add ldpc tools

openair1/PHY/CODING/nrLDPC_tools/time_meas.c

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.0  (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.openairinterface.org/?page_id=698
+ *
+ * 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.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#include <stdio.h>
+#include "time_meas.h"
+#include <math.h>
+#include <unistd.h>
+
+// global var for openair performance profiler
+extern int opp_enabled;
+
+
+double get_cpu_freq_GHz(void) {
+
+  time_stats_t ts = {0};
+  reset_meas(&ts);
+  ts.trials++;
+  ts.in = rdtsc_oai();
+  sleep(1);
+  ts.diff = (rdtsc_oai()-ts.in);
+  cpu_freq_GHz = (double)ts.diff/1000000000;
+  printf("CPU Freq is %f \n", cpu_freq_GHz);
+  return cpu_freq_GHz; 
+}
+
+void print_meas_now(time_stats_t *ts, const char* name, FILE* file_name){
+
+  if (opp_enabled) {
+
+    //static double cpu_freq_GHz = 3.2;
+
+    //if (cpu_freq_GHz == 0.0)
+      //cpu_freq_GHz = get_cpu_freq_GHz(); // super slow
+
+    if (ts->trials>0) {
+
+      //fprintf(file_name,"Name %25s: Processing %15.3f ms for SF %d, diff_now %15.3f \n", name,(ts->diff_now/(cpu_freq_GHz*1000000.0)),subframe,ts->diff_now);
+      fprintf(file_name,"%15.3f ms, diff_now %15.3f \n",(ts->diff_now/(cpu_freq_GHz*1000000.0)),(double)ts->diff_now);
+      
+    }
+  }
+}
+
+void print_meas(time_stats_t *ts, const char* name, time_stats_t * total_exec_time, time_stats_t * sf_exec_time)
+{
+
+  if (opp_enabled) {
+
+    static int first_time = 0;
+    static double cpu_freq_GHz = 0.0;
+
+    if (cpu_freq_GHz == 0.0)
+      cpu_freq_GHz = get_cpu_freq_GHz();
+
+    if (first_time == 0) {
+      first_time=1;
+
+      if ((total_exec_time == NULL) || (sf_exec_time== NULL))
+        fprintf(stderr, "%25s  %25s  %25s  %25s %25s %6f\n","Name","Total","Per Trials",   "Num Trials","CPU_F_GHz", cpu_freq_GHz);
+      else
+        fprintf(stderr, "%25s  %25s  %25s  %20s %15s %6f\n","Name","Total","Average/Frame","Trials",    "CPU_F_GHz", cpu_freq_GHz);
+    }
+
+    if (ts->trials>0) {
+      //printf("%20s: total: %10.3f ms, average: %10.3f us (%10d trials)\n", name, ts->diff/cpu_freq_GHz/1000000.0, ts->diff/ts->trials/cpu_freq_GHz/1000.0, ts->trials);
+
+      if ((total_exec_time == NULL) || (sf_exec_time== NULL)) {
+        fprintf(stderr, "%25s:  %15.3f ms ;  %15.3f us; %15d;\n",
+                name,
+                (ts->diff/cpu_freq_GHz/1000000.0),
+                (ts->diff/ts->trials/cpu_freq_GHz/1000.0),
+                ts->trials);
+      } else {
+        fprintf(stderr, "%25s:  %15.3f ms (%5.2f%%); %15.3f us (%5.2f%%); %15d;\n",
+                name,
+                (ts->diff/cpu_freq_GHz/1000000.0),
+                ((ts->diff/cpu_freq_GHz/1000000.0)/(total_exec_time->diff/cpu_freq_GHz/1000000.0))*100,  // percentage
+                (ts->diff/ts->trials/cpu_freq_GHz/1000.0),
+                ((ts->diff/ts->trials/cpu_freq_GHz/1000.0)/(sf_exec_time->diff/sf_exec_time->trials/cpu_freq_GHz/1000.0))*100,  // percentage
+                ts->trials);
+      }
+    }
+  }
+
+}
+
+double get_time_meas_us(time_stats_t *ts)
+{
+
+  static double cpu_freq_GHz = 0.0;
+
+  if (cpu_freq_GHz == 0.0)
+    cpu_freq_GHz = get_cpu_freq_GHz();
+
+  if (ts->trials>0)
+    return  (ts->diff/ts->trials/cpu_freq_GHz/1000.0);
+
+  return 0;
+}

