82 lines
2.1 KiB
Go
82 lines
2.1 KiB
Go
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// Copyright 2020 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package kernel
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import (
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"time"
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"gvisor.dev/gvisor/pkg/context"
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"gvisor.dev/gvisor/pkg/log"
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)
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// AIOCallback is an function that does asynchronous I/O on behalf of a task.
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type AIOCallback func(context.Context)
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// QueueAIO queues an AIOCallback which will be run asynchronously.
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func (t *Task) QueueAIO(cb AIOCallback) {
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ctx := taskAsyncContext{t: t}
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wg := &t.TaskSet().aioGoroutines
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wg.Add(1)
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go func() {
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cb(ctx)
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wg.Done()
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}()
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}
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type taskAsyncContext struct {
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context.NoopSleeper
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t *Task
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}
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// Debugf implements log.Logger.Debugf.
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func (ctx taskAsyncContext) Debugf(format string, v ...interface{}) {
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ctx.t.Debugf(format, v...)
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}
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// Infof implements log.Logger.Infof.
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func (ctx taskAsyncContext) Infof(format string, v ...interface{}) {
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ctx.t.Infof(format, v...)
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}
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// Warningf implements log.Logger.Warningf.
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func (ctx taskAsyncContext) Warningf(format string, v ...interface{}) {
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ctx.t.Warningf(format, v...)
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}
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// IsLogging implements log.Logger.IsLogging.
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func (ctx taskAsyncContext) IsLogging(level log.Level) bool {
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return ctx.t.IsLogging(level)
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}
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// Deadline implements context.Context.Deadline.
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func (ctx taskAsyncContext) Deadline() (time.Time, bool) {
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return ctx.t.Deadline()
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}
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// Done implements context.Context.Done.
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func (ctx taskAsyncContext) Done() <-chan struct{} {
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return ctx.t.Done()
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}
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// Err implements context.Context.Err.
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func (ctx taskAsyncContext) Err() error {
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return ctx.t.Err()
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}
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// Value implements context.Context.Value.
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func (ctx taskAsyncContext) Value(key interface{}) interface{} {
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return ctx.t.Value(key)
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}
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