diff options
Diffstat (limited to 'vendor/rayon/src/iter')
| -rw-r--r-- | vendor/rayon/src/iter/collect/test.rs | 2 | ||||
| -rw-r--r-- | vendor/rayon/src/iter/mod.rs | 146 | ||||
| -rw-r--r-- | vendor/rayon/src/iter/plumbing/README.md | 4 | ||||
| -rw-r--r-- | vendor/rayon/src/iter/skip_any.rs | 144 | ||||
| -rw-r--r-- | vendor/rayon/src/iter/skip_any_while.rs | 166 | ||||
| -rw-r--r-- | vendor/rayon/src/iter/take_any.rs | 144 | ||||
| -rw-r--r-- | vendor/rayon/src/iter/take_any_while.rs | 166 | ||||
| -rw-r--r-- | vendor/rayon/src/iter/test.rs | 3 |
8 files changed, 773 insertions, 2 deletions
diff --git a/vendor/rayon/src/iter/collect/test.rs b/vendor/rayon/src/iter/collect/test.rs index b5f676f5d..97bec3f4e 100644 --- a/vendor/rayon/src/iter/collect/test.rs +++ b/vendor/rayon/src/iter/collect/test.rs @@ -76,6 +76,7 @@ fn right_produces_items_with_no_complete() { // Complete is not called by the consumer. Hence,the collection vector is not fully initialized. #[test] +#[cfg_attr(not(panic = "unwind"), ignore)] fn produces_items_with_no_complete() { let counter = DropCounter::default(); let mut v = vec![]; @@ -273,6 +274,7 @@ fn right_panics() { // The left consumer produces fewer items while the right // consumer produces correct number; check that created elements are dropped #[test] +#[cfg_attr(not(panic = "unwind"), ignore)] fn left_produces_fewer_items_drops() { let counter = DropCounter::default(); let mut v = vec![]; diff --git a/vendor/rayon/src/iter/mod.rs b/vendor/rayon/src/iter/mod.rs index 98c93267f..e60ea1633 100644 --- a/vendor/rayon/src/iter/mod.rs +++ b/vendor/rayon/src/iter/mod.rs @@ -141,10 +141,14 @@ mod reduce; mod repeat; mod rev; mod skip; +mod skip_any; +mod skip_any_while; mod splitter; mod step_by; mod sum; mod take; +mod take_any; +mod take_any_while; mod try_fold; mod try_reduce; mod try_reduce_with; @@ -185,9 +189,13 @@ pub use self::{ repeat::{repeat, repeatn, Repeat, RepeatN}, rev::Rev, skip::Skip, + skip_any::SkipAny, + skip_any_while::SkipAnyWhile, splitter::{split, Split}, step_by::StepBy, take::Take, + take_any::TakeAny, + take_any_while::TakeAnyWhile, try_fold::{TryFold, TryFoldWith}, update::Update, while_some::WhileSome, @@ -2194,6 +2202,143 @@ pub trait ParallelIterator: Sized + Send { Intersperse::new(self, element) } + /// Creates an iterator that yields `n` elements from *anywhere* in the original iterator. + /// + /// This is similar to [`IndexedParallelIterator::take`] without being + /// constrained to the "first" `n` of the original iterator order. The + /// taken items will still maintain their relative order where that is + /// visible in `collect`, `reduce`, and similar outputs. + /// + /// # Examples + /// + /// ``` + /// use rayon::prelude::*; + /// + /// let result: Vec<_> = (0..100) + /// .into_par_iter() + /// .filter(|&x| x % 2 == 0) + /// .take_any(5) + /// .collect(); + /// + /// assert_eq!(result.len(), 5); + /// assert!(result.windows(2).all(|w| w[0] < w[1])); + /// ``` + fn take_any(self, n: usize) -> TakeAny<Self> { + TakeAny::new(self, n) + } + + /// Creates an iterator that skips `n` elements from *anywhere* in the original iterator. + /// + /// This is similar to [`IndexedParallelIterator::skip`] without being + /// constrained to the "first" `n` of the original iterator order. The + /// remaining items will still maintain their relative order where that is + /// visible in `collect`, `reduce`, and similar outputs. + /// + /// # Examples + /// + /// ``` + /// use rayon::prelude::*; + /// + /// let result: Vec<_> = (0..100) + /// .into_par_iter() + /// .filter(|&x| x % 2 == 0) + /// .skip_any(5) + /// .collect(); + /// + /// assert_eq!