| 1 | #define _WASI_EMULATED_PROCESS_CLOCKS |
| 2 | #include <time.h> |
| 3 | #include <sys/times.h> |
| 4 | #include <wasi/api.h> |
| 5 | #include <common/time.h> |
| 6 | |
| 7 | _Static_assert( |
| 8 | CLOCKS_PER_SEC == NSEC_PER_SEC, |
| 9 | "This implementation assumes that `clock` is in nanoseconds" |
| 10 | ); |
| 11 | |
| 12 | // `clock` is a weak symbol so that application code can override it. |
| 13 | // We want to use the function in libc, so use the libc-internal name. |
| 14 | clock_t __clock(void); |
| 15 | |
| 16 | clock_t times(struct tms *buffer) { |
| 17 | __wasi_timestamp_t user = __clock(); |
| 18 | *buffer = (struct tms){ |
| 19 | .tms_utime = user, |
| 20 | // WASI doesn't provide a way to spawn a new process, so always 0. |
| 21 | .tms_cutime = 0 |
| 22 | }; |
| 23 | |
| 24 | __wasi_timestamp_t realtime = 0; |
| 25 | (void)__wasi_clock_time_get(__WASI_CLOCKID_MONOTONIC, 0, &realtime); |
| 26 | return realtime; |
| 27 | } |