Bug 1205266 - log network-change events on Mac. r=mcmanus

netwerk/system/mac/nsNetworkLinkService.mm

@@ -9,6 +9,7 @@
 #include "nsServiceManagerUtils.h"
 #include "nsString.h"
 #include "nsCRT.h"
+#include "mozilla/Logging.h"
 #include "mozilla/Preferences.h"
 
 #import <Cocoa/Cocoa.h>
@@ -18,6 +19,9 @@
 
 using namespace mozilla;
 
+static PRLogModuleInfo *gNotifyAddrLog = nullptr;
+#define LOG(args) MOZ_LOG(gNotifyAddrLog, mozilla::LogLevel::Debug, args)
+
 // If non-successful, extract the error code and return it.  This
 // error code dance is inspired by
 // http://developer.apple.com/technotes/tn/tn1145.html
@@ -121,6 +125,9 @@ nsNetworkLinkService::Init(void)
 {
     nsresult rv;
 
+    if (!gNotifyAddrLog)
+        gNotifyAddrLog = PR_NewLogModule("nsNotifyAddr");
+
     nsCOMPtr<nsIObserverService> observerService =
         do_GetService("@mozilla.org/observer-service;1", &rv);
     NS_ENSURE_SUCCESS(rv, rv);
@@ -309,6 +316,7 @@ nsNetworkLinkService::SendEvent(bool aNetworkChanged)
         event = mLinkUp ? NS_NETWORK_LINK_DATA_UP
             : NS_NETWORK_LINK_DATA_DOWN;
     }
+    LOG(("SendEvent: network is '%s'\n", event));
 
     observerService->NotifyObservers(static_cast<nsINetworkLinkService*>(this),
                                      NS_NETWORK_LINK_TOPIC,