More code refactoring to integrate Duration

dapps/src/tests/helpers/fetch.rs

@@ -34,7 +34,7 @@ impl FetchControl {
 	}
 
 	pub fn wait_for_requests(&self, len: usize) {
-		const MAX_TIMEOUT_MS: u64 = 5000;
+		const MAX_TIMEOUT: time::Duration = time::Duration::from_millis(5000);
 		const ATTEMPTS: u64 = 10;
 		let mut attempts_left = ATTEMPTS;
 		loop {
@@ -50,7 +50,7 @@ impl FetchControl {
 			} else {
 				attempts_left -= 1;
 				// Should we handle spurious timeouts better?
-				thread::park_timeout(time::Duration::from_millis(MAX_TIMEOUT_MS / ATTEMPTS));
+				thread::park_timeout(MAX_TIMEOUT / ATTEMPTS);
 			}
 		}
 	}

ethcore/light/src/net/load_timer.rs

@@ -48,11 +48,11 @@ pub trait SampleStore: Send + Sync {
 }
 
 // get a hardcoded, arbitrarily determined (but intended overestimate)
-// of the time in nanoseconds to serve a request of the given kind.
+// of the time it takes to serve a request of the given kind.
 //
 // TODO: seed this with empirical data.
-fn hardcoded_serve_time(kind: Kind) -> u64 {
-	match kind {
+fn hardcoded_serve_time(kind: Kind) -> Duration {
+	Duration::new(0, match kind {
 		Kind::Headers => 500_000,
 		Kind::HeaderProof => 500_000,
 		Kind::TransactionIndex => 500_000,
@@ -63,7 +63,7 @@ fn hardcoded_serve_time(kind: Kind) -> u64 {
 		Kind::Code => 1_500_000,
 		Kind::Execution => 250, // per gas.
 		Kind::Signal => 500_000,
-	}
+	})
 }
 
 /// A no-op store.
@@ -114,10 +114,10 @@ impl LoadDistribution {
 		}
 	}
 
-	/// Calculate EMA of load in nanoseconds for a specific request kind.
+	/// Calculate EMA of load for a specific request kind.
 	/// If there is no data for the given request kind, no EMA will be calculated,
 	/// but a hardcoded time will be returned.
-	pub fn expected_time_ns(&self, kind: Kind) -> u64 {
+	pub fn expected_time(&self, kind: Kind) -> Duration {
 		let samples = self.samples.read();
 		samples.get(&kind).and_then(|s| {
 			if s.len() == 0 { return None }
@@ -128,7 +128,9 @@ impl LoadDistribution {
 				(alpha * c as f64) + ((1.0 - alpha) * a)
 			});
 
-			Some(ema as u64)
+			// TODO: use `Duration::from_nanos` once stable (https://github.com/rust-lang/rust/issues/46507)
+			let ema = ema as u64;
+			Some(Duration::new(ema / 1_000_000_000, (ema % 1_000_000_000) as u32))
 		}).unwrap_or_else(move || hardcoded_serve_time(kind))
 	}
 
@@ -223,12 +225,12 @@ mod tests {
 	#[test]
 	fn hardcoded_before_data() {
 		let dist = LoadDistribution::load(&NullStore);
-		assert_eq!(dist.expected_time_ns(Kind::Headers), hardcoded_serve_time(Kind::Headers));
+		assert_eq!(dist.expected_time(Kind::Headers), hardcoded_serve_time(Kind::Headers));
 
 		dist.update(Kind::Headers, Duration::new(0, 100_000), 100);
 		dist.end_period(&NullStore);
 
-		assert_eq!(dist.expected_time_ns(Kind::Headers), 1000);
+		assert_eq!(dist.expected_time(Kind::Headers), Duration::new(0, 1000));
 	}
 
 	#[test]
@@ -244,7 +246,7 @@ mod tests {
 			sum += x;
 			if i == 0 { continue }
 
-			let moving_average = dist.expected_time_ns(Kind::Headers);
+			let moving_average = dist.expected_time(Kind::Headers);
 
