third_party/perfetto/protos/perfetto/trace/track_event/chrome_histogram_sample.proto

/*
 * Copyright (C) 2019 The Android Open Source Project
 *
 * 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.
 */

syntax = "proto2";

package perfetto.protos;

message HistogramName {
  optional uint64 iid = 1;
  optional string name = 2;
}

// An individual histogram sample logged via Chrome's UMA metrics system.
message ChromeHistogramSample {
  // MD5 hash of the metric name. Either |name_hash| or |name|/|name_iid| or
  // both must be present.
  optional uint64 name_hash = 1;
  optional string name = 2;
  optional int64 sample = 3;
  // Interned HistogramName. Only one of |name|, |name_iid| can be set.
  optional uint64 name_iid = 4;
}