From b9b79aeff00b5367c76cb1797707345407354841 Mon Sep 17 00:00:00 2001
From: Twinaphex <libretro@gmail.com>
Date: Sat, 26 Jul 2014 04:35:00 +0200
Subject: [PATCH] (iOS) rarch_get_perf_counter should work properly now

---
 performance.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/performance.c b/performance.c
index 05ce4aed23..61ec4157c3 100644
--- a/performance.c
+++ b/performance.c
@@ -65,6 +65,7 @@
 #ifdef __MACH__
 #include <mach/clock.h>
 #include <mach/mach.h>
+#include <mach/mach_time.h>
 #endif
 
 #ifdef EMSCRIPTEN
@@ -139,7 +140,11 @@ void retro_perf_log(void)
 retro_perf_tick_t rarch_get_perf_counter(void)
 {
    retro_perf_tick_t time = 0;
-#if defined(__linux__) || defined(__QNX__)
+#if defined(__MACH__) && defined(__APPLE__) && defined(IOS)
+    struct mach_timebase_info convfact;
+    mach_timebase_info(&convfact);
+    time = mach_absolute_time();
+#elif defined(__linux__) || defined(__QNX__)
    struct timespec tv;
    if (clock_gettime(CLOCK_MONOTONIC, &tv) == 0)
       time = (retro_perf_tick_t)tv.tv_sec * 1000000000 + (retro_perf_tick_t)tv.tv_nsec;