From 95cec6a5ecfdc2a75ba041a6e9f9cd568d53a6fc Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Wed, 27 Apr 2016 21:39:19 +0200
Subject: More accurate benchmarking
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Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 bench/benchmark-func.c | 35 +++++++----------------------------
 1 file changed, 7 insertions(+), 28 deletions(-)

(limited to 'bench/benchmark-func.c')

diff --git a/bench/benchmark-func.c b/bench/benchmark-func.c
index 82368a7..fe7e160 100644
--- a/bench/benchmark-func.c
+++ b/bench/benchmark-func.c
@@ -1,16 +1,7 @@
+#include "benchmark.h"
+
 #include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
 
-#ifdef BENCHMARK_LIB
-# include BENCHMARK_LIB
-#else
-# include "../zahl.h"
-# define BIGINT_LIBRARY "libzahl"
-#endif
 
 enum {
 	HIGH_ONLY,
@@ -34,24 +25,10 @@ struct function {
 	size_t measurements;
 };
 
-#if defined(__x86_64__)
-# undef clock_t
-# define clock_t unsigned long long int
-static inline clock_t rdtsc(void)
-{
-  unsigned int low, high;
-  __asm__ __volatile__ ("rdtsc" : "=a"(low), "=d"(high));
-  return (clock_t)low | (((clock_t)high) << 32);
-}
-#else
-# define rdtsc clock
-#endif
-
 #define M_MAX 200
 
 static char buf[1000];
 static z_t temp, temp2;
-static clock_t start, end;
 static unsigned long long int measurements[M_MAX];
 
 #if 1
@@ -124,12 +101,12 @@ gettime(size_t m)
 				INSTRUCTION;\
 				INSTRUCTION;\
 				j = f->runs;\
-				start = rdtsc();\
+				TIC;\
 				while (j--) {\
 					INSTRUCTION;\
 				}\
-				end = rdtsc();\
-				measurements[k] = (unsigned long long int)(end - start);\
+				TOC;\
+				measurements[k] = TICKS;\
 			}\
 			printf("%llu\n", gettime(f->measurements));\
 			a++;\
@@ -301,6 +278,8 @@ main(int argc, char *argv[])
 		return 2;
 	}
 
+	benchmark_init();
+
 	if (setjmp(jmp)) {
 		zperror(argv[0]);
 		return 1;
-- 
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