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// SPDX-License-Identifier: GPL-3.0-or-later
package scrape
import "sync"
type throttledCaller struct {
limit chan struct{}
wg sync.WaitGroup
}
func newThrottledCaller(limit int) *throttledCaller {
if limit <= 0 {
panic("limit must be > 0")
}
return &throttledCaller{limit: make(chan struct{}, limit)}
}
func (t *throttledCaller) call(job func()) {
t.wg.Add(1)
go func() {
defer t.wg.Done()
t.limit <- struct{}{}
defer func() {
<-t.limit
}()
job()
}()
}
func (t *throttledCaller) wait() {
t.wg.Wait()
}
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