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Backport mem::forget to beta
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An automated script was run against the `.rs` and `.md` files,
subsituting every occurrence of `task` with `thread`. In the `.rs`
files, only the texts in the comment blocks were affected.
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This commit is an implementation of [RFC 1066][rfc] where the conclusion was
that leaking a value is a safe operation in Rust code, so updating the signature
of this function follows suit.
[rfc]: https://github.com/rust-lang/rfcs/blob/master/text/1066-safe-mem-forget.md
Closes #25186
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Currently if a standard I/O handle is set to inherited on Windows, no action is
taken and the slot in the process information description is set to
`INVALID_HANDLE_VALUE`. Due to our passing of `STARTF_USESTDHANDLES`, however,
this means that the handle is actually set to nothing and if a child tries to
print it will generate an error.
This commit fixes this behavior by explicitly creating stdio handles to be
placed in these slots by duplicating the current process's I/O handles. This is
presumably what previously happened silently by using a file-descriptor-based
implementation instead of a `HANDLE`-centric implementation.
Along the way this cleans up a lot of code in `Process::spawn` for Windows by
ensuring destructors are always run, using more RAII, and limiting the scope of
`unsafe` wherever possible.
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Conflicts:
src/test/run-pass/task-stderr.rs
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This API was exercised in a few tests and mirrors the `from_str_radix`
functionality of the integer types.
Conflicts:
src/doc/trpl/traits.md
src/libstd/sys/windows/fs2.rs
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r? @alexcrichton
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This commit removes the last remnants of file descriptors from the Windows
implementation of `std::sys` by using `CreatePipe` to create anonymous pipes
instead of the `pipe` shim provided in msvcrt.
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This commit modifies the socket creation functions on windows to always specify
the `WSA_FLAG_OVERLAPPED` and `WSA_FLAG_NO_HANDLE_INHERIT` flags by default. The
overlapped flag enables IOCP APIs on Windows to be used with the socket at no
cost, enabling better interoperation with external libraries. The no handle
inherit flag mirrors the upcoming change to Unix to set CLOEXEC by default for
all handles.
Closes #24206
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`s/(?<!\{ self)(?<=\.)len\(\) == 0/is_empty()/g`
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This commit removes the last remnants of file descriptors from the Windows
implementation of `std::sys` by using `CreatePipe` to create anonymous pipes
instead of the `pipe` shim provided in msvcrt.
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This commit modifies the socket creation functions on windows to always specify
the `WSA_FLAG_OVERLAPPED` and `WSA_FLAG_NO_HANDLE_INHERIT` flags by default. The
overlapped flag enables IOCP APIs on Windows to be used with the socket at no
cost, enabling better interoperation with external libraries. The no handle
inherit flag mirrors the upcoming change to Unix to set CLOEXEC by default for
all handles.
Closes #24206
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Conflicts:
src/libstd/net/ip.rs
src/libstd/sys/unix/fs.rs
src/libstd/sys/unix/mod.rs
src/libstd/sys/windows/mod.rs
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This commit entirely removes the old I/O, path, and rand modules. All
functionality has been deprecated and unstable for quite some time now!
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As pointed out in [RFC issue 1043][rfc] it is quite useful to have the standard
I/O types to provide the contract that they are the sole owner of the underlying
object they represent. This guarantee enables writing safe interfaces like the
`MemoryMap` API sketched out in that issue.
[rfc]: https://github.com/rust-lang/rfcs/issues/1043
As constructing objects from these raw handles may end up violating these
ownership gurantees, the functions for construction are now marked unsafe.
[breaking-change]
Closes rust-lang/rfcs#1043
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The current implementation of using GetFinalPathNameByHandle actually reads all
intermediate links instead of just looking at the current link. This commit
alters the behavior of the function to use a different API which correctly reads
only one level of the soft link.
[breaking-change]
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The logic for only closing file descriptors >= 3 was inherited from quite some
time ago and ends up meaning that some internal APIs are less consistent than
they should be. By unconditionally closing everything entering a `FileDesc` we
ensure that we're consistent in our behavior as well as robustly handling the
stdio case.
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* De-indent quite a bit by removing usage of FnOnce closures
* Clearly separate code for the parent/child after the fork
* Use `fs2::{File, OpenOptions}` instead of calling `open` manually
* Use RAII to close I/O objects wherever possible
* Remove loop for closing all file descriptors, all our own ones are now
`CLOEXEC` by default so they cannot be inherited
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As pointed out in [RFC issue 1043][rfc] it is quite useful to have the standard
I/O types to provide the contract that they are the sole owner of the underlying
object they represent. This guarantee enables writing safe interfaces like the
`MemoryMap` API sketched out in that issue.
[rfc]: https://github.com/rust-lang/rfcs/issues/1043
As constructing objects from these raw handles may end up violating these
ownership gurantees, the functions for construction are now marked unsafe.
[breaking-change]
Closes rust-lang/rfcs#1043
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This commit stabilizes the old `io::Error::from_os_error` after being renamed to
use the `raw_os_error` terminology instead. This function is often useful when
writing bindings to OS functions but only actually converting to an I/O error at
a later point.
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This commit stabilizes the old `io::Error::from_os_error` after being renamed to
use the `raw_os_error` terminology instead. This function is often useful when
writing bindings to OS functions but only actually converting to an I/O error at
a later point.
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The current implementation of using GetFinalPathNameByHandle actually reads all
intermediate links instead of just looking at the current link. This commit
alters the behavior of the function to use a different API which correctly reads
only one level of the soft link.
[breaking-change]
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write_fmt calls write for each formatted field. The default implementation of write_fmt is used,
which will call write on not-yet-locked stdout (and write locking after), therefore making print!
in multithreaded environment still interleave contents of two separate prints.