openair1/PHY/CODING/nrLDPC_tools/time_meas.h

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.0  (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.openairinterface.org/?page_id=698
+ *
+ * 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.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#ifndef __TIME_MEAS_DEFS__H__
+#define __TIME_MEAS_DEFS__H__
+
+#include <unistd.h>
+#include <math.h>
+#include <stdint.h>
+#include <time.h>
+#include <errno.h>
+#include <stdio.h>
+#include <pthread.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+// global var to enable openair performance profiler
+static int opp_enabled = 1;
+double cpu_freq_GHz;
+#if defined(__x86_64__) || defined(__i386__)
+
+typedef struct {
+
+  long long in;
+  long long diff;
+  long long diff_now;
+  long long p_time; /*!< \brief absolute process duration */
+  long long diff_square; /*!< \brief process duration square */
+  long long max;
+  int trials;
+  int meas_flag;
+} time_stats_t;
+#elif defined(__arm__)
+typedef struct {
+  uint32_t in;
+  uint32_t diff_now;
+  uint32_t diff;
+  uint32_t p_time; /*!< \brief absolute process duration */
+  uint32_t diff_square; /*!< \brief process duration square */
+  uint32_t max;
+  int trials;
+} time_stats_t;
+
+#endif
+static inline void start_meas(time_stats_t *ts) __attribute__((always_inline));
+static inline void stop_meas(time_stats_t *ts) __attribute__((always_inline));
+
+
+void print_meas_now(time_stats_t *ts, const char* name, FILE* file_name);
+//void print_meas(time_stats_t *ts, const char* name, time_stats_t * total_exec_time, time_stats_t * sf_exec_time);
+double get_time_meas_us(time_stats_t *ts);
+double get_cpu_freq_GHz(void);
+
+#if defined(__i386__)
+static inline unsigned long long rdtsc_oai(void) __attribute__((always_inline));
+static inline unsigned long long rdtsc_oai(void)
+{
+  unsigned long long int x;
+  __asm__ volatile (".byte 0x0f, 0x31" : "=A" (x));
+  return x;
+}
+#elif defined(__x86_64__)
+static inline unsigned long long rdtsc_oai(void) __attribute__((always_inline));
+static inline unsigned long long rdtsc_oai(void)
+{
+  unsigned long long a, d;
+  __asm__ volatile ("rdtsc" : "=a" (a), "=d" (d));
+  return (d<<32) | a;
+}
+
+#elif defined(__arm__)
+static inline uint32_t rdtsc_oai(void) __attribute__((always_inline));
+static inline uint32_t rdtsc_oai(void)
+{
+  uint32_t r = 0;
+  asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r"(r) );
+  return r;
+}
+#endif
+
+static inline void start_meas(time_stats_t *ts)
+{
+
+  if (opp_enabled) {
+    if (ts->meas_flag==0) {
+      ts->trials++;
+      ts->in = rdtsc_oai();
+      ts->meas_flag=1;
+    }
+    else {
+      ts->in = rdtsc_oai();
+    }
+  }
+}
+
+static inline void stop_meas(time_stats_t *ts)
+{
+
+  if (opp_enabled) {
+    long long out = rdtsc_oai();
+
+    ts->diff_now = (out-ts->in);
+
+    ts->diff_now = (out-ts->in);
+    ts->diff += (out-ts->in);
+    /// process duration is the difference between two clock points
+    ts->p_time = (out-ts->in);
+    ts->diff_square += (out-ts->in)*(out-ts->in);
+
+    if ((out-ts->in) > ts->max)
+      ts->max = out-ts->in;
+
+    ts->meas_flag=0;
+  }
+}
+
+static inline void reset_meas(time_stats_t *ts) {
+
+  ts->trials=0;
+  ts->diff=0;
+  ts->diff_now=0;
+  ts->p_time=0;
+  ts->diff_square=0;
+  ts->max=0;
+  ts->meas_flag=0;
+
+}
+
+static inline void copy_meas(time_stats_t *dst_ts,time_stats_t *src_ts)
+{
+
+  if (opp_enabled) {
+    dst_ts->trials=src_ts->trials;
+    dst_ts->diff=src_ts->diff;
+    dst_ts->max=src_ts->max;
+  }
+}
+
+#endif