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This commits takes a similar strategy to the previous commit to implement
close_accept and clone for the native win32 pipes implementation.
Closes #15595
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This commits implements {Tcp,Unix}Acceptor::{clone,close_accept} methods for
unix. A windows implementation is coming in a later commit.
The clone implementation is based on atomic reference counting (as with all
other clones), and the close_accept implementation is based on selecting on a
self-pipe which signals that a close has been seen.
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This enables `num_milliseconds` to return an `i64` again instead of
`Option<i64>`, because it is guaranteed not to overflow.
The Duration range is now rougly 300e6 years (positive and negative),
whereas it was 300e9 years previously. To put these numbers in
perspective, 300e9 years is about 21 times the age of the universe
(according to Wolfram|Alpha). 300e6 years is about 1/15 of the age of
the earth (according to Wolfram|Alpha).
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This changes the internal representation of `Duration` from
days: i32,
secs: i32,
nanos: u32
to
secs: i64,
nanos: i32
This resolves #16466. Some methods now take `i64` instead of `i32` due
to the increased range. Some methods, like `num_milliseconds`, now
return an `Option<i64>` instead of `i64`, because the range of
`Duration` is now larger than e.g. 2^63 milliseconds.
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declared with the same name in the same scope.
This breaks several common patterns. First are unused imports:
use foo::bar;
use baz::bar;
Change this code to the following:
use baz::bar;
Second, this patch breaks globs that import names that are shadowed by
subsequent imports. For example:
use foo::*; // including `bar`
use baz::bar;
Change this code to remove the glob:
use foo::{boo, quux};
use baz::bar;
Or qualify all uses of `bar`:
use foo::{boo, quux};
use baz;
... baz::bar ...
Finally, this patch breaks code that, at top level, explicitly imports
`std` and doesn't disable the prelude.
extern crate std;
Because the prelude imports `std` implicitly, there is no need to
explicitly import it; just remove such directives.
The old behavior can be opted into via the `import_shadowing` feature
gate. Use of this feature gate is discouraged.
This implements RFC #116.
Closes #16464.
[breaking-change]
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This implements some of the recommendations from https://github.com/rust-lang/meeting-minutes/blob/master/Meeting-API-review-2014-08-06.md.
Explanation in commits.
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[breaking-change]
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This is only breaking if you were previously specifying a duration
of zero for some mysterious reason.
[breaking-change]
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[breaking-change]
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ImmutableVector -> ImmutableSlice
ImmutableEqVector -> ImmutableEqSlice
ImmutableOrdVector -> ImmutableOrdSlice
MutableVector -> MutableSlice
MutableVectorAllocating -> MutableSliceAllocating
MutableCloneableVector -> MutableCloneableSlice
MutableOrdVector -> MutableOrdSlice
These are all in the prelude so most code will not break.
[breaking-change]
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Errors can be printed with {}, printing with {:?} does not work very
well.
Not actually related to this PR, but it came up when running the tests
and now is as good a time to fix it as any.
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This PR is the outcome of the library stabilization meeting for the
`liballoc::owned` and `libcore::cell` modules.
Aside from the stability attributes, there are a few breaking changes:
* The `owned` modules is now named `boxed`, to better represent its
contents. (`box` was unavailable, since it's a keyword.) This will
help avoid the misconception that `Box` plays a special role wrt
ownership.
* The `AnyOwnExt` extension trait is renamed to `BoxAny`, and its `move`
method is renamed to `downcast`, in both cases to improve clarity.
* The recently-added `AnySendOwnExt` extension trait is removed; it was
not being used and is unnecessary.
[breaking-change]
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[breaking-change]
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We leave them for compatibility, but mark them as deprecated.
Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
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POSIX has recvfrom(2) and sendto(2), but their name seem not to be
suitable with Rust. We already renamed getpeername(2) and
getsockname(2), so I think it makes sense.
Alternatively, `receive_from` would be fine. However, we have `.recv()`
so I chose `recv_from`.
Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
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When cloning a stream, the data is already guaranteed to be in a consistent
state, so there's no need to perform a zeroing. This prevents segfaults as seen
in #15231
Closes #15231
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We use re-exported pathes (e.g. std::io::Command) and original ones
(e.g. std::io::process::Command) together in examples now. Using
re-exported ones consistently avoids confusion.
Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
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This breaks a fair amount of code. The typical patterns are:
* `for _ in range(0, 10)`: change to `for _ in range(0u, 10)`;
* `println!("{}", 3)`: change to `println!("{}", 3i)`;
* `[1, 2, 3].len()`: change to `[1i, 2, 3].len()`.