 			// should be weighted below the maximum entry.
 			let arith_average = (sum as f64 / (i + 1) as f64) as u64;
@@ -255,9 +257,9 @@ mod tests {
 			// otherwise, the weight should be below the arithmetic mean because the much
 			// smaller previous values are discounted less.
 			if i == 1 {
-				assert_eq!(moving_average, arith_average);
+				assert_eq!(moving_average, Duration::new(0, arith_average));
 			} else {
-				assert!(moving_average < arith_average)
+				assert!(moving_average < Duration::new(0, arith_average))
 			}
 		}
 	}

ethcore/light/src/net/mod.rs

@@ -61,16 +61,16 @@ pub use self::load_timer::{SampleStore, FileStore};
 pub use self::status::{Status, Capabilities, Announcement};
 
 const TIMEOUT: TimerToken = 0;
-const TIMEOUT_INTERVAL_MS: u64 = 1000;
+const TIMEOUT_INTERVAL: Duration = Duration::from_secs(1);
 
 const TICK_TIMEOUT: TimerToken = 1;
-const TICK_TIMEOUT_INTERVAL_MS: u64 = 5000;
+const TICK_TIMEOUT_INTERVAL: Duration = Duration::from_secs(5);
 
 const PROPAGATE_TIMEOUT: TimerToken = 2;
-const PROPAGATE_TIMEOUT_INTERVAL_MS: u64 = 5000;
+const PROPAGATE_TIMEOUT_INTERVAL: Duration = Duration::from_secs(5);
 
 const RECALCULATE_COSTS_TIMEOUT: TimerToken = 3;
-const RECALCULATE_COSTS_INTERVAL_MS: u64 = 60 * 60 * 1000;
+const RECALCULATE_COSTS_INTERVAL: Duration = Duration::from_secs(60 * 60);
 
 // minimum interval between updates.
 const UPDATE_INTERVAL: Duration = Duration::from_millis(5000);
@@ -369,9 +369,9 @@ impl LightProtocol {
 		let sample_store = params.sample_store.unwrap_or_else(|| Box::new(NullStore));
 		let load_distribution = LoadDistribution::load(&*sample_store);
 		let flow_params = FlowParams::from_request_times(
-			|kind| load_distribution.expected_time_ns(kind),
+			|kind| load_distribution.expected_time(kind),
 			params.config.load_share,
-			params.config.max_stored_seconds,
+			Duration::from_secs(params.config.max_stored_seconds),
 		);
 
 		LightProtocol {
@@ -766,9 +766,9 @@ impl LightProtocol {
 		self.load_distribution.end_period(&*self.sample_store);
 
 		let new_params = Arc::new(FlowParams::from_request_times(
-			|kind| self.load_distribution.expected_time_ns(kind),
+			|kind| self.load_distribution.expected_time(kind),
 			self.config.load_share,
-			self.config.max_stored_seconds,
+			Duration::from_secs(self.config.max_stored_seconds),
 		));
 		*self.flow_params.write() = new_params.clone();
 
@@ -1080,13 +1080,13 @@ fn punish(peer: PeerId, io: &IoContext, e: Error) {
 
 impl NetworkProtocolHandler for LightProtocol {
 	fn initialize(&self, io: &NetworkContext, _host_info: &HostInfo) {
-		io.register_timer(TIMEOUT, TIMEOUT_INTERVAL_MS)
+		io.register_timer(TIMEOUT, TIMEOUT_INTERVAL)
 			.expect("Error registering sync timer.");
-		io.register_timer(TICK_TIMEOUT, TICK_TIMEOUT_INTERVAL_MS)
+		io.register_timer(TICK_TIMEOUT, TICK_TIMEOUT_INTERVAL)
 			.expect("Error registering sync timer.");
-		io.register_timer(PROPAGATE_TIMEOUT, PROPAGATE_TIMEOUT_INTERVAL_MS)
+		io.register_timer(PROPAGATE_TIMEOUT, PROPAGATE_TIMEOUT_INTERVAL)
 			.expect("Error registering sync timer.");
-		io.register_timer(RECALCULATE_COSTS_TIMEOUT, RECALCULATE_COSTS_INTERVAL_MS)
+		io.register_timer(RECALCULATE_COSTS_TIMEOUT, RECALCULATE_COSTS_INTERVAL)
 			.expect("Error registering request timer interval token.");
 	}
 

