blob: 382506375b9f99eb389ea0d439efa290f2ee20e3 [file] [log] [blame]
* Copyright (C) 2015 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
// Histogram-collected metrics.
syntax = "proto2";
option optimize_for = LITE_RUNTIME;
option java_outer_classname = "HistogramEventProtos";
option java_package = "org.chromium.components.metrics";
package metrics;
// Next tag: 4
message HistogramEventProto {
// The name of the histogram, hashed.
optional fixed64 name_hash = 1;
// The sum of all the sample values.
// Together with the total count of the sample values, this allows us to
// compute the average value. The count of all sample values is just the sum
// of the counts of all the buckets.
optional int64 sum = 2;
// The per-bucket data.
message Bucket {
// Each bucket's range is bounded by min <= x < max.
// It is valid to omit one of these two fields in a bucket, but not both.
// If the min field is omitted, its value is assumed to be equal to max - 1.
// If the max field is omitted, its value is assumed to be equal to the next
// bucket's min value (possibly computed per above). The last bucket in a
// histogram should always include the max field.
optional int64 min = 1;
optional int64 max = 2;
// The bucket's index in the list of buckets, sorted in ascending order.
// This field was intended to provide extra redundancy to detect corrupted
// records, but was never used. As of M31, it is no longer sent by Chrome
// clients to reduce the UMA upload size.
optional int32 bucket_index = 3 [deprecated = true];
// The number of entries in this bucket.
optional int64 count = 4;
repeated Bucket bucket = 3;