process

Documentation

Overview

Package process 流程控制相关

Index

• Variables
• func SleepAbout1sTo2s()
• type Once
  • func NewCustomOnce(m sync.Locker) *Once
  • func NewOnce() *Once
  • func (o *Once) Do(f func())
  • func (o *Once) Reset()

Variables

var CronTab = cron.New()

CronTab 全局定时器

var GlobalInitMutex = func() (mu sync.Mutex) {
	mu.Lock()
	return
}()

GlobalInitMutex 在 init 时被冻结, main 初始化完成后解冻

Functions

func SleepAbout1sTo2s

func SleepAbout1sTo2s()

SleepAbout1sTo2s 随机阻塞等待 1 ~ 2s

Types

type Once

type Once struct {
	// contains filtered or unexported fields
}

Once is an object that will perform exactly one action.

A Once must not be copied after first use.

func NewCustomOnce

func NewCustomOnce(m sync.Locker) *Once

NewCustomOnce use a custom locker

func NewOnce

func NewOnce() *Once

NewOnce use sync.Mutex as its locker

func (*Once) Do

func (o *Once) Do(f func())

Do calls the function f if and only if Do is being called for the first time for this instance of Once. In other words, given

var once Once

if once.Do(f) is called multiple times, only the first call will invoke f, even if f has a different value in each invocation. A new instance of Once is required for each function to execute.

Do is intended for initialization that must be run exactly once. Since f is niladic, it may be necessary to use a function literal to capture the arguments to a function to be invoked by Do:

config.once.Do(func() { config.init(filename) })

Because no call to Do returns until the one call to f returns, if f causes Do to be called, it will deadlock.

If f panics, Do considers it to have returned; future calls of Do return without calling f.

func (*Once) Reset

func (o *Once) Reset()

Reset the done status as new one