(result.len(), 45); + /// assert!(result.windows(2).all(|w| w[0] < w[1])); + /// ``` + fn skip_any(self, n: usize) -> SkipAny<Self> { + SkipAny::new(self, n) + } + + /// Creates an iterator that takes elements from *anywhere* in the original iterator + /// until the given `predicate` returns `false`. + /// + /// The `predicate` may be anything -- e.g. it could be checking a fact about the item, a + /// global condition unrelated to the item itself, or some combination thereof. + /// + /// If parallel calls to the `predicate` race and give different results, then the + /// `true` results will still take those particular items, while respecting the `false` + /// result from elsewhere to skip any further items. + /// + /// This is similar to [`Iterator::take_while`] without being constrained to the original + /// iterator order. The taken items will still maintain their relative order where that is + /// visible in `collect`, `reduce`, and similar outputs. + /// + /// # Examples + /// + /// ``` + /// use rayon::prelude::*; + /// + /// let result: Vec<_> = (0..100) + /// .into_par_iter() + /// .take_any_while(|x| *x < 50) + /// .collect(); + /// + /// assert!(result.len() <= 50); + /// assert!(result.windows(2).all(|w| w[0] < w[1])); + /// ``` + /// + /// ``` + /// use rayon::prelude::*; + /// use std::sync::atomic::AtomicUsize; + /// use std::sync::atomic::Ordering::Relaxed; + /// + /// // Collect any group of items that sum <= 1000 + /// let quota = AtomicUsize::new(1000); + /// let result: Vec<_> = (0_usize..100) + /// .into_par_iter() + /// .take_any_while(|&x| { + /// quota.fetch_update(Relaxed, Relaxed, |q| q.checked_sub(x)) + /// .is_ok() + /// }) + /// .collect(); + /// + /// let sum = result.iter().sum::<usize>(); + /// assert!(matches!(sum, 902..=1000)); + /// ``` + fn take_any_while<P>(self, predicate: P) -> TakeAnyWhile<Self, P> + where + P: Fn(&Self::Item) -> bool + Sync + Send, + { + TakeAnyWhile::new(self, predicate) + } + + /// Creates an iterator that skips elements from *anywhere* in the original iterator + /// until the given `predicate` returns `false`. + /// + /// The `predicate` may be anything -- e.g. it could be checking a fact about the item, a + /// global condition unrelated to the item itself, or some combination thereof. + /// + /// If parallel calls to the `predicate` race and give different results, then the + /// `true` results will still skip those particular items, while respecting the `false` + /// result from elsewhere to skip any further items. + /// + /// This is similar to [`Iterator::skip_while`] without being constrained to the original + /// iterator order. The remaining items will still maintain their relative order where that is + /// visible in `collect`, `reduce`, and similar outputs. + /// + /// # Examples + /// + /// ``` + /// use rayon::prelude::*; + /// + /// let result: Vec<_> = (0..100) + /// .into_par_iter() + /// .skip_any_while(|x| *x < 50) + /// .collect(); + /// + /// assert!(result.len() >= 50); + /// assert!