Official Go implementation of the Ethereum protocol
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go-ethereum/vendor/github.com/uber/jaeger-lib/metrics/counter.go

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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package metrics
// Counter tracks the number of times an event has occurred
type Counter interface {
// Inc adds the given value to the counter.
Inc(int64)
}
// NullCounter counter that does nothing
var NullCounter Counter = nullCounter{}
type nullCounter struct{}
func (nullCounter) Inc(int64) {}