chore(release): v0.1.1 (#9 )

chore(release): 0.1.1 Co-authored-by: cuddle-please <bot@cuddle.sh> Reviewed-on: #9
feat: replace channel with semaphore for better performance
2025-11-25 09:03:15 +01:00 · 2025-11-24 23:25:11 +01:00 · 2025-11-13 03:25:48 +01:00
6 changed files with 255 additions and 162 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

 ## [Unreleased]

-## [0.1.1] - 2025-11-13
+## [0.1.1] - 2025-11-24
+
+### Added
+- replace channel with semaphore for better performance

 ### Fixed
 - *(deps)* update all dependencies
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,9 +4,9 @@ version = 4

 [[package]]
 name = "anyhow"
-version = "1.0.71"
+version = "1.0.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c7d0618f0e0b7e8ff11427422b64564d5fb0be1940354bfe2e0529b18a9d9b8"
+checksum = "a23eb6b1614318a8071c9b2521f36b424b2c83db5eb3a0fead4a6c0809af6e61"

 [[package]]
 name = "autocfg"
@@ -44,20 +44,11 @@ version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e575fab7d1e0dcb8d0c7bcf9a63ee213816ab51902e6d244a95819acacf1d4f7"

-[[package]]
-name = "hermit-abi"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee512640fe35acbfb4bb779db6f0d80704c2cacfa2e39b601ef3e3f47d1ae4c7"
-dependencies = [
- "libc",
-]
-
 [[package]]
 name = "libc"
-version = "0.2.146"
+version = "0.2.177"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f92be4933c13fd498862a9e02a3055f8a8d9c039ce33db97306fd5a6caa7f29b"
+checksum = "2874a2af47a2325c2001a6e6fad9b16a53b802102b528163885171cf92b15976"

 [[package]]
 name = "lock_api"
@@ -77,13 +68,13 @@ checksum = "b06a4cde4c0f271a446782e3eff8de789548ce57dbc8eca9292c27f4a42004b4"

 [[package]]
 name = "mio"
-version = "0.8.8"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "927a765cd3fc26206e66b296465fa9d3e5ab003e651c1b3c060e7956d96b19d2"
+checksum = "69d83b0086dc8ecf3ce9ae2874b2d1290252e2a30720bea58a5c6639b0092873"
 dependencies = [
 "libc",
 "wasi",
- "windows-sys",
+ "windows-sys 0.61.2",
 ]

 [[package]]
@@ -96,16 +87,6 @@ dependencies = [
 "tracing",
 ]

-[[package]]
-name = "num_cpus"
-version = "1.15.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fac9e2da13b5eb447a6ce3d392f23a29d8694bff781bf03a16cd9ac8697593b"
-dependencies = [
- "hermit-abi",
- "libc",
-]
-
 [[package]]
 name = "once_cell"
 version = "1.18.0"
@@ -132,7 +113,7 @@ dependencies = [
 "libc",
 "redox_syscall",
 "smallvec",
- "windows-targets",
+ "windows-targets 0.48.0",
 ]

 [[package]]
@@ -191,12 +172,12 @@ checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"

 [[package]]
 name = "socket2"
-version = "0.4.9"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64a4a911eed85daf18834cfaa86a79b7d266ff93ff5ba14005426219480ed662"
+checksum = "17129e116933cf371d018bb80ae557e889637989d8638274fb25622827b03881"
 dependencies = [
 "libc",
- "winapi",
+ "windows-sys 0.60.2",
 ]

 [[package]]
@@ -212,28 +193,26 @@ dependencies = [

 [[package]]
 name = "tokio"
-version = "1.28.2"
+version = "1.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94d7b1cfd2aa4011f2de74c2c4c63665e27a71006b0a192dcd2710272e73dfa2"
+checksum = "ff360e02eab121e0bc37a2d3b4d4dc622e6eda3a8e5253d5435ecf5bd4c68408"
 dependencies = [
- "autocfg",
 "bytes",
 "libc",
 "mio",
- "num_cpus",
 "parking_lot",
 "pin-project-lite",
 "signal-hook-registry",
 "socket2",
 "tokio-macros",
- "windows-sys",
+ "windows-sys 0.61.2",
 ]

