return &Counter{name: name, file: &defaultFile}
}

// Inc adds 1 to the counter.
func (c *Counter) Inc() {
	c.Add(1)
}

// Add adds n to the counter. n cannot be negative, as counts cannot decrease.
func (c *Counter) Add(n int64) {
	debugPrintf("Add %q += %d", c.name, n)

	if n < 0 {
		panic("Counter.Add negative")
	}
	if n == 0 {
		return
	}

				}
			} else {
				// The package ID value stored in the counter array
				// has 1 added to it (so as to preclude the
				// possibility of a zero value ; see
				// runtime.addCovMeta), so subtract off 1 here to form
				// the real package ID.
				pkgId--
			}

			tcounters = rdCounters(counters, tcounters)
			if err := f(pkgId, funcId, tcounters); err != nil {
				return err
			}

	// FIXME: in theory either A) len(val.Counters) is zero, or B)
	// the two lengths are equal. Assert if not? Of course, we could
	// see odd stuff if there is source file skew.
	if *verbflag > 4 {
		fmt.Printf("visit pk=%d fid=%d len(counters)=%d\n", data.PkgIdx, data.FuncIdx, len(data.Counters))
	}
	if len(val.Counters) < len(data.Counters) {
		t := val.Counters
		val.Counters = mm.AllocateCounters(len(data.Counters))

// CounterFlavor describes how function and counters are
// stored/represented in the counter section of the file.
type CounterFlavor uint8

const (
	// "Raw" representation: all values (pkg ID, func ID, num counters,
	// and counters themselves) are stored as uint32's.
	CtrRaw CounterFlavor = iota + 1

	// "ULeb" representation: all values (pkg ID, func ID, num counters,
	// and counters themselves) are stored with ULEB128 encoding.

				// validate response
				if tc.err != nil {
					assert.Nil(t, counter)
					assert.ErrorContains(t, err, tc.err.Error())
				} else {
					assert.NotNil(t, counter)
					assert.NoError(t, err)
					assert.Equal(t, tc.counter.Name, counter.Name)
					assert.Equal(t, tc.counter.Packets, counter.Packets)
					assert.Equal(t, tc.counter.Bytes, counter.Bytes)
				}
			}
		})
	}
}

			}
			wroteNext = true
		} else {
			c.next.Store(next)
		}
		if f.counters.CompareAndSwap(head, c) {
			debugPrintf("registered %s %p\n", c.Name(), f.counters.Load())
			return
		}
		debugPrintf("register %s cas2 failed %p %p\n", c.Name(), f.counters.Load(), head)
	}
}

// invalidateCounters marks as invalid all the pointers
// held by f's counters and then refreshes them.
//

			continue
		}
		prog := findProgReport(x.Meta, report)
		for k, v := range x.Count {
			if counter.IsStackCounter(k) {
				// stack
				prog.Stacks[k] += int64(v)
			} else {
				// counter
				prog.Counters[k] += int64(v)
			}
			succeeded = true
			fok = true
		}
		if !fok {
			u.logger.Printf("no counters found in %s", f)
		}
	}
	if !succeeded {

	// which is the time used by the upload logic to determine whether counter
	// file data should be uploaded. Only counter files that have expired before
	// the start time are considered for upload.
	//
	// This field can be used to simulate a future upload that collects recently
	// modified counters.
	UploadStartTime time.Time

	// UploadURL, if set, overrides the URL used to receive uploaded reports. If

	for _, r := range registries {
		counter := atomic.NewInt32(0)
		clusterID := r.Cluster()
		if clusterID == "cluster1" {
			counter = registry1Counter
		}
		if clusterID == "cluster2" {
			counter = registry2Counter
		}
		ctrl.AppendServiceHandlerForCluster(clusterID, func(_, curr *model.Service, event model.Event) {
			counter.Add(1)
		})
		ctrl.AddRegistry(r)
	}

func setCounterStmt(f *File, counter string) string {
	return fmt.Sprintf("%s = 1", counter)
}

// incCounterStmt returns the expression: __count[23]++.
func incCounterStmt(f *File, counter string) string {
	return fmt.Sprintf("%s++", counter)
}

// atomicCounterStmt returns the expression: atomic.AddUint32(&__count[23], 1)
func atomicCounterStmt(f *File, counter string) string {