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comparison: netwerk/wifi/nsWifiMonitor.cpp
netwerk/wifi/nsWifiMonitor.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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replaced
| -1:000000000000 | 0:970056256f41 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #include "nsCOMPtr.h" | |
| 6 #include "nsProxyRelease.h" | |
| 7 #include "nsComponentManagerUtils.h" | |
| 8 #include "nsServiceManagerUtils.h" | |
| 9 #include "nsThreadUtils.h" | |
| 10 #include "nsXPCOM.h" | |
| 11 #include "nsXPCOMCID.h" | |
| 12 #include "nsIObserver.h" | |
| 13 #include "nsIObserverService.h" | |
| 14 #include "nsWifiMonitor.h" | |
| 15 #include "nsWifiAccessPoint.h" | |
| 16 | |
| 17 #include "nsServiceManagerUtils.h" | |
| 18 #include "nsComponentManagerUtils.h" | |
| 19 #include "mozilla/Services.h" | |
| 20 | |
| 21 using namespace mozilla; | |
| 22 | |
| 23 #if defined(PR_LOGGING) | |
| 24 PRLogModuleInfo *gWifiMonitorLog; | |
| 25 #endif | |
| 26 | |
| 27 NS_IMPL_ISUPPORTS(nsWifiMonitor, | |
| 28 nsIRunnable, | |
| 29 nsIObserver, | |
| 30 nsIWifiMonitor) | |
| 31 | |
| 32 nsWifiMonitor::nsWifiMonitor() | |
| 33 : mKeepGoing(true) | |
| 34 , mReentrantMonitor("nsWifiMonitor.mReentrantMonitor") | |
| 35 { | |
| 36 #if defined(PR_LOGGING) | |
| 37 gWifiMonitorLog = PR_NewLogModule("WifiMonitor"); | |
| 38 #endif | |
| 39 | |
| 40 nsCOMPtr<nsIObserverService> obsSvc = mozilla::services::GetObserverService(); | |
| 41 if (obsSvc) | |
| 42 obsSvc->AddObserver(this, "xpcom-shutdown", false); | |
| 43 | |
| 44 LOG(("@@@@@ wifimonitor created\n")); | |
| 45 } | |
| 46 | |
| 47 nsWifiMonitor::~nsWifiMonitor() | |
| 48 { | |
| 49 } | |
| 50 | |
| 51 NS_IMETHODIMP | |
| 52 nsWifiMonitor::Observe(nsISupports *subject, const char *topic, | |
| 53 const char16_t *data) | |
| 54 { | |
| 55 if (!strcmp(topic, "xpcom-shutdown")) { | |
| 56 LOG(("Shutting down\n")); | |
| 57 mKeepGoing = false; | |
| 58 | |
| 59 ReentrantMonitorAutoEnter mon(mReentrantMonitor); | |
| 60 mon.Notify(); | |
| 61 } | |
| 62 return NS_OK; | |
| 63 } | |
| 64 | |
| 65 | |
| 66 NS_IMETHODIMP nsWifiMonitor::StartWatching(nsIWifiListener *aListener) | |
| 67 { | |
| 68 if (!aListener) | |
| 69 return NS_ERROR_NULL_POINTER; | |
| 70 | |
| 71 nsresult rv = NS_OK; | |
| 72 if (!mThread) { | |
| 73 rv = NS_NewThread(getter_AddRefs(mThread), this); | |
| 74 if (NS_FAILED(rv)) | |
| 75 return rv; | |
| 76 } | |
| 77 | |
| 78 ReentrantMonitorAutoEnter mon(mReentrantMonitor); | |
| 79 | |
| 80 mKeepGoing = true; | |
| 81 | |
| 82 mListeners.AppendElement(nsWifiListener(new nsMainThreadPtrHolder<nsIWifiListener>(aListener))); | |
| 83 | |
