media/mtransport/transportlayer.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 // Original author: ekr@rtfm.com
   8 #include "logging.h"
   9 #include "transportflow.h"
  10 #include "transportlayer.h"
  11 #include "nsThreadUtils.h"
  12
  13 // Logging context
  14 namespace mozilla {
  15
  16 MOZ_MTLOG_MODULE("mtransport")
  17
  18 nsresult TransportLayer::Init() {
  19   if (state_ != TS_NONE)
  20     return state_ == TS_ERROR ? NS_ERROR_FAILURE : NS_OK;
  21
  22   nsresult rv = InitInternal();
  23
  24   if (!NS_SUCCEEDED(rv)) {
  25     state_ = TS_ERROR;
  26     return rv;
  27   }
  28   state_ = TS_INIT;
  29
  30   return NS_OK;
  31 }
  32
  33 void TransportLayer::Inserted(TransportFlow *flow, TransportLayer *downward) {
  34   downward_ = downward;
  35   flow_id_ = flow->id();
  36   MOZ_MTLOG(ML_DEBUG, LAYER_INFO << "Inserted: downward='" <<
  37     (downward ? downward->id(): "none") << "'");
  38
  39   WasInserted();
  40 }
  41
  42 void TransportLayer::SetState(State state, const char *file, unsigned line) {
  43   if (state != state_) {
  44     MOZ_MTLOG(state == TS_ERROR ? ML_ERROR : ML_DEBUG,
  45               file << ":" << line << ": " <<
  46               LAYER_INFO << "state " << state_ << "->" << state);
  47     state_ = state;
  48     SignalStateChange(this, state);
  49   }
  50 }
  51
  52 nsresult TransportLayer::RunOnThread(nsIRunnable *event) {
  53   if (target_) {
  54     nsIThread *thr;
  55
  56     DebugOnly<nsresult> rv = NS_GetCurrentThread(&thr);
  57     MOZ_ASSERT(NS_SUCCEEDED(rv));
  58
  59     if (target_ != thr) {
  60       return target_->Dispatch(event, NS_DISPATCH_SYNC);
  61     }
  62   }
  63
  64   return event->Run();
  65 }
  66
  67 }  // close namespace