Struct Status 

pub struct Status<const MIN: c_int, const MAX: c_int>(/* private fields */);

A native scalar retained with the exact domain its producer guarantees, so every decoder below is total: the producer’s ABI proof is discharged once at construction and reused without a second range check.

Implementations

impl<const MIN: c_int, const MAX: c_int> Status<MIN, MAX>

pub const unsafe fn new(raw: c_int) -> Self

Retains the return domain established by one native operation.

Safety

raw lies in MIN..=MAX, as guaranteed by the operation producing it.

impl Status<-1, 0>

pub unsafe fn try_zero<E: From<Errno>>( self, errno: impl FnOnce() -> Errno, ) -> Result<(), E>

Decodes a native zero-or-minus-one operation without erasing errno.

Safety

errno reads that thread’s slot before another syscall.

impl Status<-1, { i32::MAX }>

pub const unsafe fn from_count(raw: ssize_t) -> Self

Retains a native count whose exact syscall operand already bounds it.

Safety

raw is the unchanged return of that count-returning syscall: native -1 or 0..=i32::MAX.

pub fn try_value<E: From<Errno>>( self, errno: impl FnOnce() -> Errno, ) -> Result<Value, E>

Converts the retained native scalar domain without checking its range again.

pub unsafe fn try_count<E: From<Errno>>( self, errno: impl FnOnce() -> Errno, ) -> Result<Count, E>

Decodes one count-returning operation against the exact extent it was given.

Safety

errno reads that thread’s slot before another syscall.

pub const unsafe fn admit_exact<const VALUE: c_int>(self) -> Exact<VALUE>

Tightens this scalar to one operation’s exact -1-or-VALUE return.

Safety

That operation reports exactly VALUE or -1 for these arguments.

impl Status<0, { i32::MAX }>

pub fn try_pthread(self) -> Result<(), Errno>

Decodes the error code returned directly by a pthread operation.

Trait Implementations

impl<const MIN: c_int, const MAX: c_int> Clone for Status<MIN, MAX>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<const MIN: c_int, const MAX: c_int> Copy for Status<MIN, MAX>

impl<const MIN: c_int, const MAX: c_int> Debug for Status<MIN, MAX>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.