mirror of
https://github.com/rclone/rclone
synced 2024-11-27 05:23:40 +01:00
32 lines
624 B
Go
32 lines
624 B
Go
// Tokens for controlling concurrency
|
|
|
|
package pacer
|
|
|
|
// TokenDispenser is for controlling concurrency
|
|
type TokenDispenser struct {
|
|
tokens chan struct{}
|
|
}
|
|
|
|
// NewTokenDispenser makes a pool of n tokens
|
|
func NewTokenDispenser(n int) *TokenDispenser {
|
|
td := &TokenDispenser{
|
|
tokens: make(chan struct{}, n),
|
|
}
|
|
// Fill up the upload tokens
|
|
for i := 0; i < n; i++ {
|
|
td.tokens <- struct{}{}
|
|
}
|
|
return td
|
|
}
|
|
|
|
// Get gets a token from the pool - don't forget to return it with Put
|
|
func (td *TokenDispenser) Get() {
|
|
<-td.tokens
|
|
return
|
|
}
|
|
|
|
// Put returns a token
|
|
func (td *TokenDispenser) Put() {
|
|
td.tokens <- struct{}{}
|
|
}
|