Navid Nikaein
c1fd89b2a2
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5243 818b1a75-f10b-46b9-bf7c-635c3b92a50f
107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
#ifdef OMP
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#include <omp.h>
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#endif
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#include <unistd.h>
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// global var to enable openair performance profiler
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extern int opp_enabled;
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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 max;
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int trials;
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} time_stats_t;
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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(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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#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() __attribute__((always_inline));
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static inline unsigned long long rdtsc_oai() {
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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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#endif
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static inline void start_meas(time_stats_t *ts) {
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if (opp_enabled) {
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#ifdef OMP
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int tid;
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tid = omp_get_thread_num();
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if (tid==0)
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#endif
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{
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ts->trials++;
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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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#ifdef OMP
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int tid;
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tid = omp_get_thread_num();
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if (tid==0)
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#endif
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{
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ts->diff += (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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}
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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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if (opp_enabled){
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ts->trials=0;
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ts->diff=0;
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ts->max=0;
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}
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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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/*static inline double get_mean_meas_us(time_stats_t *ts, double cpu_freq_GHz) {
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return (double) ts->diff/ts->trials/cpu_freq_GHz/1000.0;
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}*/
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static inline double get_cpu_freq_GHz(void) {
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time_stats_t ts;
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reset_meas(&ts);
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start_meas(&ts);
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sleep(1);
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stop_meas(&ts);
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return (double)ts.diff/1000000000;
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}
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