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Author SHA1 Message Date
Eliza Weisman 612e0d8601 add debug ref count logging 2021-06-07 12:49:34 -07:00
39 changed files with 810 additions and 6191 deletions
+39 -78
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@@ -7,13 +7,11 @@ on:
push:
branches:
- master
schedule:
- cron: '0 2 * * 0'
env:
RUSTFLAGS: -Dwarnings
RUST_BACKTRACE: 1
nightly: nightly-2024-09-15
nightly: nightly-2021-04-13
defaults:
run:
@@ -25,11 +23,11 @@ jobs:
name: rustfmt
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- name: Install Rust
run: rustup update stable
run: rustup update stable && rustup default stable
- name: Check formatting
run: cargo fmt --all --check
run: cargo fmt --all -- --check
# TODO
# # Apply clippy lints
@@ -37,7 +35,7 @@ jobs:
# name: clippy
# runs-on: ubuntu-latest
# steps:
# - uses: actions/checkout@v4
# - uses: actions/checkout@v2
# - name: Apply clippy lints
# run: cargo clippy --all-features
@@ -50,11 +48,11 @@ jobs:
name: minrust
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Install cargo-hack
uses: taiki-e/install-action@cargo-hack
- uses: actions/checkout@v2
- name: Install Rust
run: rustup update 1.39.0 && rustup default 1.39.0
- name: Check
run: cargo hack check --feature-powerset --optional-deps --rust-version
run: . ci/test-stable.sh check
# Stable
stable:
@@ -63,109 +61,73 @@ jobs:
matrix:
os:
- ubuntu-latest
- ubuntu-22.04-arm # TODO: update to 24.04 when https://github.com/rust-lang/rust/issues/135867 solved
- macos-latest
- windows-latest
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- name: Install Rust
# --no-self-update is necessary because the windows environment cannot self-update rustup.exe.
run: rustup update stable --no-self-update
- name: Install cargo-hack
uses: taiki-e/install-action@cargo-hack
run: rustup update stable --no-self-update && rustup default stable
- name: Test
run: ci/test-stable.sh test
run: . ci/test-stable.sh test
# Nightly
nightly:
name: nightly
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- name: Install Rust
run: rustup update $nightly && rustup default $nightly
- name: Install cargo-hack
uses: taiki-e/install-action@cargo-hack
- name: Test
run: ci/test-stable.sh test
panic-abort:
name: panic=abort tests
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Install Rust
run: rustup update $nightly && rustup default $nightly
- name: Run tests with -Cpanic=abort
run: ci/panic-abort.sh
run: . ci/test-stable.sh test
# Run tests on some extra platforms
cross:
name: cross
strategy:
matrix:
include:
- target: i686-unknown-linux-gnu
os: ubuntu-latest
- target: armv7-unknown-linux-gnueabihf
os: ubuntu-22.04-arm # TODO: update to 24.04 when https://github.com/rust-lang/rust/issues/135867 solved
- target: powerpc-unknown-linux-gnu
os: ubuntu-latest
- target: powerpc64-unknown-linux-gnu
os: ubuntu-latest
- target: wasm32-wasip1
os: ubuntu-latest
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v4
- name: Install Rust
run: rustup update stable
- uses: taiki-e/setup-cross-toolchain-action@v1
with:
target: ${{ matrix.target }}
- name: Test
run: cargo test --target ${{ matrix.target }}
# Build for no_std environment.
no-std:
target:
- i686-unknown-linux-gnu
- armv7-unknown-linux-gnueabihf
- powerpc-unknown-linux-gnu
- powerpc64-unknown-linux-gnu
- wasm32-unknown-unknown
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- name: Install Rust
run: rustup update stable
- name: Install cargo-hack
uses: taiki-e/install-action@cargo-hack
# thumbv6m-none-eabi supports atomic, but not atomic CAS.
# thumbv7m-none-eabi supports atomic CAS.
- run: rustup target add thumbv6m-none-eabi thumbv7m-none-eabi
# * --optional-deps is needed for serde feature
# * --no-dev-deps is needed to avoid https://github.com/rust-lang/cargo/issues/4866
- run: cargo hack build --target thumbv7m-none-eabi --feature-powerset --skip std,default --optional-deps --no-dev-deps