| 84 // tell ourselves that we have a new watcher. | |
| 85 mon.Notify(); | |
| 86 return NS_OK; | |
| 87 } | |
| 88 | |
| 89 NS_IMETHODIMP nsWifiMonitor::StopWatching(nsIWifiListener *aListener) | |
| 90 { | |
| 91 if (!aListener) | |
| 92 return NS_ERROR_NULL_POINTER; | |
| 93 | |
| 94 LOG(("removing listener\n")); | |
| 95 | |
| 96 ReentrantMonitorAutoEnter mon(mReentrantMonitor); | |
| 97 | |
| 98 for (uint32_t i = 0; i < mListeners.Length(); i++) { | |
| 99 | |
| 100 if (mListeners[i].mListener == aListener) { | |
| 101 mListeners.RemoveElementAt(i); | |
| 102 break; | |
| 103 } | |
| 104 } | |
| 105 | |
| 106 if (mListeners.Length() == 0) { | |
| 107 mKeepGoing = false; | |
| 108 mon.Notify(); | |
| 109 mThread = nullptr; | |
| 110 } | |
| 111 | |
| 112 return NS_OK; | |
| 113 } | |
| 114 | |
| 115 typedef nsTArray<nsMainThreadPtrHandle<nsIWifiListener> > WifiListenerArray; | |
| 116 | |
| 117 class nsPassErrorToWifiListeners MOZ_FINAL : public nsIRunnable | |
| 118 { | |
| 119 public: | |
| 120 NS_DECL_THREADSAFE_ISUPPORTS | |
| 121 NS_DECL_NSIRUNNABLE | |
| 122 | |
| 123 nsPassErrorToWifiListeners(nsAutoPtr<WifiListenerArray> aListeners, | |
| 124 nsresult aResult) | |
| 125 : mListeners(aListeners), | |
| 126 mResult(aResult) | |
| 127 {} | |
| 128 | |
| 129 private: | |
| 130 nsAutoPtr<WifiListenerArray> mListeners; | |
| 131 nsresult mResult; | |
| 132 }; | |
| 133 | |
| 134 NS_IMPL_ISUPPORTS(nsPassErrorToWifiListeners, | |
| 135 nsIRunnable) | |
| 136 | |
| 137 NS_IMETHODIMP nsPassErrorToWifiListeners::Run() | |
| 138 { | |
| 139 LOG(("About to send error to the wifi listeners\n")); | |
| 140 for (size_t i = 0; i < mListeners->Length(); i++) { | |
| 141 (*mListeners)[i]->OnError(mResult); | |
| 142 } | |
| 143 return NS_OK; | |
| 144 } | |
| 145 | |
| 146 NS_IMETHODIMP nsWifiMonitor::Run() | |
| 147 { | |
| 148 LOG(("@@@@@ wifi monitor run called\n")); | |
| 149 | |
| 150 PR_SetCurrentThreadName("Wifi Monitor"); | |
| 151 | |
| 152 nsresult rv = DoScan(); | |
| 153 | |
| 154 if (mKeepGoing && NS_FAILED(rv)) { | |
| 155 nsAutoPtr<WifiListenerArray> currentListeners( | |
| 156 new WifiListenerArray(mListeners.Length())); | |
| 157 if (!currentListeners) | |
| 158 return NS_ERROR_OUT_OF_MEMORY; | |
| 159 | |
| 160 for (uint32_t i = 0; i < mListeners.Length(); i++) | |
| 161 currentListeners->AppendElement(mListeners[i].mListener); | |
| 162 | |
| 163 nsCOMPtr<nsIThread> thread = do_GetMainThread(); | |
| 164 if (!thread) | |
| 165 return NS_ERROR_UNEXPECTED; | |
| 166 | |
| 167 nsCOMPtr<nsIRunnable> runnable(new nsPassErrorToWifiListeners(currentListeners, rv)); | |
| 168 if (!runnable) | |
| 169 return NS_ERROR_OUT_OF_MEMORY; | |
| 170 | |
