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86ee89f73e
On a 32bit system, this reduces the allocation size of the flag down from 12 bytes to 8, and removes the need for a vtable (the extra 4 bytes are the vtable pointer). The downside is that this change makes the binary layout of the flag, less compatible with RefCountedObject<> based reference counting objects and thus we don't immediately get the benefits of identical COMDAT folding and subsequently there's a slight binary size increase. With wider use, the binary size benefits will come. Bug: none Change-Id: I04129771790a3258d6accaf0ab1258b7a798a55e Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/215681 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Commit-Queue: Tommi <tommi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33793}
131 lines
5 KiB
C++
131 lines
5 KiB
C++
/*
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* Copyright 2020 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef PC_CONNECTION_CONTEXT_H_
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#define PC_CONNECTION_CONTEXT_H_
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#include <memory>
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#include <string>
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#include "api/call/call_factory_interface.h"
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#include "api/media_stream_interface.h"
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#include "api/peer_connection_interface.h"
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#include "api/ref_counted_base.h"
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#include "api/scoped_refptr.h"
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#include "api/sequence_checker.h"
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#include "api/transport/sctp_transport_factory_interface.h"
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#include "api/transport/webrtc_key_value_config.h"
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#include "media/base/media_engine.h"
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#include "p2p/base/basic_packet_socket_factory.h"
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#include "pc/channel_manager.h"
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#include "rtc_base/checks.h"
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#include "rtc_base/network.h"
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#include "rtc_base/network_monitor_factory.h"
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#include "rtc_base/rtc_certificate_generator.h"
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#include "rtc_base/thread.h"
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#include "rtc_base/thread_annotations.h"
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namespace rtc {
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class BasicNetworkManager;
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class BasicPacketSocketFactory;
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} // namespace rtc
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namespace webrtc {
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class RtcEventLog;
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// This class contains resources needed by PeerConnection and associated
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// objects. A reference to this object is passed to each PeerConnection. The
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// methods on this object are assumed not to change the state in any way that
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// interferes with the operation of other PeerConnections.
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//
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// This class must be created and destroyed on the signaling thread.
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class ConnectionContext final
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: public rtc::RefCountedNonVirtual<ConnectionContext> {
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public:
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// Creates a ConnectionContext. May return null if initialization fails.
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// The Dependencies class allows simple management of all new dependencies
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// being added to the ConnectionContext.
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static rtc::scoped_refptr<ConnectionContext> Create(
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PeerConnectionFactoryDependencies* dependencies);
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// This class is not copyable or movable.
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ConnectionContext(const ConnectionContext&) = delete;
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ConnectionContext& operator=(const ConnectionContext&) = delete;
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// Functions called from PeerConnection and friends
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SctpTransportFactoryInterface* sctp_transport_factory() const {
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return sctp_factory_.get();
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}
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cricket::ChannelManager* channel_manager() const;
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rtc::Thread* signaling_thread() { return signaling_thread_; }
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const rtc::Thread* signaling_thread() const { return signaling_thread_; }
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rtc::Thread* worker_thread() { return worker_thread_; }
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const rtc::Thread* worker_thread() const { return worker_thread_; }
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rtc::Thread* network_thread() { return network_thread_; }
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const rtc::Thread* network_thread() const { return network_thread_; }
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const WebRtcKeyValueConfig& trials() const { return *trials_.get(); }
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// Accessors only used from the PeerConnectionFactory class
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rtc::BasicNetworkManager* default_network_manager() {
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RTC_DCHECK_RUN_ON(signaling_thread_);
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return default_network_manager_.get();
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}
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rtc::BasicPacketSocketFactory* default_socket_factory() {
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RTC_DCHECK_RUN_ON(signaling_thread_);
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return default_socket_factory_.get();
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}
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CallFactoryInterface* call_factory() {
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RTC_DCHECK_RUN_ON(worker_thread_);
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return call_factory_.get();
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}
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protected:
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explicit ConnectionContext(PeerConnectionFactoryDependencies* dependencies);
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friend class rtc::RefCountedNonVirtual<ConnectionContext>;
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~ConnectionContext();
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private:
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// The following three variables are used to communicate between the
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// constructor and the destructor, and are never exposed externally.
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bool wraps_current_thread_;
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// Note: Since owned_network_thread_ and owned_worker_thread_ are used
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// in the initialization of network_thread_ and worker_thread_, they
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// must be declared before them, so that they are initialized first.
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std::unique_ptr<rtc::Thread> owned_network_thread_
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RTC_GUARDED_BY(signaling_thread_);
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std::unique_ptr<rtc::Thread> owned_worker_thread_
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RTC_GUARDED_BY(signaling_thread_);
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rtc::Thread* const network_thread_;
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rtc::Thread* const worker_thread_;
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rtc::Thread* const signaling_thread_;
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// channel_manager is accessed both on signaling thread and worker thread.
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std::unique_ptr<cricket::ChannelManager> channel_manager_;
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std::unique_ptr<rtc::NetworkMonitorFactory> const network_monitor_factory_
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RTC_GUARDED_BY(signaling_thread_);
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std::unique_ptr<rtc::BasicNetworkManager> default_network_manager_
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RTC_GUARDED_BY(signaling_thread_);
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std::unique_ptr<webrtc::CallFactoryInterface> const call_factory_
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RTC_GUARDED_BY(worker_thread_);
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std::unique_ptr<rtc::BasicPacketSocketFactory> default_socket_factory_
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RTC_GUARDED_BY(signaling_thread_);
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std::unique_ptr<SctpTransportFactoryInterface> const sctp_factory_;
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// Accessed both on signaling thread and worker thread.
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std::unique_ptr<WebRtcKeyValueConfig> const trials_;
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};
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} // namespace webrtc
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#endif // PC_CONNECTION_CONTEXT_H_
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