SignalNum

libc_core::signal

Enum SignalNum

#[repr(u8)]pub enum SignalNum {
Show 64 variants    HUP = 1,
    INT = 2,
    QUIT = 3,
    ILL = 4,
    TRAP = 5,
    ABRT = 6,
    BUS = 7,
    FPE = 8,
    KILL = 9,
    USR1 = 10,
    SEGV = 11,
    USR2 = 12,
    PIPE = 13,
    ALRM = 14,
    TERM = 15,
    STKFLT = 16,
    CHLD = 17,
    CONT = 18,
    STOP = 19,
    TSTP = 20,
    TTIN = 21,
    TTOU = 22,
    URG = 23,
    XCPU = 24,
    XFSZ = 25,
    VTALRM = 26,
    PROF = 27,
    WINCH = 28,
    IO = 29,
    PWR = 30,
    SYS = 31,
    TIMER = 32,
    CANCEL = 33,
    SYNCCALL = 34,
    RT3 = 35,
    RT4 = 36,
    RT5 = 37,
    RT6 = 38,
    RT7 = 39,
    RT8 = 40,
    RT9 = 41,
    RT10 = 42,
    RT11 = 43,
    RT12 = 44,
    RT13 = 45,
    RT14 = 46,
    RT15 = 47,
    RT16 = 48,
    RT17 = 49,
    RT18 = 50,
    RT19 = 51,
    RT20 = 52,
    RT21 = 53,
    RT22 = 54,
    RT23 = 55,
    RT24 = 56,
    RT25 = 57,
    RT26 = 58,
    RT27 = 59,
    RT28 = 60,
    RT29 = 61,
    RT30 = 62,
    RT31 = 63,
    RTMAX = 64,
}

Expand description

POSIX 标准、线程扩展与实时信号枚举定义（信号编号从 1 开始） MUSL: https://github.com/bminor/musl/blob/c47ad25ea3b484e10326f933e927c0bc8cded3da/arch/aarch64/bits/signal.h#L118

Variants§

HUP = 1

终端挂起（Hangup）

INT = 2

交互式中断（Interrupt）

QUIT = 3

退出（Quit）

ILL = 4

非法指令（Illegal instruction）

TRAP = 5

断点（Trace/breakpoint trap）

ABRT = 6

异常终止（Abort）

BUS = 7

总线错误（Bus error）

FPE = 8

浮点异常（Floating-point exception）

KILL = 9

强制终止（Kill，不可被捕获或忽略）

USR1 = 10

用户定义信号 1

SEGV = 11

段错误（Segmentation fault）

USR2 = 12

用户定义信号 2

PIPE = 13

管道破裂（Broken pipe）

ALRM = 14

报警时钟（Alarm clock）

TERM = 15

终止请求（Termination）

STKFLT = 16

协处理器堆栈故障（栈浮点错误，仅部分平台支持）

CHLD = 17

子进程终止或状态变化（Child）

CONT = 18

继续执行（Continue）

STOP = 19

停止进程（不可忽略）

TSTP = 20

终端停止（来自 TTY 的 Ctrl+Z）

TTIN = 21

后台读取控制终端

TTOU = 22

后台写入控制终端

URG = 23

紧急条件（Urgent socket）

XCPU = 24

超过 CPU 时间限制

XFSZ = 25

超过文件大小限制

VTALRM = 26

虚拟计时器到期（Virtual alarm）

PROF = 27

性能分析计时器到期（Profiling alarm）

WINCH = 28

窗口大小改变（Window size change）

IO = 29

异步 I/O（I/O now possible）

PWR = 30

电源失败（Power failure）

SYS = 31

非法系统调用（Bad syscall）

TIMER = 32

POSIX 线程：定时器信号

CANCEL = 33

POSIX 线程：取消信号

SYNCCALL = 34

POSIX 线程：同步调用信号

RT3 = 35

实时信号 3（Real-time signal 3）

RT4 = 36

实时信号 4

RT5 = 37

实时信号 5

RT6 = 38

实时信号 6

RT7 = 39

实时信号 7

RT8 = 40

实时信号 8

RT9 = 41

实时信号 9

RT10 = 42

实时信号 10

RT11 = 43

实时信号 11

RT12 = 44

实时信号 12

RT13 = 45

实时信号 13

RT14 = 46

实时信号 14

RT15 = 47

实时信号 15

RT16 = 48

实时信号 16

RT17 = 49

实时信号 17

RT18 = 50

实时信号 18

RT19 = 51

实时信号 19

RT20 = 52

实时信号 20

RT21 = 53

实时信号 21

RT22 = 54

实时信号 22

RT23 = 55

实时信号 23

RT24 = 56

实时信号 24

RT25 = 57

实时信号 25

RT26 = 58

实时信号 26

RT27 = 59

实时信号 27

RT28 = 60

实时信号 28

RT29 = 61

实时信号 29

RT30 = 62

实时信号 30

RT31 = 63

实时信号 31

RTMAX = 64

最大实时信号（Real-time signal max）

Implementations§

impl SignalNum

pub fn from_num(num: usize) -> Option<SignalNum>

从数字构造 SignalNum 枚举，如果超出合法范围则返回 None。

pub const fn num(&self) -> usize

获取信号的编号（number）。

pub const fn is_rt(&self) -> bool

判断是否为实时信号（Real-time Signal）。

实时信号从编号 REAL_TIME_SIGNAL_NUM 开始。

pub fn real_time_index(&self) -> Option<usize>

如果是实时信号，则返回其在实时信号表中的索引（从 1 开始）。

例如，编号为 REAL_TIME_SIGNAL_NUM 的信号返回 1。

pub const fn mask(&self) -> u64

获取信号的位掩码（bit mask）。

信号编号从 1 开始，因此返回值为 1 << (num - 1)。

Trait Implementations§

impl Clone for SignalNum

fn clone(&self) -> SignalNum

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for SignalNum

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

Formats the value using the given formatter. Read more

impl PartialEq for SignalNum

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

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

1.0.0 · Source§

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 TryFrom<u8> for SignalNum

type Error = TryFromPrimitiveError<SignalNum>

The type returned in the event of a conversion error.

fn try_from(number: u8) -> Result<Self, TryFromPrimitiveError<Self>>

Performs the conversion.

impl TryFromPrimitive for SignalNum

const NAME: &'static str = "SignalNum"

type Primitive = u8

type Error = TryFromPrimitiveError<SignalNum>

fn try_from_primitive( number: Self::Primitive, ) -> Result<Self, TryFromPrimitiveError<Self>>

impl Copy for SignalNum

impl Eq for SignalNum

impl StructuralPartialEq for SignalNum

Auto Trait Implementations§

impl Freeze for SignalNum

impl RefUnwindSafe for SignalNum

impl Send for SignalNum

impl Sync for SignalNum

impl Unpin for SignalNum

impl UnwindSafe for SignalNum

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.