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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/process/membarrier.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
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-rw-r--r--vendor/rustix/src/process/membarrier.rs92
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diff --git a/vendor/rustix/src/process/membarrier.rs b/vendor/rustix/src/process/membarrier.rs
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--- a/vendor/rustix/src/process/membarrier.rs
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-//! The Linux `membarrier` syscall.
-
-use crate::process::Cpuid;
-use crate::{backend, io};
-
-pub use backend::process::types::MembarrierCommand;
-
-#[cfg(linux_kernel)]
-bitflags::bitflags! {
- /// A result from [`membarrier_query`].
- ///
- /// These flags correspond to values of [`MembarrierCommand`] which are
- /// supported in the OS.
- #[repr(transparent)]
- #[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
- pub struct MembarrierQuery: u32 {
- /// `MEMBARRIER_CMD_GLOBAL` (also known as `MEMBARRIER_CMD_SHARED`)
- #[doc(alias = "SHARED")]
- #[doc(alias = "MEMBARRIER_CMD_SHARED")]
- const GLOBAL = MembarrierCommand::Global as _;
- /// `MEMBARRIER_CMD_GLOBAL_EXPEDITED`
- const GLOBAL_EXPEDITED = MembarrierCommand::GlobalExpedited as _;
- /// `MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED`
- const REGISTER_GLOBAL_EXPEDITED = MembarrierCommand::RegisterGlobalExpedited as _;
- /// `MEMBARRIER_CMD_PRIVATE_EXPEDITED`
- const PRIVATE_EXPEDITED = MembarrierCommand::PrivateExpedited as _;
- /// `MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED`
- const REGISTER_PRIVATE_EXPEDITED = MembarrierCommand::RegisterPrivateExpedited as _;
- /// `MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE`
- const PRIVATE_EXPEDITED_SYNC_CORE = MembarrierCommand::PrivateExpeditedSyncCore as _;
- /// `MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE`
- const REGISTER_PRIVATE_EXPEDITED_SYNC_CORE = MembarrierCommand::RegisterPrivateExpeditedSyncCore as _;
- /// `MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ` (since Linux 5.10)
- const PRIVATE_EXPEDITED_RSEQ = MembarrierCommand::PrivateExpeditedRseq as _;
- /// `MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_RSEQ` (since Linux 5.10)
- const REGISTER_PRIVATE_EXPEDITED_RSEQ = MembarrierCommand::RegisterPrivateExpeditedRseq as _;
-
- /// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags>
- const _ = !0;
- }
-}
-
-#[cfg(linux_kernel)]
-impl MembarrierQuery {
- /// Test whether this query result contains the given command.
- #[inline]
- pub fn contains_command(self, cmd: MembarrierCommand) -> bool {
- // `MembarrierCommand` is an enum that only contains values also valid
- // in `MembarrierQuery`.
- self.contains(Self::from_bits_retain(cmd as _))
- }
-}
-
-/// `membarrier(MEMBARRIER_CMD_QUERY, 0, 0)`—Query the supported `membarrier`
-/// commands.
-///
-/// This function doesn't return a `Result` because it always succeeds; if the
-/// underlying OS doesn't support the `membarrier` syscall, it returns an empty
-/// `MembarrierQuery` value.
-///
-/// # References
-/// - [Linux]
-///
-/// [Linux]: https://man7.org/linux/man-pages/man2/membarrier.2.html
-#[inline]
-#[doc(alias = "MEMBARRIER_CMD_QUERY")]
-pub fn membarrier_query() -> MembarrierQuery {
- backend::process::syscalls::membarrier_query()
-}
-
-/// `membarrier(cmd, 0, 0)`—Perform a memory barrier.
-///
-/// # References
-/// - [Linux]
-///
-/// [Linux]: https://man7.org/linux/man-pages/man2/membarrier.2.html
-#[inline]
-pub fn membarrier(cmd: MembarrierCommand) -> io::Result<()> {
- backend::process::syscalls::membarrier(cmd)
-}
-
-/// `membarrier(cmd, MEMBARRIER_CMD_FLAG_CPU, cpu)`—Perform a memory barrier
-/// with a specific CPU.
-///
-/// # References
-/// - [Linux]
-///
-/// [Linux]: https://man7.org/linux/man-pages/man2/membarrier.2.html
-#[inline]
-pub fn membarrier_cpu(cmd: MembarrierCommand, cpu: Cpuid) -> io::Result<()> {
- backend::process::syscalls::membarrier_cpu(cmd, cpu)
-}