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// 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 && go1.8 && !go1.21 && !goexperiment.staticlockranking
// +build amd64,go1.8,!go1.21,!goexperiment.staticlockranking
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)
}
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