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- // Copyright 2016 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_TRACE_EVENT_EVENT_NAME_FILTER_H_
- #define BASE_TRACE_EVENT_EVENT_NAME_FILTER_H_
- #include <memory>
- #include <string>
- #include <unordered_set>
- #include "base/base_export.h"
- #include "base/trace_event/trace_event_filter.h"
- namespace base {
- namespace trace_event {
- class TraceEvent;
- // Filters trace events by checking the full name against an allowlist.
- // The current implementation is quite simple and dumb and just uses a
- // hashtable which requires char* to std::string conversion. It could be smarter
- // and use a bloom filter trie. However, today this is used too rarely to
- // justify that cost.
- class BASE_EXPORT EventNameFilter : public TraceEventFilter {
- public:
- using EventNamesAllowlist = std::unordered_set<std::string>;
- static const char kName[];
- EventNameFilter(std::unique_ptr<EventNamesAllowlist>);
- EventNameFilter(const EventNameFilter&) = delete;
- EventNameFilter& operator=(const EventNameFilter&) = delete;
- ~EventNameFilter() override;
- // TraceEventFilter implementation.
- bool FilterTraceEvent(const TraceEvent&) const override;
- private:
- std::unique_ptr<const EventNamesAllowlist> event_names_allowlist_;
- };
- } // namespace trace_event
- } // namespace base
- #endif // BASE_TRACE_EVENT_EVENT_NAME_FILTER_H_
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