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52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
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// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_LOG_TRACE_NET_LOG_OBSERVER_H_
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#define NET_LOG_TRACE_NET_LOG_OBSERVER_H_
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#include "base/macros.h"
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#include "base/memory/weak_ptr.h"
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#include "base/trace_event/trace_log.h"
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#include "net/base/net_export.h"
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#include "net/log/net_log.h"
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namespace net {
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// TraceNetLogObserver watches for TraceLog enable, and sends NetLog
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// events to TraceLog if it is enabled.
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class NET_EXPORT TraceNetLogObserver
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: public NetLog::ThreadSafeObserver,
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public base::trace_event::TraceLog::AsyncEnabledStateObserver {
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public:
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TraceNetLogObserver();
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~TraceNetLogObserver() override;
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// net::NetLog::ThreadSafeObserver implementation:
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void OnAddEntry(const NetLogEntry& entry) override;
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// Start to watch for TraceLog enable and disable events.
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// This can't be called if already watching for events.
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// Watches NetLog only when tracing is enabled.
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void WatchForTraceStart(NetLog* net_log);
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// Stop watching for TraceLog enable and disable events.
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// If WatchForTraceStart is called, this must be called before
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// TraceNetLogObserver is destroyed.
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void StopWatchForTraceStart();
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// base::trace_event::TraceLog::EnabledStateChangedObserver implementation:
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void OnTraceLogEnabled() override;
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void OnTraceLogDisabled() override;
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private:
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NetLog* net_log_to_watch_;
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base::WeakPtrFactory<TraceNetLogObserver> weak_factory_;
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DISALLOW_COPY_AND_ASSIGN(TraceNetLogObserver);
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};
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} // namespace net
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#endif // NET_LOG_TRACE_NET_LOG_OBSERVER_H_
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