gtimer

Documentation

Overview

Package gtimer implements Hierarchical Timing Wheel for interval/delayed jobs running and management.

This package is designed for management for millions of timing jobs. The differences between gtimer and gcron are as follows:

1. package gcron is implemented based on package gtimer.
2. gtimer is designed for high performance and for millions of timing jobs.
3. gcron supports configuration pattern grammar like linux crontab, which is more manually readable.
4. gtimer's benchmark OP is measured in nanoseconds, and gcron's benchmark OP is measured in microseconds.

ALSO VERY NOTE the common delay of the timer: https://github.com/golang/go/issues/14410

Example (Add)

package main

import (
	"fmt"
	"time"

	"github.com/gogf/gf/os/gtimer"
)

func main() {
	now := time.Now()
	interval := 1400 * time.Millisecond
	gtimer.Add(interval, func() {
		fmt.Println(time.Now(), time.Duration(time.Now().UnixNano()-now.UnixNano()))
		now = time.Now()
	})

	select {}
}

Index

• Constants
• func DelayAdd(delay time.Duration, interval time.Duration, job JobFunc)
• func DelayAddEntry(delay time.Duration, interval time.Duration, job JobFunc, singleton bool, ...)
• func DelayAddOnce(delay time.Duration, interval time.Duration, job JobFunc)
• func DelayAddSingleton(delay time.Duration, interval time.Duration, job JobFunc)
• func DelayAddTimes(delay time.Duration, interval time.Duration, times int, job JobFunc)
• func Exit()
• func SetInterval(interval time.Duration, job JobFunc)
• func SetTimeout(delay time.Duration, job JobFunc)
• type Entry
  • func Add(interval time.Duration, job JobFunc) *Entry
  • func AddEntry(interval time.Duration, job JobFunc, singleton bool, times int, status int) *Entry
  • func AddOnce(interval time.Duration, job JobFunc) *Entry
  • func AddSingleton(interval time.Duration, job JobFunc) *Entry
  • func AddTimes(interval time.Duration, times int, job JobFunc) *Entry
  • func (entry *Entry) Close()
  • func (entry *Entry) IsSingleton() bool
  • func (entry *Entry) Reset()
  • func (entry *Entry) Run()
  • func (entry *Entry) SetSingleton(enabled bool)
  • func (entry *Entry) SetStatus(status int) int
  • func (entry *Entry) SetTimes(times int)
  • func (entry *Entry) Start()
  • func (entry *Entry) Status() int
  • func (entry *Entry) Stop()
• type JobFunc
• type Timer
  • func New(slot int, interval time.Duration, level ...int) *Timer
  • func (t *Timer) Add(interval time.Duration, job JobFunc) *Entry
  • func (t *Timer) AddEntry(interval time.Duration, job JobFunc, singleton bool, times int, status int) *Entry
  • func (t *Timer) AddOnce(interval time.Duration, job JobFunc) *Entry
  • func (t *Timer) AddSingleton(interval time.Duration, job JobFunc) *Entry
  • func (t *Timer) AddTimes(interval time.Duration, times int, job JobFunc) *Entry
  • func (t *Timer) Close()
  • func (t *Timer) DelayAdd(delay time.Duration, interval time.Duration, job JobFunc)
  • func (t *Timer) DelayAddEntry(delay time.Duration, interval time.Duration, job JobFunc, singleton bool, ...)
  • func (t *Timer) DelayAddOnce(delay time.Duration, interval time.Duration, job JobFunc)
  • func (t *Timer) DelayAddSingleton(delay time.Duration, interval time.Duration, job JobFunc)
  • func (t *Timer) DelayAddTimes(delay time.Duration, interval time.Duration, times int, job JobFunc)
  • func (t *Timer) Start()
  • func (t *Timer) Stop()

Examples

• Package (Add)

Constants

const (
	STATUS_READY   = 0  // Job is ready for running.
	STATUS_RUNNING = 1  // Job is already running.
	STATUS_STOPPED = 2  // Job is stopped.
	STATUS_RESET   = 3  // Job is reset.
	STATUS_CLOSED  = -1 // Job is closed and waiting to be deleted.

)

Functions

func DelayAdd

func DelayAdd(delay time.Duration, interval time.Duration, job JobFunc)

DelayAdd adds a timing job after delay of <interval> duration. Also see Add.

func DelayAddEntry

func DelayAddEntry(delay time.Duration, interval time.Duration, job JobFunc, singleton bool, times int, status int)

DelayAddEntry adds a timing job after delay of <interval> duration. Also see AddEntry.

func DelayAddOnce

func DelayAddOnce(delay time.Duration, interval time.Duration, job JobFunc)

DelayAddOnce adds a timing job after delay of <interval> duration. Also see AddOnce.

func DelayAddSingleton

func DelayAddSingleton(delay time.Duration, interval time.Duration, job JobFunc)

DelayAddSingleton adds a timing job after delay of <interval> duration. Also see AddSingleton.

func DelayAddTimes

func DelayAddTimes(delay time.Duration, interval time.Duration, times int, job JobFunc)

DelayAddTimes adds a timing job after delay of <interval> duration. Also see AddTimes.

func Exit

func Exit()

Exit is used in timing job internally, which exits and marks it closed from timer. The timing job will be automatically removed from timer later. It uses "panic-recover" mechanism internally implementing this feature, which is designed for simplification and convenience.

func SetInterval

func SetInterval(interval time.Duration, job JobFunc)

SetInterval runs the job every duration of <delay>. It is like the one in javascript.

func SetTimeout

func SetTimeout(delay time.Duration, job JobFunc)

SetTimeout runs the job once after duration of <delay>. It is like the one in javascript.

