1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
// Copyright 2020 The gVisor Authors.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build amd64
package sync
import (
"sync/atomic"
)
const supportsWakeSuppression = true
// addrOfSpinning returns the address of runtime.sched.nmspinning.
func addrOfSpinning() *int32
// nmspinning caches addrOfSpinning.
var nmspinning = addrOfSpinning()
//go:nosplit
func preGoReadyWakeSuppression() {
atomic.AddInt32(nmspinning, 1)
}
//go:nosplit
func postGoReadyWakeSuppression() {
atomic.AddInt32(nmspinning, -1)
}
|