(result.windows(2).all(|w| w[0] < w[1])); + /// ``` + fn skip_any_while<P>(self, predicate: P) -> SkipAnyWhile<Self, P> + where + P: Fn(&Self::Item) -> bool + Sync + Send, + { + SkipAnyWhile::new(self, predicate) + } + /// Internal method used to define the behavior of this parallel /// iterator. You should not need to call this directly. /// @@ -2419,6 +2564,7 @@ pub trait IndexedParallelIterator: ParallelIterator { /// let r: Vec<Vec<i32>> = a.into_par_iter().chunks(3).collect(); /// assert_eq!(r, vec![vec![1,2,3], vec![4,5,6], vec![7,8,9], vec![10]]); /// ``` + #[track_caller] fn chunks(self, chunk_size: usize) -> Chunks<Self> { assert!(chunk_size != 0, "chunk_size must not be zero"); Chunks::new(self, chunk_size) diff --git a/vendor/rayon/src/iter/plumbing/README.md b/vendor/rayon/src/iter/plumbing/README.md index dbee36ba0..42d22effe 100644 --- a/vendor/rayon/src/iter/plumbing/README.md +++ b/vendor/rayon/src/iter/plumbing/README.md @@ -35,8 +35,8 @@ modes (which is why there are two): more like a `for_each` call: each time a new item is produced, the `consume` method is called with that item. (The traits themselves are a bit more complex, as they support state that can be threaded - through and ultimately reduced.) Unlike producers, there are two - variants of consumers. The difference is how the split is performed: + through and ultimately reduced.) Like producers, there are two + variants of consumers which differ in how the split is performed: - in the `Consumer` trait, splitting is done with `split_at`, which accepts an index where the split should be performed. All iterators can work in this mode. The resulting halves thus have an diff --git a/vendor/rayon/src/iter/skip_any.rs b/vendor/rayon/src/iter/skip_any.rs new file mode 100644 index 000000000..0660a564a --- /dev/null +++ b/vendor/rayon/src/iter/skip_any.rs @@ -0,0 +1,144 @@ +use super::plumbing::*; +use super::*; +use std::sync::atomic::{AtomicUsize, Ordering}; + +/// `SkipAny` is an iterator that skips over `n` elements from anywhere in `I`. +/// This struct is created by the [`skip_any()`] method on [`ParallelIterator`] +/// +/// [`skip_any()`]: trait.ParallelIterator.html#method.skip_any +/// [`ParallelIterator`]: trait.ParallelIterator.html +#[must_use = "iterator adaptors are lazy and do nothing unless consumed"] +#[derive(Clone, Debug)] +pub struct SkipAny<I: ParallelIterator> { + base: I, + count: usize, +} + +impl<I> SkipAny<I> +where + I: ParallelIterator, +{ + /// Creates a new `SkipAny` iterator. + pub(super) fn new(base: I, count: usize) -> Self { + SkipAny { base, count } + } +} + +impl<I> ParallelIterator for SkipAny<I> +where + I: ParallelIterator, +{ + type Item = I::Item; + + fn drive_unindexed<C>(self, consumer: C) -> C::Result + where + C: UnindexedConsumer<Self::Item>, + { + let consumer1 = SkipAnyConsumer { + base: consumer, + count: &AtomicUsize::new(self.count), + }; + self.base.drive_unindexed(consumer1) + } +} + +/// //////////////////////////////////////////////////////////////////////// +/// Consumer implementation + +struct SkipAnyConsumer<'f, C> { + base: C, + count: &'f AtomicUsize, +} + +impl<'f, T, C> Consumer<T> for SkipAnyConsumer<'f, C> +where + C: Consumer<T>, + T: Send, +{ + type Folder = SkipAnyFolder<'f, C::Folder>; + type Reducer = C::Reducer; + type Result = C::Result; + + fn split_at(self, index: usize) -> (Self, Self, Self::Reducer) { + let (left, right, reducer) = self.base.split_at(index); + ( + SkipAnyConsumer { base: left, ..self }, + SkipAnyConsumer { + base: right, + ..self + }, + reducer, + ) + } + + fn into_folder(self) -> Self::Folder { + SkipAnyFolder { + base: self.base.into_folder(), + count: self.count, + } + } + + fn full(&self) -> bool { + self.base.full() + } +} + +impl<'f, T, C> UnindexedConsumer<T> for SkipAnyConsumer<'f, C> +where + C: UnindexedConsumer<T>, + T: Send, +{ + fn split_off_left(&self) -> Self { + SkipAnyConsumer { + base: self.base.split_off_left(), + ..