Bug 1219910 - make gSocketThread a relaxed atomic variable; r=mcmanus

Many places that (re-)declared gSocketThread already included
nsSocketTransportService2.h; we can delete the declaration for those
places.  For all the other places, we need to include
nsSocketTransportService2.h.

netwerk/base/EventTokenBucket.cpp

@@ -19,8 +19,6 @@
 #include <mmsystem.h>
 #endif
 
-extern PRThread *gSocketThread;
-
 namespace mozilla {
 namespace net {
 

netwerk/base/TLSServerSocket.cpp

@@ -20,8 +20,6 @@
 #include "ScopedNSSTypes.h"
 #include "ssl.h"
 
-extern PRThread *gSocketThread;
-
 namespace mozilla {
 namespace net {
 

netwerk/base/nsSocketTransportService2.cpp

@@ -17,6 +17,7 @@
 #include "nsIPrefBranch.h"
 #include "nsServiceManagerUtils.h"
 #include "nsIObserverService.h"
+#include "mozilla/Atomics.h"
 #include "mozilla/Services.h"
 #include "mozilla/Likely.h"
 #include "mozilla/PublicSSL.h"
@@ -33,7 +34,7 @@ LazyLogModule gSocketTransportLog("nsSocketTransport");
 LazyLogModule gUDPSocketLog("UDPSocket");
 
 nsSocketTransportService *gSocketTransportService = nullptr;
-PRThread                 *gSocketThread           = nullptr;
+Atomic<PRThread*, Relaxed> gSocketThread;
 
 #define SEND_BUFFER_PREF "network.tcp.sendbuffer"
 #define KEEPALIVE_ENABLED_PREF "network.tcp.keepalive.enabled"

netwerk/base/nsSocketTransportService2.h

@@ -262,6 +262,6 @@ private:
 };
 
 extern nsSocketTransportService *gSocketTransportService;
-extern PRThread                 *gSocketThread;
+extern mozilla::Atomic<PRThread*, mozilla::Relaxed> gSocketThread;
 
 #endif // !nsSocketTransportService_h__

netwerk/protocol/http/ConnectionDiagnostics.cpp

@@ -15,8 +15,7 @@
 #include "nsIConsoleService.h"
 #include "nsHttpRequestHead.h"
 #include "nsServiceManagerUtils.h"
-
-extern PRThread *gSocketThread;
+#include "nsSocketTransportService2.h"
 
 namespace mozilla {
 namespace net {

netwerk/protocol/http/Http2Compression.cpp

@@ -18,8 +18,6 @@
 #include "Http2HuffmanOutgoing.h"
 #include "mozilla/StaticPtr.h"
 
-extern PRThread *gSocketThread;
-
 namespace mozilla {
 namespace net {
 

netwerk/protocol/http/Http2Session.cpp

@@ -35,11 +35,7 @@
 #include "prnetdb.h"
 #include "sslt.h"
 #include "mozilla/Snprintf.h"
-
-#ifdef DEBUG
-// defined by the socket transport service while active
-extern PRThread *gSocketThread;
-#endif
+#include "nsSocketTransportService2.h"
 
 namespace mozilla {
 namespace net {

netwerk/protocol/http/Http2Stream.cpp

@@ -32,11 +32,6 @@
 #include "nsStandardURL.h"
 #include "prnetdb.h"
 
-#ifdef DEBUG
-// defined by the socket transport service while active
-extern PRThread *gSocketThread;
-#endif
-
 namespace mozilla {
 namespace net {
 

netwerk/protocol/http/SpdySession31.cpp

@@ -26,14 +26,10 @@
 #include "SpdySession31.h"
 #include "SpdyStream31.h"
 #include "SpdyZlibReporter.h"
+#include "nsSocketTransportService2.h"
 
 #include <algorithm>
 
-#ifdef DEBUG
-// defined by the socket transport service while active
-extern PRThread *gSocketThread;
-#endif
-
 namespace mozilla {
 namespace net {
 

netwerk/protocol/http/SpdyStream31.cpp

@@ -28,11 +28,6 @@
 
 #include <algorithm>
 
-#ifdef DEBUG
-// defined by the socket transport service while active
-extern PRThread *gSocketThread;
-#endif
-
 namespace mozilla {
 namespace net {
 

netwerk/protocol/http/TunnelUtils.cpp

@@ -24,11 +24,6 @@
 #include "nsServiceManagerUtils.h"
 #include "nsComponentManagerUtils.h"
 
