Initial commit
This commit is contained in:
commit
0db060cfd0
|
@ -0,0 +1 @@
|
||||||
|
github: stjepang
|
|
@ -0,0 +1,51 @@
|
||||||
|
name: Build and test
|
||||||
|
|
||||||
|
on:
|
||||||
|
push:
|
||||||
|
branches:
|
||||||
|
- master
|
||||||
|
pull_request:
|
||||||
|
|
||||||
|
jobs:
|
||||||
|
build_and_test:
|
||||||
|
runs-on: ${{ matrix.os }}
|
||||||
|
strategy:
|
||||||
|
fail-fast: false
|
||||||
|
matrix:
|
||||||
|
os: [ubuntu-latest]
|
||||||
|
rust: [nightly, beta, stable]
|
||||||
|
steps:
|
||||||
|
- uses: actions/checkout@v2
|
||||||
|
|
||||||
|
- name: Set current week of the year in environnement
|
||||||
|
if: startsWith(matrix.os, 'ubuntu') || startsWith(matrix.os, 'macOS')
|
||||||
|
run: echo "::set-env name=CURRENT_WEEK::$(date +%V)"
|
||||||
|
|
||||||
|
- name: Set current week of the year in environnement
|
||||||
|
if: startsWith(matrix.os, 'windows')
|
||||||
|
run: echo "::set-env name=CURRENT_WEEK::$(Get-Date -UFormat %V)"
|
||||||
|
|
||||||
|
- name: Install latest ${{ matrix.rust }}
|
||||||
|
uses: actions-rs/toolchain@v1
|
||||||
|
with:
|
||||||
|
toolchain: ${{ matrix.rust }}
|
||||||
|
profile: minimal
|
||||||
|
override: true
|
||||||
|
|
||||||
|
- name: Run cargo check
|
||||||
|
uses: actions-rs/cargo@v1
|
||||||
|
with:
|
||||||
|
command: check
|
||||||
|
args: --all --bins --examples --tests --all-features
|
||||||
|
|
||||||
|
- name: Run cargo check (without dev-dependencies to catch missing feature flags)
|
||||||
|
if: startsWith(matrix.rust, 'nightly')
|
||||||
|
uses: actions-rs/cargo@v1
|
||||||
|
with:
|
||||||
|
command: check
|
||||||
|
args: -Z features=dev_dep
|
||||||
|
|
||||||
|
- name: Run cargo test
|
||||||
|
uses: actions-rs/cargo@v1
|
||||||
|
with:
|
||||||
|
command: test
|
|
@ -0,0 +1,26 @@
|
||||||
|
name: Lint
|
||||||
|
|
||||||
|
on:
|
||||||
|
push:
|
||||||
|
branches:
|
||||||
|
- master
|
||||||
|
pull_request:
|
||||||
|
|
||||||
|
jobs:
|
||||||
|
clippy:
|
||||||
|
runs-on: ubuntu-latest
|
||||||
|
steps:
|
||||||
|
- uses: actions/checkout@v2
|
||||||
|
|
||||||
|
- name: Set current week of the year in environnement
|
||||||
|
run: echo "::set-env name=CURRENT_WEEK::$(date +%V)"
|
||||||
|
|
||||||
|
- uses: actions-rs/toolchain@v1
|
||||||
|
with:
|
||||||
|
toolchain: stable
|
||||||
|
profile: minimal
|
||||||
|
components: clippy
|
||||||
|
- uses: actions-rs/clippy-check@v1
|
||||||
|
with:
|
||||||
|
token: ${{ secrets.GITHUB_TOKEN }}
|
||||||
|
args: --all-features -- -W clippy::all
|
|
@ -0,0 +1,20 @@
|
||||||
|
name: Security audit
|
||||||
|
|
||||||
|
on:
|
||||||
|
push:
|
||||||
|
branches:
|
||||||
|
- master
|
||||||
|
pull_request:
|
||||||
|
|
||||||
|
jobs:
|
||||||
|
security_audit:
|
||||||
|
runs-on: ubuntu-latest
|
||||||
|
steps:
|
||||||
|
- uses: actions/checkout@v2
|
||||||
|
|
||||||
|
- name: Set current week of the year in environnement
|
||||||
|
run: echo "::set-env name=CURRENT_WEEK::$(date +%V)"
|
||||||
|
|
||||||
|
- uses: actions-rs/audit-check@v1
|
||||||
|
with:
|
||||||
|
token: ${{ secrets.GITHUB_TOKEN }}
|
|
@ -0,0 +1,2 @@
|
||||||
|
/target
|
||||||
|
Cargo.lock
|
|
@ -0,0 +1,3 @@
|
||||||
|
# Version 1.0.0
|