 [[package]]
 name = "tokio-macros"
-version = "2.1.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
+checksum = "af407857209536a95c8e56f8231ef2c2e2aff839b22e07a1ffcbc617e9db9fa5"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -242,9 +221,9 @@ dependencies = [

 [[package]]
 name = "tokio-util"
-version = "0.7.15"
+version = "0.7.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "66a539a9ad6d5d281510d5bd368c973d636c02dbf8a67300bfb6b950696ad7df"
+checksum = "2efa149fe76073d6e8fd97ef4f4eca7b67f599660115591483572e406e165594"
 dependencies = [
 "bytes",
 "futures-core",
@@ -298,34 +277,27 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"

 [[package]]
-name = "winapi"
-version = "0.3.9"
+name = "windows-link"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
-dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
-]
-
-[[package]]
-name = "winapi-i686-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
-
-[[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"

 [[package]]
 name = "windows-sys"
-version = "0.48.0"
+version = "0.60.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+checksum = "f2f500e4d28234f72040990ec9d39e3a6b950f9f22d3dba18416c35882612bcb"
 dependencies = [
- "windows-targets",
+ "windows-targets 0.53.5",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.61.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
+dependencies = [
+ "windows-link",
 ]

 [[package]]
@@ -334,13 +306,30 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7b1eb6f0cd7c80c79759c929114ef071b87354ce476d9d94271031c0497adfd5"
 dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
+ "windows_aarch64_gnullvm 0.48.0",
+ "windows_aarch64_msvc 0.48.0",
+ "windows_i686_gnu 0.48.0",
+ "windows_i686_msvc 0.48.0",
+ "windows_x86_64_gnu 0.48.0",
+ "windows_x86_64_gnullvm 0.48.0",
+ "windows_x86_64_msvc 0.48.0",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.53.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4945f9f551b88e0d65f3db0bc25c33b8acea4d9e41163edf90dcd0b19f9069f3"
+dependencies = [
+ "windows-link",
+ "windows_aarch64_gnullvm 0.53.1",
+ "windows_aarch64_msvc 0.53.1",
+ "windows_i686_gnu 0.53.1",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc 0.53.1",
+ "windows_x86_64_gnu 0.53.1",
+ "windows_x86_64_gnullvm 0.53.1",
+ "windows_x86_64_msvc 0.53.1",
 ]

 [[package]]
@@ -349,38 +338,86 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91ae572e1b79dba883e0d315474df7305d12f569b400fcf90581b06062f7e1bc"

+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9d8416fa8b42f5c947f8482c43e7d89e73a173cead56d044f6a56104a6d1b53"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b2ef27e0d7bdfcfc7b868b317c1d32c641a6fe4629c171b8928c7b08d98d7cf3"

+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9d782e804c2f632e395708e99a94275910eb9100b2114651e04744e9b125006"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"

+[[package]]
+name = "windows_i686_gnu"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "960e6da069d81e09becb0ca57a65220ddff016ff2d6af6a223cf372a506593a3"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa7359d10048f68ab8b09fa71c3daccfb0e9b559aed648a8f95469c27057180c"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"

+[[package]]
+name = "windows_i686_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e7ac75179f18232fe9c285163565a57ef8d3c89254a30685b57d83a38d326c2"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"

+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c3842cdd74a865a8066ab39c8a7a473c0778a3f29370b5fd6b4b9aa7df4a499"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"

+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ffa179e2d07eee8ad8f57493436566c7cc30ac536a3379fdf008f47f6bb7ae1"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
--- a/crates/noworkers/examples/parallel_processing.rs
+++ b/crates/noworkers/examples/parallel_processing.rs
@@ -62,7 +62,7 @@ async fn example_parallel_map(dataset: Vec<i32>) -> anyhow::Result<()> {

