// 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. #ifndef NET_LOG_TRACE_NET_LOG_OBSERVER_H_ #define NET_LOG_TRACE_NET_LOG_OBSERVER_H_ #include "base/memory/raw_ptr.h" #include "base/memory/weak_ptr.h" #include "base/trace_event/trace_log.h" #include "net/base/net_export.h" #include "net/log/net_log.h" namespace net { // TraceNetLogObserver watches for TraceLog enable, and sends NetLog // events to TraceLog if it is enabled. class NET_EXPORT TraceNetLogObserver : public NetLog::ThreadSafeObserver, public base::trace_event::TraceLog::AsyncEnabledStateObserver { public: TraceNetLogObserver(); TraceNetLogObserver(const TraceNetLogObserver&) = delete; TraceNetLogObserver& operator=(const TraceNetLogObserver&) = delete; ~TraceNetLogObserver() override; // net::NetLog::ThreadSafeObserver implementation: void OnAddEntry(const NetLogEntry& entry) override; // Start to watch for TraceLog enable and disable events. // This can't be called if already watching for events. // Watches NetLog only when tracing is enabled. void WatchForTraceStart(NetLog* net_log); // Stop watching for TraceLog enable and disable events. // If WatchForTraceStart is called, this must be called before // TraceNetLogObserver is destroyed. void StopWatchForTraceStart(); // base::trace_event::TraceLog::EnabledStateChangedObserver implementation: void OnTraceLogEnabled() override; void OnTraceLogDisabled() override; private: raw_ptr net_log_to_watch_ = nullptr; base::WeakPtrFactory weak_factory_{this}; }; } // namespace net #endif // NET_LOG_TRACE_NET_LOG_OBSERVER_H_