// active spin wait to wait for completion.
			runtime_procPin()
			if !CompareAndSwapPointer(&vp.typ, nil, unsafe.Pointer(&firstStoreInProgress)) {
				runtime_procUnpin()
				continue
			}
			// Complete first store.
			StorePointer(&vp.data, vlp.data)
			StorePointer(&vp.typ, vlp.typ)
			runtime_procUnpin()
			return
		}
		if typ == unsafe.Pointer(&firstStoreInProgress) {

// license that can be found in the LICENSE file.

package sync

// Export for testing.
var Runtime_Semacquire = runtime_Semacquire
var Runtime_Semrelease = runtime_Semrelease
var Runtime_procPin = runtime_procPin
var Runtime_procUnpin = runtime_procUnpin

// poolDequeue testing.
type PoolDequeue interface {
	PushHead(val any) bool
	PopHead() (any, bool)
	PopTail() (any, bool)
}

func NewPoolDequeue(n int) PoolDequeue {

// returns poolLocal pool for the P and the P's id.
// Caller must call runtime_procUnpin() when done with the pool.
func (p *Pool) pin() (*poolLocal, int) {
	// Check whether p is nil to get a panic.
	// Otherwise the nil dereference happens while the m is pinned,
	// causing a fatal error rather than a panic.
	if p == nil {
		panic("nil Pool")
	}

	pid := runtime_procPin()

	// between Put and Get calls.
	Runtime_procPin()
	p.Put("a")
	p.Put("b")
	if g := p.Get(); g != "a" {
		t.Fatalf("got %#v; want a", g)
	}
	if g := p.Get(); g != "b" {
		t.Fatalf("got %#v; want b", g)
	}
	if g := p.Get(); g != nil {
		t.Fatalf("got %#v; want nil", g)
	}
	Runtime_procUnpin()

	// Put in a large number of objects so they spill into
	// stealable space.

	gp.m.locks--
}

//go:linkname sync_runtime_procPin sync.runtime_procPin
//go:nosplit
func sync_runtime_procPin() int {
	return procPin()
}

//go:linkname sync_runtime_procUnpin sync.runtime_procUnpin
//go:nosplit
func sync_runtime_procUnpin() {
	procUnpin()
}

//go:linkname sync_atomic_runtime_procPin sync/atomic.runtime_procPin
//go:nosplit
func sync_atomic_runtime_procPin() int {