add new function g.Go (gogf#2943)

frame/g/g_func.go

@@ -17,6 +17,20 @@ import (
 	"github.com/gogf/gf/v2/util/gutil"
 )
 
+type (
+	Func        = gutil.Func        // Func is the function which contains context parameter.
+	RecoverFunc = gutil.RecoverFunc // RecoverFunc is the panic recover function which contains context parameter.
+)
+
+// Go creates a new asynchronous goroutine function with specified recover function.
+//
+// The parameter `recoverFunc` is called when any panic during executing of `goroutineFunc`.
+// If `recoverFunc` is given nil, it ignores the panic from `goroutineFunc` and no panic will
+// throw to parent goroutine.
+func Go(ctx context.Context, goroutineFunc Func, recoverFunc RecoverFunc) {
+	gutil.Go(ctx, goroutineFunc, recoverFunc)
+}
+
 // NewVar returns a gvar.Var.
 func NewVar(i interface{}, safe ...bool) *Var {
 	return gvar.New(i, safe...)

frame/g/g_z_unit_test.go

@@ -9,8 +9,10 @@ package g_test
 import (
 	"context"
 	"os"
+	"sync"
 	"testing"
 
+	"github.com/gogf/gf/v2/container/garray"
 	"github.com/gogf/gf/v2/frame/g"
 	"github.com/gogf/gf/v2/test/gtest"
 	"github.com/gogf/gf/v2/util/gutil"
@@ -114,3 +116,19 @@ func Test_Object(t *testing.T) {
 		t.AssertNE(g.Validator(), nil)
 	})
 }
+
+func Test_Go(t *testing.T) {
+	gtest.C(t, func(t *gtest.T) {
+		var (
+			wg    = sync.WaitGroup{}
+			array = garray.NewArray(true)
+		)
+		wg.Add(1)
+		g.Go(context.Background(), func(ctx context.Context) {
+			defer wg.Done()
+			array.Append(1)
+		}, nil)
+		wg.Wait()
+		t.Assert(array.Len(), 1)
+	})
+}

os/grpool/grpool.go

@@ -13,8 +13,6 @@ import (
 
 	"github.com/gogf/gf/v2/container/glist"
 	"github.com/gogf/gf/v2/container/gtype"
-	"github.com/gogf/gf/v2/errors/gcode"
-	"github.com/gogf/gf/v2/errors/gerror"
 	"github.com/gogf/gf/v2/os/gtimer"
 	"github.com/gogf/gf/v2/util/grand"
 )
@@ -23,7 +21,7 @@ import (
 type Func func(ctx context.Context)
 
 // RecoverFunc is the pool runtime panic recover function which contains context parameter.
-type RecoverFunc func(ctx context.Context, err error)
+type RecoverFunc func(ctx context.Context, exception error)
 
 // Pool manages the goroutines using pool.
 type Pool struct {
@@ -33,161 +31,66 @@ type Pool struct {
 	closed *gtype.Bool // Is pool closed or not.
 }
 
+// localPoolItem is the job item storing in job list.
 type localPoolItem struct {
-	Ctx  context.Context
-	Func Func
+	Ctx  context.Context // Context.
+	Func Func            // Job function.
 }
 
 const (
-	minTimerDuration = 500 * time.Millisecond
-	maxTimerDuration = 1500 * time.Millisecond
+	minSupervisorTimerDuration = 500 * time.Millisecond
+	maxSupervisorTimerDuration = 1500 * time.Millisecond
 )
 
 // Default goroutine pool.
 var (
-	pool = New()
+	defaultPool = New()
 )
 
 // New creates and returns a new goroutine pool object.
 // The parameter `limit` is used to limit the max goroutine count,
 // which is not limited in default.
 func New(limit ...int) *Pool {
-	p := &Pool{
-		limit:  -1,
-		count:  gtype.NewInt(),
-		list:   glist.New(true),
-		closed: gtype.NewBool(),
-	}
+	var (
+		pool = &Pool{
+			limit:  -1,
+			count:  gtype.NewInt(),
+			list:   glist.New(true),
+			closed: gtype.NewBool(),
+		}
+		timerDuration = grand.D(
+			minSupervisorTimerDuration,
+			maxSupervisorTimerDuration,
+		)
+	)
 	if len(limit) > 0 && limit[0] > 0 {
-		p.limit = limit[0]
+		pool.limit = limit[0]
 	}
-	timerDuration := grand.D(minTimerDuration, maxTimerDuration)
-	gtimer.Add(context.Background(), timerDuration, p.supervisor)
-	return p
+	gtimer.Add(context.Background(), timerDuration, pool.supervisor)
+	return pool
 }
 
