glean_core/traits/memory_distribution.rs
1// This Source Code Form is subject to the terms of the Mozilla Public
2// License, v. 2.0. If a copy of the MPL was not distributed with this
3// file, You can obtain one at https://mozilla.org/MPL/2.0/.
4
5use crate::metrics::DistributionData;
6use crate::{ErrorType, TestGetValue};
7
8/// A description for the
9/// [`MemoryDistributionMetric`](crate::metrics::MemoryDistributionMetric) type.
10///
11/// When changing this trait, make sure all the operations are
12/// implemented in the related type in `../metrics/`.
13pub trait MemoryDistribution: TestGetValue<DistributionData> {
14 /// Accumulates the provided sample in the metric.
15 ///
16 /// # Arguments
17 ///
18 /// * `sample` - The sample to be recorded by the metric. The sample is assumed to be in the
19 /// configured memory unit of the metric.
20 ///
21 /// ## Notes
22 ///
23 /// Values bigger than 1 Terabyte (2<sup>40</sup> bytes) are truncated
24 /// and an `ErrorType::InvalidValue` error is recorded.
25 fn accumulate(&self, sample: u64);
26
27 /// **Exported for test purposes.**
28 ///
29 /// Gets the number of recorded errors for the given error type.
30 ///
31 /// # Arguments
32 ///
33 /// * `error` - The type of error
34 ///
35 /// # Returns
36 ///
37 /// The number of errors recorded.
38 fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32;
39}