||||||
|
|
||||||
|
- Initial version
|
|
@ -0,0 +1,13 @@
|
||||||
|
[package]
|
||||||
|
name = "easy-parallel"
|
||||||
|
version = "1.0.0"
|
||||||
|
authors = ["Stjepan Glavina <stjepang@gmail.com>"]
|
||||||
|
edition = "2018"
|
||||||
|
description = "Easy parallel closures"
|
||||||
|
license = "Apache-2.0 OR MIT"
|
||||||
|
repository = "https://github.com/stjepang/easy-parallel"
|
||||||
|
homepage = "https://github.com/stjepang/easy-parallel"
|
||||||
|
documentation = "https://docs.rs/easy-parallel"
|
||||||
|
keywords = ["scope", "thread", "scoped", "spawn"]
|
||||||
|
categories = ["concurrency"]
|
||||||
|
readme = "README.md"
|
|
@ -0,0 +1,201 @@
|
||||||
|
Apache License
|
||||||
|
Version 2.0, January 2004
|
||||||
|
http://www.apache.org/licenses/
|
||||||
|
|
||||||
|
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||||
|
|
||||||
|
1. Definitions.
|
||||||
|
|
||||||
|
"License" shall mean the terms and conditions for use, reproduction,
|
||||||
|
and distribution as defined by Sections 1 through 9 of this document.
|
||||||
|
|
||||||
|
"Licensor" shall mean the copyright owner or entity authorized by
|
||||||
|
the copyright owner that is granting the License.
|
||||||
|
|
||||||
|
"Legal Entity" shall mean the union of the acting entity and all
|
||||||
|
other entities that control, are controlled by, or are under common
|
||||||
|
control with that entity. For the purposes of this definition,
|
||||||
|
"control" means (i) the power, direct or indirect, to cause the
|
||||||
|
direction or management of such entity, whether by contract or
|
||||||
|
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||||
|
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||||
|
|
||||||
|
"You" (or "Your") shall mean an individual or Legal Entity
|
||||||
|
exercising permissions granted by this License.
|
||||||
|
|
||||||
|
"Source" form shall mean the preferred form for making modifications,
|
||||||
|
including but not limited to software source code, documentation
|
||||||
|
source, and configuration files.
|
||||||
|
|
||||||
|
"Object" form shall mean any form resulting from mechanical
|
||||||
|
transformation or translation of a Source form, including but
|
||||||
|
not limited to compiled object code, generated documentation,
|
||||||
|
and conversions to other media types.
|
||||||
|
|
||||||
|
"Work" shall mean the work of authorship, whether in Source or
|
||||||
|
Object form, made available under the License, as indicated by a
|
||||||
|
copyright notice that is included in or attached to the work
|
||||||
|
(an example is provided in the Appendix below).
|
||||||
|
|
||||||
|
"Derivative Works" shall mean any work, whether in Source or Object
|
||||||
|
form, that is based on (or derived from) the Work and for which the
|
||||||
|
editorial revisions, annotations, elaborations, or other modifications
|
||||||
|
represent, as a whole, an original work of authorship. For the purposes
|
||||||
|
of this License, Derivative Works shall not include works that remain
|
||||||
|
separable from, or merely link (or bind by name) to the interfaces of,
|
||||||
|
the Work and Derivative Works thereof.