Types

type Entry

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

Entry is the timing job entry to wheel.

func Add

func Add(interval time.Duration, job JobFunc) *Entry

Add adds a timing job to the default timer, which runs in interval of <interval>.

func AddEntry

func AddEntry(interval time.Duration, job JobFunc, singleton bool, times int, status int) *Entry

AddEntry adds a timing job to the default timer with detailed parameters.

The parameter <interval> specifies the running interval of the job.

The parameter <singleton> specifies whether the job running in singleton mode. There's only one of the same job is allowed running when its a singleton mode job.

The parameter <times> specifies limit for the job running times, which means the job exits if its run times exceeds the <times>.

The parameter <status> specifies the job status when it's firstly added to the timer.

func AddOnce

func AddOnce(interval time.Duration, job JobFunc) *Entry

AddOnce is a convenience function for adding a job which only runs once and then exits.

func AddSingleton

func AddSingleton(interval time.Duration, job JobFunc) *Entry

AddSingleton is a convenience function for add singleton mode job.

func AddTimes

func AddTimes(interval time.Duration, times int, job JobFunc) *Entry

AddTimes is a convenience function for adding a job which is limited running times.

func (*Entry) Close

func (entry *Entry) Close()

Close closes the job, and then it will be removed from the timer.

func (*Entry) IsSingleton

func (entry *Entry) IsSingleton() bool

IsSingleton checks and returns whether the job in singleton mode.

func (*Entry) Reset

func (entry *Entry) Reset()

Reset reset the job.

func (*Entry) Run

func (entry *Entry) Run()

Run runs the job.

func (*Entry) SetSingleton

func (entry *Entry) SetSingleton(enabled bool)

SetSingleton sets the job singleton mode.

func (*Entry) SetStatus

func (entry *Entry) SetStatus(status int) int

SetStatus custom sets the status for the job.

func (*Entry) SetTimes

func (entry *Entry) SetTimes(times int)

SetTimes sets the limit running times for the job.

func (*Entry) Start

func (entry *Entry) Start()

Start starts the job.

func (*Entry) Status

func (entry *Entry) Status() int

Status returns the status of the job.

func (*Entry) Stop

func (entry *Entry) Stop()

Stop stops the job.

type JobFunc

type JobFunc = func()

JobFunc is the job function.

type Timer

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

Timer is a Hierarchical Timing Wheel manager for timing jobs.

func New

func New(slot int, interval time.Duration, level ...int) *Timer

New creates and returns a Hierarchical Timing Wheel designed timer. The parameter <interval> specifies the interval of the timer. The optional parameter <level> specifies the wheels count of the timer, which is gDEFAULT_WHEEL_LEVEL in default.

func (*Timer) Add

func (t *Timer) Add(interval time.Duration, job JobFunc) *Entry

Add adds a timing job to the timer, which runs in interval of <interval>.

func (*Timer) AddEntry

func (t *Timer) AddEntry(interval time.Duration, job JobFunc, singleton bool, times int, status int) *Entry

AddEntry adds a timing job to the timer with detailed parameters.

The parameter <interval> specifies the running interval of the job.

The parameter <singleton> specifies whether the job running in singleton mode. There's only one of the same job is allowed running when its a singleton mode job.

The parameter <times> specifies limit for the job running times, which means the job exits if its run times exceeds the <times>.

The parameter <status> specifies the job status when it's firstly added to the timer.

func (*Timer) AddOnce

func (t *Timer) AddOnce(interval time.Duration, job JobFunc) *Entry

AddOnce is a convenience function for adding a job which only runs once and then exits.

func (*Timer) AddSingleton

func (t *Timer) AddSingleton(interval time.Duration, job JobFunc) *Entry

AddSingleton is a convenience function for add singleton mode job.

func (*Timer) AddTimes

func (t *Timer) AddTimes(interval time.Duration, times int, job JobFunc) *Entry

AddTimes is a convenience function for adding a job which is limited running times.

func (*Timer) Close

func (t *Timer) Close()

Close closes the timer.

func (*Timer) DelayAdd

func (t *Timer) DelayAdd(delay time.Duration, interval time.Duration, job JobFunc)

DelayAdd adds a timing job after delay of <interval> duration. Also see Add.

func (*Timer) DelayAddEntry

func (t *Timer) DelayAddEntry(delay time.Duration, interval time.Duration, job JobFunc, singleton bool, times int, status int)

DelayAddEntry adds a timing job after delay of <interval> duration. Also see AddEntry.

func (*Timer) DelayAddOnce

func (t *Timer) DelayAddOnce(delay time.Duration, interval time.Duration, job JobFunc)

DelayAddOnce adds a timing job after delay of <interval> duration. Also see AddOnce.

func (*Timer) DelayAddSingleton

func (t *Timer) DelayAddSingleton(delay time.Duration, interval time.Duration, job JobFunc)

DelayAddSingleton adds a timing job after delay of <interval> duration. Also see AddSingleton.

func (*Timer) DelayAddTimes

func (t *Timer) DelayAddTimes(delay time.Duration, interval time.Duration, times int, job JobFunc)

DelayAddTimes adds a timing job after delay of <interval> duration. Also see AddTimes.

func (*Timer) Start

func (t *Timer) Start()

Start starts the timer.

func (*Timer) Stop

func (t *Timer) Stop()

Stop stops the timer.