gxruntime

Documentation

Overview

2017-10-24 16:20 Package gxruntime encapsulates some runtime functions goroutine pool ref: https://github.com/pingcap/tidb/blob/1592c7bc2873346565ab15ecfbc22749a775e014/util/goroutine_pool/gp.go

Index

• Constants
• Variables
• func GoID() int
• type Pool
  • func NewGoroutinePool(idleTimeout time.Duration) *Pool
  • func (p *Pool) Close()
  • func (p *Pool) Go(f func()) error
  • func (p *Pool) IsClosed() bool

Constants

const (
	PoolInit = iota
	PoolStarting
	PoolGcing
	PoolClosing
	PoolClosed
)

const (
	OnceLoopGoroutineNum = 30
)

Variables

var (
	ErrGoroutinePoolClosed = fmt.Errorf("GoroutinePool has been closed.")
)

Functions

func GoID

func GoID() int

Types

type Pool

type Pool struct {
	sync.Mutex
	// contains filtered or unexported fields
}

Pool is a struct to represent goroutine pool.

func NewGoroutinePool

func NewGoroutinePool(idleTimeout time.Duration) *Pool

New returns a new *Pool object. DEPRECATED: https://github.com/pingcap/tidb/pull/7564 After Go1.11, goroutine pool is harmful.

The test result is as follows: go test -test.bench Benchmark goos: darwin goarch: amd64 pkg: github.com/AlexStocks/goext/runtime BenchmarkGoPool-4 3000000 619 ns/op BenchmarkGo-4 5000000 319 ns/op BenchmarkMorestackPool-4 3000000 534 ns/op BenchmarkMoreStack-4 2000000 667 ns/op

func (*Pool) Close

func (p *Pool) Close()

func (*Pool) Go

func (p *Pool) Go(f func()) error

Go works like go func(), but goroutines are pooled for reusing. This strategy can avoid runtime.morestack, because pooled goroutine is already enlarged.

func (*Pool) IsClosed

func (p *Pool) IsClosed() bool

check whether the pool has been closed.