github.com/tickoalcantara12/micro/v3@v3.0.0-20221007104245-9d75b9bcbab9/service/server/mucp/rpc_util.go (about)

     1  // Copyright 2020 Asim Aslam
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     https://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  // Original source: github.com/micro/go-micro/v3/server/mucp/rpc_util.go
    16  
    17  package mucp
    18  
    19  import (
    20  	"sync"
    21  )
    22  
    23  // waitgroup for global management of connections
    24  type waitGroup struct {
    25  	// local waitgroup
    26  	lg sync.WaitGroup
    27  	// global waitgroup
    28  	gg *sync.WaitGroup
    29  }
    30  
    31  func (w *waitGroup) Add(i int) {
    32  	w.lg.Add(i)
    33  	if w.gg != nil {
    34  		w.gg.Add(i)
    35  	}
    36  }
    37  
    38  func (w *waitGroup) Done() {
    39  	w.lg.Done()
    40  	if w.gg != nil {
    41  		w.gg.Done()
    42  	}
    43  }
    44  
    45  func (w *waitGroup) Wait() {
    46  	// only wait on local group
    47  	w.lg.Wait()
    48  }