Fix threading issue when exiting PPSSPP due to unjoined AdhocServer thread when AdhocServer failed to bind the socket and exited the thread early.

Core/HLE/proAdhoc.h

@@ -40,6 +40,7 @@
 
 #include <thread>
 #include <mutex>
+#include <atomic>
 
 #include "Common/Net/Resolve.h"
 #include "Common/Serialize/Serializer.h"

Core/HLE/proAdhocServer.cpp

@@ -80,8 +80,7 @@ SceNetAdhocctlUserNode * _db_user = NULL;
 SceNetAdhocctlGameNode * _db_game = NULL;
 
 // Server Status
-//int _status = 0;
-bool adhocServerRunning = false;
+std::atomic<bool> adhocServerRunning(false);
 std::thread adhocServerThread;
 
 // Crosslink database for cross region Adhoc play

Core/HLE/proAdhocServer.h

@@ -369,5 +369,5 @@ void update_status();
 int proAdhocServerThread(int port); // (int argc, char * argv[])
 
 //extern int _status;
-extern bool adhocServerRunning;
+extern std::atomic<bool> adhocServerRunning;
 extern std::thread adhocServerThread;

Core/HLE/sceNetAdhoc.cpp

@@ -118,12 +118,11 @@ static int sceNetAdhocPdpRecv(int id, void* addr, void* port, void* buf, void* d
 
 void __NetAdhocShutdown() {
 	// Kill AdhocServer Thread
-	if (adhocServerRunning) {
-		adhocServerRunning = false;
-		if (adhocServerThread.joinable()) {
-			adhocServerThread.join();
-		}
+	adhocServerRunning = false;
+	if (adhocServerThread.joinable()) {
+		adhocServerThread.join();
 	}
+
 	// Checks to avoid confusing logspam
 	if (netAdhocMatchingInited) {
 		NetAdhocMatching_Term();
@@ -1180,8 +1179,8 @@ void __NetAdhocInit() {
 	__AdhocServerInit();
 
 	// Create built-in AdhocServer Thread
+	adhocServerRunning = false;
 	if (g_Config.bEnableWlan && g_Config.bEnableAdhocServer) {
-		adhocServerRunning = true;
 		adhocServerThread = std::thread(proAdhocServerThread, SERVER_PORT);
 	}
 }