ethcore/light/src/net/request_credits.rs

@@ -235,23 +235,30 @@ impl FlowParams {
 
 	/// Create new flow parameters from ,
 	/// proportion of total capacity which should be given to a peer,
-	/// and number of seconds of stored capacity a peer can accumulate.
-	pub fn from_request_times<F: Fn(::request::Kind) -> u64>(
-		request_time_ns: F,
+	/// and stored capacity a peer can accumulate.
+	pub fn from_request_times<F: Fn(::request::Kind) -> Duration>(
+		request_time: F,
 		load_share: f64,
-		max_stored_seconds: u64
+		max_stored: Duration
 	) -> Self {
 		use request::Kind;
 
 		let load_share = load_share.abs();
 
 		let recharge: u64 = 100_000_000;
-		let max = recharge.saturating_mul(max_stored_seconds);
+		let max = {
+			let sec = max_stored.as_secs().saturating_mul(recharge);
+			let nanos = (max_stored.subsec_nanos() as u64).saturating_mul(recharge) / 1_000_000_000;
+			sec + nanos
+		};
 
 		let cost_for_kind = |kind| {
 			// how many requests we can handle per second
-			let ns = request_time_ns(kind);
-			let second_duration = 1_000_000_000f64 / ns as f64;
+			let rq_dur = request_time(kind);
+			let second_duration = {
+				let as_ns = rq_dur.as_secs() as f64 * 1_000_000_000f64 + rq_dur.subsec_nanos() as f64;
+				1_000_000_000f64 / as_ns
+			};
 
 			// scale by share of the load given to this peer.
 			let serve_per_second = second_duration * load_share;

ethcore/service/src/service.rs

@@ -18,6 +18,7 @@
 
 use std::sync::Arc;
 use std::path::Path;
+use std::time::Duration;
 
 use ansi_term::Colour;
 use io::{IoContext, TimerToken, IoHandler, IoService, IoError};
@@ -140,13 +141,13 @@ struct ClientIoHandler {
 const CLIENT_TICK_TIMER: TimerToken = 0;
 const SNAPSHOT_TICK_TIMER: TimerToken = 1;
 
-const CLIENT_TICK_MS: u64 = 5000;
-const SNAPSHOT_TICK_MS: u64 = 10000;
+const CLIENT_TICK: Duration = Duration::from_secs(5);
+const SNAPSHOT_TICK: Duration = Duration::from_secs(10);
 
 impl IoHandler<ClientIoMessage> for ClientIoHandler {
 	fn initialize(&self, io: &IoContext<ClientIoMessage>) {
-		io.register_timer(CLIENT_TICK_TIMER, CLIENT_TICK_MS).expect("Error registering client timer");
-		io.register_timer(SNAPSHOT_TICK_TIMER, SNAPSHOT_TICK_MS).expect("Error registering snapshot timer");
+		io.register_timer(CLIENT_TICK_TIMER, CLIENT_TICK).expect("Error registering client timer");
+		io.register_timer(SNAPSHOT_TICK_TIMER, SNAPSHOT_TICK).expect("Error registering snapshot timer");
 	}
 
 	fn timeout(&self, _io: &IoContext<ClientIoMessage>, timer: TimerToken) {

ethcore/src/account_provider/mod.rs

@@ -641,8 +641,8 @@ impl AccountProvider {
 	}
 
 	/// Unlocks account temporarily with a timeout.
-	pub fn unlock_account_timed(&self, account: Address, password: String, duration_ms: u32) -> Result<(), Error> {
-		self.unlock_account(account, password, Unlock::Timed(Instant::now() + Duration::from_millis(duration_ms as u64)))
+	pub fn unlock_account_timed(&self, account: Address, password: String, duration: Duration) -> Result<(), Error> {
+		self.unlock_account(account, password, Unlock::Timed(Instant::now() + duration))
 	}
 
