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authorVivian Lim <[email protected]>2021-02-06 22:11:59 -0800
committerVivian Lim <[email protected]>2021-02-06 22:11:59 -0800
commit64423f0e34cc4a7d78c15b345b3b8f58243d8286 (patch)
treecc20e2e7f0fc35abf470e20e61d3d48f0d954f3b /ctr-std/src/sys/horizon/time.rs
parentSupport libctru 2.0 (diff)
downloadctru-rs-64423f0e34cc4a7d78c15b345b3b8f58243d8286.tar.xz
ctru-rs-64423f0e34cc4a7d78c15b345b3b8f58243d8286.zip
Delete ctr-std to use my fork of the rust repo instead
Diffstat (limited to 'ctr-std/src/sys/horizon/time.rs')
-rw-r--r--ctr-std/src/sys/horizon/time.rs285
1 files changed, 0 insertions, 285 deletions
diff --git a/ctr-std/src/sys/horizon/time.rs b/ctr-std/src/sys/horizon/time.rs
deleted file mode 100644
index aa66cf1..0000000
--- a/ctr-std/src/sys/horizon/time.rs
+++ /dev/null
@@ -1,285 +0,0 @@
-// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-use cmp::Ordering;
-use libc;
-use time::Duration;
-use core::hash::{Hash, Hasher};
-
-pub use self::inner::{Instant, SystemTime, UNIX_EPOCH};
-
-const NSEC_PER_SEC: u64 = 1_000_000_000;
-
-#[derive(Copy, Clone)]
-struct Timespec {
- t: libc::timespec,
-}
-
-impl Timespec {
- fn sub_timespec(&self, other: &Timespec) -> Result<Duration, Duration> {
- if self >= other {
- Ok(if self.t.tv_nsec >= other.t.tv_nsec {
- Duration::new((self.t.tv_sec - other.t.tv_sec) as u64,
- (self.t.tv_nsec - other.t.tv_nsec) as u32)
- } else {
- Duration::new((self.t.tv_sec - 1 - other.t.tv_sec) as u64,
- self.t.tv_nsec as u32 + (NSEC_PER_SEC as u32) -
- other.t.tv_nsec as u32)
- })
- } else {
- match other.sub_timespec(self) {
- Ok(d) => Err(d),
- Err(d) => Ok(d),
- }
- }
- }
-
- fn add_duration(&self, other: &Duration) -> Timespec {
- let secs = (self.t.tv_sec as i64).checked_add(other.as_secs() as i64);
- let mut secs = secs.expect("overflow when adding duration to time");
-
- // Nano calculations can't overflow because nanos are <1B which fit
- // in a u32.
- let mut nsec = other.subsec_nanos() + self.t.tv_nsec as u32;
- if nsec >= NSEC_PER_SEC as u32 {
- nsec -= NSEC_PER_SEC as u32;
- secs = secs.checked_add(1).expect("overflow when adding \
- duration to time");
- }
- Timespec {
- t: libc::timespec {
- tv_sec: secs as libc::time_t,
- tv_nsec: nsec as libc::c_long,
- },
- }
- }
-
- fn sub_duration(&self, other: &Duration) -> Timespec {
- let secs = (self.t.tv_sec as i64).checked_sub(other.as_secs() as i64);
- let mut secs = secs.expect("overflow when subtracting duration \
- from time");
-
- // Similar to above, nanos can't overflow.
- let mut nsec = self.t.tv_nsec as i32 - other.subsec_nanos() as i32;
- if nsec < 0 {
- nsec += NSEC_PER_SEC as i32;
- secs = secs.checked_sub(1).expect("overflow when subtracting \
- duration from time");
- }
- Timespec {
- t: libc::timespec {
- tv_sec: secs as libc::time_t,
- tv_nsec: nsec as libc::c_long,
- },
- }
- }
-}
-
-impl PartialEq for Timespec {
- fn eq(&self, other: &Timespec) -> bool {
- self.t.tv_sec == other.t.tv_sec && self.t.tv_nsec == other.t.tv_nsec
- }
-}
-
-impl Eq for Timespec {}
-
-impl PartialOrd for Timespec {
- fn partial_cmp(&self, other: &Timespec) -> Option<Ordering> {
- Some(self.cmp(other))
- }
-}
-
-impl Ord for Timespec {
- fn cmp(&self, other: &Timespec) -> Ordering {
- let me = (self.t.tv_sec, self.t.tv_nsec);
- let other = (other.t.tv_sec, other.t.tv_nsec);
- me.cmp(&other)
- }
-}
-
-impl Hash for Timespec {
- fn hash<H : Hasher>(&self, state: &mut H) {
- self.t.tv_sec.hash(state);
- self.t.tv_nsec.hash(state);
- }
-}
-
-mod inner {
- use fmt;
- use libc;
- use sync::Once;
- use sys::cvt;
- use sys_common::mul_div_u64;
- use time::Duration;
-
- use super::NSEC_PER_SEC;
- use super::Timespec;
-
- use libctru;
-
- #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
- pub struct Instant {
- t: u64
- }
-
