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