Cedric Roux
56c66c09aa
Pre-ci test passed git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4000 818b1a75-f10b-46b9-bf7c-635c3b92a50f
69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
#ifdef OMP
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#include <omp.h>
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#endif
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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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#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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#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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static inline void stop_meas(time_stats_t *ts) {
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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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static inline void reset_meas(time_stats_t *ts) {
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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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