# A sound way to provide atomic CAS on platforms without native atomic CAS is system-dependent.
# portable-atomic provides major ways via cfgs and accepts user-defined implementations via critical-section feature.
- run: cargo hack build --target thumbv6m-none-eabi --feature-powerset --skip std,default --optional-deps --no-dev-deps --features extra-platforms,extra-platforms/critical-section
run: rustup update stable && rustup default stable
- name: cross build --target ${{ matrix.target }}
run: |
cargo install cross
cross build --target ${{ matrix.target }}
if: matrix.target != 'wasm32-unknown-unknown'
# WASM support
- name: cargo build --target ${{ matrix.target }}
run: |
rustup target add ${{ matrix.target }}
cargo build --target ${{ matrix.target }}
if: matrix.target == 'wasm32-unknown-unknown'
# Sanitizers
tsan:
name: tsan
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- name: Install Rust
run: rustup update $nightly && rustup default $nightly
- name: Install rust-src
run: rustup component add rust-src
- name: ASAN / TSAN
run: ci/tsan.sh
run: . ci/tsan.sh
miri:
name: miri
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Install Rust
run: rustup update $nightly && rustup default $nightly
- uses: actions/checkout@v2
- name: Miri
run: ci/miri.sh
@@ -174,7 +136,7 @@ jobs:
name: loom
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- name: Install Rust
run: rustup update $nightly && rustup default $nightly
- name: Loom tests
@@ -190,13 +152,12 @@ jobs:
- minrust
- cross
- tsan
- miri
- loom
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: actions/checkout@v2
- name: Install Rust
run: rustup update $nightly && rustup default $nightly
run: rustup update stable && rustup default stable
- name: Build documentation
run: cargo doc --no-deps --all-features
env:
-246
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@@ -1,249 +1,3 @@
# 1.11.0 (November 14th, 2025)
- Bump MSRV to 1.57 (#788)
### Fixed
- fix: `BytesMut` only reuse if src has remaining (#803)
- Specialize `BytesMut::put::<Bytes>` (#793)
- Reserve capacity in `BytesMut::put` (#794)
- Change `BytesMut::remaining_mut` to use `isize::MAX` instead of `usize::MAX` (#795)
### Internal changes
- Guarantee address in `slice()` for empty slices. (#780)
- Rename `Vtable::to_*` -> `Vtable::into_*` (#776)
- Fix latest clippy warnings (#787)
- Ignore `BytesMut::freeze` doctest on wasm (#790)
- Move `drop_fn` of `from_owner` into vtable (#801)
# 1.10.1 (March 5th, 2025)
### Fixed
- Fix memory leak when using `to_vec` with `Bytes::from_owner` (#773)
# 1.10.0 (February 3rd, 2025)
### Added
- Add feature to support platforms without atomic CAS (#467)
- `try_get_*` methods for `Buf` trait (#753)
- Implement `Buf::chunks_vectored` for `Take` (#617)
- Implement `Buf::chunks_vectored` for `VecDeque<u8>` (#708)
### Fixed
- Remove incorrect guarantee for `chunks_vectored` (#754)
- Ensure that tests pass under `panic=abort` (#749)
# 1.9.0 (November 27, 2024)
### Added
- Add `Bytes::from_owner` to enable externally-allocated memory (#742)
### Documented
- Fix typo in Buf::chunk() comment (#744)
### Internal changes
- Replace BufMut::put with BufMut::put_slice in Writer impl (#745)
- Rename hex_impl! to fmt_impl! and reuse it for fmt::Debug (#743)
# 1.8.0 (October 21, 2024)
- Guarantee address in `split_off`/`split_to` for empty slices (#740)
# 1.7.2 (September 17, 2024)
### Fixed
- Fix default impl of `Buf::{get_int, get_int_le}` (#732)
### Documented
- Fix double spaces in comments and doc comments (#731)
### Internal changes
- Ensure BytesMut::advance reduces capacity (#728)
# 1.7.1 (August 1, 2024)
This release reverts the following change due to a regression:
- Reuse capacity when possible in `<BytesMut as Buf>::advance` impl (#698)
The revert can be found at #726.
# 1.7.0 (July 31, 2024)
### Added
- Add conversion from `Bytes` to `BytesMut` (#695, #710)
- Add reclaim method without additional allocation (#686)
### Documented
- Clarify how `BytesMut::zeroed` works (#714)
- Clarify the behavior of `Buf::chunk` (#717)
### Changed
- Change length condition of `BytesMut::truncate`
- Reuse capacity when possible in `<BytesMut as Buf>::advance` impl (#698)
- Improve `must_use` suggestion of `BytesMut::split` (#699)
### Internal changes
- Use `ManuallyDrop` instead of `mem::forget` (#678)
- Don't set `len` in `BytesMut::reserve` (#682)
- Optimize `Bytes::copy_to_bytes` (#688)
- Refactor `BytesMut::truncate` (#694)
- Refactor `BytesMut::resize` (#696)
- Reorder assertion in `Bytes::split_to`, `Bytes::split_off` (#689, #693)
- Use `offset_from` in more places (#705)
- Correct the wrong usage of `IntoIter` (#707)
# 1.6.1 (July 13, 2024)
This release fixes a bug where `Bytes::is_unique` returns incorrect values when
the `Bytes` originates from a shared `BytesMut`. (#718)
