Move all crates to new crates dir

crates/udp_bench/src/common.rs

@@ -0,0 +1,24 @@
+use indicatif::{ProgressBar, ProgressStyle};
+use rand::Rng;
+use rand_distr::Gamma;
+
+pub const GAMMA_SHAPE: f64 = 0.2;
+pub const GAMMA_SCALE: f64 = 100.0;
+
+pub const NUM_INFO_HASHES: usize = 10_000;
+
+pub fn create_progress_bar(name: &str, iterations: u64) -> ProgressBar {
+    let t = format!("{:<8} {}", name, "{wide_bar} {pos:>2}/{len:>2}");
+    let style = ProgressStyle::default_bar()
+        .template(&t)
+        .expect("setup indicatif template");
+
+    ProgressBar::new(iterations).with_style(style)
+}
+
+pub fn gamma_usize(rng: &mut impl Rng, gamma: Gamma<f64>, max: usize) -> usize {
+    let p: f64 = rng.sample(gamma);
+    let p = (p.min(101.0f64) - 1.0) / 100.0;
+
+    (p * max as f64) as usize
+}