//
//go:linkname readMetricNames runtime/metrics_test.runtime_readMetricNames
func readMetricNames() []string {
	metricsLock()
	initMetrics()
	n := len(metrics)
	metricsUnlock()

	list := make([]string, 0, n)

	metricsLock()
	for name := range metrics {
		list = append(list, name)
	}
	metricsUnlock()

	return list
}

// readMetrics is the implementation of runtime/metrics.Read.
//

		// the stack allocator and adjust metrics between there and here.
		readMetricsLocked(samplesp, len, cap)

		// Undo the donation.
		getg().racectx = 0
	})
	metricsUnlock()

	startTheWorld(stw)
}

var DoubleCheckReadMemStats = &doubleCheckReadMemStats

// ReadMemStatsSlow returns both the runtime-computed MemStats and
// MemStats accumulated by scanning the heap.

	expected := &Metrics{}
	if !volumetest.MetricsEqualIgnoreTimestamp(actual, expected) {
		t.Errorf("Expected empty Metrics from uninitialized MetricsBlock, actual %v", *actual)
	}
	if err == nil {
		t.Errorf("Expected error when calling GetMetrics on uninitialized MetricsBlock, actual nil")
	}

	metrics = NewMetricsBlock("/nonexistent/device/node")
	actual, err = metrics.GetMetrics()