                // Update progress
                let count = processed.fetch_add(1, Ordering::SeqCst) + 1;
-                if count % 10 == 0 {
+                if count.is_multiple_of(10) {
                    println!("  Processed {}/{} items", count, total);
                }

@@ -127,9 +127,7 @@ async fn example_pipeline(dataset: Vec<i32>) -> anyhow::Result<()> {
        stage2
            .add(move |_| async move {
                // Filter even numbers and sum
-                let filtered_sum: i32 = chunk.iter()
-                    .filter(|&&x| x % 2 == 0)
-                    .sum();
+                let filtered_sum: i32 = chunk.iter().filter(|&&x| x % 2 == 0).sum();

                tokio::time::sleep(Duration::from_millis(20)).await;

@@ -161,7 +159,11 @@ async fn example_batch_processing(dataset: Vec<i32>) -> anyhow::Result<()> {
        .map(|chunk| chunk.to_vec())
        .collect();

-    println!("  Processing {} batches of {} items each", batches.len(), batch_size);
+    println!(
+        "  Processing {} batches of {} items each",
+        batches.len(),
+        batch_size
+    );

    let mut workers = Workers::new();
    workers.with_limit(3); // Process 3 batches concurrently
@@ -206,7 +208,11 @@ async fn example_batch_processing(dataset: Vec<i32>) -> anyhow::Result<()> {
    let results = results.lock().await;
    let total_processed: usize = results.iter().sum();

-    println!("  Processed {} items in {}ms\n", total_processed, start.elapsed().as_millis());
+    println!(
+        "  Processed {} items in {}ms\n",
+        total_processed,
+        start.elapsed().as_millis()
+    );

    Ok(())
 }
--- a/crates/noworkers/examples/wait_lock.rs
+++ b/crates/noworkers/examples/wait_lock.rs
@@ -0,0 +1,62 @@
+#![feature(random)]
+use std::{random, sync::atomic::AtomicUsize};
+
+use tokio_util::sync::CancellationToken;
+
+static SLOW_IN_PROGRESS: AtomicUsize = AtomicUsize::new(0);
+static FAST_IN_PROGRESS: AtomicUsize = AtomicUsize::new(0);
+
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    tokio::spawn(async move {
+        loop {
+            println!(
+                "slow: {}, fast: {}",
+                SLOW_IN_PROGRESS.load(std::sync::atomic::Ordering::Relaxed),
+                FAST_IN_PROGRESS.load(std::sync::atomic::Ordering::Relaxed)
+            );
+            tokio::time::sleep(std::time::Duration::from_millis(500)).await;
+        }
+    });
+    let mut workers = noworkers::Workers::new();
+
+    workers.with_limit(30);
+
+    for _ in 0..1000 {
+        let range: u16 = random::random(..);
+        if range < (u16::MAX / 4) {
+            workers.add(slow).await?;
+            continue;
+        }
+
+        workers.add(fast).await?;
+    }
+
+    workers.wait().await?;
+
+    Ok(())
+}
+
+async fn fast(_cancel: CancellationToken) -> anyhow::Result<()> {
+    FAST_IN_PROGRESS.fetch_add(1, std::sync::atomic::Ordering::SeqCst);
+    // println!("{}: running fast", now());
+    tokio::time::sleep(std::time::Duration::from_millis(200)).await;
+
+    FAST_IN_PROGRESS.fetch_sub(1, std::sync::atomic::Ordering::SeqCst);
+    Ok(())
+}
+async fn slow(_cancel: CancellationToken) -> anyhow::Result<()> {
+    SLOW_IN_PROGRESS.fetch_add(1, std::sync::atomic::Ordering::SeqCst);
+    // println!("{}: running slow", now());
+    tokio::time::sleep(std::time::Duration::from_secs(3)).await;
+    // println!("{}: completed slow", now());
+    SLOW_IN_PROGRESS.fetch_sub(1, std::sync::atomic::Ordering::SeqCst);
+    Ok(())
+}
+
+fn now() -> u128 {
+    std::time::SystemTime::now()
+        .duration_since(std::time::UNIX_EPOCH)
+        .unwrap()
+        .as_millis()
+}
--- a/crates/noworkers/src/lib.rs
+++ b/crates/noworkers/src/lib.rs
@@ -191,7 +191,10 @@

 use std::{future::Future, sync::Arc};

