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In an effort to reach API stability, the `tokio` crate is shedding its
_public_ dependencies on crates that are either a) do not provide a
stable (1.0+) release with longevity guarantees or b) match the `tokio`
release cadence. Of course, implementing `std` traits fits the
requirements.
The on exception, for now, is the `Stream` trait found in `futures_core`.
It is expected that this trait will not change much and be moved into `std.
Since Tokio is not yet going reaching 1.0, I feel that it is acceptable to maintain
a dependency on this trait given how foundational it is.
Since the `Stream` implementation is optional, types that are logically
streams provide `async fn next_*` functions to obtain the next value.
Avoiding the `next()` name prevents fn conflicts with `StreamExt::next()`.
Additionally, some misc cleanup is also done:
- `tokio::io::io` -> `tokio::io::util`.
- `delay` -> `delay_until`.
- `Timeout::new` -> `timeout(...)`.
- `signal::ctrl_c()` returns a future instead of a stream.
- `{tcp,unix}::Incoming` is removed (due to lack of `Stream` trait).
- `time::Throttle` is removed (due to lack of `Stream` trait).
- Fix: `mpsc::UnboundedSender::send(&self)` (no more conflict with `Sink` fns).
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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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* chore: Fix examples not working with `cargo run`
## Motivation
PR #991 moved the `tokio` crate to its own subdirectory, but did not
move the `examples` directory into `tokio/examples`. While attempting to
use the examples for testing another change, I noticed that #991 had
broken the ability to use `cargo run`, as the examples were no longer
considered part of a crate that cargo was aware of:
```
tokio on master [$] via 🦀v1.33.0 at ☸️ aks-eliza-dev
➜ cargo run --example chat
error: no example target named `chat`
Did you mean `echo`?
```
## Solution
This branch moves the examples into the `tokio` directory, so cargo is
now once again aware of them:
```
tokio on eliza/fix-examples [$] via 🦀v1.33.0 at ☸️ aks-eliza-dev
➜ cargo run --example chat
Compiling tokio-executor v0.1.7 (/Users/eliza/Code/tokio/tokio-executor)
Compiling tokio-reactor v0.1.9
Compiling tokio-threadpool v0.1.13
Compiling tokio-current-thread v0.1.6
Compiling tokio-timer v0.2.10
Compiling tokio-uds v0.2.5
Compiling tokio-udp v0.1.3
Compiling tokio-tcp v0.1.3
Compiling tokio-fs v0.1.6
Compiling tokio v0.1.18 (/Users/eliza/Code/tokio/tokio)
Finished dev [unoptimized + debuginfo] target(s) in 7.04s
Running `target/debug/examples/chat`
server running on localhost:6142
```
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
Signed-off-by: Eliza Weisman <eliza@buoyant.io>
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Fixes: #658
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* docs: fix spelling and whitespace errors
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Create a new tokio-codec crate with many of the contents of
`tokio_io::codec`.
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Close #241
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This handles cases where clients send large amounts of data while on
localhost.
Closes #192
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The PR that updated the examples skipped some comments. This patch
updates thhe comments.
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The exampes included in the repository have lagged behind the changes
made. Specifically, they do not use the new runtime construct.
This patch updates examples to use the latest features of Tokio.
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Tokio is moving away from using `WouldBlock`, instead favoring
`Async::NotReady`.
This patch updates the TCP and UDP types, deprecating any function that
returns `WouldBlock` and adding a poll_ prefixed equivalent.
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This patch is an intial implementation of the Tokio runtime. The Tokio
runtime provides an out of the box configuration for running I/O heavy
asynchronous applications.
As of now, the Tokio runtime is a combination of a work-stealing thread
pool as well as a background reactor to drive I/O resources.
This patch also includes tokio-executor, a hopefully short lived crate
that is based on the futures 0.2 executor RFC.
* Implement `Park` for `Reactor`
This enables the reactor to be used as the thread parker for executors.
This also adds an `Error` component to `Park`. With this change, a
`Reactor` and a `CurrentThread` can be combined to achieve the
capabilities of tokio-core.
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Fixes #123
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Instead, use `UdpFramed::new` to create a framed wrapper around the UDP
socket.
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`UdpFramed` is updated to use the `Encoder` and
`Decoder` traits from `tokio-io`.
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Doing so requires copying the `current_thread` executor from GitHub into
the repo.
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This patch also updates tests and examples to remove deprecated API
usage.
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Generally speaking, it is unsafe to access to perform asynchronous
operations using `&self`. Taking `&self` allows usage from a `Sync`
context, which has unexpected results.
Taking `&mut self` to perform these operations prevents using these
asynchronous values from across tasks (unless they are wrapped in
`RefCell` or `Mutex`.
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std's `Incoming` iterator yields `TcpStream` instances. This patch
updates the `Incoming` future to match this signature.
This changes the yielded value from `(TcpStream, SocketAddr)` ->
`TcpStream`.
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* Refactor UDP SendDgram & RecvDgram
Get rid of unnamed structs in the favor of private structs with named fields
* Change the signature of UdpCodec::encode
Now it is:
```
fn encode(&mut self, msg: Self::Out, buf: &mut Vec<u8>) -> Result<SocketAddr, Self::Error>;
```
Closes https://github.com/tokio-rs/tokio/issues/79
* Fix compilation error from `mio` crate
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This commit removes the `Handle` argument from the following constructors
* `TcpListener::bind`
* `TcpStream::connect`
* `UdpSocket::bind`
The `Handle` argument remains on the various `*_std` constructors as they're
more low-level, but this otherwise is intended to set forth a precedent of by
default not taking `Handle` arguments and instead relying on the global
`Handle::default` return value when necesary.
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This commit removes the `Reactor::run` method which has previously been used to
execute futures and turn the reactor at the same time. The tests/examples made
heavy usage of this method but they have now all temporarily moved to `wait()`
until the futures dependency is upgraded. In the meantime this'll allow us to
further trim down the `Reactor` APIs to their final state.
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This commit uses a script to rename `Core` to `Reactor` all at once, notably:
find . -name '*.rs' | xargs sed -i 's/\bCore\b/Reactor/g'
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This commit renames the various constructors of networking types to have a
`_std` suffix instead of a smorgasboard of other suffixes, canonicalizing on
`_std` as the suffix for constructors which take the libstd corresponding types.
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* remove unused #[macro_use] and #[allow(unused_macros)]
* remove unused FnBox trait
* remove unused temporary variable
* remove Evented trait requirement to implement Debug
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Helps avoid spurious errors when testing.
Closes #277
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In accordance with tokio-rs/tokio-rfcs#3, the executor functionality of
Tokio is being removed and will be relocated into futures-rs as a
"current thread" executor.
This PR removes task execution from the code base. As a temporary
mesure, all examples and tests are switched to using CpuPool.
Depends on #19.
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