- fix bug send msg to closed channel.

business/jxutils/tasksch/task.go

@@ -98,7 +98,6 @@ func RunTask(taskName string, worker WorkFunc, resultHandler ResultHandlerFunc,
 				for {
 					select {
 					case <-task.quitChan:
-						chanRetVal = retVal
 						goto end
 					case job := <-task.taskChan:
 						if job == nil {
@@ -113,7 +112,6 @@ func RunTask(taskName string, worker WorkFunc, resultHandler ResultHandlerFunc,
 							} else {
 								chanRetVal = err
 								task.Cancel()
-								task.setStatus(TaskStatusFailed)
 							}
 						}
 					}
@@ -129,26 +127,41 @@ func RunTask(taskName string, worker WorkFunc, resultHandler ResultHandlerFunc,
 			task.taskChan <- nil
 		}
 
-		task.result = make([]interface{}, 0)
+		taskResult := make([]interface{}, 0)
+		var taskErr error
 		for i := 0; i < parallelCount; i++ {
 			result := <-task.subFinishChan
 			if err2, ok := result.(error); ok {
-				task.result = nil
+				taskResult = nil
-				task.err = err2
+				taskErr = err2
 				break
-			} else {
+			} else if result != nil {
 				resultList := result.([]interface{})
-				task.result = append(task.result, resultList...)
+				taskResult = append(taskResult, resultList...)
 			}
 		}
-		if task.GetStatus() != TaskStatusFailed {
+
+		task.locker.Lock()
+		if taskErr != nil { // 如果有错误，肯定就是失败了
+			task.Status = TaskStatusFailed
+		} else {
 			if len(task.taskChan) > 0 {
-				task.err = ErrTaskIsCanceled
+				taskErr = ErrTaskIsCanceled
-				task.setStatus(TaskStatusCanceled)
+				task.Status = TaskStatusCanceled
 			} else {
-				task.setStatus(TaskStatusFinished)
+				task.Status = TaskStatusFinished
 			}
 		}
+		task.err = taskErr
+		task.result = taskResult
+		task.TerminatedAt = time.Now()
+
+		task.locker.Unlock()
+
+		close(task.finishChan)
+		close(task.subFinishChan)
+		close(task.quitChan)
+
 		if resultHandler != nil {
 			resultHandler(taskName, task.result, task.err)
 		}
@@ -167,6 +180,9 @@ func (t *Task) GetResult(duration time.Duration) (retVal []interface{}, err erro
 	select {
 	case <-t.finishChan:
 		timer.Stop()
+		t.locker.RLock()
+		defer t.locker.RUnlock()
+
 		return t.result, t.err
 	case <-timer.C:
 	}
@@ -227,10 +243,4 @@ func (t *Task) setStatus(status int) {
 	defer t.locker.Unlock()
 
 	t.Status = status
-	if status >= TaskStatusEndBegin {
-		t.TerminatedAt = time.Now()
-		close(t.finishChan)
-		close(t.subFinishChan)
-		close(t.quitChan)
-	}
 }