141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#ifndef __TIME_MEAS_DEFS__H__
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#define __TIME_MEAS_DEFS__H__
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#include <unistd.h>
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#include <math.h>
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#include <stdint.h>
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#include <time.h>
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#include <errno.h>
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#include <stdio.h>
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#include <pthread.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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// global var to enable openair performance profiler
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extern int opp_enabled;
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double cpu_freq_GHz __attribute__ ((aligned(32)));;
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#if defined(__x86_64__) || defined(__i386__)
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typedef struct {
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long long in;
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long long diff;
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long long p_time; /*!< \brief absolute process duration */
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long long diff_square; /*!< \brief process duration square */
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long long max;
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int trials;
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int meas_flag;
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} time_stats_t;
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#elif defined(__arm__)
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typedef struct {
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uint32_t in;
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uint32_t diff;
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uint32_t p_time; /*!< \brief absolute process duration */
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uint32_t diff_square; /*!< \brief process duration square */
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uint32_t max;
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int trials;
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} time_stats_t;
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#endif
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static inline void start_meas(time_stats_t *ts) __attribute__((always_inline));
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static inline void stop_meas(time_stats_t *ts) __attribute__((always_inline));
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void print_meas_now(time_stats_t *ts, const char *name, FILE *file_name);
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void print_meas(time_stats_t *ts, const char *name, time_stats_t *total_exec_time, time_stats_t *sf_exec_time);
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double get_time_meas_us(time_stats_t *ts);
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double get_cpu_freq_GHz(void);
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#if defined(__i386__)
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static inline unsigned long long rdtsc_oai(void) __attribute__((always_inline));
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static inline unsigned long long rdtsc_oai(void) {
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unsigned long long int x;
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__asm__ volatile (".byte 0x0f, 0x31" : "=A" (x));
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return x;
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}
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#elif defined(__x86_64__)
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static inline unsigned long long rdtsc_oai(void) __attribute__((always_inline));
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static inline unsigned long long rdtsc_oai(void) {
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unsigned long long a, d;
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__asm__ volatile ("rdtsc" : "=a" (a), "=d" (d));
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return (d<<32) | a;
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}
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#elif defined(__arm__)
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static inline uint32_t rdtsc_oai(void) __attribute__((always_inline));
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static inline uint32_t rdtsc_oai(void) {
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uint32_t r = 0;
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asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r"(r) );
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return r;
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}
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#endif
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#define CPUMEAS_DISABLE 0
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#define CPUMEAS_ENABLE 1
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#define CPUMEAS_GETSTATE 2
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int cpumeas(int action);
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static inline void start_meas(time_stats_t *ts) {
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if (opp_enabled) {
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if (ts->meas_flag==0) {
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ts->trials++;
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ts->in = rdtsc_oai();
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ts->meas_flag=1;
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} else {
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ts->in = rdtsc_oai();
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}
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}
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}
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static inline void stop_meas(time_stats_t *ts) {
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if (opp_enabled) {
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long long out = rdtsc_oai();
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ts->diff += (out-ts->in);
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/// process duration is the difference between two clock points
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ts->p_time = (out-ts->in);
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ts->diff_square += (out-ts->in)*(out-ts->in);
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if ((out-ts->in) > ts->max)
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ts->max = out-ts->in;
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ts->meas_flag=0;
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}
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}
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static inline void reset_meas(time_stats_t *ts) {
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ts->in=0;
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ts->diff=0;
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ts->p_time=0;
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ts->diff_square=0;
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ts->max=0;
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ts->trials=0;
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ts->meas_flag=0;
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}
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static inline void copy_meas(time_stats_t *dst_ts,time_stats_t *src_ts) {
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if (opp_enabled) {
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dst_ts->trials=src_ts->trials;
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dst_ts->diff=src_ts->diff;
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dst_ts->max=src_ts->max;
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}
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}
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#endif
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