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Created a simple echo TCP server that on two different runtimes that is
called from a GitHub action using Valgrind to ensure that there are
no memory leaks.
Fixes: #3022
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This allows the `benches` crate to depend on `tokio` with all feature
flags. This is a similar strategy used for `examples`.
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This directory was deleted when `cargo hack` was introduced, however
there were some tests that were still useful (macro failure output).
Also, additional build tests will be added over time.
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The compat crate is moved to https://github.com/tokio-rs/tokio-compat.
This allows pinning it to specific revisions of the Tokio git
repository. The master branch is intended to go through significant
churn and it will be easier to update the compat layer in batches.
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## Motivation
The `futures` crate's [`compat` module][futures-compat] provides
interoperability between `futures` 0.1 and `std::future` _future types_
(e.g. implementing `std::future::Future` for a type that implements the
`futures` 0.1 `Future` trait). However, this on its own is insufficient
to run code written against `tokio` 0.1 on a `tokio` 0.2 runtime, if
that code also relies on `tokio`'s runtime services. If legacy tasks are
executed that rely on `tokio::timer`, perform IO using `tokio`'s
reactor, or call `tokio::spawn`, those API calls will fail unless there
is also a runtime compatibility layer.
## Solution
As proposed in #1549, this branch introduces a new `tokio-compat` crate,
with implementations of the thread pool and current-thread runtimes that
are capable of running both tokio 0.1 and tokio 0.2 tasks. The compat
runtime creates a background thread that runs a `tokio` 0.1 timer and
reactor, and sets itself as the `tokio` 0.1 executor as well as the
default 0.2 executor. This allows 0.1 futures that use 0.1 timer,
reactor, and executor APIs may run alongside `std::future` tasks on the
0.2 runtime.
### Examples
Spawning both `tokio` 0.1 and `tokio` 0.2 futures:
```rust
use futures_01::future::lazy;
tokio_compat::run(lazy(|| {
// spawn a `futures` 0.1 future using the `spawn` function from the
// `tokio` 0.1 crate:
tokio_01::spawn(lazy(|| {
println!("hello from tokio 0.1!");
Ok(())
}));
// spawn an `async` block future on the same runtime using `tokio`
// 0.2's `spawn`:
tokio_02::spawn(async {
println!("hello from tokio 0.2!");
});
Ok(())
}))
```
Futures on the compat runtime can use `timer` APIs from both 0.1 and 0.2
versions of `tokio`:
```rust
use std::time::{Duration, Instant};
use futures_01::future::lazy;
use tokio_compat::prelude::*;
tokio_compat::run_03(async {
// Wait for a `tokio` 0.1 `Delay`...
let when = Instant::now() + Duration::from_millis(10);
tokio_01::timer::Delay::new(when)
// convert the delay future into a `std::future` that we can `await`.
.compat()
.await
.expect("tokio 0.1 timer should work!");
println!("10 ms have elapsed");
// Wait for a `tokio` 0.2 `Delay`...
let when = Instant::now() + Duration::from_millis(20);
tokio_02::timer::delay(when).await;
println!("20 ms have elapsed");
});
```
## Future Work
This is just an initial implementation of a `tokio-compat` crate; there
are more compatibility layers we'll want to provide before that crate is
complete. For example, we should also provide compatibility between
`tokio` 0.2's `AsyncRead` and `AsyncWrite` traits and the `futures` 0.1
and `futures` 0.3 versions of those traits. In #1549, @carllerche also
suggests that the `compat` crate provide reimplementations of APIs that
were removed from `tokio` 0.2 proper, such as the `tcp::Incoming`
future.
Additionally, there is likely extra work required to get the
`tokio-threadpool` 0.1 `blocking` APIs to work on the compat runtime.
This will be addressed in a follow-up PR.
