bjoernager/rust
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Auto merge of #81156 - DrMeepster:read_buf, r=joshtriplett

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Implement most of RFC 2930, providing the ReadBuf abstraction

This replaces the `Initializer` abstraction for permitting reading into uninitialized buffers, closing #42788.

This leaves several APIs described in the RFC out of scope for the initial implementation:

* read_buf_vectored
* `ReadBufs`

Closes #42788, by removing the relevant APIs.
This commit is contained in:
bors 2021-12-09 10:11:55 +00:00
commit 3b263ceb5c
25 changed files with 898 additions and 288 deletions
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14
library/std/src/process.rs
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@ -110,7 +110,7 @@ use crate::convert::Infallible;
use crate::ffi::OsStr;
use crate::fmt;
use crate::fs;
use crate::io::{self, Initializer, IoSlice, IoSliceMut};
use crate::io::{self, IoSlice, IoSliceMut};
use crate::num::NonZeroI32;
use crate::path::Path;
use crate::str;
@ -362,12 +362,6 @@ impl Read for ChildStdout {
fn is_read_vectored(&self) -> bool {
self.inner.is_read_vectored()
}
#[inline]
unsafe fn initializer(&self) -> Initializer {
// SAFETY: Read is guaranteed to work on uninitialized memory
unsafe { Initializer::nop() }
}
}
impl AsInner<AnonPipe> for ChildStdout {
@ -429,12 +423,6 @@ impl Read for ChildStderr {
fn is_read_vectored(&self) -> bool {
self.inner.is_read_vectored()
}
#[inline]
unsafe fn initializer(&self) -> Initializer {
// SAFETY: Read is guaranteed to work on uninitialized memory
unsafe { Initializer::nop() }
}
}
impl AsInner<AnonPipe> for ChildStderr {