-#ifdef DEBUG
-// defined by the socket transport service while active
-extern PRThread *gSocketThread;
-#endif
-
 namespace mozilla {
 namespace net {
 

netwerk/protocol/http/nsHttpConnection.cpp

@@ -33,11 +33,6 @@
 #include "sslt.h"
 #include "TunnelUtils.h"
 
-#ifdef DEBUG
-// defined by the socket transport service while active
-extern PRThread *gSocketThread;
-#endif
-
 namespace mozilla {
 namespace net {
 

netwerk/protocol/http/nsHttpConnectionMgr.cpp

@@ -37,9 +37,6 @@
 
 #include "mozilla/Telemetry.h"
 
-// defined by the socket transport service while active
-extern PRThread *gSocketThread;
-
 namespace mozilla {
 namespace net {
 

netwerk/protocol/http/nsHttpHandler.cpp

@@ -51,6 +51,7 @@
 #include "nsHttpChannelAuthProvider.h"
 #include "nsServiceManagerUtils.h"
 #include "nsComponentManagerUtils.h"
+#include "nsSocketTransportService2.h"
 
 #include "mozilla/net/NeckoChild.h"
 #include "mozilla/ipc/URIUtils.h"
@@ -73,11 +74,6 @@
 #include "mozilla/net/HttpChannelChild.h"
 
 
-#ifdef DEBUG
-// defined by the socket transport service while active
-extern PRThread *gSocketThread;
-#endif
-
 #define UA_PREF_PREFIX          "general.useragent."
 #ifdef XP_WIN
 #define UA_SPARE_PLATFORM

netwerk/protocol/http/nsHttpPipeline.cpp

@@ -12,12 +12,11 @@
 #include "nsISocketTransport.h"
 #include "nsIPipe.h"
 #include "nsCOMPtr.h"
+#include "nsSocketTransportService2.h"
 #include <algorithm>
 
 #ifdef DEBUG
 #include "prthread.h"
-// defined by the socket transport service while active
-extern PRThread *gSocketThread;
 #endif
 
 namespace mozilla {

netwerk/protocol/http/nsHttpTransaction.cpp

@@ -44,13 +44,6 @@
 
 //-----------------------------------------------------------------------------
 
-#ifdef DEBUG
-// defined by the socket transport service while active
-extern PRThread *gSocketThread;
-#endif
-
-//-----------------------------------------------------------------------------
-
 static NS_DEFINE_CID(kMultiplexInputStream, NS_MULTIPLEXINPUTSTREAM_CID);
 
 // Place a limit on how much non-compliant HTTP can be skipped while

netwerk/protocol/websocket/WebSocketChannel.cpp

@@ -55,6 +55,7 @@
 #include "mozilla/StaticMutex.h"
 #include "mozilla/Telemetry.h"
 #include "mozilla/TimeStamp.h"
+#include "nsSocketTransportService2.h"
 
 #include "plbase64.h"
 #include "prmem.h"
@@ -70,8 +71,6 @@
 // dupe one constant we need from it
 #define CLOSE_GOING_AWAY 1001
 
-extern PRThread *gSocketThread;
-
 using namespace mozilla;
 using namespace mozilla::net;
 

netwerk/protocol/websocket/WebSocketEventService.cpp

@@ -12,8 +12,7 @@
 #include "mozilla/StaticPtr.h"
 #include "nsISupportsPrimitives.h"
 #include "nsXULAppAPI.h"
-
-extern PRThread *gSocketThread;
+#include "nsSocketTransportService2.h"
 
 namespace mozilla {
 namespace net {

netwerk/protocol/websocket/WebSocketFrame.cpp

@@ -7,8 +7,7 @@
 #include "WebSocketFrame.h"
 
 #include "WebSocketChannel.h"
-
-extern PRThread *gSocketThread;
+#include "nsSocketTransportService2.h"
 
 namespace mozilla {
 namespace net {