add benchy

Author: ultrabear

src/main.rs

@@ -39,8 +39,6 @@ fn generate_buffer(
  dim: WindowDimensions,
  offset: Complex,
 ) {
- let max_pixel = dim.width * dim.height - 1;
-
  let buf = UncheckedSyncArray::from_slice(buffer);
  let out_buf = &buf;
 
@@ -49,7 +47,7 @@ fn generate_buffer(
  s.spawn(move |_| {
  let mut pixel = thread_id;
 
- while pixel <= max_pixel {
+ while pixel < out_buf.len() {
  let mut z = Complex::default();
  let c = index_to_complex(pixel, scale, dim, offset);
 
@@ -122,6 +120,8 @@ fn main() -> Result<(), Box<dyn Error>> {
  let mut frame = 0;
  let mut scale = conf.starting_scale;
 
+ let start = std::time::Instant::now();
+
  while window.is_open() && !window.is_key_down(Key::Escape) {
  generate_buffer(conf.threads, scale, &mut buffer, conf.dims, conf.offset);
  insert_frame_counter(frame, &mut buffer, conf.dims);
@@ -130,6 +130,10 @@ fn main() -> Result<(), Box<dyn Error>> {
  frame += 1;
 
  window.update_with_buffer(&buffer, conf.dims.width, conf.dims.height)?;
+
+ if frame % 100 == 0 {
+ println!("{frame} frames in {:?}", start.elapsed());
+ }
  }
 
  Ok(())

src/unchecked_array.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 pub struct UncheckedSyncArray<'a, T>(*mut T, usize, core::marker::PhantomData<&'a mut T>);
 
 unsafe impl<'a, T: Send + Sync> Sync for UncheckedSyncArray<'a, T> {}
@@ -7,6 +9,14 @@ impl<'a, T> UncheckedSyncArray<'a, T> {
  UncheckedSyncArray(v.as_mut_ptr(), v.len(), core::marker::PhantomData)
  }
 
+ pub fn len(&self) -> usize {
+ self.1
+ }
+
+ pub fn is_empty(&self) -> bool {
+ self.len() == 0
+ }
+
  /// # Safety:
  /// As this has no mechanism to ensure more than 1 thread accesses the same index at a time,
  /// if more than 1 thread accesses the same index at a time UB will occur.