If you want to block when reading or writing, you must enable it:

```go
	rb := ringbuffer.New(1024).SetBlocking(true)
```

Enabling blocking will cause the ring buffer to behave like a buffered [io.Pipe](https://pkg.go.dev/io#Pipe).

Regular Reads will block until data is available, but not wait for a full buffer. 

		b.ReportAllocs()
		for i := 0; i < b.N; i++ {
			if want, got := 42, doOnceValue(); want != got {
				b.Fatalf("want %d, got %d", want, got)
			}
		}
	})
	b.Run("v=Global", func(b *testing.B) {
		b.ReportAllocs()
		for i := 0; i < b.N; i++ {
			if want, got := 42, onceValue(); want != got {
				b.Fatalf("want %d, got %d", want, got)
			}
		}
	})
	b.Run("v=Local", func(b *testing.B) {

	if h == nil {
		handlers.Unlock()
		return
	}
	delete(handlers.m, c)

	for n := 0; n < numSig; n++ {
		if h.want(n) {
			handlers.ref[n]--
			if handlers.ref[n] == 0 {
				disableSignal(n)
			}
		}
	}

	// Signals will no longer be delivered to the channel.
	// We want to avoid a race for a signal such as SIGINT:
	// it should be either delivered to the channel,

See the License for the specific language governing permissions and
limitations under the License.
*/

package options

import (
	"fmt"
	"time"

	"github.com/spf13/pflag"

	"k8s.io/apimachinery/pkg/util/wait"
	"k8s.io/apiserver/pkg/authorization/authorizer"
	"k8s.io/apiserver/pkg/authorization/authorizerfactory"
	"k8s.io/apiserver/pkg/authorization/path"
	"k8s.io/apiserver/pkg/authorization/union"
	"k8s.io/apiserver/pkg/server"

		obj       ObjectInfo
		want      lifecycle.Action
	}{
		{
			// with object locking
			ilm:       *deleteAllLc,
			retention: lock.Retention{LockEnabled: true},
			obj:       obj,
			want:      lifecycle.NoneAction,
		},
		{
			// without object locking
			ilm:       *deleteAllLc,
			retention: lock.Retention{},
			obj:       obj,
			want:      lifecycle.DeleteAllVersionsAction,
		},

		if !cache.WaitForCacheSync(stopCh, informer.HasSynced) {
			return false
		}
	}
	return true
}

func (f *informerFactory) Shutdown() {
	// Will return immediately if there is nothing to wait for.
	defer f.wg.Wait()

	f.lock.Lock()
	defer f.lock.Unlock()
	f.shuttingDown = true

	}
	if _, err := t0.Lookup("lhs").Clone(); err == nil {
		t.Error(`t0.Lookup("lhs").Clone(): got nil err want non-nil`)
	}

	// Execute t3.
	b.Reset()
	if err := t3.ExecuteTemplate(b, "a", "<i>*/"); err != nil {
		t.Fatal(err)
	}
	if got, want := b.String(), ` <style> ZgotmplZ </style> `; got != want {
		t.Errorf("t3: got %q want %q", got, want)
	}
}

	tg.creatingTemp(exe)
	tg.run("build", "-o", exe, tg.path("x.go"))
	fi, err := os.Stat(exe)
	if err != nil {
		t.Fatal(err)
	}
	got, want := fi.Mode(), cfi.Mode()
	if got == want {
		t.Logf("wrote x with mode %v", got)
	} else {
		t.Fatalf("wrote x with mode %v, wanted no 0077 bits (%v)", got, want)
	}
}

// TestTestInterrupt verifies the fix for issue #60203.
//
// If the whole process group for a 'go test' invocation receives

				t.Fatalf("Nested Range loads unexpected value, got %+v want %+v", v, value)
			}

			// We didn't keep 42 and a value into the map before, if somehow we loaded
			// a value from such a key, meaning there must be an internal bug regarding
			// nested range in the Map.
			if _, loaded := m.LoadOrStore(42, "dummy"); loaded {
				t.Fatalf("Nested Range loads unexpected value, want store a new value")
			}

		}()
		c, err := ln2.Accept()
		if err != nil {
			if perr := parseAcceptError(err); perr != nil {
				t.Error(perr)
			}
			t.Fatal(err)
		}
		c.Close()
		wg.Wait()
		if !reflect.DeepEqual(ln2.Addr(), addr) {
			t.Fatalf("got %#v; want %#v", ln2.Addr(), addr)
		}
	}
}

var filePacketConnTests = []struct {
	network string
}{
	{"udp"},
	{"unixgram"},
}