*self + } + } + + fn to_reducer(&self) -> Self::Reducer { + self.base.to_reducer() + } +} + +struct SkipAnyFolder<'f, C> { + base: C, + count: &'f AtomicUsize, +} + +fn checked_decrement(u: &AtomicUsize) -> bool { + u.fetch_update(Ordering::Relaxed, Ordering::Relaxed, |u| u.checked_sub(1)) + .is_ok() +} + +impl<'f, T, C> Folder<T> for SkipAnyFolder<'f, C> +where + C: Folder<T>, +{ + type Result = C::Result; + + fn consume(mut self, item: T) -> Self { + if !checked_decrement(self.count) { + self.base = self.base.consume(item); + } + self + } + + fn consume_iter<I>(mut self, iter: I) -> Self + where + I: IntoIterator<Item = T>, + { + self.base = self.base.consume_iter( + iter.into_iter() + .skip_while(move |_| checked_decrement(self.count)), + ); + self + } + + fn complete(self) -> C::Result { + self.base.complete() + } + + fn full(&self) -> bool { + self.base.full() + } +} diff --git a/vendor/rayon/src/iter/skip_any_while.rs b/vendor/rayon/src/iter/skip_any_while.rs new file mode 100644 index 000000000..28b9e5973 --- /dev/null +++ b/vendor/rayon/src/iter/skip_any_while.rs @@ -0,0 +1,166 @@ +use super::plumbing::*; +use super::*; +use std::fmt; +use std::sync::atomic::{AtomicBool, Ordering}; + +/// `SkipAnyWhile` is an iterator that skips over elements from anywhere in `I` +/// until the callback returns `false`. +/// This struct is created by the [`skip_any_while()`] method on [`ParallelIterator`] +/// +/// [`skip_any_while()`]: trait.ParallelIterator.html#method.skip_any_while +/// [`ParallelIterator`]: trait.ParallelIterator.html +#[must_use = "iterator adaptors are lazy and do nothing unless consumed"] +#[derive(Clone)] +pub struct SkipAnyWhile<I: ParallelIterator, P> { + base: I, + predicate: P, +} + +impl<I: ParallelIterator + fmt::Debug, P> fmt::Debug for SkipAnyWhile<I, P> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.debug_struct("SkipAnyWhile") + .field("base", &self.base) + .finish() + } +} + +impl<I, P> SkipAnyWhile<I, P> +where + I: ParallelIterator, +{ + /// Creates a new `SkipAnyWhile` iterator. + pub(super) fn new(base: I, predicate: P) -> Self { + SkipAnyWhile { base, predicate } + } +} + +impl<I, P> ParallelIterator for SkipAnyWhile<I, P> +where + I: ParallelIterator, + P: Fn(&I::Item) -> bool + Sync + Send, +{ + type Item = I::Item; + + fn drive_unindexed<C>(self, consumer: C) -> C::Result + where + C: UnindexedConsumer<Self::Item>, + { + let consumer1 = SkipAnyWhileConsumer { + base: consumer, + predicate: &self.predicate, + skipping: &AtomicBool::new(true), + }; + self.base.drive_unindexed(consumer1) + } +} + +/// //////////////////////////////////////////////////////////////////////// +/// Consumer implementation + +struct SkipAnyWhileConsumer<'p, C, P> { + base: C, + predicate: &'p P, + skipping: &'p AtomicBool, +} + +impl<'p, T, C, P> Consumer<T> for SkipAnyWhileConsumer<'p, C, P> +where + C: Consumer<T>, + P: Fn(&T) -> bool + Sync, +{ + type Folder = SkipAnyWhileFolder<'p, C::Folder, P>; + type Reducer = C::Reducer; + type Result = C::Result; + + fn split_at(self, index: usize) -> (Self, Self, Self::Reducer) { + let (left, right, reducer) = self.base.split_at(index); + ( + SkipAnyWhileConsumer { base: left, ..self }, + SkipAnyWhileConsumer { + base: right, + ..self + }, + reducer, + ) + } + + fn into_folder(self) -> Self::Folder { + SkipAnyWhileFolder { + base: self.base.into_folder(), + predicate: self.predicate, + skipping: self.skipping, + } + } + + fn full(&self) -> bool { + self.base.full() + } +} + +impl<'p, T, C, P> UnindexedConsumer<T> for SkipAnyWhileConsumer<'p, C, P> +where + C: UnindexedConsumer<T>, + P: Fn(&T) -> bool + Sync, +{ + fn split_off_left(&self) -> Self { + SkipAnyWhileConsumer { + base: self.base.split_off_left(), + ..*self + } + } + + fn to_reducer(&self) -> Self::Reducer { + self.base.to_reducer() + } +} + +struct SkipAnyWhileFolder<'p, C, P> { + base: C, + predicate: &'p P, + skipping: &'p AtomicBool, +} + +fn skip<T>(item: &T, skipping: &AtomicBool, predicate: &impl Fn(&T) -> bool) -> bool { + if !skipping.load(Ordering::Relaxed) { + return false; + } + if predicate(item) { + return true; + } + skipping.store(false, Ordering::Relaxed); + false +} + +impl<'p, T, C, P> Folder<T> for SkipAnyWhileFolder<'p, C, P> +where + C: Folder<T>, + P: Fn(&T) -> bool + 'p, +{ + type Result = C::Result; + + fn consume(mut self, item: T) -> Self { + if !skip(&item, self.skipping, self.predicate) { + self.base = self.base.consume(item); + } + self + } + + fn consume_iter<I>(mut self, iter: I) -> Self + where + I: IntoIterator<Item = T>, + { + self.base = self.base.consume_iter( + iter.into_iter() + .skip_while(move |x| skip(x, self.skipping, self.predicate)), + ); + self + } + + fn complete(self) -> C::Result { + self.base.complete() + } + + fn full(&self) -> bool { + self.base.full() + } +} diff --git a/vendor/rayon/src/iter/take_any.rs b/vendor/rayon/src/iter/take_any.rs new file mode 100644 index 000000000..e3992b383 --- /dev/null +++ b/vendor/rayon/src/iter/take_any.rs @@ -0,0 +1,144 @@ +use super::plumbing::*; +use super::*; +use std::sync::atomic::{AtomicUsize, Ordering}; + +/// `TakeAny` is an iterator that iterates over `n` elements from anywhere in `I`. +/// This struct is created by the [`take_any()`] method on [`ParallelIterator`] +/// +/// [`take_any()`]: trait.ParallelIterator.html#method.take_any +/// [`ParallelIterator`]: trait.ParallelIterator.html +#[must_use = "iterator adaptors are lazy and do nothing unless consumed"] +#[derive(Clone, Debug)] +pub struct TakeAny<I: ParallelIterator> { + base: I, + count: usize, +} + +impl<I> TakeAny<I> +where + I: ParallelIterator, +{ + /// Creates a new `TakeAny` iterator. + pub(super) fn new(base: I, count: usize) -> Self { + TakeAny { base, count } + } +} + +impl<I> ParallelIterator for TakeAny<I> +where + I: ParallelIterator, +{ + type Item = I::Item; + + fn drive_unindexed<C>(self, consumer: C) -> C::Result + where + C: UnindexedConsumer<Self::Item>, + { + let consumer1 = TakeAnyConsumer { + base: consumer, + count: &AtomicUsize::new(self.count), + }; + self.base.drive_unindexed(consumer1) + } +} + +/// //////////////////////////////////////////////////////////////////////// +/// Consumer implementation + +struct TakeAnyConsumer<'f, C> { + base: C, + count: &'f AtomicUsize, +} + +impl<'f, T, C> Consumer<T> for TakeAnyConsumer<'f, C> +where + C: Consumer<T>, + T: Send, +{ + type Folder = TakeAnyFolder<'f, C::Folder>; + type