Struct TimeSpec 

#[repr(C)]
pub struct TimeSpec {
    pub tv_sec: c_long,
    pub tv_nsec: c_long,
}

用于指定秒和纳秒精度的时间

Fields

tv_sec: c_long

秒 (seconds)

tv_nsec: c_long

纳秒 (nanoseconds)

Implementations

impl TimeSpec

pub const UTIME_NOW: c_long = 1_073_741_823i64

特殊值：设置为当前时间（UTIME_NOW，用于 utimensat）

pub const UTIME_OMIT: c_long = 1_073_741_822i64

特殊值：不改变此时间（UTIME_OMIT，用于 utimensat）

pub fn new(sec: c_long, nsec: c_long) -> Self

创建一个新的 TimeSpec 结构体

参数:

• sec: 秒数
• nsec: 纳秒数

返回值:

• 对应的 TimeSpec 结构体

pub fn into_freq(&self, freq: usize) -> usize

将 TimeSpec 转换为指定频率的刻度数。

参数:

• freq: 频率（每秒刻度数）

返回值:

• 刻度数

pub fn from_freq(ticks: usize, freq: usize) -> Self

通过指定频率的刻度数创建 TimeSpec。

参数:

• ticks: 刻度数
• freq: 频率（每秒刻度数）

返回值:

• 对应的 TimeSpec 结构体

pub fn now() -> Self

获取当前墙上时钟时间的 TimeSpec。

返回值:

• 当前时间的 TimeSpec 结构体

pub fn monotonic_now() -> Self

获取当前单调时钟时间的 TimeSpec。

返回值:

• 当前单调时间的 TimeSpec 结构体

pub fn zero() -> Self

创建零时间的 TimeSpec。

返回值:

• 零时间的 TimeSpec 结构体

pub fn validate(&self) -> Result<(), i32>

验证 TimeSpec 的有效性（用于 utimensat）

返回值

• Ok(()): 有效
• Err(EINVAL): 无效

pub fn to_timeval(&self) -> timeval

将 TimeSpec 转换为 timeval 结构体。

返回值:

• 对应的 timeval 结构体

pub fn is_zero(&self) -> bool

检查是否为零时间

pub fn is_now(&self) -> bool

检查是否为 UTIME_NOW（用于 utimensat）

pub fn is_omit(&self) -> bool

检查是否为 UTIME_OMIT（用于 utimensat）

Trait Implementations

impl Add for TimeSpec

type Output = TimeSpec

The resulting type after applying the + operator.

fn add(self, other: TimeSpec) -> TimeSpec

Performs the + operation.

impl Clone for TimeSpec

fn clone(&self) -> TimeSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TimeSpec

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

Formats the value using the given formatter.

impl Ord for TimeSpec

fn cmp(&self, other: &TimeSpec) -> Ordering

This method returns an [Ordering] between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for TimeSpec

fn eq(&self, other: &TimeSpec) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for TimeSpec

fn partial_cmp(&self, other: &TimeSpec) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub for TimeSpec

type Output = TimeSpec

The resulting type after applying the - operator.

fn sub(self, other: TimeSpec) -> TimeSpec

Performs the - operation.

impl Copy for TimeSpec

impl Eq for TimeSpec

impl StructuralPartialEq for TimeSpec