-use tokio::{sync::Mutex, task::JoinHandle};
+use tokio::{
+    sync::{Mutex, OwnedSemaphorePermit, Semaphore},
+    task::JoinHandle,
+};
 use tokio_util::sync::CancellationToken;

 /// Extension traits for common patterns.
@@ -322,8 +325,7 @@ enum WorkerLimit {
    #[default]
    NoLimit,
    Amount {
-        queue: tokio::sync::mpsc::Sender<()>,
-        done: Arc<Mutex<tokio::sync::mpsc::Receiver<()>>>,
+        done: Arc<tokio::sync::Semaphore>,
    },
 }

@@ -331,18 +333,21 @@ impl WorkerLimit {
    pub async fn queue_worker(&self) -> WorkerGuard {
        match self {
            WorkerLimit::NoLimit => {}
-            WorkerLimit::Amount { queue, .. } => {
+            WorkerLimit::Amount { done } => {
                // Queue work, if the channel is limited, we will block until there is enough room
-                queue
-                    .send(())
+                let permit = done
+                    .clone()
+                    .acquire_owned()
                    .await
-                    .expect("tried to queue work on a closed worker channel");
+                    .expect("to be able to acquire permit");
+
+                return WorkerGuard {
+                    _permit: Some(permit),
+                };
            }
        }

-        WorkerGuard {
-            limit: self.clone(),
-        }
+        WorkerGuard { _permit: None }
    }
 }

@@ -353,24 +358,7 @@ impl WorkerLimit {
 ///
 /// This type is not directly constructible by users.
 pub struct WorkerGuard {
-    limit: WorkerLimit,
-}
-
-impl Drop for WorkerGuard {
-    fn drop(&mut self) {
-        match &self.limit {
-            WorkerLimit::NoLimit => { /* no limit on dequeue */ }
-            WorkerLimit::Amount { done, .. } => {
-                let done = done.clone();
-                tokio::spawn(async move {
-                    let mut done = done.lock().await;
-
-                    // dequeue an item, leave room for the next
-                    done.recv().await
-                });
-            }
-        }
-    }
+    _permit: Option<OwnedSemaphorePermit>,
 }

 impl Workers {
@@ -542,11 +530,8 @@ impl Workers {
    /// # }
    /// ```
    pub fn with_limit(&mut self, limit: usize) -> &mut Self {
-        let (tx, rx) = tokio::sync::mpsc::channel(limit);
-
        self.limit = WorkerLimit::Amount {
-            queue: tx,
-            done: Arc::new(Mutex::new(rx)),
+            done: Arc::new(Semaphore::new(limit)),
        };
        self
    }
Author	SHA1	Message	Date
Kasper Juul Hermansen	5b6df5d596	chore(release): v0.1.1 (#9 ) All checks were successful continuous-integration/drone/push Build is passing Details continuous-integration/drone/tag Build is passing Details chore(release): 0.1.1 Co-authored-by: cuddle-please <bot@cuddle.sh> Reviewed-on: #9	2025-11-25 09:03:15 +01:00
kjuulh	38946f77c6	feat: replace channel with semaphore for better performance All checks were successful continuous-integration/drone/push Build is passing Details	2025-11-24 23:25:11 +01:00
Kasper Juul Hermansen	2b35c06d88	fix(deps): update all dependencies All checks were successful continuous-integration/drone/push Build is passing Details	2025-11-13 03:25:48 +01:00