diff options
Diffstat (limited to 'third_party/rust/zeitstempel/src/mac.rs')
| -rw-r--r-- | third_party/rust/zeitstempel/src/mac.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/third_party/rust/zeitstempel/src/mac.rs b/third_party/rust/zeitstempel/src/mac.rs new file mode 100644 index 0000000000..701daa1696 --- /dev/null +++ b/third_party/rust/zeitstempel/src/mac.rs @@ -0,0 +1,17 @@ +use libc::clockid_t; + +extern "C" { + fn clock_gettime_nsec_np(clock_id: clockid_t) -> u64; +} + +const CLOCK_MONOTONIC_RAW: clockid_t = 4; + +/// The time from a clock that increments monotonically, +/// tracking the time since an arbitrary point. +/// +/// See [`clock_gettime_nsec_np`]. +/// +/// [`clock_gettime_nsec_np`]: https://opensource.apple.com/source/Libc/Libc-1158.1.2/gen/clock_gettime.3.auto.html +pub fn now_including_suspend() -> u64 { + unsafe { clock_gettime_nsec_np(CLOCK_MONOTONIC_RAW) } +} |