This patch implements reentrant mutexes, changes stdio handles to use these mutexes and overrides
write_fmt to lock the stdio handle for the whole duration of the call.
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This commit is an implementation of [RFC #1011][rfc] which adds an `exit`
function to the standard library for immediately terminating the current process
with a specified exit code.
[rfc]: https://github.com/rust-lang/rfcs/pull/1011
Closes #23914
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Conflicts:
src/libcollectionstest/fmt.rs
src/libcollectionstest/lib.rs
src/libcollectionstest/str.rs
src/libcore/error.rs
src/libstd/fs.rs
src/libstd/io/cursor.rs
src/libstd/os.rs
src/libstd/process.rs
src/libtest/lib.rs
src/test/run-pass-fulldeps/compiler-calls.rs
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This commit cleans out a large amount of deprecated APIs from the standard
library and some of the facade crates as well, updating all users in the
compiler and in tests as it goes along.
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This commit stabilizes the platform-specific `io` modules, specifically around
the traits having to do with the raw representation of each object on each
platform.
Specifically, the following material was stabilized:
* `AsRaw{Fd,Socket,Handle}`
* `RawFd` (renamed from `Fd`)
* `RawHandle` (renamed from `Handle`)
* `RawSocket` (renamed from `Socket`)
* `AsRaw{Fd,Socket,Handle}` implementations
* `std::os::{unix, windows}::io`
The following material was added as `#[unstable]`:
* `FromRaw{Fd,Socket,Handle}`
* Implementations for various primitives
There are a number of future improvements that are possible to make to this
module, but this should cover a good bit of functionality desired from these
modules for now. Some specific future additions may include:
* `IntoRawXXX` traits to consume the raw representation and cancel the
auto-destructor.
* `Fd`, `Socket`, and `Handle` abstractions that behave like Rust objects and
have nice methods for various syscalls.
At this time though, these are considered backwards-compatible extensions and
will not be stabilized at this time.
This commit is a breaking change due to the addition of `Raw` in from of the
type aliases in each of the platform-specific modules.
[breaking-change]
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This commit is an implementation of [RFC #1011][rfc] which adds an `exit`
function to the standard library for immediately terminating the current process
with a specified exit code.
[rfc]: https://github.com/rust-lang/rfcs/pull/1011
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This commit stabilizes the `std::num` module:
* The `Int` and `Float` traits are deprecated in favor of (1) the
newly-added inherent methods and (2) the generic traits available in
rust-lang/num.
* The `Zero` and `One` traits are reintroduced in `std::num`, which
together with various other traits allow you to recover the most
common forms of generic programming.
* The `FromStrRadix` trait, and associated free function, is deprecated
in favor of inherent implementations.
* A wide range of methods and constants for both integers and floating
point numbers are now `#[stable]`, having been adjusted for integer
guidelines.
* `is_positive` and `is_negative` are renamed to `is_sign_positive` and
`is_sign_negative`, in order to address #22985
* The `Wrapping` type is moved to `std::num` and stabilized;
`WrappingOps` is deprecated in favor of inherent methods on the
integer types, and direct implementation of operations on
`Wrapping<X>` for each concrete integer type `X`.
Closes #22985
Closes #21069
[breaking-change]
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All methods are inlined into Iterator with `Self: Sized` bounds to make
sure Iterator is still object safe.
[breaking-change]
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Pretty much what it says on the tin.
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`std::dynamic_library` is currently using `std::old_io::Path` specifically. This change brings the API in alignment with `std::fs::File` by having it take `std::path::AsPath`. The Windows code should work, but I admittedly haven't tried it (I don't have a Windows machine readily available right now).
r? @alexcrichton
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Conflicts:
src/librustc/middle/ty.rs
src/librustc_trans/trans/adt.rs
src/librustc_typeck/check/mod.rs
src/libserialize/json.rs
src/test/run-pass/spawn-fn.rs
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This commit stabilizes the platform-specific `io` modules, specifically around
the traits having to do with the raw representation of each object on each
platform.
Specifically, the following material was stabilized:
* `AsRaw{Fd,Socket,Handle}`
* `RawFd` (renamed from `Fd`)
* `RawHandle` (renamed from `Handle`)
* `RawSocket` (renamed from `Socket`)
* `AsRaw{Fd,Socket,Handle}` implementations
* `std::os::{unix, windows}::io`
The following material was added as `#[unstable]`:
* `FromRaw{Fd,Socket,Handle}`
* Implementations for various primitives
There are a number of future improvements that are possible to make to this
module, but this should cover a good bit of functionality desired from these
modules for now. Some specific future additions may include:
* `IntoRawXXX` traits to consume the raw representation and cancel the
auto-destructor.
* `Fd`, `Socket`, and `Handle` abstractions that behave like Rust objects and
have nice methods for various syscalls.
At this time though, these are considered backwards-compatible extensions and
will not be stabilized at this time.
This commit is a breaking change due to the addition of `Raw` in from of the
type aliases in each of the platform-specific modules.
[breaking-change]
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This commit revises `path` and `os_str` to use blanket impls for `From`
on reference types. This both cuts down on the number of required impls,
and means that you can pass through e.g. `T: AsRef<OsStr>` to
`PathBuf::from` without an intermediate call to `as_ref`.
It also makes a FIXME note for later generalizing the blanket impls for
`AsRef` and `AsMut` to use `Deref`/`DerefMut`, once it is possible to do
so.
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Now that support has been removed, all lingering use cases are renamed.
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This commit removes the reexports of `old_io` traits as well as `old_path` types
and traits from the prelude. This functionality is now all deprecated and needs
to be removed to make way for other functionality like `Seek` in the `std::io`
module (currently reexported as `NewSeek` in the io prelude).
Closes #23377
Closes #23378
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