ReferenceQueue<Object> queue,
      PhantomReference<Object> frqReference) {
    this.queue = queue;

    this.finalizableReferenceClassReference = new WeakReference<>(finalizableReferenceClass);

    // Keep track of the FRQ that started us so we know when to stop.
    this.frqReference = frqReference;
  }

  /** Loops continuously, pulling references off the queue and cleaning them up. */

        // Then
        assertArrayEquals(testFileId, customRequest.getFileId(), "Custom implementation should store file ID correctly");
        assertEquals(1, customRequest.getSetCount(), "Should track set count correctly");
    }

			failOnErr(err)
			encoded, err := e.EncodeData(GlobalContext, testData[:])
			failOnErr(err)
			hash := xxhash.New()
			for i, data := range encoded {
				// Write index to keep track of sizes of each.
				_, err = hash.Write([]byte{byte(i)})
				failOnErr(err)
				_, err = hash.Write(data)
				failOnErr(err)
				got[conf] = map[ErasureAlgo]uint64{algo: hash.Sum64()}
			}

import org.gradle.api.tasks.SourceSet;
import org.gradle.api.tasks.SourceSetContainer;
import org.gradle.api.tasks.testing.Test;

import java.io.File;
import java.util.Map;

import static org.elasticsearch.gradle.util.FileUtils.mkdirs;
import static org.elasticsearch.gradle.util.GradleUtils.maybeConfigure;

/**
 * Applies commonly used settings to all Test tasks in the project
 */

    # Вернуть ошибку
    ...
```

Но используя `secrets.compare_digest()`, вы защитите код от атак типа «тайминговая атака» (атака по времени).

### Тайминговые атаки { #timing-attacks }

Что такое «тайминговая атака»?

Представим, что злоумышленники пытаются угадать имя пользователя и пароль.

И они отправляют запрос с именем пользователя `johndoe` и паролем `love123`.

// currentPathUpdater provides a lightweight update function for keeping track of
// current objects for each disk.
// Returns a function that can be used to update the current object
// and a function to call to when processing finished.
func (p *scannerMetrics) currentPathUpdater(disk, initial string) (update func(path string), done func()) {
	initialPtr := unsafe.Pointer(&initial)
	tracker := &currentPathTracker{
		name: &initialPtr,
	}

	return fmt.Sprintf("ReplicationLastMinute sz= %d, n=%d , dur=%d", t.Size, t.N, t.Total)
}

func (rl *ReplicationLastMinute) getTotal() AccElem {
	return rl.LastMinute.getTotal()
}

// ReplicationLastHour keeps track of replication counts over the last hour
type ReplicationLastHour struct {
	Totals  [60]AccElem
	LastMin int64
}

// Merge data of two ReplicationLastHour structure

這大致等同於：

```Python
if not (credentials.username == "stanleyjobson") or not (credentials.password == "swordfish"):
    # 回傳錯誤
    ...
```

但藉由使用 `secrets.compare_digest()`，可以防禦一種稱為「計時攻擊」的攻擊。

### 計時攻擊 { #timing-attacks }

什麼是「計時攻擊」呢？

想像有攻擊者在嘗試猜測使用者名稱與密碼。

他們送出一個帶有使用者名稱 `johndoe` 與密碼 `love123` 的請求。

接著，你的應用程式中的 Python 程式碼等同於：

```Python
if "johndoe" == "stanleyjobson" and "love123" == "swordfish":
    ...
```

	}
	send := func(entry metaCacheEntry) error {
		objReturned(entry.metadata)
		select {
		case <-ctx.Done():
			return ctx.Err()
		case out <- entry:
		}
		return nil
	}

	// Fast exit track to check if we are listing an object with
	// a trailing slash, this will avoid to list the object content.
	if HasSuffix(opts.BaseDir, SlashSeparator) {
		metadata, err := s.readMetadata(ctx, pathJoin(volumeDir,

		initialStackSnapShot.DetectLeak(t)
	}
}

// list of functions to be ignored from the stack trace.
// Leak detection is done when tests are run, should ignore the tests related functions,
// and other runtime functions while identifying leaks.
var ignoredStackFns = []string{
	"",
	// Below are the stacks ignored by the upstream leaktest code.
	"testing.Main(",
	"testing.tRunner(",
	"testing.tRunner(",