-// Add pushes a new job to the pool using default goroutine pool.
+// Add pushes a new job to the default goroutine pool.
 // The job will be executed asynchronously.
 func Add(ctx context.Context, f Func) error {
-	return pool.Add(ctx, f)
+	return defaultPool.Add(ctx, f)
 }
 
-// AddWithRecover pushes a new job to the pool with specified recover function.
+// AddWithRecover pushes a new job to the default pool with specified recover function.
+//
 // The optional `recoverFunc` is called when any panic during executing of `userFunc`.
 // If `recoverFunc` is not passed or given nil, it ignores the panic from `userFunc`.
 // The job will be executed asynchronously.
 func AddWithRecover(ctx context.Context, userFunc Func, recoverFunc RecoverFunc) error {
-	return pool.AddWithRecover(ctx, userFunc, recoverFunc)
+	return defaultPool.AddWithRecover(ctx, userFunc, recoverFunc)
 }
 
 // Size returns current goroutine count of default goroutine pool.
 func Size() int {
-	return pool.Size()
+	return defaultPool.Size()
 }
 
 // Jobs returns current job count of default goroutine pool.
 func Jobs() int {
-	return pool.Jobs()
-}
-
-// Add pushes a new job to the pool.
-// The job will be executed asynchronously.
-func (p *Pool) Add(ctx context.Context, f Func) error {
-	for p.closed.Val() {
-		return gerror.NewCode(
-			gcode.CodeInvalidOperation,
-			"goroutine pool is already closed",
-		)
-	}
-	p.list.PushFront(&localPoolItem{
-		Ctx:  ctx,
-		Func: f,
-	})
-	// Check and fork new worker.
-	p.checkAndFork()
-	return nil
-}
-
-// checkAndFork checks and creates a new goroutine worker.
-// Note that the worker dies if the job function panics and the job has no recover handling.
-func (p *Pool) checkAndFork() {
-	// Check whether fork new goroutine or not.
-	var n int
-	for {
-		n = p.count.Val()
-		if p.limit != -1 && n >= p.limit {
-			// No need fork new goroutine.
-			return
-		}
-		if p.count.Cas(n, n+1) {
-			// Use CAS to guarantee atomicity.
-			break
-		}
-	}
-	// Create job function in goroutine.
-	go func() {
-		defer p.count.Add(-1)
-
-		var (
-			listItem interface{}
-			poolItem *localPoolItem
-		)
-		for !p.closed.Val() {
-			listItem = p.list.PopBack()
-			if listItem == nil {
-				return
-			}
-			poolItem = listItem.(*localPoolItem)
-			poolItem.Func(poolItem.Ctx)
-		}
-	}()
-}
-
-// AddWithRecover pushes a new job to the pool with specified recover function.
-// The optional `recoverFunc` is called when any panic during executing of `userFunc`.
-// If `recoverFunc` is not passed or given nil, it ignores the panic from `userFunc`.
-// The job will be executed asynchronously.
-func (p *Pool) AddWithRecover(ctx context.Context, userFunc Func, recoverFunc RecoverFunc) error {
-	return p.Add(ctx, func(ctx context.Context) {
-		defer func() {
-			if exception := recover(); exception != nil {
-				if recoverFunc != nil {
-					if v, ok := exception.(error); ok && gerror.HasStack(v) {
-						recoverFunc(ctx, v)
-					} else {
-						recoverFunc(ctx, gerror.NewCodef(gcode.CodeInternalPanic, "%+v", exception))
-					}
-				}
-			}
-		}()
-		userFunc(ctx)
-	})
-}
-
-// Cap returns the capacity of the pool.
-// This capacity is defined when pool is created.
-// It returns -1 if there's no limit.
-func (p *Pool) Cap() int {
-	return p.limit
-}
-
-// Size returns current goroutine count of the pool.
-func (p *Pool) Size() int {
-	return p.count.Val()
-}
-
-// Jobs returns current job count of the pool.
-// Note that, it does not return worker/goroutine count but the job/task count.
-func (p *Pool) Jobs() int {
-	return p.list.Size()
-}
-
-// IsClosed returns if pool is closed.
-func (p *Pool) IsClosed() bool {
-	return p.closed.Val()
-}
-
-// Close closes the goroutine pool, which makes all goroutines exit.
-func (p *Pool) Close() {
-	p.closed.Set(true)
+	return defaultPool.Jobs()
 }

