libc-bottom-half/cloudlibc/src/libc/sys/times/times.c

   1 // Copyright (c) 2015-2016 Nuxi, https://nuxi.nl/
   2 //
   3 // SPDX-License-Identifier: BSD-2-Clause
   4
   5 #include <common/time.h>
   6
   7 #include <sys/times.h>
   8
   9 #include <assert.h>
  10 #include <wasi/core.h>
  11
  12 static_assert(CLOCKS_PER_SEC == NSEC_PER_SEC,
  13               "Timestamp should need no conversion");
  14
  15 clock_t times(struct tms *buffer) {
  16   // Obtain user time.
  17   __wasi_timestamp_t usertime = 0;
  18   (void)__wasi_clock_time_get(__WASI_CLOCK_PROCESS_CPUTIME_ID, 0, &usertime);
  19   *buffer = (struct tms){.tms_utime = usertime};
  20
  21   // Obtain real time.
  22   __wasi_timestamp_t realtime = 0;
  23   (void)__wasi_clock_time_get(__WASI_CLOCK_MONOTONIC, 0, &realtime);
  24   return realtime;
  25 }