Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 80 insertions, 0 deletions

diff --git a/third_party/rust/triple_buffer/benches/benchmarks.rs b/third_party/rust/triple_buffer/benches/benchmarks.rs
new file mode 100644
index 0000000000..c97d1db19e
--- /dev/null
+++ b/third_party/rust/triple_buffer/benches/benchmarks.rs
@@ -0,0 +1,80 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use triple_buffer::TripleBuffer;
+
+pub fn benchmark(c: &mut Criterion) {
+    let (mut input, mut output) = TripleBuffer::<u8>::default().split();
+
+    {
+        let mut uncontended = c.benchmark_group("uncontended");
+        uncontended.bench_function("read output", |b| b.iter(|| *output.output_buffer()));
+        uncontended.bench_function("clean update", |b| {
+            b.iter(|| {
+                output.update();
+            })
+        });
+        uncontended.bench_function("clean receive", |b| b.iter(|| *output.read()));
+        uncontended.bench_function("write input", |b| {
+            b.iter(|| {
+                *input.input_buffer() = black_box(0);
+            })
+        });
+        uncontended.bench_function("publish", |b| {
+            b.iter(|| {
+                input.publish();
+            })
+        });
+        uncontended.bench_function("send", |b| b.iter(|| input.write(black_box(0))));
+        uncontended.bench_function("publish + dirty update", |b| {
+            b.iter(|| {
+                input.publish();
+                output.update();
+            })
+        });
+        uncontended.bench_function("transmit", |b| {
+            b.iter(|| {
+                input.write(black_box(0));
+                *output.read()
+            })
+        });
+    }
+
+    {
+        let mut read_contended = c.benchmark_group("read contention");
+        testbench::run_under_contention(
+            || black_box(*output.read()),
+            || {
+                read_contended.bench_function("write input", |b| {
+                    b.iter(|| {
+                        *input.input_buffer() = black_box(0);
+                    })
+                });
+                read_contended.bench_function("publish", |b| {
+                    b.iter(|| {
+                        input.publish();
+                    })
+                });
+                read_contended.bench_function("send", |b| b.iter(|| input.write(black_box(0))));
+            },
+        );
+    }
+
+    {
+        let mut write_contended = c.benchmark_group("write contention");
+        testbench::run_under_contention(
+            || input.write(black_box(0)),
+            || {
+                write_contended
+                    .bench_function("read output", |b| b.iter(|| *output.output_buffer()));
+                write_contended.bench_function("update", |b| {
+                    b.iter(|| {
+                        output.update();
+                    })
+                });
+                write_contended.bench_function("receive", |b| b.iter(|| *output.read()));
+            },
+        );
+    }
+}
+
+criterion_group!(benches, benchmark);
+criterion_main!(benches);