|
||||||
|
|
||||||
|
"Contribution" shall mean any work of authorship, including
|
||||||
|
the original version of the Work and any modifications or additions
|
||||||
|
to that Work or Derivative Works thereof, that is intentionally
|
||||||
|
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||||
|
or by an individual or Legal Entity authorized to submit on behalf of
|
||||||
|
the copyright owner. For the purposes of this definition, "submitted"
|
||||||
|
means any form of electronic, verbal, or written communication sent
|
||||||
|
to the Licensor or its representatives, including but not limited to
|
||||||
|
communication on electronic mailing lists, source code control systems,
|
||||||
|
and issue tracking systems that are managed by, or on behalf of, the
|
||||||
|
Licensor for the purpose of discussing and improving the Work, but
|
||||||
|
excluding communication that is conspicuously marked or otherwise
|
||||||
|
designated in writing by the copyright owner as "Not a Contribution."
|
||||||
|
|
||||||
|
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||||
|
on behalf of whom a Contribution has been received by Licensor and
|
||||||
|
subsequently incorporated within the Work.
|
||||||
|
|
||||||
|
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||||
|
this License, each Contributor hereby grants to You a perpetual,
|
||||||
|
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||||
|
copyright license to reproduce, prepare Derivative Works of,
|
||||||
|
publicly display, publicly perform, sublicense, and distribute the
|
||||||
|
Work and such Derivative Works in Source or Object form.
|
||||||
|
|
||||||
|
3. Grant of Patent License. Subject to the terms and conditions of
|
||||||
|
this License, each Contributor hereby grants to You a perpetual,
|
||||||
|
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||||
|
(except as stated in this section) patent license to make, have made,
|
||||||
|
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||||
|
where such license applies only to those patent claims licensable
|
||||||
|
by such Contributor that are necessarily infringed by their
|
||||||
|
Contribution(s) alone or by combination of their Contribution(s)
|
||||||
|
with the Work to which such Contribution(s) was submitted. If You
|
||||||
|
institute patent litigation against any entity (including a
|
||||||
|
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||||
|
or a Contribution incorporated within the Work constitutes direct
|
||||||
|
or contributory patent infringement, then any patent licenses
|
||||||
|
granted to You under this License for that Work shall terminate
|
||||||
|
as of the date such litigation is filed.
|
||||||
|
|
||||||
|
4. Redistribution. You may reproduce and distribute copies of the
|
||||||
|
Work or Derivative Works thereof in any medium, with or without
|
||||||
|
modifications, and in Source or Object form, provided that You
|
||||||
|
meet the following conditions:
|
||||||
|
|
||||||
|
(a) You must give any other recipients of the Work or
|
||||||
|
Derivative Works a copy of this License; and
|
||||||
|
|
||||||
|
(b) You must cause any modified files to carry prominent notices
|
||||||
|
stating that You changed the files; and
|
||||||
|
|
||||||
|
(c) You must retain, in the Source form of any Derivative Works
|
||||||
|
that You distribute, all copyright, patent, trademark, and
|
||||||
|
attribution notices from the Source form of the Work,
|
||||||
|
excluding those notices that do not pertain to any part of
|
||||||
|
the Derivative Works; and
|
||||||
|
|
||||||
|
(d) If the Work includes a "NOTICE" text file as part of its
|
||||||
|
distribution, then any Derivative Works that You distribute must
|
||||||
|
include a readable copy of the attribution notices contained
|
||||||
|
within such NOTICE file, excluding those notices that do not
|
||||||
|
pertain to any part of the Derivative Works, in at least one
|
||||||
|
of the following places: within a NOTICE text file distributed
|
||||||
|
as part of the Derivative Works; within the Source form or
|
||||||
|
documentation, if provided along with the Derivative Works; or,
|
||||||
|
within a display generated by the Derivative Works, if and
|
||||||
|
wherever such third-party notices normally appear. The contents
|
||||||
|
of the NOTICE file are for informational purposes only and
|
||||||
|
do not modify the License. You may add Your own attribution
|
||||||
|
notices within Derivative Works that You distribute, alongside
|
||||||
|
or as an addendum to the NOTICE text from the Work, provided
|
||||||
|
that such additional attribution notices cannot be construed
|
||||||
|
as modifying the License.
