From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 vendor/fixedbitset/benches/benches.rs | 133 ++++++++++++++++++++++++++++++++++
 1 file changed, 133 insertions(+)
 create mode 100644 vendor/fixedbitset/benches/benches.rs

(limited to 'vendor/fixedbitset/benches')

diff --git a/vendor/fixedbitset/benches/benches.rs b/vendor/fixedbitset/benches/benches.rs
new file mode 100644
index 000000000..ac999b014
--- /dev/null
+++ b/vendor/fixedbitset/benches/benches.rs
@@ -0,0 +1,133 @@
+#![feature(test)]
+
+extern crate test;
+extern crate fixedbitset;
+use test::Bencher;
+use fixedbitset::{FixedBitSet};
+use std::mem::size_of;
+
+#[inline]
+fn iter_ones_using_contains<F: FnMut(usize)>(fb: &FixedBitSet, f: &mut F) {
+    for bit in 0 .. fb.len() {
+       if fb.contains(bit) {
+           f(bit);
+       }
+    }
+}
+
+#[inline]
+fn iter_ones_using_slice_directly<F: FnMut(usize)>(fb: &FixedBitSet, f: &mut F) {
+    for (block_idx, &block) in fb.as_slice().iter().enumerate() {
+        let mut bit_pos = block_idx * size_of::<u32>() * 8;
+        let mut block: u32 = block;
+
+        while block != 0 {
+            if (block & 1) == 1 {
+                f(bit_pos);
+            }
+            block = block >> 1;
+            bit_pos += 1;
+        }
+    }
+}
+
+#[bench]
+fn bench_iter_ones_using_contains_all_zeros(b: &mut Bencher) {
+    const N: usize = 1_000_000;
+    let fb = FixedBitSet::with_capacity(N);
+
+    b.iter(|| {
+        let mut count = 0;
+        iter_ones_using_contains(&fb, &mut |_bit| count += 1);
+        count
+    });
+}
+
+#[bench]
+fn bench_iter_ones_using_contains_all_ones(b: &mut Bencher) {
+    const N: usize = 1_000_000;
+    let mut fb = FixedBitSet::with_capacity(N);
+    fb.insert_range(..);
+
+    b.iter(|| {
+        let mut count = 0;
+        iter_ones_using_contains(&fb, &mut |_bit| count += 1);
+        count
+    });
+}
+
+#[bench]
+fn bench_iter_ones_using_slice_directly_all_zero(b: &mut Bencher) {
+    const N: usize = 1_000_000;
+    let fb = FixedBitSet::with_capacity(N);
+
+    b.iter(|| {
+       let mut count = 0;
+       iter_ones_using_slice_directly(&fb, &mut |_bit| count += 1);
+       count
+    });
+}
+
+#[bench]
+fn bench_iter_ones_using_slice_directly_all_ones(b: &mut Bencher) {
+    const N: usize = 1_000_000;
+    let mut fb = FixedBitSet::with_capacity(N);
+    fb.insert_range(..);
+
+    b.iter(|| {
+       let mut count = 0;
+       iter_ones_using_slice_directly(&fb, &mut |_bit| count += 1);
+       count
+    });
+}
+
+#[bench]
+fn bench_iter_ones_all_zeros(b: &mut Bencher) {
+    const N: usize = 1_000_000;
+    let fb = FixedBitSet::with_capacity(N);
+
+    b.iter(|| {
+        let mut count = 0;
+        for _ in fb.ones() {
+            count += 1;
+        }
+        count
+    });
+}
+
+#[bench]
+fn bench_iter_ones_all_ones(b: &mut Bencher) {
+    const N: usize = 1_000_000;
+    let mut fb = FixedBitSet::with_capacity(N);
+    fb.insert_range(..);
+
+    b.iter(|| {
+        let mut count = 0;
+        for _ in fb.ones() {
+            count += 1;
+        }
+        count
+    });
+}
+
+#[bench]
+fn bench_insert_range(b: &mut Bencher) {
+    const N: usize = 1_000_000;
+    let mut fb = FixedBitSet::with_capacity(N);
+
+    b.iter(|| {
+        fb.insert_range(..)
+    });
+}
+
+#[bench]
+fn bench_insert_range_using_loop(b: &mut Bencher) {
+    const N: usize = 1_000_000;
+    let mut fb = FixedBitSet::with_capacity(N);
+
+    b.iter(|| {
+        for i in 0..N {
+            fb.insert(i);
+        }
+    });
+}
-- 
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