RTCStatsCollector: Utilize network thread to minimize thread hops.

webrtc/p2p/base/transportcontroller.cc

 /*
  *  Copyright 2015 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 123 matching lines @@
 bool TransportController::SetLocalCertificate(
     const rtc::scoped_refptr<rtc::RTCCertificate>& certificate) {
   return network_thread_->Invoke<bool>(
       RTC_FROM_HERE, rtc::Bind(&TransportController::SetLocalCertificate_n,
                                this, certificate));
 }
 
 bool TransportController::GetLocalCertificate(
     const std::string& transport_name,
     rtc::scoped_refptr<rtc::RTCCertificate>* certificate) const {
+  if (network_thread_->IsCurrent()) {
+    return GetLocalCertificate_n(transport_name, certificate);
+  }
   return network_thread_->Invoke<bool>(
       RTC_FROM_HERE, rtc::Bind(&TransportController::GetLocalCertificate_n,
                                this, transport_name, certificate));
 }
 
 std::unique_ptr<rtc::SSLCertificate>
 TransportController::GetRemoteSSLCertificate(
     const std::string& transport_name) const {
+  if (network_thread_->IsCurrent()) {
+    return GetRemoteSSLCertificate_n(transport_name);
+  }
   return network_thread_->Invoke<std::unique_ptr<rtc::SSLCertificate>>(
       RTC_FROM_HERE, rtc::Bind(&TransportController::GetRemoteSSLCertificate_n,
                                this, transport_name));
 }
 
 bool TransportController::SetLocalTransportDescription(
     const std::string& transport_name,
     const TransportDescription& tdesc,
     ContentAction action,
     std::string* err) {
@@ skipping 37 matching lines @@
 
 bool TransportController::ReadyForRemoteCandidates(
     const std::string& transport_name) const {
   return network_thread_->Invoke<bool>(
       RTC_FROM_HERE, rtc::Bind(&TransportController::ReadyForRemoteCandidates_n,
                                this, transport_name));
 }
 
 bool TransportController::GetStats(const std::string& transport_name,
                                    TransportStats* stats) {
+  if (network_thread_->IsCurrent()) {
+    return GetStats_n(transport_name, stats);
+  }
   return network_thread_->Invoke<bool>(
       RTC_FROM_HERE,
       rtc::Bind(&TransportController::GetStats_n, this, transport_name, stats));
 }
 
 void TransportController::SetMetricsObserver(
     webrtc::MetricsObserverInterface* metrics_observer) {
   return network_thread_->Invoke<void>(
       RTC_FROM_HERE, rtc::Bind(&TransportController::SetMetricsObserver_n, this,
                                metrics_observer));
@@ skipping 641 matching lines @@
         RTC_FROM_HERE, this, MSG_ICEGATHERINGSTATE,
         new rtc::TypedMessageData<IceGatheringState>(new_gathering_state));
   }
 }
 
 void TransportController::OnDtlsHandshakeError(rtc::SSLHandshakeError error) {
   SignalDtlsHandshakeError(error);
 }
 
 }  // namespace cricket