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-rw-r--r--rand/rand_jitter/src/platform.rs44
1 files changed, 0 insertions, 44 deletions
diff --git a/rand/rand_jitter/src/platform.rs b/rand/rand_jitter/src/platform.rs
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index 8e3d0fb..0000000
--- a/rand/rand_jitter/src/platform.rs
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-// Copyright 2013-2015 The Rust Project Developers.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#[cfg(not(any(target_os = "macos", target_os = "ios", target_os = "windows")))]
-pub fn get_nstime() -> u64 {
- use std::time::{SystemTime, UNIX_EPOCH};
-
- let dur = SystemTime::now().duration_since(UNIX_EPOCH).unwrap();
- // The correct way to calculate the current time is
- // `dur.as_secs() * 1_000_000_000 + dur.subsec_nanos() as u64`
- // But this is faster, and the difference in terms of entropy is
- // negligible (log2(10^9) == 29.9).
- dur.as_secs() << 30 | dur.subsec_nanos() as u64
-}
-
-#[cfg(any(target_os = "macos", target_os = "ios"))]
-pub fn get_nstime() -> u64 {
- use libc;
-
- // On Mac OS and iOS std::time::SystemTime only has 1000ns resolution.
- // We use `mach_absolute_time` instead. This provides a CPU dependent
- // unit, to get real nanoseconds the result should by multiplied by
- // numer/denom from `mach_timebase_info`.
- // But we are not interested in the exact nanoseconds, just entropy. So
- // we use the raw result.
- unsafe { libc::mach_absolute_time() }
-}
-
-#[cfg(target_os = "windows")]
-pub fn get_nstime() -> u64 {
- use winapi;
-
- unsafe {
- let mut t = super::mem::zeroed();
- winapi::um::profileapi::QueryPerformanceCounter(&mut t);
- *t.QuadPart() as u64
- }
-}