1 files changed, 24 insertions, 0 deletions
diff --git a/third_party/rust/zeitstempel/src/linux.rs b/third_party/rust/zeitstempel/src/linux.rs
new file mode 100644
index 0000000000..e8fb8500ca
--- /dev/null
+++ b/third_party/rust/zeitstempel/src/linux.rs
@@ -0,0 +1,24 @@
+const NS_PER_S: u64 = 1_000_000_000;
+
+fn timespec_to_ns(ts: libc::timespec) -> u64 {
+    (ts.tv_sec as u64) * NS_PER_S + (ts.tv_nsec as u64)
+}
+
+/// The time from a clock that cannot be set
+/// and represents monotonic time since some unspecified starting point,
+/// that also includes any time that the system is suspended.
+///
+/// See [`clock_gettime`].
+///
+/// [`clock_gettime`]: https://manpages.debian.org/buster/manpages-dev/clock_gettime.3.en.html
+pub fn now_including_suspend() -> u64 {
+    let mut ts = libc::timespec {
+        tv_sec: 0,
+        tv_nsec: 0,
+    };
+    unsafe {
+        libc::clock_gettime(libc::CLOCK_BOOTTIME, &mut ts);
+    }
+
+    timespec_to_ns(ts)
+}