/cgi/man.cgi?query=madvise&sektion=2
-/// [NetBSD]: https://man.netbsd.org/madvise.2
-/// [OpenBSD]: https://man.openbsd.org/madvise.2
-/// [DragonFly BSD]: https://man.dragonflybsd.org/?command=madvise&section=2
-/// [illumos]: https://illumos.org/man/3C/madvise
-/// [glibc]: https://www.gnu.org/software/libc/manual/html_node/Memory_002dmapped-I_002fO.html#index-madvise
-#[inline]
-#[doc(alias = "posix_madvise")]
-pub unsafe fn madvise(addr: *mut c_void, len: usize, advice: Advice) -> io::Result<()> {
- backend::mm::syscalls::madvise(addr, len, advice)
-}