mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-11 02:56:06 +00:00
266 lines
7.0 KiB
C++
266 lines
7.0 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsCOMPtr.h"
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#include "nsProxyRelease.h"
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#include "nsComponentManagerUtils.h"
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#include "nsServiceManagerUtils.h"
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#include "nsThreadUtils.h"
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#include "nsXPCOM.h"
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#include "nsXPCOMCID.h"
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#include "nsIObserver.h"
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#include "nsIObserverService.h"
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#include "nsWifiMonitor.h"
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#include "nsWifiAccessPoint.h"
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#include "nsServiceManagerUtils.h"
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#include "nsComponentManagerUtils.h"
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#include "mozilla/Services.h"
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using namespace mozilla;
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LazyLogModule gWifiMonitorLog("WifiMonitor");
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NS_IMPL_ISUPPORTS(nsWifiMonitor,
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nsIRunnable,
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nsIObserver,
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nsIWifiMonitor)
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nsWifiMonitor::nsWifiMonitor()
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: mKeepGoing(true)
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, mThreadComplete(false)
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, mReentrantMonitor("nsWifiMonitor.mReentrantMonitor")
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{
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nsCOMPtr<nsIObserverService> obsSvc = mozilla::services::GetObserverService();
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if (obsSvc)
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obsSvc->AddObserver(this, "xpcom-shutdown", false);
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LOG(("@@@@@ wifimonitor created\n"));
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}
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nsWifiMonitor::~nsWifiMonitor()
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{
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}
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NS_IMETHODIMP
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nsWifiMonitor::Observe(nsISupports *subject, const char *topic,
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const char16_t *data)
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{
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if (!strcmp(topic, "xpcom-shutdown")) {
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LOG(("Shutting down\n"));
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ReentrantMonitorAutoEnter mon(mReentrantMonitor);
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mKeepGoing = false;
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mon.Notify();
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mThread = nullptr;
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsWifiMonitor::StartWatching(nsIWifiListener *aListener)
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{
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LOG(("nsWifiMonitor::StartWatching %p thread %p listener %p\n",
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this, mThread.get(), aListener));
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MOZ_ASSERT(NS_IsMainThread());
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if (!aListener)
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return NS_ERROR_NULL_POINTER;
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if (!mKeepGoing) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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nsresult rv = NS_OK;
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ReentrantMonitorAutoEnter mon(mReentrantMonitor);
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if (mThreadComplete) {
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// generally there is just one thread for the lifetime of the service,
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// but if DoScan returns with an error before shutdown (i.e. !mKeepGoing)
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// then we will respawn the thread.
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LOG(("nsWifiMonitor::StartWatching %p restarting thread\n", this));
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mThreadComplete = false;
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mThread = nullptr;
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}
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if (!mThread) {
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rv = NS_NewThread(getter_AddRefs(mThread), this);
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if (NS_FAILED(rv))
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return rv;
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}
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mListeners.AppendElement(nsWifiListener(new nsMainThreadPtrHolder<nsIWifiListener>(aListener)));
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// tell ourselves that we have a new watcher.
