signal

Documentation

Overview

Package signal provides methods for handling POSIX signals

Index

• Constants
• func GetByCode(code int) (syscall.Signal, error)
• func GetByName(name string) (syscall.Signal, error)
• func Send(pid int, signal syscall.Signal) error
• type Handlers
  • func (h Handlers) Track()
  • func (h Handlers) TrackAsync()

Examples

• Handlers.Track
• Handlers.TrackAsync

Constants

const (
	ABRT   = syscall.SIGABRT
	ALRM   = syscall.SIGALRM
	BUS    = syscall.SIGBUS
	CHLD   = syscall.SIGCHLD
	CONT   = syscall.SIGCONT
	FPE    = syscall.SIGFPE
	HUP    = syscall.SIGHUP
	ILL    = syscall.SIGILL
	INT    = syscall.SIGINT
	IO     = syscall.SIGIO
	IOT    = syscall.SIGIOT
	KILL   = syscall.SIGKILL
	PIPE   = syscall.SIGPIPE
	PROF   = syscall.SIGPROF
	QUIT   = syscall.SIGQUIT
	SEGV   = syscall.SIGSEGV
	STOP   = syscall.SIGSTOP
	SYS    = syscall.SIGSYS
	TERM   = syscall.SIGTERM
	TRAP   = syscall.SIGTRAP
	TSTP   = syscall.SIGTSTP
	TTIN   = syscall.SIGTTIN
	TTOU   = syscall.SIGTTOU
	URG    = syscall.SIGURG
	USR1   = syscall.SIGUSR1
	USR2   = syscall.SIGUSR2
	VTALRM = syscall.SIGVTALRM
	WINCH  = syscall.SIGWINCH
	XCPU   = syscall.SIGXCPU
	XFSZ   = syscall.SIGXFSZ
)

Signal codes

Functions

func GetByCode

func GetByCode(code int) (syscall.Signal, error)

GetByCode returns signal with given code

func GetByName

func GetByName(name string) (syscall.Signal, error)

GetByName returns signal with given name

func Send

func Send(pid int, signal syscall.Signal) error

Send sends given signal to process

Types

type Handlers

type Handlers map[os.Signal]func()

Handlers is map signal->handler

func (Handlers) Track

func (h Handlers) Track()

Track catches signal and executes handler for this signal

Example

hupHandler := func() {
	fmt.Println("Got HUP signal")
}

usr1Handler := func() {
	fmt.Println("Got USR1 signal")
}

Handlers{
	HUP:  hupHandler,
	USR1: usr1Handler,
}.Track()

func (Handlers) TrackAsync

func (h Handlers) TrackAsync()

TrackAsync catches signal and executes async handler for this signal

Example

hupHandler := func() {
	fmt.Println("Got HUP signal")
}

usr1Handler := func() {
	fmt.Println("Got USR1 signal")
}

Handlers{
	HUP:  hupHandler,
	USR1: usr1Handler,
}.TrackAsync()

time.Sleep(time.Hour)