Fixes: #1605
Fixes: #1552
Refs: #1549
[futures-compat]: https://rust-lang-nursery.github.io/futures-api-docs/0.3.0-alpha.19/futures/compat/index.html
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It is hard to maintain features list manually, so use cargo-hack's
`--each-feature` flag. And cargo-hack provides a workaround for an issue
that dev-dependencies leaking into normal build (`--no-dev-deps` flag),
so removed own ci tool.
Also, compared to running tests on all features, there is not much
advantage in running tests on each feature, so only the default features
and all features are tested.
If the behavior changes depending on the feature, we need to test it as
another job in CI.
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A step towards collapsing Tokio sub crates into a single `tokio`
crate (#1318).
The sync implementation is now provided by the main `tokio` crate.
Functionality can be opted out of by using the various net related
feature flags.
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A step towards collapsing Tokio sub crates into a single `tokio`
crate (#1318).
The executor implementation is now provided by the main `tokio` crate.
Functionality can be opted out of by using the various net related
feature flags.
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A step towards collapsing Tokio sub crates into a single `tokio`
crate (#1318).
The `io` implementation is now provided by the main `tokio` crate.
Functionality can be opted out of by using the various net related
feature flags.
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A step towards collapsing Tokio sub crates into a single `tokio`
crate (#1318).
The `net` implementation is now provided by the main `tokio` crate.
Functionality can be opted out of by using the various net related
feature flags.
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Related to #1318, Tokio APIs that are "less stable" are moved into a new
`tokio-util` crate. This crate will mirror `tokio` and provide
additional APIs that may require a greater rate of breaking changes.
As examples require `tokio-util`, they are moved into a separate
crate (`examples`). This has the added advantage of being able to avoid
example only dependencies in the `tokio` crate.
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A step towards collapsing Tokio sub crates into a single `tokio`
crate (#1318).
The `timer` implementation is now provided by the main `tokio` crate.
The `timer` functionality may still be excluded from the build by
skipping the `timer` feature flag.
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A step towards collapsing Tokio sub crates into a single `tokio`
crate (#1318).
The `fs` implementation is now provided by the main `tokio` crate. The
`fs` functionality may still be excluded from the build by skipping the
`fs` feature flag.
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The crate has not been updated and it does not seem like it is a good
path forward.
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The threadpool is behind a feature flag.
Refs: #1264
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* reactor: rename tokio-reactor -> tokio-net
This is in preparation for #1264
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The `CurrentThread` executor is exposed using a feature flag.
Refs: #1264
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This switches from using the tokio-futures facade to referencing
futures-* crates directly.
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Migrate to std::futures and the futures 0.3 preview and use async/await
where possible
**Breaking change:** the IoFuture and IoStream definitions used to refer
to Box<dyn Future> and Box<dyn Stream>, but now they are defined as
Pin<...> versions which are technically breaking.
No other breaking or functional changes have been made
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## Motivation
The `tokio-trace` and `tokio-trace-core` crates have been renamed to
`tracing` and `tracing-core`, and moved to their own repository
(`tokio-rs/tracing`).
## Solution
This branch removes `tokio-trace` and `tokio-trace-core` from the
`tokio` repository. In addition, I've added a "Related Projects" section
to the root README, which lists `tracing` (as well as `mio`, and
`bytes`) as other libraries maintained by the Tokio project. I thought
that this would help folks looking for `tokio-trace` here find it in its
new home.
In addition, it changes `tokio` to depend on `tracing-core` rather than
`tokio-trace-core`.
Closes #1159
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
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An initial pass at updating `tokio-threadpool` to `std::future`. The
codebase and tests both now run using `std::future` but the wake
mechanism is not ideal. Follow up work will be required to improve on
this.
Refs: #1200
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Strategy was to
- copy the old codec code that was temporarily being stashed in `tokio-io`
- modify all the type signatures to use Pin, as literal a translation as possible
- fix up the tests likewise
This is intended just to get things compiling and passing tests. Beyond that there is surely
lots of refactoring that can be done to make things more idiomatic. The docs are unchanged.
