1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
base / metrics / record_histogram_checker.h [blame]
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_METRICS_RECORD_HISTOGRAM_CHECKER_H_
#define BASE_METRICS_RECORD_HISTOGRAM_CHECKER_H_
#include <stdint.h>
#include "base/base_export.h"
namespace base {
// RecordHistogramChecker provides an interface for checking whether
// the given histogram should be recorded.
class BASE_EXPORT RecordHistogramChecker {
public:
virtual ~RecordHistogramChecker() = default;
// Returns true iff the given histogram should be recorded.
// This method may be called on any thread, so it should not mutate any state.
// |histogram_hash| corresponds to the result of HashMetricNameAs32Bits().
virtual bool ShouldRecord(uint32_t histogram_hash) const = 0;
};
} // namespace base
#endif // BASE_METRICS_RECORD_HISTOGRAM_CHECKER_H_