|
||||||
|
|
||||||
|
You may add Your own copyright statement to Your modifications and
|
||||||
|
may provide additional or different license terms and conditions
|
||||||
|
for use, reproduction, or distribution of Your modifications, or
|
||||||
|
for any such Derivative Works as a whole, provided Your use,
|
||||||
|
reproduction, and distribution of the Work otherwise complies with
|
||||||
|
the conditions stated in this License.
|
||||||
|
|
||||||
|
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||||
|
any Contribution intentionally submitted for inclusion in the Work
|
||||||
|
by You to the Licensor shall be under the terms and conditions of
|
||||||
|
this License, without any additional terms or conditions.
|
||||||
|
Notwithstanding the above, nothing herein shall supersede or modify
|
||||||
|
the terms of any separate license agreement you may have executed
|
||||||
|
with Licensor regarding such Contributions.
|
||||||
|
|
||||||
|
6. Trademarks. This License does not grant permission to use the trade
|
||||||
|
names, trademarks, service marks, or product names of the Licensor,
|
||||||
|
except as required for reasonable and customary use in describing the
|
||||||
|
origin of the Work and reproducing the content of the NOTICE file.
|
||||||
|
|
||||||
|
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||||
|
agreed to in writing, Licensor provides the Work (and each
|
||||||
|
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||||
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||||
|
implied, including, without limitation, any warranties or conditions
|
||||||
|
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||||
|
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||||
|
appropriateness of using or redistributing the Work and assume any
|
||||||
|
risks associated with Your exercise of permissions under this License.
|
||||||
|
|
||||||
|
8. Limitation of Liability. In no event and under no legal theory,
|
||||||
|
whether in tort (including negligence), contract, or otherwise,
|
||||||
|
unless required by applicable law (such as deliberate and grossly
|
||||||
|
negligent acts) or agreed to in writing, shall any Contributor be
|
||||||
|
liable to You for damages, including any direct, indirect, special,
|
||||||
|
incidental, or consequential damages of any character arising as a
|
||||||
|
result of this License or out of the use or inability to use the
|
||||||
|
Work (including but not limited to damages for loss of goodwill,
|
||||||
|
work stoppage, computer failure or malfunction, or any and all
|
||||||
|
other commercial damages or losses), even if such Contributor
|
||||||
|
has been advised of the possibility of such damages.
|
||||||
|
|
||||||
|
9. Accepting Warranty or Additional Liability. While redistributing
|
||||||
|
the Work or Derivative Works thereof, You may choose to offer,
|
||||||
|
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||||
|
or other liability obligations and/or rights consistent with this
|
||||||
|
License. However, in accepting such obligations, You may act only
|
||||||
|
on Your own behalf and on Your sole responsibility, not on behalf
|
||||||
|
of any other Contributor, and only if You agree to indemnify,
|
||||||
|
defend, and hold each Contributor harmless for any liability
|
||||||
|
incurred by, or claims asserted against, such Contributor by reason
|
||||||
|
of your accepting any such warranty or additional liability.
|
||||||
|
|
||||||
|
END OF TERMS AND CONDITIONS
|
||||||
|
|
||||||
|
APPENDIX: How to apply the Apache License to your work.
|
||||||
|
|
||||||
|
To apply the Apache License to your work, attach the following
|
||||||
|
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||||
|
replaced with your own identifying information. (Don't include
|
||||||
|
the brackets!) The text should be enclosed in the appropriate
|
||||||
|
comment syntax for the file format. We also recommend that a
|
||||||
|
file or class name and description of purpose be included on the
|
||||||
|
same "printed page" as the copyright notice for easier
|
||||||
|
identification within third-party archives.
|
||||||
|
|
||||||
|
Copyright [yyyy] [name of copyright owner]
|
||||||
|
|
||||||
|
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.
