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pools.go
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pools.go
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/*
Copyright 2023 Milan Suk
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package main
import (
"errors"
"sync"
)
type PoolBlocks struct {
lock sync.Mutex
items [][]byte
}
func NewPoolBlocks() *PoolBlocks {
var self PoolBlocks
return &self
}
func (pool *PoolBlocks) Num() int {
pool.lock.Lock()
defer pool.lock.Unlock()
return len(pool.items)
}
func (pool *PoolBlocks) Add(item []byte) {
pool.lock.Lock()
defer pool.lock.Unlock()
pool.items = append(pool.items, item)
}
func (pool *PoolBlocks) Get() ([]byte, error) {
pool.lock.Lock()
defer pool.lock.Unlock()
if len(pool.items) == 0 {
return nil, errors.New("PoolBlocks is empty")
}
ret := pool.items[0]
pool.items = pool.items[1:] //remove
return ret, nil
}
type PoolTxns struct {
lock sync.Mutex
items [][]byte
}
func NewPoolTxns() *PoolTxns {
var self PoolTxns
return &self
}
func (pool *PoolTxns) Num() int {
pool.lock.Lock()
defer pool.lock.Unlock()
return len(pool.items)
}
func (pool *PoolTxns) Add(item []byte) {
pool.lock.Lock()
defer pool.lock.Unlock()
pool.items = append(pool.items, item)
}
func (pool *PoolTxns) Get() ([]byte, error) {
pool.lock.Lock()
defer pool.lock.Unlock()
if len(pool.items) == 0 {
return nil, errors.New("PoolTxns is empty")
}
ret := pool.items[0]
pool.items = pool.items[1:] //remove
return ret, nil
}