std: Add {read,write}_vectored for more types
#59852
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This commit implements the `{read,write}_vectored` methods on more types
in the standard library, namely:
* `std::fs::File`
* `std::process::ChildStd{in,out,err}`
* `std::io::Std{in,out,err}`
* `std::io::Std{in,out,err}Lock`
* `std::io::Std{in,out,err}Raw`
Where supported the OS implementations hook up to native support,
otherwise it falls back to the already-defaulted implementation.
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fbstj
reviewed
Apr 10, 2019
| @@ -13,8 +13,12 @@ impl Stdin { | |||
| } | |||
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| pub fn read(&self, data: &mut [u8]) -> io::Result<usize> { | |||
| self.read_vectored(&mut [IoVecMut::new(data)]) | |||
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are vectored reads somehow more "fundamental" on wasi? might be worth a comment?
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They are yeah where at the syscall layer there's only vectored reads/writes, but this is in general just deduplicating code
fbstj
reviewed
Apr 10, 2019
| let ret = fd.write(buf); | ||
| fd.into_raw(); // do not close this FD | ||
| ret | ||
| ManuallyDrop::new(FileDesc::new(libc::STDOUT_FILENO)).write(buf) |
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is this change coming from some other PR?
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Nah this is an intended change for this PR
Centril
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Apr 12, 2019
std: Add `{read,write}_vectored` for more types
This commit implements the `{read,write}_vectored` methods on more types
in the standard library, namely:
* `std::fs::File`
* `std::process::ChildStd{in,out,err}`
* `std::io::Std{in,out,err}`
* `std::io::Std{in,out,err}Lock`
* `std::io::Std{in,out,err}Raw`
Where supported the OS implementations hook up to native support,
otherwise it falls back to the already-defaulted implementation.
Centril
added a commit
to Centril/rust
that referenced
this pull request
Apr 13, 2019
std: Add `{read,write}_vectored` for more types
This commit implements the `{read,write}_vectored` methods on more types
in the standard library, namely:
* `std::fs::File`
* `std::process::ChildStd{in,out,err}`
* `std::io::Std{in,out,err}`
* `std::io::Std{in,out,err}Lock`
* `std::io::Std{in,out,err}Raw`
Where supported the OS implementations hook up to native support,
otherwise it falls back to the already-defaulted implementation.
Centril
added a commit
to Centril/rust
that referenced
this pull request
Apr 13, 2019
Rollup of 18 pull requests Successful merges: - rust-lang#59612 (Use normal newtype_index macro for MIR dataflows) - rust-lang#59675 (Stabilize the `alloc` crate.) - rust-lang#59708 (Mark variables captured by reference as mutable correctly) - rust-lang#59735 (remove lookup_char_pos_adj) - rust-lang#59747 (Copy book.toml unstable book generator) - rust-lang#59796 (Retire `IsNotConst` naming) - rust-lang#59804 (Clean up jobserver integration) - rust-lang#59818 (Eliminate `FnBox` usages from libstd.) - rust-lang#59830 (Fix links on keyword docs.) - rust-lang#59835 (Re-export NonZero signed variant in std) - rust-lang#59852 (std: Add `{read,write}_vectored` for more types) - rust-lang#59855 (Fix attributes position in type declaration) - rust-lang#59858 (Make duplicate matcher bindings a hard error) - rust-lang#59879 (Use SecRandomCopyBytes instead of /dev/urandom on MacOS) - rust-lang#59899 (In `-Zprint-type-size` output, sort enum variants by size.) - rust-lang#59912 (MaybeUninit: remove deprecated functions) - rust-lang#59925 (Fix paste error in split_ascii_whitespace docs.) - rust-lang#59930 (Exclude some copies of old book editions from search engines) Failed merges: r? @ghost
bors
added a commit
that referenced
this pull request
Apr 13, 2019
Rollup of 18 pull requests Successful merges: - #59612 (Use normal newtype_index macro for MIR dataflows) - #59675 (Stabilize the `alloc` crate.) - #59708 (Mark variables captured by reference as mutable correctly) - #59735 (remove lookup_char_pos_adj) - #59747 (Copy book.toml unstable book generator) - #59796 (Retire `IsNotConst` naming) - #59804 (Clean up jobserver integration) - #59818 (Eliminate `FnBox` usages from libstd.) - #59830 (Fix links on keyword docs.) - #59835 (Re-export NonZero signed variant in std) - #59852 (std: Add `{read,write}_vectored` for more types) - #59855 (Fix attributes position in type declaration) - #59858 (Make duplicate matcher bindings a hard error) - #59879 (Use SecRandomCopyBytes instead of /dev/urandom on MacOS) - #59899 (In `-Zprint-type-size` output, sort enum variants by size.) - #59912 (MaybeUninit: remove deprecated functions) - #59925 (Fix paste error in split_ascii_whitespace docs.) - #59930 (Exclude some copies of old book editions from search engines) Failed merges: r? @ghost
Centril
added a commit
to Centril/rust
that referenced
this pull request
Apr 13, 2019
std: Add `{read,write}_vectored` for more types
This commit implements the `{read,write}_vectored` methods on more types
in the standard library, namely:
* `std::fs::File`
* `std::process::ChildStd{in,out,err}`
* `std::io::Std{in,out,err}`
* `std::io::Std{in,out,err}Lock`
* `std::io::Std{in,out,err}Raw`
Where supported the OS implementations hook up to native support,
otherwise it falls back to the already-defaulted implementation.
Centril
added a commit
to Centril/rust
that referenced
this pull request
Apr 13, 2019
std: Add `{read,write}_vectored` for more types
This commit implements the `{read,write}_vectored` methods on more types
in the standard library, namely:
* `std::fs::File`
* `std::process::ChildStd{in,out,err}`
* `std::io::Std{in,out,err}`
* `std::io::Std{in,out,err}Lock`
* `std::io::Std{in,out,err}Raw`
Where supported the OS implementations hook up to native support,
otherwise it falls back to the already-defaulted implementation.
bors
added a commit
that referenced
this pull request
Apr 13, 2019
Rollup of 16 pull requests Successful merges: - #59675 (Stabilize the `alloc` crate.) - #59708 (Mark variables captured by reference as mutable correctly) - #59735 (remove lookup_char_pos_adj) - #59747 (Copy book.toml unstable book generator) - #59796 (Retire `IsNotConst` naming) - #59804 (Clean up jobserver integration) - #59818 (Eliminate `FnBox` usages from libstd.) - #59830 (Fix links on keyword docs.) - #59835 (Re-export NonZero signed variant in std) - #59852 (std: Add `{read,write}_vectored` for more types) - #59855 (Fix attributes position in type declaration) - #59858 (Make duplicate matcher bindings a hard error) - #59899 (In `-Zprint-type-size` output, sort enum variants by size.) - #59912 (MaybeUninit: remove deprecated functions) - #59925 (Fix paste error in split_ascii_whitespace docs.) - #59930 (Exclude some copies of old book editions from search engines) Failed merges: r? @ghost
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This commit implements the
{read,write}_vectoredmethods on more typesin the standard library, namely:
std::fs::Filestd::process::ChildStd{in,out,err}std::io::Std{in,out,err}std::io::Std{in,out,err}Lockstd::io::Std{in,out,err}RawWhere supported the OS implementations hook up to native support,
otherwise it falls back to the already-defaulted implementation.