From 3e817f066515da9cec088f22b0d6c3172515531c Mon Sep 17 00:00:00 2001
From: Max <post@wickenrode.com>
Date: Mon, 26 Oct 2015 00:32:31 +0100
Subject: Merge in fixes for #2186

---
 .../Source/SPMySQLConnection Categories/Ping & KeepAlive.h     |  4 ++--
 .../Source/SPMySQLConnection Categories/Ping & KeepAlive.m     | 10 ++++++----
 Frameworks/SPMySQLFramework/Source/SPMySQLConnection.h         |  6 ++----
 Frameworks/SPMySQLFramework/Source/SPMySQLConnection.m         |  2 --
 4 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Ping & KeepAlive.h b/Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Ping & KeepAlive.h
index cff8d43b..24c23959 100644
--- a/Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Ping & KeepAlive.h	
+++ b/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)
diff --git a/Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Ping & KeepAlive.m b/Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Ping & KeepAlive.m
index 8b45e551..0d3abd20 100644
--- a/Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Ping & KeepAlive.m	
+++ b/Frameworks/SPMySQLFramework/Source/SPMySQLConnection Categories/Ping & KeepAlive.m	
@@ -140,7 +140,7 @@
 	// Set up a query lock
 	[self _lockConnection];
 
-	keepAliveLastPingSuccess = NO;
+	volatile BOOL keepAliveLastPingSuccess = NO;
 	keepAliveLastPingBlocked = NO;
 	keepAlivePingThreadActive = YES;
 
@@ -152,12 +152,14 @@
 	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
@@ -243,7 +245,7 @@ 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();
diff --git a/Frameworks/SPMySQLFramework/Source/SPMySQLConnection.h b/Frameworks/SPMySQLFramework/Source/SPMySQLConnection.h
index 1720fcf6..d3701454 100644
--- a/Frameworks/SPMySQLFramework/Source/SPMySQLConnection.h
+++ b/Frameworks/SPMySQLFramework/Source/SPMySQLConnection.h
@@ -85,10 +85,8 @@
 	CGFloat keepAliveInterval;
 	uint64_t lastKeepAliveTime;
 	NSUInteger keepAlivePingFailures;
-	NSThread *keepAliveThread;
-	pthread_t keepAlivePingThread_t;
-	BOOL keepAlivePingThreadActive;
-	BOOL keepAliveLastPingSuccess;
+  volatile NSThread *keepAliveThread;
+	volatile BOOL keepAlivePingThreadActive;
 	BOOL keepAliveLastPingBlocked;
 
 	// Encoding details - and also a record of any previous encoding to allow
diff --git a/Frameworks/SPMySQLFramework/Source/SPMySQLConnection.m b/Frameworks/SPMySQLFramework/Source/SPMySQLConnection.m
index 2acc0d4a..03ee36a9 100644
--- a/Frameworks/SPMySQLFramework/Source/SPMySQLConnection.m
+++ b/Frameworks/SPMySQLFramework/Source/SPMySQLConnection.m
@@ -131,9 +131,7 @@ const char *SPMySQLSSLPermissibleCiphers = "DHE-RSA-AES256-SHA:AES256-SHA:DHE-RS
 		keepAlivePingFailures = 0;
 		lastKeepAliveTime = 0;
 		keepAliveThread = nil;
-		keepAlivePingThread_t = NULL;
 		keepAlivePingThreadActive = NO;
-		keepAliveLastPingSuccess = NO;
 		keepAliveLastPingBlocked = NO;
 
 		// Set up default encoding variables
-- 
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