52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
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#include <lladd/common.h>
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#include <math.h>
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void acquired_lock(profile_tuple * tup, long spin_count) {
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tup->sum_spin += spin_count;
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tup->sum_spin2 += (spin_count * spin_count);
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if(tup->max_spin < spin_count) { tup->max_spin = spin_count; }
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tup->count++;
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gettimeofday(&(tup->last_acquired), NULL);
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}
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void released_lock(profile_tuple * tup) {
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struct timeval now;
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double microseconds;
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gettimeofday(&now, NULL);
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microseconds = (double)((now.tv_sec - tup->last_acquired.tv_sec) * 1000000.0) +
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(double)(now.tv_usec - tup->last_acquired.tv_usec);
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tup->sum_hold += microseconds;
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tup->sum_hold2 += (microseconds * microseconds);
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if(tup->max_hold < microseconds) { tup->max_hold = microseconds; }
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}
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void print_profile_tuple(profile_tuple * tup) {
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/* Dump profiling info to stdout */
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if(tup->count) {
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double mean_spin = ((double)tup->sum_spin) / ((double)tup->count);
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double std_spin = sqrt((((double)tup->sum_spin2) / ((double)tup->count)) - (mean_spin * mean_spin));
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double mean_hold = ((double)tup->sum_hold)/ ((double)tup->count);
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double std_hold = sqrt((((double)tup->sum_hold2) / ((double)tup->count)) - (mean_hold * mean_hold));
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printf("{count=%ld spin[%1.4lf %1.4lf %0.0lf] held[%1.4lf %1.4lf %0.0lf]us}", tup->count,
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mean_spin, std_spin, tup->max_spin,
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mean_hold, std_hold, tup->max_hold);
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} else {
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printf("{count=0}");
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}
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}
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void init_tuple(profile_tuple * tup) {
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tup->sum_spin = 0;
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tup->sum_spin2 = 0;
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tup->max_spin = 0;
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tup->sum_hold = 0;
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tup->sum_hold2 = 0;
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tup->max_hold = 0;
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tup->count = 0;
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}
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