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d6384b09e1
Linux sets _POSIX_MONOTONIC_CLOCK to 0 meaning it *might* be available, so a sysconf check is necessary at runtime with a fallback to the mandatory CLOCK_REALTIME clock.
23 lines
569 B
C
23 lines
569 B
C
/* Simple timer, for use in benchmark reporting. */
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#include <unistd.h>
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#include <sys/time.h>
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#define JEMALLOC_CLOCK_GETTIME defined(_POSIX_MONOTONIC_CLOCK) \
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&& _POSIX_MONOTONIC_CLOCK >= 0
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typedef struct {
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#if JEMALLOC_CLOCK_GETTIME
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struct timespec tv0;
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struct timespec tv1;
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int clock_id;
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#else
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struct timeval tv0;
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struct timeval tv1;
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#endif
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} timedelta_t;
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void timer_start(timedelta_t *timer);
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void timer_stop(timedelta_t *timer);
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uint64_t timer_usec(const timedelta_t *timer);
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void timer_ratio(timedelta_t *a, timedelta_t *b, char *buf, size_t buflen);
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