Bananymous
e03a26cf01
Return the current process CPU time as user time. We don't have a way to get system/user time separation or CPU times of child processes
27 lines
567 B
C++
27 lines
567 B
C++
#include <sys/times.h>
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#include <time.h>
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#include <unistd.h>
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static inline clock_t timespec_to_clock_t(const timespec& ts)
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{
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static clock_t clock_tick = -1;
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if (clock_tick == -1)
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clock_tick = sysconf(_SC_CLK_TCK);
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return ts.tv_sec * clock_tick + ts.tv_nsec * clock_tick / 1'000'000'000;
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}
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clock_t times(struct tms* buffer)
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{
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// FIXME: system time, child times
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*buffer = {};
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timespec ts;
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clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
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buffer->tms_utime = timespec_to_clock_t(ts);
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return timespec_to_clock_t(ts);
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}
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