feat: impl time-wheel based timer

Cargo.toml

@@ -13,7 +13,13 @@
 # limitations under the License.
 
 [workspace]
-members = ["fastimer", "fastimer-core", "fastimer-tokio", "xtask"]
+members = [
+  "fastimer",
+  "fastimer-core",
+  "fastimer-timewheel",
+  "fastimer-tokio",
+  "xtask",
+]
 resolver = "2"
 
 [workspace.package]
@@ -30,9 +36,12 @@ fastimer-core = { version = "0.1.0", path = "fastimer-core" }
 fastimer-tokio = { version = "0.10.0", path = "fastimer-tokio" }
 
 # Crates.io dependencies
+atomic-waker = { version = "1.1.2" }
 clap = { version = "4.5.20", features = ["derive"] }
+crossbeam-queue = { version = "0.3.12" }
 log = { version = "0.4.28" }
 logforth = { version = "0.28.1" }
+parking = { version = "2.2.1" }
 pin-project = { version = "1.1.10" }
 tokio = { version = "1.47.1" }
 which = { version = "8.0.0" }

fastimer-core/README.md

@@ -12,7 +12,7 @@
 
 ## Overview
 
-This crate provides core APIs.
+This crate provides core APIs for fastimer.
 
 ## Documentation
 

fastimer-timewheel/Cargo.toml

@@ -0,0 +1,38 @@
+# Copyright 2024 FastLabs Developers
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+[package]
+name = "fastimer-timewheel"
+version = "0.1.0"
+
+description = "Timewheel based implementation for fastimer"
+readme = "README.md"
+
+edition.workspace = true
+homepage.workspace = true
+license.workspace = true
+repository.workspace = true
+rust-version.workspace = true
+
+[dependencies]
+atomic-waker = { workspace = true }
+crossbeam-queue = { workspace = true }
+fastimer-core = { workspace = true }
+parking = { workspace = true }
+
+[dev-dependencies]
+tokio = { workspace = true, features = ["full"] }
+
+[lints]
+workspace = true

fastimer-timewheel/README.md

@@ -0,0 +1,29 @@
+# Fastimer Timewheel Implementation
+
+[![Crates.io][crates-badge]][crates-url]
+[![Documentation][docs-badge]][docs-url]
+[![MSRV 1.85][msrv-badge]](https://www.whatrustisit.com)
+
+[crates-badge]: https://img.shields.io/crates/v/fastimer-timewheel.svg
+[crates-url]: https://crates.io/crates/fastimer-timewheel
+[docs-badge]: https://docs.rs/fastimer-timewheel/badge.svg
+[msrv-badge]: https://img.shields.io/badge/MSRV-1.85-green?logo=rust
+[docs-url]: https://docs.rs/fastimer-timewheel
+
+## Overview
+
+This crate provides timewheel based driver implementation.
+
+## Documentation
+
+Read the online documents at https://docs.rs/fastimer-timewheel.
+
+## Minimum Supported Rust Version (MSRV)
+
+This crate is built against the latest stable release, and its minimum supported rustc version is 1.85.0.
+
+The policy is that the minimum Rust version required to use this crate can be increased in minor version updates. For example, if Fastimer 1.0 requires Rust 1.20.0, then Fastimer 1.0.z for all values of z will also require Rust 1.20.0 or newer. However, Fastimer 1.y for y > 0 may require a newer minimum version of Rust.
+
+## License
+
+This project is licensed under [Apache License, Version 2.0](https://www.apache.org/licenses/LICENSE-2.0).