 	/// Checks if given account is unlocked
@@ -837,7 +837,7 @@ impl AccountProvider {
 #[cfg(test)]
 mod tests {
 	use super::{AccountProvider, Unlock, DappId};
-	use std::time::Instant;
+	use std::time::{Duration, Instant};
 	use ethstore::ethkey::{Generator, Random, Address};
 	use ethstore::{StoreAccountRef, Derivation};
 	use ethereum_types::H256;
@@ -941,8 +941,8 @@ mod tests {
 		let kp = Random.generate().unwrap();
 		let ap = AccountProvider::transient_provider();
 		assert!(ap.insert_account(kp.secret().clone(), "test").is_ok());
-		assert!(ap.unlock_account_timed(kp.address(), "test1".into(), 60000).is_err());
-		assert!(ap.unlock_account_timed(kp.address(), "test".into(), 60000).is_ok());
+		assert!(ap.unlock_account_timed(kp.address(), "test1".into(), Duration::from_secs(60)).is_err());
+		assert!(ap.unlock_account_timed(kp.address(), "test".into(), Duration::from_secs(60)).is_ok());
 		assert!(ap.sign(kp.address(), None, Default::default()).is_ok());
 		ap.unlocked.write().get_mut(&StoreAccountRef::root(kp.address())).unwrap().unlock = Unlock::Timed(Instant::now());
 		assert!(ap.sign(kp.address(), None, Default::default()).is_err());

ethcore/src/engines/authority_round/mod.rs

@@ -19,7 +19,7 @@
 use std::fmt;
 use std::sync::atomic::{AtomicUsize, AtomicBool, Ordering as AtomicOrdering};
 use std::sync::{Weak, Arc};
-use std::time::{UNIX_EPOCH, Duration};
+use std::time::{UNIX_EPOCH, SystemTime, Duration};
 use std::collections::{BTreeMap, HashSet};
 use std::iter::FromIterator;
 
@@ -536,6 +536,7 @@ fn verify_timestamp(step: &Step, header_step: usize) -> Result<(), BlockError> {
 			// NOTE This error might be returned only in early stage of verification (Stage 1).
 			// Returning it further won't recover the sync process.
 			trace!(target: "engine", "verify_timestamp: block too early");
+			let oob = oob.map(|n| SystemTime::now() + Duration::from_secs(n));
 			Err(BlockError::TemporarilyInvalid(oob).into())
 		},
 		Ok(_) => Ok(()),
@@ -694,8 +695,8 @@ const ENGINE_TIMEOUT_TOKEN: TimerToken = 23;
 impl IoHandler<()> for TransitionHandler {
 	fn initialize(&self, io: &IoContext<()>) {
 		if let Some(engine) = self.engine.upgrade() {
-			let remaining = engine.step.duration_remaining();
-			io.register_timer_once(ENGINE_TIMEOUT_TOKEN, remaining.as_millis())
+			let remaining = engine.step.duration_remaining().as_millis();
+			io.register_timer_once(ENGINE_TIMEOUT_TOKEN, Duration::from_millis(remaining))
 				.unwrap_or_else(|e| warn!(target: "engine", "Failed to start consensus step timer: {}.", e))
 		}
 	}
@@ -711,7 +712,7 @@ impl IoHandler<()> for TransitionHandler {
 				}
 
 				let next_run_at = engine.step.duration_remaining().as_millis() >> 2;
-				io.register_timer_once(ENGINE_TIMEOUT_TOKEN, next_run_at)
+				io.register_timer_once(ENGINE_TIMEOUT_TOKEN, Duration::from_millis(next_run_at))
 					.unwrap_or_else(|e| warn!(target: "engine", "Failed to restart consensus step timer: {}.", e))
 			}
 		}

ethcore/src/engines/transition.rs

@@ -51,8 +51,7 @@ impl<S, M: Machine> TransitionHandler<S, M> where S: Sync + Send + Clone {
 pub const ENGINE_TIMEOUT_TOKEN: TimerToken = 23;
 
 fn set_timeout<S: Sync + Send + Clone>(io: &IoContext<S>, timeout: Duration) {
-	let ms = timeout.as_secs() * 1_000 + timeout.subsec_nanos() as u64 / 1_000_000;
-	io.register_timer_once(ENGINE_TIMEOUT_TOKEN, ms)
+	io.register_timer_once(ENGINE_TIMEOUT_TOKEN, timeout)
 		.unwrap_or_else(|e| warn!(target: "engine", "Failed to set consensus step timeout: {}.", e))
 }
 

ethcore/src/error.rs

@@ -17,6 +17,7 @@
 //! General error types for use in ethcore.
 
