From df0307348d0d74efee83957cc4543cf7a4c7e815 Mon Sep 17 00:00:00 2001
From: Twinaphex <libretro@gmail.com>
Date: Thu, 6 Aug 2015 08:36:46 +0200
Subject: [PATCH] Revert "(iOS) Don't use iteration timers anymore"

This reverts commit 6ae26e95ea9189d78d2bbfb7ebd702aa22c70e7d.
---
 ui/drivers/ui_cocoatouch.m | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/ui/drivers/ui_cocoatouch.m b/ui/drivers/ui_cocoatouch.m
index 9c05284780..ce373cb2d2 100644
--- a/ui/drivers/ui_cocoatouch.m
+++ b/ui/drivers/ui_cocoatouch.m
@@ -37,6 +37,7 @@
 
 static id apple_platform;
 static CFRunLoopObserverRef iterate_observer;
+static CFRunLoopTimerRef iterate_timer;
 
 /* forward declaration */
 void apple_rarch_exited(void);
@@ -62,6 +63,14 @@ static void rarch_draw(void)
 
    rarch_main_data_iterate();
 
+   if (iterate_timer)
+   {
+      if (rarch_main_data_active())
+         CFRunLoopAddTimer(CFRunLoopGetMain(), iterate_timer, kCFRunLoopCommonModes); 
+      else
+         CFRunLoopRemoveTimer(CFRunLoopGetMain(), iterate_timer, kCFRunLoopCommonModes); 
+   }
+
    if (ret == -1)
    {
       main_exit_save_config();
@@ -300,9 +309,23 @@ void apple_start_iterate_observer(void)
   CFRunLoopAddObserver(CFRunLoopGetMain(), iterate_observer, kCFRunLoopCommonModes);
 }
 
+void apple_start_iterate_timer(void)
+{
+  CFTimeInterval interval;
+  
+  if (iterate_timer)
+    return;
+
+  // This number is a double measured in seconds.
+  interval = 1.0 / 60.0 / 1000.0;
+
+  iterate_timer = CFRunLoopTimerCreate(0, interval, interval, 0, 0, rarch_draw_timer, 0);
+}
+
 - (void) apple_start_iteration
 {
   apple_start_iterate_observer();
+  apple_start_iterate_timer();
 }
 
 void apple_stop_iterate_observer(void)
@@ -315,9 +338,20 @@ void apple_stop_iterate_observer(void)
     iterate_observer = NULL;
 }
 
+void apple_stop_iterate_timer(void)
+{
+    if (!iterate_timer)
+        return;
+    
+    CFRunLoopTimerInvalidate(iterate_timer);
+    CFRelease(iterate_timer);
+    iterate_timer = NULL;
+}
+
 - (void) apple_stop_iteration
 {
   apple_stop_iterate_observer();
+  apple_stop_iterate_timer();
 }
 
 - (void)applicationDidEnterBackground:(UIApplication *)application