Reducer = C::Reducer; + type Result = C::Result; + + fn split_at(self, index: usize) -> (Self, Self, Self::Reducer) { + let (left, right, reducer) = self.base.split_at(index); + ( + TakeAnyConsumer { base: left, ..self }, + TakeAnyConsumer { + base: right, + ..self + }, + reducer, + ) + } + + fn into_folder(self) -> Self::Folder { + TakeAnyFolder { + base: self.base.into_folder(), + count: self.count, + } + } + + fn full(&self) -> bool { + self.count.load(Ordering::Relaxed) == 0 || self.base.full() + } +} + +impl<'f, T, C> UnindexedConsumer<T> for TakeAnyConsumer<'f, C> +where + C: UnindexedConsumer<T>, + T: Send, +{ + fn split_off_left(&self) -> Self { + TakeAnyConsumer { + base: self.base.split_off_left(), + ..*self + } + } + + fn to_reducer(&self) -> Self::Reducer { + self.base.to_reducer() + } +} + +struct TakeAnyFolder<'f, C> { + base: C, + count: &'f AtomicUsize, +} + +fn checked_decrement(u: &AtomicUsize) -> bool { + u.fetch_update(Ordering::Relaxed, Ordering::Relaxed, |u| u.checked_sub(1)) + .is_ok() +} + +impl<'f, T, C> Folder<T> for TakeAnyFolder<'f, C> +where + C: Folder<T>, +{ + type Result = C::Result; + + fn consume(mut self, item: T) -> Self { + if checked_decrement(self.count) { + self.base = self.base.consume(item); + } + self + } + + fn consume_iter<I>(mut self, iter: I) -> Self + where + I: IntoIterator<Item = T>, + { + self.base = self.base.consume_iter( + iter.into_iter() + .take_while(move |_| checked_decrement(self.count)), + ); + self + } + + fn complete(self) -> C::Result { + self.base.complete() + } + + fn full(&self) -> bool { + self.count.load(Ordering::Relaxed) == 0 || self.base.full() + } +} diff --git a/vendor/rayon/src/iter/take_any_while.rs b/vendor/rayon/src/iter/take_any_while.rs new file mode 100644 index 000000000..e6a91afab --- /dev/null +++ b/vendor/rayon/src/iter/take_any_while.rs @@ -0,0 +1,166 @@ +use super::plumbing::*; +use super::*; +use std::fmt; +use std::sync::atomic::{AtomicBool, Ordering}; + +/// `TakeAnyWhile` is an iterator that iterates over elements from anywhere in `I` +/// until the callback returns `false`. +/// This struct is created by the [`take_any_while()`] method on [`ParallelIterator`] +/// +/// [`take_any_while()`]: trait.ParallelIterator.html#method.take_any_while +/// [`ParallelIterator`]: trait.ParallelIterator.html +#[must_use = "iterator adaptors are lazy and do nothing unless consumed"] +#[derive(Clone)] +pub struct TakeAnyWhile<I: ParallelIterator, P> { + base: I, + predicate: P, +} + +impl<I: ParallelIterator + fmt::Debug, P> fmt::Debug for TakeAnyWhile<I, P> { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.debug_struct("TakeAnyWhile") + .field("base", &self.base) + .finish() + } +} + +impl<I, P> TakeAnyWhile<I, P> +where + I: ParallelIterator, +{ + /// Creates a new `TakeAnyWhile` iterator. + pub(super) fn new(base: I, predicate: P) -> Self { + TakeAnyWhile { base, predicate } + } +} + +impl<I, P> ParallelIterator for TakeAnyWhile<I, P> +where + I: ParallelIterator, + P: Fn(&I::Item) -> bool + Sync + Send, +{ + type Item = I::Item; + + fn drive_unindexed<C>(self, consumer: C) -> C::Result + where + C: UnindexedConsumer<Self::Item>, + { + let consumer1 = TakeAnyWhileConsumer { + base: consumer, + predicate: &self.predicate, + taking: &AtomicBool::new(true), + }; + self.base.drive_unindexed(consumer1) + } +} + +/// //////////////////////////////////////////////////////////////////////// +/// Consumer