 use std::fmt;
+use std::time::SystemTime;
 use kvdb;
 use ethereum_types::{H256, U256, Address, Bloom};
 use util_error::UtilError;
@@ -81,9 +82,9 @@ pub enum BlockError {
 	/// Receipts trie root header field is invalid.
 	InvalidReceiptsRoot(Mismatch<H256>),
 	/// Timestamp header field is invalid.
-	InvalidTimestamp(OutOfBounds<u64>),
+	InvalidTimestamp(OutOfBounds<SystemTime>),
 	/// Timestamp header field is too far in future.
-	TemporarilyInvalid(OutOfBounds<u64>),
+	TemporarilyInvalid(OutOfBounds<SystemTime>),
 	/// Log bloom header field is invalid.
 	InvalidLogBloom(Mismatch<Bloom>),
 	/// Number field of header is invalid.
@@ -125,8 +126,14 @@ impl fmt::Display for BlockError {
 			InvalidSeal => "Block has invalid seal.".into(),
 			InvalidGasLimit(ref oob) => format!("Invalid gas limit: {}", oob),
 			InvalidReceiptsRoot(ref mis) => format!("Invalid receipts trie root in header: {}", mis),
-			InvalidTimestamp(ref oob) => format!("Invalid timestamp in header: {}", oob),
-			TemporarilyInvalid(ref oob) => format!("Future timestamp in header: {}", oob),
+			InvalidTimestamp(ref oob) => {
+				let oob = oob.map(|st| st.elapsed().unwrap_or_default().as_secs());
+				format!("Invalid timestamp in header: {}", oob)
+			},
+			TemporarilyInvalid(ref oob) => {
+				let oob = oob.map(|st| st.elapsed().unwrap_or_default().as_secs());
+				format!("Future timestamp in header: {}", oob)
+			},
 			InvalidLogBloom(ref oob) => format!("Invalid log bloom in header: {}", oob),
 			InvalidNumber(ref mis) => format!("Invalid number in header: {}", mis),
 			RidiculousNumber(ref oob) => format!("Implausible block number. {}", oob),

ethcore/src/verification/verification.rs

@@ -22,7 +22,7 @@
 //! 3. Final verification against the blockchain done before enactment.
 
 use std::collections::HashSet;
-use std::time::{SystemTime, UNIX_EPOCH};
+use std::time::{Duration, SystemTime, UNIX_EPOCH};
 
 use bytes::Bytes;
 use ethereum_types::H256;
@@ -284,11 +284,10 @@ pub fn verify_header_params(header: &Header, engine: &EthEngine, is_full: bool)
 	}
 
 	if is_full {
-		const ACCEPTABLE_DRIFT_SECS: u64 = 15;
-		let now = SystemTime::now().duration_since(UNIX_EPOCH).unwrap_or_default();
-		let max_time = now.as_secs() + ACCEPTABLE_DRIFT_SECS;
-		let invalid_threshold = max_time + ACCEPTABLE_DRIFT_SECS * 9;
-		let timestamp = header.timestamp();
+		const ACCEPTABLE_DRIFT: Duration = Duration::from_secs(15);
+		let max_time = SystemTime::now() + ACCEPTABLE_DRIFT;
+		let invalid_threshold = max_time + ACCEPTABLE_DRIFT * 9;
+		let timestamp = UNIX_EPOCH + Duration::from_secs(header.timestamp());
 
 		if timestamp > invalid_threshold {
 			return Err(From::from(BlockError::InvalidTimestamp(OutOfBounds { max: Some(max_time), min: None, found: timestamp })))
@@ -310,7 +309,9 @@ fn verify_parent(header: &Header, parent: &Header, engine: &EthEngine) -> Result
 	let gas_limit_divisor = engine.params().gas_limit_bound_divisor;
 
 	if !engine.is_timestamp_valid(header.timestamp(), parent.timestamp()) {
-		return Err(From::from(BlockError::InvalidTimestamp(OutOfBounds { max: None, min: Some(parent.timestamp() + 1), found: header.timestamp() })))
+		let min = SystemTime::now() + Duration::from_secs(parent.timestamp() + 1);
+		let found = SystemTime::now() + Duration::from_secs(header.timestamp());
+		return Err(From::from(BlockError::InvalidTimestamp(OutOfBounds { max: None, min: Some(min), found })))
 	}
 	if header.number() != parent.number() + 1 {
 		return Err(From::from(BlockError::InvalidNumber(Mismatch { expected: parent.number() + 1, found: header.number() })));