feat: export the internal package sync (#349)

.github/release-drafter.yml

@@ -44,7 +44,7 @@ autolabeler:
     title:
       - /fix/i
       - /bug/i
-      - /patch/i
+      - /resolve/i
   - label: docs
     files:
       - '*.md'
@@ -60,6 +60,15 @@ autolabeler:
       - /update/i
       - /remove/i
       - /delete/i
+  - label: optimization
+    title:
+      - /opt:/i
+      - /refactor/i
+      - /optimize/i
+      - /improve/i
+      - /update/i
+      - /remove/i
+      - /delete/i
   - label: new feature
     title:
       - /feat:/i
@@ -75,7 +84,7 @@ autolabeler:
   - label: chores
     title:
       - /chore/i
-      - /\bmisc\b/i
+      - /misc/i
       - /cleanup/i
       - /clean up/i
   - label: major

.github/workflows/test.yml

@@ -87,7 +87,7 @@ jobs:
         run: go test -v -race -coverprofile="codecov.report" -covermode=atomic
 
       - name: Upload code coverage report to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           file: ./codecov.report
           flags: unittests

README.md

@@ -7,6 +7,7 @@
 <a title="Release" target="_blank" href="https://github.com/panjf2000/ants/releases"><img src="https://img.shields.io/github/v/release/panjf2000/ants.svg?color=161823&style=flat-square&logo=smartthings" /></a>
 <a title="Tag" target="_blank" href="https://github.com/panjf2000/ants/tags"><img src="https://img.shields.io/github/v/tag/panjf2000/ants?color=%23ff8936&logo=fitbit&style=flat-square" /></a>
 <br/>
+<a title="Minimum Go Version" target="_blank" href="https://github.com/panjf2000/gnet"><img src="https://img.shields.io/badge/go-%3E%3D1.16-30dff3?style=flat-square&logo=go" /></a>
 <a title="Go Report Card" target="_blank" href="https://goreportcard.com/report/github.com/panjf2000/ants"><img src="https://goreportcard.com/badge/github.com/panjf2000/ants?style=flat-square" /></a>
 <a title="Doc for ants" target="_blank" href="https://pkg.go.dev/github.com/panjf2000/ants/v2?tab=doc"><img src="https://img.shields.io/badge/go.dev-doc-007d9c?style=flat-square&logo=read-the-docs" /></a>
 <a title="Mentioned in Awesome Go" target="_blank" href="https://github.com/avelino/awesome-go#goroutines"><img src="https://awesome.re/mentioned-badge-flat.svg" /></a>

README_ZH.md

@@ -7,6 +7,7 @@
 <a title="Release" target="_blank" href="https://github.com/panjf2000/ants/releases"><img src="https://img.shields.io/github/v/release/panjf2000/ants.svg?color=161823&style=flat-square&logo=smartthings" /></a>
 <a title="Tag" target="_blank" href="https://github.com/panjf2000/ants/tags"><img src="https://img.shields.io/github/v/tag/panjf2000/ants?color=%23ff8936&logo=fitbit&style=flat-square" /></a>
 <br/>
+<a title="Minimum Go Version" target="_blank" href="https://github.com/panjf2000/gnet"><img src="https://img.shields.io/badge/go-%3E%3D1.16-30dff3?style=flat-square&logo=go" /></a>
 <a title="Go Report Card" target="_blank" href="https://goreportcard.com/report/github.com/panjf2000/ants"><img src="https://goreportcard.com/badge/github.com/panjf2000/ants?style=flat-square" /></a>
 <a title="Doc for ants" target="_blank" href="https://pkg.go.dev/github.com/panjf2000/ants/v2?tab=doc"><img src="https://img.shields.io/badge/go.dev-doc-007d9c?style=flat-square&logo=read-the-docs" /></a>
 <a title="Mentioned in Awesome Go" target="_blank" href="https://github.com/avelino/awesome-go#goroutines"><img src="https://awesome.re/mentioned-badge-flat.svg" /></a>

ants.go

@@ -20,6 +20,13 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 
+// Package ants implements an efficient and reliable goroutine pool for Go.
+//
+// With ants, Go applications are able to limit the number of active goroutines,
+// recycle goroutines efficiently, and reduce the memory footprint significantly.
+// Package ants is extremely useful in the scenarios where a massive number of
+// goroutines are created and destroyed frequently, such as highly-concurrent
+// batch processing systems, HTTP servers, services of asynchronous tasks, etc.
 package ants
 
 import (

pkg/sync/spinlock_test.go

@@ -15,7 +15,7 @@ import (
 Benchmark result for three types of locks:
 	goos: darwin
 	goarch: arm64
-	pkg: github.com/panjf2000/ants/v2/internal/sync
+	pkg: github.com/panjf2000/ants/v2/pkg/sync
 	BenchmarkMutex-10              	10452573	       111.1 ns/op	       0 B/op	       0 allocs/op
 	BenchmarkSpinLock-10           	58953211	        18.01 ns/op	       0 B/op	       0 allocs/op
 	BenchmarkBackOffSpinLock-10    	100000000	        10.81 ns/op	       0 B/op	       0 allocs/op

pkg/sync/sync.go

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2025. Andy Pan. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+// Package sync provides some handy implementations for synchronization access.
+// At the moment, there is only an implementation of spin-lock.
+package sync

pool.go

@@ -28,7 +28,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	syncx "github.com/panjf2000/ants/v2/internal/sync"
+	syncx "github.com/panjf2000/ants/v2/pkg/sync"
 )
 
 type poolCommon struct {

pool_func.go

@@ -28,7 +28,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	syncx "github.com/panjf2000/ants/v2/internal/sync"
+	syncx "github.com/panjf2000/ants/v2/pkg/sync"
 )
 
 // PoolWithFunc accepts the tasks and process them concurrently,