|
|
@ -0,0 +1,23 @@
|
||||||
|
Permission is hereby granted, free of charge, to any
|
||||||
|
person obtaining a copy of this software and associated
|
||||||
|
documentation files (the "Software"), to deal in the
|
||||||
|
Software without restriction, including without
|
||||||
|
limitation the rights to use, copy, modify, merge,
|
||||||
|
publish, distribute, sublicense, and/or sell copies of
|
||||||
|
the Software, and to permit persons to whom the Software
|
||||||
|
is furnished to do so, subject to the following
|
||||||
|
conditions:
|
||||||
|
|
||||||
|
The above copyright notice and this permission notice
|
||||||
|
shall be included in all copies or substantial portions
|
||||||
|
of the Software.
|
||||||
|
|
||||||
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
|
||||||
|
ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
|
||||||
|
TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
|
||||||
|
PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
|
||||||
|
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||||
|
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
||||||
|
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
|
||||||
|
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
||||||
|
DEALINGS IN THE SOFTWARE.
|
|
@ -0,0 +1,60 @@
|
||||||
|
# easy-parallel
|
||||||
|
|
||||||
|
[![Build](https://github.com/stjepang/easy-parallel/workflows/Build%20and%20test/badge.svg)](
|
||||||
|
https://github.com/stjepang/easy-parallel/actions)
|
||||||
|
[![License](https://img.shields.io/badge/license-MIT%2FApache--2.0-blue.svg)](
|
||||||
|
https://github.com/stjepang/easy-parallel)
|
||||||
|
[![Cargo](https://img.shields.io/crates/v/easy-parallel.svg)](
|
||||||
|
https://crates.io/crates/easy-parallel)
|
||||||
|
[![Documentation](https://docs.rs/easy-parallel/badge.svg)](
|
||||||
|
https://docs.rs/easy-parallel)
|
||||||
|
|
||||||
|
Easy parallel closures.
|
||||||
|
|
||||||
|
This is a simple primitive for spawning threads in bulk and waiting for them to complete.
|
||||||
|
Threads are allowed to borrow local variables from the main thread.
|
||||||
|
|
||||||
|
## Examples
|
||||||
|
|
||||||
|
Run two threads that increment a number:
|
||||||
|
|
||||||
|
```rust
|
||||||
|
use easy_parallel::Parallel;
|
||||||
|
use std::sync::Mutex;
|
||||||
|
|
||||||
|
let mut m = Mutex::new(0);
|
||||||
|
|
||||||
|
Parallel::new()
|
||||||
|
.add(|| *m.lock().unwrap() += 1)
|
||||||
|
.add(|| *m.lock().unwrap() += 1)
|
||||||
|
.run();
|
||||||
|
|
||||||
|
assert_eq!(*m.get_mut().unwrap(), 2);
|
||||||
|
```
|
||||||
|
|
||||||
|
Print each number in a vector on a different thread:
|
||||||
|
|
||||||
|
```rust
|
||||||
|
use easy_parallel::Parallel;
|
||||||
|
|
||||||
|
let mut v = vec![10, 20, 30];
|
||||||
|
|
||||||
|
Parallel::new()
|
||||||
|
.each(0..v.len(), |i| println!("{}", v[i]))
|
||||||
|
.run();
|
||||||
|
```
|
||||||
|
|
||||||
|
## License
|
||||||
|
|
||||||
|
Licensed under either of
|
||||||
|
|
||||||
|
* Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
|
||||||
|
* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
|
||||||
|
|
||||||
|
at your option.
|
||||||
|
|
||||||
|
#### Contribution
|
||||||
|
|
||||||
|
Unless you explicitly state otherwise, any contribution intentionally submitted
|
||||||
|
for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
|
||||||
|
dual licensed as above, without any additional terms or conditions.
|
|
@ -0,0 +1,189 @@
|
||||||
|
//! Easy parallel closures.
|
||||||
|
//!
|
||||||
|
//! This is a simple primitive for spawning threads in bulk and waiting for them to complete.
|
||||||
|
//! Threads are allowed to borrow local variables from the main thread.
|
||||||
|
//!
|
||||||
|
//! # Examples
|
||||||
|
//!