RFC #30. Closes #6023.
[breaking-change]
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Also renames the `Container` trait to `Collection`.
[breaking-change]
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This completes the last stage of the renaming of the comparison hierarchy of
traits. This change renames TotalEq to Eq and TotalOrd to Ord.
In the future the new Eq/Ord will be filled out with their appropriate methods,
but for now this change is purely a renaming change.
[breaking-change]
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This is part of the ongoing renaming of the equality traits. See #12517 for more
details. All code using Eq/Ord will temporarily need to move to Partial{Eq,Ord}
or the Total{Eq,Ord} traits. The Total traits will soon be renamed to {Eq,Ord}.
cc #12517
[breaking-change]
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[breaking-change]
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1. Wherever the `buf` field of a `Formatter` was used, the `Formatter` is used
instead.
2. The usage of `write_fmt` is minimized as much as possible, the `write!` macro
is preferred wherever possible.
3. Usage of `fmt::write` is minimized, favoring the `write!` macro instead.
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Signed-off-by: OGINO Masanori <masanori.ogino@gmail.com>
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Fall back to get_host_addresses to try a DNS lookup if we can't
parse it as an IP address.
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Prior to this commit, TcpStream::connect and TcpListener::bind took a
single SocketAddr argument. This worked well enough, but the API felt a
little too "low level" for most simple use cases.
A great example is connecting to rust-lang.org on port 80. Rust users would
need to:
1. resolve the IP address of rust-lang.org using
io::net::addrinfo::get_host_addresses.
2. check for errors
3. if all went well, use the returned IP address and the port number
to construct a SocketAddr
4. pass this SocketAddr to TcpStream::connect.
I'm modifying the type signature of TcpStream::connect and
TcpListener::bind so that the API is a little easier to use.
TcpStream::connect now accepts two arguments: a string describing the
host/IP of the host we wish to connect to, and a u16 representing the
remote port number.
Similarly, TcpListener::bind has been modified to take two arguments:
a string describing the local interface address (e.g. "0.0.0.0" or
"127.0.0.1") and a u16 port number.
Here's how to port your Rust code to use the new TcpStream::connect API:
// old ::connect API
let addr = SocketAddr{ip: Ipv4Addr{127, 0, 0, 1}, port: 8080};
let stream = TcpStream::connect(addr).unwrap()
// new ::connect API (minimal change)
let addr = SocketAddr{ip: Ipv4Addr{127, 0, 0, 1}, port: 8080};
let stream = TcpStream::connect(addr.ip.to_str(), addr.port()).unwrap()
// new ::connect API (more compact)
let stream = TcpStream::connect("127.0.0.1", 8080).unwrap()
// new ::connect API (hostname)
let stream = TcpStream::connect("rust-lang.org", 80)
Similarly, for TcpListener::bind:
// old ::bind API
let addr = SocketAddr{ip: Ipv4Addr{0, 0, 0, 0}, port: 8080};
let mut acceptor = TcpListener::bind(addr).listen();
// new ::bind API (minimal change)
let addr = SocketAddr{ip: Ipv4Addr{0, 0, 0, 0}, port: 8080};
let mut acceptor = TcpListener::bind(addr.ip.to_str(), addr.port()).listen()
// new ::bind API (more compact)
let mut acceptor = TcpListener::bind("0.0.0.0", 8080).listen()
[breaking-change]
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This commit revisits the `cast` module in libcore and libstd, and scrutinizes
all functions inside of it. The result was to remove the `cast` module entirely,
folding all functionality into the `mem` module. Specifically, this is the fate
of each function in the `cast` module.
* transmute - This function was moved to `mem`, but it is now marked as
#[unstable]. This is due to planned changes to the `transmute`
function and how it can be invoked (see the #[unstable] comment).
For more information, see RFC 5 and #12898
* transmute_copy - This function was moved to `mem`, with clarification that is
is not an error to invoke it with T/U that are different
sizes, but rather that it is strongly discouraged. This
function is now #[stable]
* forget - This function was moved to `mem` and marked #[stable]
* bump_box_refcount - This function was removed due to the deprecation of
managed boxes as well as its questionable utility.
* transmute_mut - This function was previously deprecated, and removed as part
of this commit.
* transmute_mut_unsafe - This function doesn't serve much of a purpose when it
can be achieved with an `as` in safe code, so it was
removed.
* transmute_lifetime - This function was removed because it is likely a strong
indication that code is incorrect in the first place.
