github.com/metacubex/gvisor@v0.0.0-20240320004321-933faba989ec/pkg/sentry/kernel/aio.go (about)

     1  // Copyright 2020 The gVisor Authors.
     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  //     http://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  package kernel
    16  
    17  import (
    18  	"github.com/metacubex/gvisor/pkg/context"
    19  )
    20  
    21  // AIOCallback is an function that does asynchronous I/O on behalf of a task.
    22  type AIOCallback func(context.Context)
    23  
    24  // QueueAIO queues an AIOCallback which will be run asynchronously.
    25  func (t *Task) QueueAIO(cb AIOCallback) {
    26  	ctx := t.AsyncContext()
    27  	wg := &t.TaskSet().aioGoroutines
    28  	wg.Add(1)
    29  	go func() {
    30  		cb(ctx)
    31  		wg.Done()
    32  	}()
    33  }