parallel-iterator
=================
Parallelize any iterator!
Features
--------
- Support for !Send and !Sync for producer iterators and transform closures.
This allows mutable, safe and easy thread local data, using the captured
closure environments.
- Propagates child thread panics.
- Internal thread handling, don't worry about it! (TODO: make this
configurable)
A minimal example
-----------------
This code is copy-pasted from `examples/example_1.rs`.
```rust
extern crate parallel_iterator;
use parallel_iterator::ParallelIterator;
fn do_some_work(i: u32) -> u32 {
i + 1 // let's pretend this is a heavy calculation
}
fn main() {
for i in ParallelIterator::new(|| (0u32..100), || do_some_work) {
println!("Got a result: {}!", i);
}
}
```
A _slightly_ more realistic example
-----------------------------------
This code is copy-pasted from `examples/example_2.rs`.
```rust
extern crate parallel_iterator;
use parallel_iterator::ParallelIterator;
fn do_some_work(i: usize, out: &mut Vec<usize>) {
for j in 0..i {
out.push(j); // The caller can pre-allocate.
}
}
fn main() {
const MAX: usize = 1000;
let xform_ctor = || {
let mut buffer = Vec::with_capacity(MAX);
move |i| {
buffer.clear(); // Clear but keep the internal allocation.
do_some_work(i, &mut buffer);
buffer.last().map(|u| *u) // This is just an example value.
}
};
for i in ParallelIterator::new(|| (0..MAX), xform_ctor) {
match i {
Some(i) => println!("Got Some({})!", i),
None => println!("Got None!"),
}
}
}
```
Please see the documentation on the ParallelIterator struct for more details.
Changelog
---------
### 0.1.4
- Added examples.
- Improved documentation.
- Updated dependencies.
### 0.1.3
- Switched to crossbeam-channel instead of chan.
- Updated dependencies.
### 0.1.2
- Updated dependencies.
### 0.1.1
- Removed dead code in the minimal example.
### 0.1.0
- Initial publish.
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.