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47 lines
1.5 KiB
Go
47 lines
1.5 KiB
Go
// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package state
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import "runtime"
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// workers is a singleton pool of goroutines to run arbitrary tasks concurrently.
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var workers = newWorkerPool(16 * runtime.GOMAXPROCS(0))
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// workerPool is a set of goroutines that execute arbitrary tasks concurrently.
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type workerPool struct {
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tasks chan func()
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}
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// newWorkerPool creates the worker task channel and launches the goroutines.
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func newWorkerPool(queue int) *workerPool {
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pool := &workerPool{
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tasks: make(chan func(), queue),
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}
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for i := 0; i < runtime.GOMAXPROCS(0); i++ {
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go func() {
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for task := range pool.tasks {
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task()
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}
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}()
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}
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return pool
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}
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// Schedule inserts a new task into the worker pool.
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func (pool *workerPool) Schedule(fn func()) {
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pool.tasks <- fn
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}
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