// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
syntax = "proto2";
option optimize_for = LITE_RUNTIME;
option java_package = "org.chromium.components.metrics";
option java_outer_classname = "HistogramEventProtos";
package metrics;
// Histogram-collected 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. As of M51, when the value of this field
// would be 0, the field will be omitted instead.
optional int64 sum = 2;
// The per-bucket data.
// Next tag: 5
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 number of entries in this bucket. As of M51, when the value of this
// field would be 1, the field will be omitted instead.
optional int64 count = 4 [default = 1];
}
repeated Bucket bucket = 3;
}