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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/rayon/tests/sort-panic-safe.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/rayon/tests/sort-panic-safe.rs')
-rw-r--r--vendor/rayon/tests/sort-panic-safe.rs164
1 files changed, 0 insertions, 164 deletions
diff --git a/vendor/rayon/tests/sort-panic-safe.rs b/vendor/rayon/tests/sort-panic-safe.rs
deleted file mode 100644
index 95ef88d..0000000
--- a/vendor/rayon/tests/sort-panic-safe.rs
+++ /dev/null
@@ -1,164 +0,0 @@
-use rand::distributions::Uniform;
-use rand::{thread_rng, Rng};
-use rayon::prelude::*;
-use std::cell::Cell;
-use std::cmp::{self, Ordering};
-use std::panic;
-use std::sync::atomic::AtomicUsize;
-use std::sync::atomic::Ordering::Relaxed;
-use std::thread;
-
-const ZERO: AtomicUsize = AtomicUsize::new(0);
-const LEN: usize = 20_000;
-
-static VERSIONS: AtomicUsize = ZERO;
-
-static DROP_COUNTS: [AtomicUsize; LEN] = [ZERO; LEN];
-
-#[derive(Clone, Eq)]
-struct DropCounter {
- x: u32,
- id: usize,
- version: Cell<usize>,
-}
-
-impl PartialEq for DropCounter {
- fn eq(&self, other: &Self) -> bool {
- self.partial_cmp(other) == Some(Ordering::Equal)
- }
-}
-
-impl PartialOrd for DropCounter {
- fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
- self.version.set(self.version.get() + 1);
- other.version.set(other.version.get() + 1);
- VERSIONS.fetch_add(2, Relaxed);
- self.x.partial_cmp(&other.x)
- }
-}
-
-impl Ord for DropCounter {
- fn cmp(&self, other: &Self) -> Ordering {
- self.partial_cmp(other).unwrap()
- }
-}
-
-impl Drop for DropCounter {
- fn drop(&mut self) {
- DROP_COUNTS[self.id].fetch_add(1, Relaxed);
- VERSIONS.fetch_sub(self.version.get(), Relaxed);
- }
-}
-
-macro_rules! test {
- ($input:ident, $func:ident) => {
- let len = $input.len();
-
- // Work out the total number of comparisons required to sort
- // this array...
- let count = AtomicUsize::new(0);
- $input.to_owned().$func(|a, b| {
- count.fetch_add(1, Relaxed);
- a.cmp(b)
- });
-
- let mut panic_countdown = count.load(Relaxed);
- let step = if len <= 100 {
- 1
- } else {
- cmp::max(1, panic_countdown / 10)
- };
-
- // ... and then panic after each `step` comparisons.
- loop {
- // Refresh the counters.
- VERSIONS.store(0, Relaxed);
- for i in 0..len {
- DROP_COUNTS[i].store(0, Relaxed);
- }
-
- let v = $input.to_owned();
- let _ = thread::spawn(move || {
- let mut v = v;
- let panic_countdown = AtomicUsize::new(panic_countdown);
- v.$func(|a, b| {
- if panic_countdown.fetch_sub(1, Relaxed) == 1 {
- SILENCE_PANIC.with(|s| s.set(true));
- panic!();
- }
- a.cmp(b)
- })
- })
- .join();
-
- // Check that the number of things dropped is exactly
- // what we expect (i.e. the contents of `v`).
- for (i, c) in DROP_COUNTS.iter().enumerate().take(len) {
- let count = c.load(Relaxed);
- assert!(
- count == 1,
- "found drop count == {} for i == {}, len == {}",
- count,
- i,
- len
- );
- }
-
- // Check that the most recent versions of values were dropped.
- assert_eq!(VERSIONS.load(Relaxed), 0);
-
- if panic_countdown < step {
- break;
- }
- panic_countdown -= step;
- }
- };
-}
-
-thread_local!(static SILENCE_PANIC: Cell<bool> = Cell::new(false));
-
-#[test]
-#[cfg_attr(any(target_os = "emscripten", target_family = "wasm"), ignore)]
-fn sort_panic_safe() {
- let prev = panic::take_hook();
- panic::set_hook(Box::new(move |info| {
- if !SILENCE_PANIC.with(Cell::get) {
- prev(info);
- }
- }));
-
- for &len in &[1, 2, 3, 4, 5, 10, 20, 100, 500, 5_000, 20_000] {
- let len_dist = Uniform::new(0, len);
- for &modulus in &[5, 30, 1_000, 20_000] {
- for &has_runs in &[false, true] {
- let mut rng = thread_rng();
- let mut input = (0..len)
- .map(|id| DropCounter {
- x: rng.gen_range(0..modulus),
- id,
- version: Cell::new(0),
- })
- .collect::<Vec<_>>();
-
- if has_runs {
- for c in &mut input {
- c.x = c.id as u32;
- }
-
- for _ in 0..5 {
- let a = rng.sample(&len_dist);
- let b = rng.sample(&len_dist);
- if a < b {
- input[a..b].reverse();
- } else {
- input.swap(a, b);
- }
- }
- }
-
- test!(input, par_sort_by);
- test!(input, par_sort_unstable_by);
- }
- }
- }
-}