|
||||||
|
//! Run two threads that increment a number:
|
||||||
|
//!
|
||||||
|
//! ```
|
||||||
|
//! use easy_parallel::Parallel;
|
||||||
|
//! use std::sync::Mutex;
|
||||||
|
//!
|
||||||
|
//! let mut m = Mutex::new(0);
|
||||||
|
//!
|
||||||
|
//! Parallel::new()
|
||||||
|
//! .add(|| *m.lock().unwrap() += 1)
|
||||||
|
//! .add(|| *m.lock().unwrap() += 1)
|
||||||
|
//! .run();
|
||||||
|
//!
|
||||||
|
//! assert_eq!(*m.get_mut().unwrap(), 2);
|
||||||
|
//! ```
|
||||||
|
//!
|
||||||
|
//! Print each number in a vector on a different thread:
|
||||||
|
//!
|
||||||
|
//! ```
|
||||||
|
//! use easy_parallel::Parallel;
|
||||||
|
//!
|
||||||
|
//! let mut v = vec![10, 20, 30];
|
||||||
|
//!
|
||||||
|
//! Parallel::new()
|
||||||
|
//! .each(0..v.len(), |i| println!("{}", v[i]))
|
||||||
|
//! .run();
|
||||||
|
//! ```
|
||||||
|
|
||||||
|
#![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)]
|
||||||
|
|
||||||
|
use std::fmt;
|
||||||
|
use std::marker::PhantomData;
|
||||||
|
use std::mem;
|
||||||
|
use std::panic;
|
||||||
|
use std::process;
|
||||||
|
use std::thread;
|
||||||
|
|
||||||
|
/// A builder that runs closures in parallel.
|
||||||
|
#[derive(Default)]
|
||||||
|
#[must_use]
|
||||||
|
pub struct Parallel<'a> {
|
||||||
|
/// Closures to run.
|
||||||
|
closures: Vec<Box<dyn FnOnce() + Send + 'a>>,
|
||||||
|
|
||||||
|
/// Makes the lifetime invariant.
|
||||||
|
_marker: PhantomData<&'a mut &'a ()>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl<'a> Parallel<'a> {
|
||||||
|
/// Creates a builder for running closures in parallel.
|
||||||
|
///
|
||||||
|
/// # Examples
|
||||||
|
///
|
||||||
|
/// ```
|
||||||
|
/// use easy_parallel::Parallel;
|
||||||
|
///
|
||||||
|
/// let p = Parallel::new();
|
||||||
|
/// ```
|
||||||
|
pub fn new() -> Parallel<'a> {
|
||||||
|
Parallel {
|
||||||
|
closures: Vec::new(),
|
||||||
|
_marker: PhantomData,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Adds a closure to the list.
|
||||||
|
///
|
||||||
|
/// # Examples
|
||||||
|
///
|
||||||
|
/// ```
|
||||||
|
/// use easy_parallel::Parallel;
|
||||||
|
///
|
||||||
|
/// Parallel::new()
|
||||||
|
/// .add(|| println!("hello from a thread"))
|
||||||
|
/// .run();
|
||||||
|
/// ```
|
||||||
|
pub fn add<F>(mut self, f: F) -> Parallel<'a>
|
||||||
|
where
|
||||||
|
F: FnOnce() + Send + 'a,
|
||||||
|
{
|
||||||
|
self.closures.push(Box::new(f));
|
||||||
|
self
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Adds a cloned closure for each item in an iterator.
|
||||||
|
///
|
||||||
|
/// Each clone of the closure takes an item as an argument.
