/*

htop - generic/gettime.c

(C) 2021 htop dev team

Released under the GNU GPLv2+, see the COPYING file

in the source distribution for its full text.

*/

#include "config.h" // IWYU pragma: keep

#include "generic/gettime.h"

#include <string.h>

#if !defined(HAVE_CLOCK_GETTIME)

#include <sys/time.h>

#endif

void Generic_gettime_realtime(struct timespec* tsp, uint64_t* msec) {

#if defined(HAVE_CLOCK_GETTIME)

if (clock_gettime(CLOCK_REALTIME, tsp) == 0) {

*msec = ((uint64_t)tsp->tv_sec * 1000) + ((uint64_t)tsp->tv_nsec / 1000000);

} else {

memset(tsp, 0, sizeof(*tsp));

*msec = 0;

}

#else /* lower resolution gettimeofday(2) fallback */

struct timeval tv;

if (gettimeofday(&tv, NULL) == 0) {

tsp->tv_sec = tv.tv_sec;

tsp->tv_nsec = (long)tv.tv_usec * 1000L;

*msec = ((uint64_t)tv.tv_sec * 1000) + ((uint64_t)tv.tv_usec / 1000);

} else {

memset(tsp, 0, sizeof(*tsp));

*msec = 0;

}

#endif

}

void Generic_gettime_monotonic(uint64_t* msec) {

#if defined(HAVE_CLOCK_GETTIME)

struct timespec ts;

if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)

*msec = ((uint64_t)ts.tv_sec * 1000) + ((uint64_t)ts.tv_nsec / 1000000);

else

*msec = 0;

#else /* lower resolution gettimeofday() fallback */

struct timeval tv;

if (gettimeofday(&tv, NULL) == 0)

*msec = ((uint64_t)tv.tv_sec * 1000) + ((uint64_t)tv.tv_usec / 1000);

else

*msec = 0;

#endif

}