71 lines
1.4 KiB
Go
71 lines
1.4 KiB
Go
package safe
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import (
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"log"
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"runtime/debug"
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"sync"
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)
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type routine struct {
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goroutine func(chan bool)
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stop chan bool
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}
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// Pool creates a pool of go routines
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type Pool struct {
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routines []routine
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waitGroup sync.WaitGroup
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lock sync.Mutex
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}
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// Go starts a recoverable goroutine, and can be stopped with stop chan
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func (p *Pool) Go(goroutine func(stop chan bool)) {
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p.lock.Lock()
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newRoutine := routine{
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goroutine: goroutine,
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stop: make(chan bool, 1),
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}
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p.routines = append(p.routines, newRoutine)
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p.waitGroup.Add(1)
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Go(func() {
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goroutine(newRoutine.stop)
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p.waitGroup.Done()
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})
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p.lock.Unlock()
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}
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// Stop stops all started routines, waiting for their termination
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func (p *Pool) Stop() {
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p.lock.Lock()
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for _, routine := range p.routines {
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routine.stop <- true
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}
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p.waitGroup.Wait()
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for _, routine := range p.routines {
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close(routine.stop)
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}
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p.lock.Unlock()
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}
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// Go starts a recoverable goroutine
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func Go(goroutine func()) {
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GoWithRecover(goroutine, defaultRecoverGoroutine)
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}
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// GoWithRecover starts a recoverable goroutine using given customRecover() function
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func GoWithRecover(goroutine func(), customRecover func(err interface{})) {
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go func() {
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defer func() {
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if err := recover(); err != nil {
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customRecover(err)
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}
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}()
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goroutine()
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}()
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}
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func defaultRecoverGoroutine(err interface{}) {
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log.Println(err)
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debug.PrintStack()
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}
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