* Remove some ivars that are only used as local vars

* Also I take back what I said about 4d97cbd and say it will happen now *duckundweg*

Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Ping & KeepAlive.h

@@ -32,8 +32,8 @@
 
 typedef struct {
 	MYSQL	*mySQLConnection;
-	BOOL	*keepAlivePingActivePointer;
-	BOOL	*keepAliveLastPingSuccessPointer;
+	volatile BOOL *keepAlivePingThreadActivePointer;
+	volatile BOOL *keepAliveLastPingSuccessPointer;
 } SPMySQLConnectionPingDetails;
 
 @interface SPMySQLConnection (Ping_and_KeepAlive)

Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Ping & KeepAlive.m

@@ -140,7 +140,7 @@ - (BOOL)_pingConnectionUsingLoopDelay:(NSUInteger)loopDelay
 	// Set up a query lock
 	[self _lockConnection];
 
-	keepAliveLastPingSuccess = NO;
+	volatile BOOL keepAliveLastPingSuccess = NO;
 	keepAliveLastPingBlocked = NO;
 	keepAlivePingThreadActive = YES;
 
@@ -152,12 +152,14 @@ - (BOOL)_pingConnectionUsingLoopDelay:(NSUInteger)loopDelay
 	SPMySQLConnectionPingDetails *pingDetails = malloc(sizeof(SPMySQLConnectionPingDetails));
 	pingDetails->mySQLConnection = mySQLConnection;
 	pingDetails->keepAliveLastPingSuccessPointer = &keepAliveLastPingSuccess;
-	pingDetails->keepAlivePingActivePointer = &keepAlivePingThreadActive;
+	pingDetails->keepAlivePingThreadActivePointer = &keepAlivePingThreadActive;
 
 	// Create a pthread for the ping
+	pthread_t keepAlivePingThread_t;
+
 	pthread_attr_t attr;
 	pthread_attr_init(&attr);
-	pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+	pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
 	pthread_create(&keepAlivePingThread_t, &attr, (void *)&_backgroundPingTask, pingDetails);
 
 	// Record the ping start time
@@ -245,7 +247,7 @@ void _forceThreadExit(int signalNumber)
 void _pingThreadCleanup(void *pingDetails)
 {
 	SPMySQLConnectionPingDetails *pingDetailsStruct = pingDetails;
-	*(pingDetailsStruct->keepAlivePingActivePointer) = NO;
+	*(pingDetailsStruct->keepAlivePingThreadActivePointer) = NO;
 
 	// Clean up MySQL variables and handlers
 	mysql_thread_end();

Frameworks/SPMySQLFramework/Source/SPMySQLConnection.h

@@ -86,9 +86,7 @@
 	uint64_t lastKeepAliveTime;
 	NSUInteger keepAlivePingFailures;
 	volatile NSThread *keepAliveThread;
-	pthread_t keepAlivePingThread_t;
-	BOOL keepAlivePingThreadActive;
-	BOOL keepAliveLastPingSuccess;
+	volatile BOOL keepAlivePingThreadActive;
 	BOOL keepAliveLastPingBlocked;
 
 	// Encoding details - and also a record of any previous encoding to allow

Frameworks/SPMySQLFramework/Source/SPMySQLConnection.m

@@ -145,9 +145,7 @@ - (id)init
 		keepAlivePingFailures = 0;
 		lastKeepAliveTime = 0;
 		keepAliveThread = nil;
-		keepAlivePingThread_t = NULL;
 		keepAlivePingThreadActive = NO;
-		keepAliveLastPingSuccess = NO;
 		keepAliveLastPingBlocked = NO;
 
 		// Set up default encoding variables