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mon.Notify();
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return NS_OK;
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}
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NS_IMETHODIMP nsWifiMonitor::StopWatching(nsIWifiListener *aListener)
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{
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LOG(("nsWifiMonitor::StopWatching %p thread %p listener %p\n",
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this, mThread.get(), aListener));
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MOZ_ASSERT(NS_IsMainThread());
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if (!aListener)
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return NS_ERROR_NULL_POINTER;
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ReentrantMonitorAutoEnter mon(mReentrantMonitor);
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for (uint32_t i = 0; i < mListeners.Length(); i++) {
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if (mListeners[i].mListener == aListener) {
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mListeners.RemoveElementAt(i);
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break;
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}
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}
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return NS_OK;
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}
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typedef nsTArray<nsMainThreadPtrHandle<nsIWifiListener> > WifiListenerArray;
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class nsPassErrorToWifiListeners final : public nsIRunnable
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{
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIRUNNABLE
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nsPassErrorToWifiListeners(nsAutoPtr<WifiListenerArray> aListeners,
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nsresult aResult)
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: mListeners(aListeners),
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mResult(aResult)
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{}
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private:
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~nsPassErrorToWifiListeners() {}
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nsAutoPtr<WifiListenerArray> mListeners;
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nsresult mResult;
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};
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NS_IMPL_ISUPPORTS(nsPassErrorToWifiListeners,
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nsIRunnable)
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NS_IMETHODIMP nsPassErrorToWifiListeners::Run()
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{
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LOG(("About to send error to the wifi listeners\n"));
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for (size_t i = 0; i < mListeners->Length(); i++) {
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(*mListeners)[i]->OnError(mResult);
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsWifiMonitor::Run()
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{
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LOG(("@@@@@ wifi monitor run called\n"));
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PR_SetCurrentThreadName("Wifi Monitor");
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nsresult rv = DoScan();
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LOG(("@@@@@ wifi monitor run::doscan complete %x\n", rv));
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nsAutoPtr<WifiListenerArray> currentListeners;
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bool doError = false;
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{
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ReentrantMonitorAutoEnter mon(mReentrantMonitor);
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if (mKeepGoing && NS_FAILED(rv)) {
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doError = true;
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currentListeners = new WifiListenerArray(mListeners.Length());
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for (uint32_t i = 0; i < mListeners.Length(); i++)
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currentListeners->AppendElement(mListeners[i].mListener);
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}
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mThreadComplete = true;
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}
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if (doError) {
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nsCOMPtr<nsIThread> thread = do_GetMainThread();
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if (!thread)
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return NS_ERROR_UNEXPECTED;
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nsCOMPtr<nsIRunnable> runnable(new nsPassErrorToWifiListeners(currentListeners, rv));
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if (!runnable)
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return NS_ERROR_OUT_OF_MEMORY;
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thread->Dispatch(runnable, NS_DISPATCH_SYNC);
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}
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LOG(("@@@@@ wifi monitor run complete\n"));
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return NS_OK;
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}
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class nsCallWifiListeners final : public nsIRunnable
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{
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIRUNNABLE
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nsCallWifiListeners(nsAutoPtr<WifiListenerArray> aListeners,
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nsAutoPtr<nsTArray<nsIWifiAccessPoint*> > aAccessPoints)
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: mListeners(aListeners),
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mAccessPoints(aAccessPoints)
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{}
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private:
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~nsCallWifiListeners() {}
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nsAutoPtr<WifiListenerArray> mListeners;
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nsAutoPtr<nsTArray<nsIWifiAccessPoint*> > mAccessPoints;
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};
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NS_IMPL_ISUPPORTS(nsCallWifiListeners,
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nsIRunnable)
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NS_IMETHODIMP nsCallWifiListeners::Run()
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{
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LOG(("About to send data to the wifi listeners\n"));
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for (size_t i = 0; i < mListeners->Length(); i++) {
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(*mListeners)[i]->OnChange(mAccessPoints->Elements(), mAccessPoints->Length());
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}
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return NS_OK;
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}
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nsresult
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nsWifiMonitor::CallWifiListeners(const nsCOMArray<nsWifiAccessPoint> &aAccessPoints,
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bool aAccessPointsChanged)
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{
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nsAutoPtr<WifiListenerArray> currentListeners;
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{
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ReentrantMonitorAutoEnter mon(mReentrantMonitor);
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currentListeners = new WifiListenerArray(mListeners.Length());
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for (uint32_t i = 0; i < mListeners.Length(); i++) {
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if (!mListeners[i].mHasSentData || aAccessPointsChanged) {
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mListeners[i].mHasSentData = true;
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currentListeners->AppendElement(mListeners[i].mListener);
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}
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}
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}
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if (currentListeners->Length() > 0)
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{
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uint32_t resultCount = aAccessPoints.Count();
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nsAutoPtr<nsTArray<nsIWifiAccessPoint*> > accessPoints(
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new nsTArray<nsIWifiAccessPoint *>(resultCount));
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if (!accessPoints)
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return NS_ERROR_OUT_OF_MEMORY;
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for (uint32_t i = 0; i < resultCount; i++)
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accessPoints->AppendElement(aAccessPoints[i]);
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nsCOMPtr<nsIThread> thread = do_GetMainThread();
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if (!thread)
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return NS_ERROR_UNEXPECTED;
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nsCOMPtr<nsIRunnable> runnable(
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new nsCallWifiListeners(currentListeners, accessPoints));
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if (!runnable)
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return NS_ERROR_OUT_OF_MEMORY;
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thread->Dispatch(runnable, NS_DISPATCH_SYNC);
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}
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return NS_OK;
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}
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