|
||||||
|
///
|
||||||
|
/// # Examples
|
||||||
|
///
|
||||||
|
/// ```
|
||||||
|
/// use easy_parallel::Parallel;
|
||||||
|
///
|
||||||
|
/// Parallel::new()
|
||||||
|
/// .each(0..5, |i| println!("thread #{}", i))
|
||||||
|
/// .run();
|
||||||
|
/// ```
|
||||||
|
pub fn each<T, I, F>(mut self, iter: I, f: F) -> Parallel<'a>
|
||||||
|
where
|
||||||
|
I: IntoIterator<Item = T>,
|
||||||
|
F: FnOnce(T) + Clone + Send + 'a,
|
||||||
|
T: Send + 'a,
|
||||||
|
{
|
||||||
|
for t in iter.into_iter() {
|
||||||
|
let f = f.clone();
|
||||||
|
self.closures.push(Box::new(|| f(t)));
|
||||||
|
}
|
||||||
|
self
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Spawns a thread for each closure and waits from them to complete.
|
||||||
|
///
|
||||||
|
/// If a closure panics, panicking will resume in the main thread after all threads are joined.
|
||||||
|
///
|
||||||
|
/// # Examples
|
||||||
|
///
|
||||||
|
/// ```
|
||||||
|
/// use easy_parallel::Parallel;
|
||||||
|
///
|
||||||
|
/// Parallel::new()
|
||||||
|
/// .add(|| println!("thread #1"))
|
||||||
|
/// .add(|| println!("thread #2"))
|
||||||
|
/// .run();
|
||||||
|
/// ```
|
||||||
|
pub fn run(self) {
|
||||||
|
// Set up a guard that aborts on a panic.
|
||||||
|
let guard = NoPanic;
|
||||||
|
|
||||||
|
// Join handles for spawned threads.
|
||||||
|
let mut handles = Vec::new();
|
||||||
|
|
||||||
|
// Spawn a thread for each closure.
|
||||||
|
for f in self.closures {
|
||||||
|
// Convert the `FnOnce()` closure into a `FnMut()` closure.
|
||||||
|
let mut f = Some(f);
|
||||||
|
let f = move || (f.take().unwrap())();
|
||||||
|
|
||||||
|
// Erase the `'a` lifetime.
|
||||||
|
let f: Box<dyn FnMut() + Send + 'a> = Box::new(f);
|
||||||
|
let f: Box<dyn FnMut() + Send + 'static> = unsafe { mem::transmute(f) };
|
||||||
|
|
||||||
|
// Spawn a thread for the closure.
|
||||||
|
handles.push(thread::spawn(f));
|
||||||
|
}
|
||||||
|
|
||||||
|
let mut last_err = None;
|
||||||
|
|
||||||
|
// Join threads and save the last panic if there was one.
|
||||||
|
for h in handles {
|
||||||
|
if let Err(err) = h.join() {
|
||||||
|
last_err = Some(err);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Drop the guard because we may resume a panic now.
|
||||||
|
drop(guard);
|
||||||
|
|
||||||
|
// If a closure panicked, resume the last panic.
|
||||||
|
if let Some(err) = last_err {
|
||||||
|
panic::resume_unwind(err);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl fmt::Debug for Parallel<'_> {
|
||||||
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||||
|
f.debug_struct("Parallel")
|
||||||
|
.field("len", &self.closures.len())
|
||||||
|
.finish()
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Aborts the process if dropped while panicking.
|
||||||
|
struct NoPanic;
|
||||||
|
|
||||||
|
impl Drop for NoPanic {
|
||||||
|
fn drop(&mut self) {
|
||||||
|
if thread::panicking() {
|
||||||
|
process::abort();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
|
@ -0,0 +1,17 @@
|
||||||
|
use std::sync::Mutex;
|
||||||
|
|
||||||
|
use easy_parallel::Parallel;
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn smoke() {
|
||||||
|
let m = Mutex::new(0);
|
||||||
|
let v = vec![2, 3, 5, 7, 11];
|
||||||
|
|
||||||
|
Parallel::new()
|
||||||
|
.add(|| *m.lock().unwrap() += 10)
|
||||||
|
.add(|| *m.lock().unwrap() += 20)
|
||||||
|
.each(v.iter(), |n| *m.lock().unwrap() += *n)
|
||||||
|
.run();
|
||||||
|
|
||||||
|
assert_eq!(m.into_inner().unwrap(), 10 + 20 + v.iter().sum::<i32>());
|
||||||
|
}
|
Loading…
Reference in New Issue