| // Copyright 2017 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. |
| |
| #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. |
| virtual bool ShouldRecord(uint64_t histogram_hash) const = 0; |
| }; |
| |
| } // namespace base |
| |
| #endif // BASE_METRICS_RECORD_HISTOGRAM_CHECKER_H_ |