os/grpool/grpool_pool.go

@@ -0,0 +1,119 @@
+// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package grpool
+
+import (
+	"context"
+
+	"github.com/gogf/gf/v2/errors/gcode"
+	"github.com/gogf/gf/v2/errors/gerror"
+)
+
+// Add pushes a new job to the pool.
+// The job will be executed asynchronously.
+func (p *Pool) Add(ctx context.Context, f Func) error {
+	for p.closed.Val() {
+		return gerror.NewCode(
+			gcode.CodeInvalidOperation,
+			"goroutine defaultPool is already closed",
+		)
+	}
+	p.list.PushFront(&localPoolItem{
+		Ctx:  ctx,
+		Func: f,
+	})
+	// Check and fork new worker.
+	p.checkAndForkNewGoroutineWorker()
+	return nil
+}
+
+// AddWithRecover pushes a new job to the pool with specified recover function.
+//
+// The optional `recoverFunc` is called when any panic during executing of `userFunc`.
+// If `recoverFunc` is not passed or given nil, it ignores the panic from `userFunc`.
+// The job will be executed asynchronously.
+func (p *Pool) AddWithRecover(ctx context.Context, userFunc Func, recoverFunc RecoverFunc) error {
+	return p.Add(ctx, func(ctx context.Context) {
+		defer func() {
+			if exception := recover(); exception != nil {
+				if recoverFunc != nil {
+					if v, ok := exception.(error); ok && gerror.HasStack(v) {
+						recoverFunc(ctx, v)
+					} else {
+						recoverFunc(ctx, gerror.NewCodef(gcode.CodeInternalPanic, "%+v", exception))
+					}
+				}
+			}
+		}()
+		userFunc(ctx)
+	})
+}
+
+// Cap returns the capacity of the pool.
+// This capacity is defined when pool is created.
+// It returns -1 if there's no limit.
+func (p *Pool) Cap() int {
+	return p.limit
+}
+
+// Size returns current goroutine count of the pool.
+func (p *Pool) Size() int {
+	return p.count.Val()
+}
+
+// Jobs returns current job count of the pool.
+// Note that, it does not return worker/goroutine count but the job/task count.
+func (p *Pool) Jobs() int {
+	return p.list.Size()
+}
+
+// IsClosed returns if pool is closed.
+func (p *Pool) IsClosed() bool {
+	return p.closed.Val()
+}
+
+// Close closes the goroutine pool, which makes all goroutines exit.
+func (p *Pool) Close() {
+	p.closed.Set(true)
+}
+
+// checkAndForkNewGoroutineWorker checks and creates a new goroutine worker.
+// Note that the worker dies if the job function panics and the job has no recover handling.
+func (p *Pool) checkAndForkNewGoroutineWorker() {
+	// Check whether fork new goroutine or not.
+	var n int
+	for {
+		n = p.count.Val()
+		if p.limit != -1 && n >= p.limit {
+			// No need fork new goroutine.
+			return
+		}
+		if p.count.Cas(n, n+1) {
+			// Use CAS to guarantee atomicity.
+			break
+		}
+	}
+
+	// Create job function in goroutine.
+	go func() {
+		defer p.count.Add(-1)
+
+		var (
+			listItem interface{}
+			poolItem *localPoolItem
+		)
+		// Harding working, one by one, job never empty, worker never die.
+		for !p.closed.Val() {
+			listItem = p.list.PopBack()
+			if listItem == nil {
+				return
+			}
+			poolItem = listItem.(*localPoolItem)
+			poolItem.Func(poolItem.Ctx)
+		}
+	}()
+}

os/grpool/grpool_supervisor.go

@@ -14,7 +14,7 @@ import (
 
 // supervisor checks the job list and fork new worker goroutine to handle the job
 // if there are jobs but no workers in pool.
-func (p *Pool) supervisor(ctx context.Context) {
+func (p *Pool) supervisor(_ context.Context) {
 	if p.IsClosed() {
 		gtimer.Exit()
 	}
@@ -24,7 +24,7 @@ func (p *Pool) supervisor(ctx context.Context) {
 			number = p.limit
 		}
 		for i := 0; i < number; i++ {
-			p.checkAndFork()
+			p.checkAndForkNewGoroutineWorker()
 		}
 	}
 }