implementation + +struct TakeAnyWhileConsumer<'p, C, P> { + base: C, + predicate: &'p P, + taking: &'p AtomicBool, +} + +impl<'p, T, C, P> Consumer<T> for TakeAnyWhileConsumer<'p, C, P> +where + C: Consumer<T>, + P: Fn(&T) -> bool + Sync, +{ + type Folder = TakeAnyWhileFolder<'p, C::Folder, P>; + type Reducer = C::Reducer; + type Result = C::Result; + + fn split_at(self, index: usize) -> (Self, Self, Self::Reducer) { + let (left, right, reducer) = self.base.split_at(index); + ( + TakeAnyWhileConsumer { base: left, ..self }, + TakeAnyWhileConsumer { + base: right, + ..self + }, + reducer, + ) + } + + fn into_folder(self) -> Self::Folder { + TakeAnyWhileFolder { + base: self.base.into_folder(), + predicate: self.predicate, + taking: self.taking, + } + } + + fn full(&self) -> bool { + !self.taking.load(Ordering::Relaxed) || self.base.full() + } +} + +impl<'p, T, C, P> UnindexedConsumer<T> for TakeAnyWhileConsumer<'p, C, P> +where + C: UnindexedConsumer<T>, + P: Fn(&T) -> bool + Sync, +{ + fn split_off_left(&self) -> Self { + TakeAnyWhileConsumer { + base: self.base.split_off_left(), + ..*self + } + } + + fn to_reducer(&self) -> Self::Reducer { + self.base.to_reducer() + } +} + +struct TakeAnyWhileFolder<'p, C, P> { + base: C, + predicate: &'p P, + taking: &'p AtomicBool, +} + +fn take<T>(item: &T, taking: &AtomicBool, predicate: &impl Fn(&T) -> bool) -> bool { + if !taking.load(Ordering::Relaxed) { + return false; + } + if predicate(item) { + return true; + } + taking.store(false, Ordering::Relaxed); + false +} + +impl<'p, T, C, P> Folder<T> for TakeAnyWhileFolder<'p, C, P> +where + C: Folder<T>, + P: Fn(&T) -> bool + 'p, +{ + type Result = C::Result; + + fn consume(mut self, item: T) -> Self { + if take(&item, self.taking, self.predicate) { + self.base = self.base.consume(item); + } + self + } + + fn consume_iter<I>(mut self, iter: I) -> Self + where + I: IntoIterator<Item = T>, + { + self.base = self.base.consume_iter( + iter.into_iter() + .take_while(move |x| take(x, self.taking, self.predicate)), + ); + self + } + + fn complete(self) -> C::Result { + self.base.complete() + } + + fn full(&self) -> bool { + !self.taking.load(Ordering::Relaxed) || self.base.full() + } +} diff --git a/vendor/rayon/src/iter/test.rs b/vendor/rayon/src/iter/test.rs index 94323d79d..c72068df7 100644 --- a/vendor/rayon/src/iter/test.rs +++ b/vendor/rayon/src/iter/test.rs @@ -468,6 +468,7 @@ fn check_cmp_gt_to_seq() { } #[test] +#[cfg_attr(any(target_os = "emscripten", target_family = "wasm"), ignore)] fn check_cmp_short_circuit() { // We only use a single thread in order to make the short-circuit behavior deterministic. let pool = ThreadPoolBuilder::new().num_threads(1).build().unwrap(); @@ -497,6 +498,7 @@ fn check_cmp_short_circuit() { } #[test] +#[cfg_attr(any(target_os = "emscripten", target_family = "wasm"), ignore)] fn check_partial_cmp_short_circuit() { // We only use a single thread to make the short-circuit behavior deterministic. let pool = ThreadPoolBuilder::new().num_threads(1).build().unwrap(); @@ -526,6 +528,7 @@ fn check_partial_cmp_short_circuit() { } #[test] +#[cfg_attr(any(target_os = "emscripten", target_family = "wasm"), ignore)] fn check_partial_cmp_nan_short_circuit() { // We only use a single thread to make the short-circuit behavior deterministic. let pool = ThreadPoolBuilder::new().num_threads(1).build().unwrap(); |