4 releases (1 stable)
1.0.0 | Feb 2, 2021 |
---|---|
0.2.0 | Jul 8, 2019 |
0.1.1 | Apr 5, 2019 |
0.1.0 | Mar 25, 2019 |
#261 in Unix APIs
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posixmq
A Rust library for using posix message queues.
let mq = posixmq::PosixMq::open("/queue").expect("cannot open /queue");
let mut buf = vec![0; mq.attributes().unwrap_or_default().max_msg_len];
loop {
let (priority, len) = mq.recv(&mut buf).expect("recv() failed");
let msg = std::str::from_utf8(&buf[..len]).expect("not UTF-8");
println!("priority: {:3}, message: {}", priority, msg);
}
Supported Operating Systems
posixmq has been tested to work on Linux, FreeBSD, NetBSD, DragonFly BSD and OmniOSce, but not all features are available everywhere. See rustdoc for details.
*macOS, OpenBSD, Android and Windows doesn't have posix message queues, and this crate will fail to compile there.
Optional mio Integration
On Linux, FreeBSD and DragonFly BSD, posix message queues can be registered with epoll / kqueue, and therefore used with mio.
Both mio version 0.6 and 0.7 are supported, through the opt-in crate features mio_06
and mio_07
.
Enable the feature for the mio version you use in Cargo.toml with for example:
[dependencies]
mio = {version="0.7", features=["os-poll"]} # you probably need os-poll
posixmq = {version="1.0", features=["mio_07"]}
Also remember to open the message queues in nonblocking mode.
Minimum supported Rust version
The minimum Rust version for 1.0.* releases is 1.39.0 if the mio_07
feature is enabled, and 1.31.1 otherwise.
Later 1.*.0 releases might increase this. Until rustup has builds for DragonFly and Illumos, the minimum version will not be increased past what is available in repositories for these operating systems.
New optional features might require newer Rust versions.
To lock to a minor release, use posixmq = "1.0.*"
in Cargo.toml, or copy posixmq.rs into your project and remove feature gates as necessary.
License
Licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (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.
Release History
Version 1.0.0 (2021-02-02)
- Return errors from
.attributes()
,.is_nonblocking()
and.is_cloexec()
. For consistency withstd
and to make it easier to catch bugs. - Rename
.receive()
to.recv()
for consistency withstd
. (.receive_deadline()
and.receive_timeout()
are also renamed to.recv_deadline()
and.recv_timeout()
) - Rename
unlink()
toremove_queue()
for consistency withstd
. (unlink_c()
is also renamed toremove_queue_c()
) - Make
Attributes
partially opaque for future extensibility, and implementDefault
for it. - Remove
name_from_bytes()
. - Rename
mio
feature for integrating with Mio 0.6 tomio_06
. - Add
mio_07
feature for integrating with Mio 0.7. - Implement
Clone
for the borrowing iteratorposixmq::Iter
. - Avoid allocating for queue names shorter than 47 bytes.
- Disable non-standard features on unknown operating systems.
Version 0.2.0 (2019-07-08)
- Change
PosixMq::open()
to open in read-write mode instead of read-only. - Rename
OpenOptions.permissions()
to.mode()
for consistency withstd
. - Remove
OpenOptions.not_cloexec()
. - Add
.send_timeout()
,.send_deadline()
,.receive_timeout()
and.receive_deadline()
. - Add
Iter
andIntoIter
receiving iterator types.
Version 0.1.1 (2019-04-05)
- Add
.try_clone()
. - Add
PosixMq::from_raw_mqd()
,.as_raw_mqd()
and.into_raw_mqd()
. - Implement
Sync
on FreeBSD. - Support DragonFly BSD, NetBSD and Illumos.
- Support ARM targets and
linux-x86_64-unknown-gnux32
.
Version 0.1.0 (2019-03-25)
- (initial release).
- Support Linux and FreeBSD.
Dependencies
~0.4–510KB