| 171 thread->Dispatch(runnable, NS_DISPATCH_SYNC); | |
| 172 } | |
| 173 | |
| 174 return NS_OK; | |
| 175 } | |
| 176 | |
| 177 class nsCallWifiListeners MOZ_FINAL : public nsIRunnable | |
| 178 { | |
| 179 public: | |
| 180 NS_DECL_THREADSAFE_ISUPPORTS | |
| 181 NS_DECL_NSIRUNNABLE | |
| 182 | |
| 183 nsCallWifiListeners(nsAutoPtr<WifiListenerArray> aListeners, | |
| 184 nsAutoPtr<nsTArray<nsIWifiAccessPoint*> > aAccessPoints) | |
| 185 : mListeners(aListeners), | |
| 186 mAccessPoints(aAccessPoints) | |
| 187 {} | |
| 188 | |
| 189 private: | |
| 190 nsAutoPtr<WifiListenerArray> mListeners; | |
| 191 nsAutoPtr<nsTArray<nsIWifiAccessPoint*> > mAccessPoints; | |
| 192 }; | |
| 193 | |
| 194 NS_IMPL_ISUPPORTS(nsCallWifiListeners, | |
| 195 nsIRunnable) | |
| 196 | |
| 197 NS_IMETHODIMP nsCallWifiListeners::Run() | |
| 198 { | |
| 199 LOG(("About to send data to the wifi listeners\n")); | |
| 200 for (size_t i = 0; i < mListeners->Length(); i++) { | |
| 201 (*mListeners)[i]->OnChange(mAccessPoints->Elements(), mAccessPoints->Length()); | |
| 202 } | |
| 203 return NS_OK; | |
| 204 } | |
| 205 | |
| 206 nsresult | |
| 207 nsWifiMonitor::CallWifiListeners(const nsCOMArray<nsWifiAccessPoint> &aAccessPoints, | |
| 208 bool aAccessPointsChanged) | |
| 209 { | |
| 210 nsAutoPtr<WifiListenerArray> currentListeners( | |
| 211 new WifiListenerArray(mListeners.Length())); | |
| 212 if (!currentListeners) | |
| 213 return NS_ERROR_OUT_OF_MEMORY; | |
| 214 | |
| 215 { | |
| 216 ReentrantMonitorAutoEnter mon(mReentrantMonitor); | |
| 217 | |
| 218 for (uint32_t i = 0; i < mListeners.Length(); i++) { | |
| 219 if (!mListeners[i].mHasSentData || aAccessPointsChanged) { | |
| 220 mListeners[i].mHasSentData = true; | |
| 221 currentListeners->AppendElement(mListeners[i].mListener); | |
| 222 } | |
| 223 } | |
| 224 } | |
| 225 | |
| 226 if (currentListeners->Length() > 0) | |
| 227 { | |
| 228 uint32_t resultCount = aAccessPoints.Count(); | |
| 229 nsAutoPtr<nsTArray<nsIWifiAccessPoint*> > accessPoints( | |
| 230 new nsTArray<nsIWifiAccessPoint *>(resultCount)); | |
| 231 if (!accessPoints) | |
| 232 return NS_ERROR_OUT_OF_MEMORY; | |
| 233 | |
| 234 for (uint32_t i = 0; i < resultCount; i++) | |
| 235 accessPoints->AppendElement(aAccessPoints[i]); | |
| 236 | |
| 237 nsCOMPtr<nsIThread> thread = do_GetMainThread(); | |
| 238 if (!thread) | |
| 239 return NS_ERROR_UNEXPECTED; | |
| 240 | |
| 241 nsCOMPtr<nsIRunnable> runnable( | |
| 242 new nsCallWifiListeners(currentListeners, accessPoints)); | |
| 243 if (!runnable) | |
| 244 return NS_ERROR_OUT_OF_MEMORY; | |
| 245 | |
| 246 thread->Dispatch(runnable, NS_DISPATCH_SYNC); | |
| 247 } | |
| 248 | |
| 249 return NS_OK; | |
| 250 } |