- #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
- pub struct SystemTime {
- t: Timespec,
- }
-
- pub const UNIX_EPOCH: SystemTime = SystemTime {
- t: Timespec {
- t: libc::timespec {
- tv_sec: 0,
- tv_nsec: 0,
- },
- },
- };
-
- impl Instant {
- pub fn now() -> Instant {
- Instant { t: ctr_absolute_time() }
- }
-
- pub fn sub_instant(&self, other: &Instant) -> Duration {
- let info = info();
- let diff = self.t.checked_sub(other.t)
- .expect("second instant is later than self");
- let nanos = mul_div_u64(diff, info.numer as u64, info.denom as u64);
- Duration::new(nanos / NSEC_PER_SEC, (nanos % NSEC_PER_SEC) as u32)
- }
-
- pub fn add_duration(&self, other: &Duration) -> Instant {
- Instant {
- t: self.t.checked_add(dur2intervals(other))
- .expect("overflow when adding duration to instant"),
- }
- }
-
- pub fn sub_duration(&self, other: &Duration) -> Instant {
- Instant {
- t: self.t.checked_sub(dur2intervals(other))
- .expect("overflow when adding duration to instant"),
- }
- }
- }
-
- // The initial system tick after which all Instants occur
- static mut TICK: u64 = 0;
-
- // A source of monotonic time based on ticks of the 3DS CPU. Returns the
- // number of system ticks elapsed since an arbitrary point in the past
- fn ctr_absolute_time() -> u64 {
- let first_tick = get_first_tick();
- let current_tick = get_system_tick();
- current_tick - first_tick
- }
-
- // The first time this function is called, it generates and returns the
- // initial system tick used to create Instants
- //
- // subsequent calls to this function return the previously generated
- // tick value
- fn get_first_tick() -> u64 {
- static ONCE: Once = Once::new();
- unsafe {
- ONCE.call_once(|| {
- TICK = get_system_tick();
- });
- TICK
- }
- }
-
- // Gets the current system tick
- #[inline]
- fn get_system_tick() -> u64 {
- unsafe { libctru::svcGetSystemTick() }
- }
-
- // A struct representing the clock speed of the 3DS
- struct CtrClockInfo {
- numer: u32,
- denom: u32,
- }
-
- // Initializes the CtrClockInfo struct
- //
- // Note that svcGetSystemTick always runs at 268MHz (268,111,856Hz), even
- // on a New 3DS running in 804MHz mode
- //
- // See https://www.3dbrew.org/wiki/Hardware#Common_hardware
- fn info() -> &'static CtrClockInfo {
- static INFO: CtrClockInfo = CtrClockInfo {
- numer: 1_000_000_000,
- denom: 268_111_856,
- };
- &INFO
- }
-
- fn dur2intervals(dur: &Duration) -> u64 {
- let info = info();
- let nanos = dur.as_secs().checked_mul(NSEC_PER_SEC).and_then(|nanos| {
- nanos.checked_add(dur.subsec_nanos() as u64)
- }).expect("overflow converting duration to nanoseconds");
- mul_div_u64(nanos, info.denom as u64, info.numer as u64)
- }
-
- impl SystemTime {
- pub fn now() -> SystemTime {
- use ptr;
-
- let mut s = libc::timeval {
- tv_sec: 0,
- tv_usec: 0,
- };
- cvt(unsafe {
- libc::gettimeofday(&mut s, ptr::null_mut())
- }).unwrap();
- return SystemTime::from(s)
- }
-
- pub fn sub_time(&self, other: &SystemTime)
- -> Result<Duration, Duration> {
- self.t.sub_timespec(&other.t)
- }
-
- pub fn add_duration(&self, other: &Duration) -> SystemTime {
- SystemTime { t: self.t.add_duration(other) }
- }
-
- pub fn sub_duration(&self, other: &Duration) -> SystemTime {
- SystemTime { t: self.t.sub_duration(other) }
- }
- }
-
- impl From<libc::timeval> for SystemTime {
- fn from(t: libc::timeval) -> SystemTime {
- SystemTime::from(libc::timespec {
- tv_sec: t.tv_sec,
- tv_nsec: (t.tv_usec * 1000) as libc::c_long,
- })
- }
- }
-
- impl From<libc::timespec> for SystemTime {
- fn from(t: libc::timespec) -> SystemTime {
- SystemTime { t: Timespec { t: t } }
- }
- }
-
- impl fmt::Debug for SystemTime {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- f.debug_struct("SystemTime")
- .field("tv_sec", &self.t.t.tv_sec)
- .field("tv_nsec", &self.t.t.tv_nsec)
- .finish()
- }
- }
-} \ No newline at end of file