diff options
Diffstat (limited to 'vendor/rustix/src/timespec.rs')
-rw-r--r-- | vendor/rustix/src/timespec.rs | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/vendor/rustix/src/timespec.rs b/vendor/rustix/src/timespec.rs new file mode 100644 index 000000000..55c4c061b --- /dev/null +++ b/vendor/rustix/src/timespec.rs @@ -0,0 +1,108 @@ +//! `Timespec` and related types, which are used by multiple public API +//! modules. + +use crate::backend::c; + +/// `struct timespec` +#[cfg(not(all( + libc, + any(target_arch = "arm", target_arch = "mips", target_arch = "x86"), + target_env = "gnu", +)))] +pub type Timespec = c::timespec; + +/// `struct timespec` +#[cfg(all( + libc, + any(target_arch = "arm", target_arch = "mips", target_arch = "x86"), + target_env = "gnu", +))] +#[derive(Debug, Clone, Copy)] +#[repr(C)] +pub struct Timespec { + /// Seconds. + pub tv_sec: Secs, + + /// Nanoseconds. Must be less than 1_000_000_000. + pub tv_nsec: Nsecs, +} + +/// A type for the `tv_sec` field of [`Timespec`]. +#[cfg(not(all( + any(target_arch = "arm", target_arch = "mips", target_arch = "x86"), + target_env = "gnu", +)))] +#[allow(deprecated)] +pub type Secs = c::time_t; + +/// A type for the `tv_sec` field of [`Timespec`]. +#[cfg(all( + any(target_arch = "arm", target_arch = "mips", target_arch = "x86"), + target_env = "gnu", +))] +pub type Secs = i64; + +/// A type for the `tv_nsec` field of [`Timespec`]. +#[cfg(all(libc, target_arch = "x86_64", target_pointer_width = "32"))] +pub type Nsecs = i64; + +/// A type for the `tv_nsec` field of [`Timespec`]. +#[cfg(all(libc, not(all(target_arch = "x86_64", target_pointer_width = "32"))))] +pub type Nsecs = c::c_long; + +/// A type for the `tv_nsec` field of [`Timespec`]. +#[cfg(linux_raw)] +pub type Nsecs = i64; + +/// On 32-bit glibc platforms, `timespec` has anonymous padding fields, which +/// Rust doesn't support yet (see `unnamed_fields`), so we define our own +/// struct with explicit padding, with bidirectional `From` impls. +#[cfg(all( + libc, + any(target_arch = "arm", target_arch = "mips", target_arch = "x86"), + target_env = "gnu", +))] +#[repr(C)] +#[derive(Debug, Clone)] +pub(crate) struct LibcTimespec { + pub(crate) tv_sec: Secs, + + #[cfg(target_endian = "big")] + padding: core::mem::MaybeUninit<u32>, + + pub(crate) tv_nsec: Nsecs, + + #[cfg(target_endian = "little")] + padding: core::mem::MaybeUninit<u32>, +} + +#[cfg(all( + libc, + any(target_arch = "arm", target_arch = "mips", target_arch = "x86"), + target_env = "gnu", +))] +impl From<LibcTimespec> for Timespec { + #[inline] + fn from(t: LibcTimespec) -> Self { + Self { + tv_sec: t.tv_sec, + tv_nsec: t.tv_nsec, + } + } +} + +#[cfg(all( + libc, + any(target_arch = "arm", target_arch = "mips", target_arch = "x86"), + target_env = "gnu", +))] +impl From<Timespec> for LibcTimespec { + #[inline] + fn from(t: Timespec) -> Self { + Self { + tv_sec: t.tv_sec, + tv_nsec: t.tv_nsec, + padding: core::mem::MaybeUninit::uninit(), + } + } +} |