yaole
35 lines
716 B
Go
35 lines
716 B
Go
package internal
|
|
|
|
import "math/big"
|
|
|
|
const maxPoolCount = 1024
|
|
|
|
// bnPool implements a tiny cache of *big.Int objects that's used to reduce the
|
|
// number of allocations made during processing.
|
|
|
|
// TODO bnPool 必须在每个线程中一个。只有将SM2的操作定义为sm2对象的方法，在初始化对象的时候定义一个.
|
|
// 并且，该对象不能被多线程共享。
|
|
|
|
type bnPool struct {
|
|
bns []*big.Int
|
|
}
|
|
|
|
func (pool *bnPool) Get() *big.Int {
|
|
l := len(pool.bns)
|
|
if l > 0 {
|
|
bn := pool.bns[l-1]
|
|
pool.bns = pool.bns[:l-1]
|
|
return bn
|
|
}
|
|
return new(big.Int)
|
|
}
|
|
|
|
func (pool *bnPool) Put(bn *big.Int) {
|
|
pool.bns = append(pool.bns, bn)
|
|
|
|
}
|
|
|
|
func (pool *bnPool) Count() int {
|
|
return len(pool.bns)
|
|
}
|