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#include <errno.h>
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#include <stdbool.h>
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#include <sys/proc.h>
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#include <sys/times.h>
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#include <time.h>
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#define TIMES_HZ 100
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clock_t times(struct tms *buf) {
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if (buf) {
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proc_stat_t stat = { 0 };
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if (proc_stat_read_path("/proc/self/stat", &stat) >= 0) {
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clock_t user_ticks = (clock_t)((stat.user_time_ms * TIMES_HZ) / 1000ULL);
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clock_t sys_ticks = (clock_t)((stat.sys_time_ms * TIMES_HZ) / 1000ULL);
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clock_t child_user_ticks = (clock_t)((stat.child_user_time_ms * TIMES_HZ) / 1000ULL);
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clock_t child_sys_ticks = (clock_t)((stat.child_sys_time_ms * TIMES_HZ) / 1000ULL);
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buf->tms_utime = user_ticks;
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buf->tms_stime = sys_ticks;
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buf->tms_cutime = child_user_ticks;
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buf->tms_cstime = child_sys_ticks;
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} else {
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buf->tms_utime = 0;
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buf->tms_stime = 0;
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buf->tms_cutime = 0;
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buf->tms_cstime = 0;
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}28
}29
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struct timespec now = { 0 };
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if (clock_gettime(CLOCK_MONOTONIC, &now) < 0) {
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return (clock_t)-1;
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}34
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return (clock_t)(now.tv_sec * TIMES_HZ) + (clock_t)((now.tv_nsec * TIMES_HZ) / 1000000000L);
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}