From 8b52a31ed2c299b759f330c4f976b9c70f5765f4 Mon Sep 17 00:00:00 2001
From: Hanoh Haim <hhaim@cisco.com>
Date: Wed, 24 Jun 2015 14:03:29 +0300
Subject: first version

---
 src/os_time.h | 134 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100755 src/os_time.h

(limited to 'src/os_time.h')

diff --git a/src/os_time.h b/src/os_time.h
new file mode 100755
index 00000000..153ee3e3
--- /dev/null
+++ b/src/os_time.h
@@ -0,0 +1,134 @@
+#ifndef OS_TIME_H
+#define OS_TIME_H
+/*
+ Hanoh Haim
+ Cisco Systems, Inc.
+*/
+
+/*
+Copyright (c) 2015-2015 Cisco Systems, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+#include <stdint.h>
+
+typedef uint64_t   hr_time_t; // time in high res tick 
+typedef uint32_t   hr_time_32_t; // time in high res tick 
+typedef double     dsec_t;    //time in sec double
+
+uint32_t 	 os_get_time_msec();
+uint32_t 	 os_get_time_freq();
+
+
+
+#ifdef LINUX
+
+#ifdef RTE_DPDK
+
+
+//extern "C" uint64_t rte_get_hpet_hz(void);
+
+#include "rte_cycles.h"
+
+static inline hr_time_t    os_get_hr_tick_64(void){
+    return (rte_rdtsc());
+}
+
+static inline hr_time_32_t os_get_hr_tick_32(void){
+    return ( (uint32_t)os_get_hr_tick_64());
+}
+
+static inline hr_time_t    os_get_hr_freq(void){
+    return (rte_get_tsc_hz() );
+}
+
+
+
+#else
+
+
+/* read the rdtsc register for ticks
+   works for 64 bit aswell
+*/
+static inline void  platform_time_get_highres_tick_64(uint64_t* t)
+{
+    uint32_t lo, hi;
+    __asm__ __volatile__ (      // serialize
+	  "xorl %%eax,%%eax \n        cpuid"
+	  ::: "%rax", "%rbx", "%rcx", "%rdx");
+     /* We cannot use "=A", since this would use %rax on x86_64 and return
+     only the lower 32bits of the TSC */
+     __asm__ __volatile__ ("rdtsc" : "=a" (lo), "=d" (hi));
+    *t = (uint64_t)hi << 32 | lo;
+}
+
+static inline uint32_t  platform_time_get_highres_tick_32()
+{
+    uint64_t t;
+    platform_time_get_highres_tick_64(&t);
+    return ((uint32_t)t);
+}
+
+
+static inline hr_time_t    os_get_hr_freq(void){
+	return (3000000000ULL);
+}
+
+static inline hr_time_t os_get_hr_tick_64(void) {
+ hr_time_t res;
+ platform_time_get_highres_tick_64(&res);
+ return (res);
+}
+
+static inline uint32_t os_get_hr_tick_32(void) {
+	return (platform_time_get_highres_tick_32());
+}
+
+#endif
+
+#else
+
+hr_time_t    os_get_hr_tick_64(void);
+hr_time_32_t os_get_hr_tick_32(void);
+hr_time_t    os_get_hr_freq(void);
+#endif
+
+
+/* convert delta time */
+static inline hr_time_t ptime_convert_dsec_hr(dsec_t dsec){
+    return((hr_time_t)(dsec*(double)os_get_hr_freq()) );
+}
+
+/* convert delta time */
+static inline dsec_t  ptime_convert_hr_dsec(hr_time_t hrt){
+    return ((dsec_t)((double)hrt/(double)os_get_hr_freq() ));
+}
+
+
+extern  hr_time_t start_time;
+
+static inline void time_init(){
+	start_time=os_get_hr_tick_64();
+}
+
+/* should be fixed , need to move to high rez tick */
+static inline dsec_t now_sec(void){
+    hr_time_t d=os_get_hr_tick_64() - start_time;
+	return ( ptime_convert_hr_dsec(d) );
+}
+
+
+
+
+#endif
-- 
cgit 1.2.3-korg