1*a1e26a70SApple OSS Distributions #include <stdio.h> 2*a1e26a70SApple OSS Distributions #include <stdlib.h> 3*a1e26a70SApple OSS Distributions #include <unistd.h> 4*a1e26a70SApple OSS Distributions #include <sys/stat.h> 5*a1e26a70SApple OSS Distributions #include <mach/mach_time.h> 6*a1e26a70SApple OSS Distributions #include <sys/time.h> 7*a1e26a70SApple OSS Distributions 8*a1e26a70SApple OSS Distributions #include <darwintest.h> 9*a1e26a70SApple OSS Distributions #include <darwintest_perf.h> 10*a1e26a70SApple OSS Distributions 11*a1e26a70SApple OSS Distributions T_GLOBAL_META(T_META_TAG_PERF); 12*a1e26a70SApple OSS Distributions 13*a1e26a70SApple OSS Distributions T_DECL(gettimeofday_tl, "gettimeofday performance in tight loop", T_META_TAG_VM_NOT_ELIGIBLE) { 14*a1e26a70SApple OSS Distributions { 15*a1e26a70SApple OSS Distributions struct timeval time; 16*a1e26a70SApple OSS Distributions dt_stat_time_t s = dt_stat_time_create("gettimeofday tight loop"); T_STAT_MEASURE_LOOP(s)17*a1e26a70SApple OSS Distributions T_STAT_MEASURE_LOOP(s){ 18*a1e26a70SApple OSS Distributions gettimeofday(&time, NULL); 19*a1e26a70SApple OSS Distributions } 20*a1e26a70SApple OSS Distributions dt_stat_finalize(s); 21*a1e26a70SApple OSS Distributions } 22*a1e26a70SApple OSS Distributions } 23*a1e26a70SApple OSS Distributions 24*a1e26a70SApple OSS Distributions extern int __gettimeofday(struct timeval *, struct timezone *); 25*a1e26a70SApple OSS Distributions T_DECL(__gettimeofday_tl, "__gettimeofday performance in tight loop", T_META_TAG_VM_NOT_ELIGIBLE) { 26*a1e26a70SApple OSS Distributions { 27*a1e26a70SApple OSS Distributions struct timeval time; 28*a1e26a70SApple OSS Distributions 29*a1e26a70SApple OSS Distributions dt_stat_time_t s = dt_stat_time_create("__gettimeofday tight loop"); T_STAT_MEASURE_LOOP(s)30*a1e26a70SApple OSS Distributions T_STAT_MEASURE_LOOP(s){ 31*a1e26a70SApple OSS Distributions __gettimeofday(&time, NULL); 32*a1e26a70SApple OSS Distributions } 33*a1e26a70SApple OSS Distributions dt_stat_finalize(s); 34*a1e26a70SApple OSS Distributions } 35*a1e26a70SApple OSS Distributions } 36*a1e26a70SApple OSS Distributions 37*a1e26a70SApple OSS Distributions T_DECL(gettimeofday_sl, "gettimeofday performance in loop with sleep", T_META_TAG_VM_NOT_ELIGIBLE) { 38*a1e26a70SApple OSS Distributions { 39*a1e26a70SApple OSS Distributions struct timeval time; 40*a1e26a70SApple OSS Distributions dt_stat_time_t s = dt_stat_time_create("gettimeofday loop with sleep"); 41*a1e26a70SApple OSS Distributions while (!dt_stat_stable(s)) { T_STAT_MEASURE_BATCH(s)42*a1e26a70SApple OSS Distributions T_STAT_MEASURE_BATCH(s){ 43*a1e26a70SApple OSS Distributions gettimeofday(&time, NULL); 44*a1e26a70SApple OSS Distributions } 45*a1e26a70SApple OSS Distributions sleep(1); 46*a1e26a70SApple OSS Distributions } 47*a1e26a70SApple OSS Distributions dt_stat_finalize(s); 48*a1e26a70SApple OSS Distributions } 49*a1e26a70SApple OSS Distributions } 50