* transmute_mut_lifetime - This function was removed for the same reasons as
`transmute_lifetime`
* copy_lifetime - This function was moved to `mem`, but it is marked
`#[unstable]` now due to the likelihood of being removed in
the future if it is found to not be very useful.
* copy_mut_lifetime - This function was also moved to `mem`, but had the same
treatment as `copy_lifetime`.
* copy_lifetime_vec - This function was removed because it is not used today,
and its existence is not necessary with DST
(copy_lifetime will suffice).
In summary, the cast module was stripped down to these functions, and then the
functions were moved to the `mem` module.
transmute - #[unstable]
transmute_copy - #[stable]
forget - #[stable]
copy_lifetime - #[unstable]
copy_mut_lifetime - #[unstable]
[breaking-change]
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This test runs successfully manually, but the bots are having trouble getting
this test to pass. Ignore it on freebsd for now.
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This was intended as part of the I/O timeouts commit, but it was mistakenly
forgotten. The type of the timeout argument is not guaranteed to remain constant
into the future.
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API Changes:
- get_host_addresses() returns IoResult<Vec<IpAddr>>
- Process.extra_io is Vec<Option<io::PipeStream>>
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This test runs successfully manually, but the bots are having trouble getting
this test to pass. Ignore it on freebsd for now.
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This was intended as part of the I/O timeouts commit, but it was mistakenly
forgotten. The type of the timeout argument is not guaranteed to remain constant
into the future.
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This is the last remaining networkig object to implement timeouts for. This
takes advantage of the CancelIo function and the already existing asynchronous
I/O functionality of pipes.
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These timeouts all follow the same pattern as established by the timeouts on
acceptors. There are three methods: set_timeout, set_read_timeout, and
set_write_timeout. Each of these sets a point in the future after which
operations will time out.
Timeouts with cloned objects are a little trickier. Each object is viewed as
having its own timeout, unaffected by other objects' timeouts. Additionally,
timeouts do not propagate when a stream is cloned or when a cloned stream has
its timeouts modified.
This commit is just the public interface which will be exposed for timeouts, the
implementation will come in later commits.
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Two new methods were added to TcpStream and UnixStream:
fn close_read(&mut self) -> IoResult<()>;
fn close_write(&mut self) -> IoResult<()>;
These two methods map to shutdown()'s behavior (the system call on unix),
closing the reading or writing half of a duplex stream. These methods are
primarily added to allow waking up a pending read in another task. By closing
the reading half of a connection, all pending readers will be woken up and will
return with EndOfFile. The close_write() method was added for symmetry with
close_read(), and I imagine that it will be quite useful at some point.
Implementation-wise, librustuv got the short end of the stick this time. The
native versions just delegate to the shutdown() syscall (easy). The uv versions
can leverage uv_shutdown() for tcp/unix streams, but only for closing the
writing half. Closing the reading half is done through some careful dancing to
wake up a pending reader.
As usual, windows likes to be different from unix. The windows implementation
uses shutdown() for sockets, but shutdown() is not available for named pipes.
Instead, CancelIoEx was used with same fancy synchronization to make sure
everyone knows what's up.
cc #11165
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Two new methods were added to TcpStream and UnixStream:
fn close_read(&mut self) -> IoResult<()>;
fn close_write(&mut self) -> IoResult<()>;
These two methods map to shutdown()'s behavior (the system call on unix),
closing the reading or writing half of a duplex stream. These methods are
primarily added to allow waking up a pending read in another task. By closing
the reading half of a connection, all pending readers will be woken up and will
return with EndOfFile. The close_write() method was added for symmetry with
close_read(), and I imagine that it will be quite useful at some point.
Implementation-wise, librustuv got the short end of the stick this time. The
native versions just delegate to the shutdown() syscall (easy). The uv versions
can leverage uv_shutdown() for tcp/unix streams, but only for closing the
writing half. Closing the reading half is done through some careful dancing to
wake up a pending reader.
As usual, windows likes to be different from unix. The windows implementation
uses shutdown() for sockets, but shutdown() is not available for named pipes.
Instead, CancelIoEx was used with same fancy synchronization to make sure
everyone knows what's up.
cc #11165
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These implementations must live in libstd right now because the fmt module has
not been migrated yet. This will occur in a later PR.
Just to be clear, there are new extension traits, but they are not necessary
once the std::fmt module has migrated to libcore, which is a planned migration
in the future.
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for `~str`/`~[]`.
Note that `~self` still remains, since I forgot to add support for
`Box<self>` before the snapshot.
r? @brson or @alexcrichton or whoever
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