Closes #1189
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Includes minor fixes and a very basic example.
Fixes #1183
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A first pass at updating Tokio to use `std::future`.
Implementations of `Future` from the futures crate are updated to implement
`Future` from std. Implementations of `Stream` are moved to a feature flag.
This commits disables a number of crates that have not yet been updated.
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A general refresh of Tokio's experimental async / await support.
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Adds a `TypedExecutor` trait that describes how to spawn futures of a specific
type. This is useful for implementing functions that are generic over an executor
and wish to support both `Send` and `!Send` cases.
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- Move `tokio` into its own directory.
- Remove `path` dependencies.
- Run tests with once with crates.io dep and once with patched dep.
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Also bumps:
- tokio-sync (v0.1.4)
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Signed-off-by: Eliza Weisman <eliza@buoyant.io>
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#943
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Also bumps:
* tokio-current-thread (0.1.5)
* tokio-fs (0.1.6)
* tokio-io (0.1.12)
* tokio-reactor (0.1.9)
* tokio-threadpool (0.1.12)
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* Add set -e to .travis.yml
* Fix fmt
* Fix codec feature
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<!-- Thank you for your Pull Request. Please provide a description above
and review the requirements below.
Bug fixes and new features should include tests.
Contributors guide:
https://github.com/tokio-rs/tokio/blob/master/CONTRIBUTING.md -->
## Motivation
In asynchronous systems like Tokio, interpreting traditional log
messages can often be quite challenging. Since individual tasks are
multiplexed on the same thread, associated events and log lines are
intermixed making it difficult to trace the logic flow. Currently, none
of the available logging frameworks or libraries in Rust offer the
ability to trace logical paths through a futures-based program.
There also are complementary goals that can be accomplished with such a
system. For example, metrics / instrumentation can be tracked by
observing emitted events, or trace data can be exported to a distributed
tracing or event processing system.
In addition, it can often be useful to generate this diagnostic data in
a structured manner that can be consumed programmatically. While prior
art for structured logging in Rust exists, it is not currently
standardized, and is not "Tokio-friendly".
## Solution
This branch adds a new library to the tokio project, `tokio-trace`.
`tokio-trace` expands upon logging-style diagnostics by allowing
libraries and applications to record structured events with additional
information about *temporality* and *causality* --- unlike a log
message, a span in `tokio-trace` has a beginning and end time, may be
entered and exited by the flow of execution, and may exist within a
nested tree of similar spans. In addition, `tokio-trace` spans are
*structured*, with the ability to record typed data as well as textual
messages.
The `tokio-trace-core` crate contains the core primitives for this
system, which are expected to remain stable, while `tokio-trace` crate
provides a more "batteries-included" API. In particular, it provides
macros which are a superset of the `log` crate's `error!`, `warn!`,
`info!`, `debug!`, and `trace!` macros, allowing users to begin the
process of adopting `tokio-trace` by performing a drop-in replacement.
## Notes
Work on this project had previously been carried out in the
[tokio-trace-prototype] repository. In addition to the `tokio-trace` and
`tokio-trace-core` crates, the `tokio-trace-prototype` repo also
contains prototypes or sketches of adapter, compatibility, and utility
crates which provide useful functionality for `tokio-trace`, but these
crates are not yet ready for a release. When this branch is merged, that
repository will be archived, and the remaining unstable crates will be
moved to a new `tokio-trace-nursery` repository. Remaining issues on the
`tokio-trace-prototype` repo will be moved to the appropriate new repo.
The crates added in this branch are not _identical_ to the current head
of the `tokio-trace-prototype` repo, as I did some final clean-up and docs
polish in this branch prior to merging this PR.
[tokio-trace-prototype]: https://github.com/hawkw/tokio-trace-prototype
Closes: #561
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
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Also bumps:
- tokio-sync (0.1.0)
- tokio-threadpool (0.1.11)
- tokio-timer (0.2.9)
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