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77 lines
2.3 KiB
Go
77 lines
2.3 KiB
Go
// MIT License
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// Copyright (c) 2018 Andy Pan
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package ants
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import (
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"runtime"
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"time"
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)
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// goWorker is the actual executor who runs the tasks,
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// it starts a goroutine that accepts tasks and
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// performs function calls.
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type goWorker struct {
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// pool who owns this worker.
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pool *Pool
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// task is a job should be done.
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task chan func()
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// recycleTime will be updated when putting a worker back into queue.
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recycleTime time.Time
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}
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// run starts a goroutine to repeat the process
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// that performs the function calls.
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func (w *goWorker) run() {
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w.pool.addRunning(1)
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go func() {
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defer func() {
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w.pool.addRunning(-1)
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w.pool.workerCache.Put(w)
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if p := recover(); p != nil {
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if ph := w.pool.options.PanicHandler; ph != nil {
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ph(p)
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} else {
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w.pool.options.Logger.Printf("worker exits from a panic: %v\n", p)
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var buf [4096]byte
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n := runtime.Stack(buf[:], false)
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w.pool.options.Logger.Printf("worker exits from panic: %s\n", string(buf[:n]))
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}
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}
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// Call Signal() here in case there are goroutines waiting for available workers.
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w.pool.cond.Signal()
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}()
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for f := range w.task {
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if f == nil {
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return
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}
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f()
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if ok := w.pool.revertWorker(w); !ok {
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return
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}
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}
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}()
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}
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