chromium / chromium / src / 5a226fb2daed587c594a508fa9bf4c4df0a8e01b / . / third_party / metrics_proto / histogram_event.proto

// Copyright 2014 The Chromium Authors. All rights reserved. | |

// 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_outer_classname = "HistogramEventProtos"; | |

option java_package = "org.chromium.components.metrics"; | |

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. | |

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. 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; | |

} |