# 1.6.0 (March 22, 2024)
### Added
- Add `Bytes::is_unique` (#643)
### Documented
- Fix changelog typo (#628)
- Fix some spelling mistakes (#633)
- Typo fix (#637)
- Fix broken links (#639)
- Add security policy (#649)
### Internal changes
- Move comment to correct constant (#629)
- Various cleanup (#635)
- Simplify `UninitSlice::as_uninit_slice_mut()` logic (#644)
- Use `self.` instead of `Self::` (#642)
- `BytesMut`: Assert alignment of `Shared` (#652)
- Remove unnecessary namespace qualifier (#660)
- Remove an unnecessary else branch (#662)
- Remove unreachable else branch (#661)
- make parameter mut in `From<Vec>` (#667)
- Restore commented tests (#665)
- Use `sub` instead of `offset` (#668)
- Calculate original capacity only if necessary (#666)
- `set_vec_pos` does not need a second parameter (#672)
- `get_vec_pos`: use `&self` instead of `&mut self` (#670)
- Refactor `split_at`/`split_to` (#663)
- Use `Iterator` from the prelude (#673)
- `copy_to_bytes`: Add panic section to docs (#676)
- Remove redundant reserve call (#674)
- Use `ManuallyDrop` instead of `mem::forget` (#675)
# 1.5.0 (September 7, 2023)
### Added
- Add `UninitSlice::{new,uninit}` (#598, #599)
- Implement `BufMut` for `&mut [MaybeUninit<u8>]` (#597)
### Changed
- Mark `BytesMut::extend_from_slice` as inline (#595)
# 1.4.0 (January 31, 2023)
### Added
- Make `IntoIter` constructor public (#581)
### Fixed
- Avoid large reallocations when freezing `BytesMut` (#592)
### Documented
- Document which functions require `std` (#591)
- Fix duplicate "the the" typos (#585)
# 1.3.0 (November 20, 2022)
### Added
- Rename and expose `BytesMut::spare_capacity_mut` (#572)
- Implement native-endian get and put functions for `Buf` and `BufMut` (#576)
### Fixed
- Don't have important data in unused capacity when calling reserve (#563)
### Documented
- `Bytes::new` etc should return `Self` not `Bytes` (#568)
# 1.2.1 (July 30, 2022)
### Fixed
- Fix unbounded memory growth when using `reserve` (#560)
# 1.2.0 (July 19, 2022)
### Added
- Add `BytesMut::zeroed` (#517)
- Implement `Extend<Bytes>` for `BytesMut` (#527)
- Add conversion from `BytesMut` to `Vec<u8>` (#543, #554)
- Add conversion from `Bytes` to `Vec<u8>` (#547)
- Add `UninitSlice::as_uninit_slice_mut()` (#548)
- Add const to `Bytes::{len,is_empty}` (#514)
### Changed
- Reuse vector in `BytesMut::reserve` (#539, #544)
### Fixed
- Make miri happy (#515, #523, #542, #545, #553)
- Make tsan happy (#541)
- Fix `remaining_mut()` on chain (#488)
- Fix amortized asymptotics of `BytesMut` (#555)
### Documented
- Redraw layout diagram with box drawing characters (#539)
- Clarify `BytesMut::unsplit` docs (#535)
# 1.1.0 (August 25, 2021)
### Added
- `BufMut::put_bytes(self, val, cnt)` (#487)
- Implement `From<Box<[u8]>>` for `Bytes` (#504)
### Changed
- Override `put_slice` for `&mut [u8]` (#483)
- Panic on integer overflow in `Chain::remaining` (#482)
- Add inline tags to `UninitSlice` methods (#443)
- Override `copy_to_bytes` for Chain and Take (#481)
- Keep capacity when unsplit on empty other buf (#502)
### Documented
- Clarify `BufMut` allocation guarantees (#501)
- Clarify `BufMut::put_int` behavior (#486)
- Clarify actions of `clear` and `truncate`. (#508)
# 1.0.1 (January 11, 2021)
### Changed
+8 -15
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@@ -2,21 +2,23 @@
name = "bytes"
# When releasing to crates.io:
# - Update html_root_url.
# - Update CHANGELOG.md.
# - Create "v1.x.y" git tag.
version = "1.11.0"
edition = "2021"
rust-version = "1.57"
# - Update doc URL.
# - Create "v1.0.x" git tag.
version = "1.0.1"
license = "MIT"
authors = [
"Carl Lerche <[email protected]>",
"Sean McArthur <[email protected]>",
]
description = "Types and traits for working with bytes"
documentation = "https://docs.rs/bytes/1.0.1/bytes/"
repository = "https://github.com/tokio-rs/bytes"
readme = "README.md"
keywords = ["buffers", "zero-copy", "io"]
categories = ["network-programming", "data-structures"]
edition = "2018"
[features]
default = ["std"]
@@ -24,22 +26,13 @@ std = []
[dependencies]
serde = { version = "1.0.60", optional = true, default-features = false, features = ["alloc"] }
# Use portable-atomic crate to support platforms without atomic CAS.
# See "no_std support" section in readme for more information.
#
# Enable require-cas feature to provide a better error message if the end user forgets to use the cfg or feature.
extra-platforms = { package = "portable-atomic", version = "1.3", optional = true, default-features = false, features = ["require-cas"] }
tracing = { version = "0.1.26", default-features = false }
[dev-dependencies]
serde_test = "1.0"
[target.'cfg(loom)'.dev-dependencies]
loom = "0.7"
loom = "0.5"
[package.metadata.docs.rs]
rustdoc-args = ["--cfg", "docsrs"]
[lints.rust]
unexpected_cfgs = { level = "warn", check-cfg = [
'cfg(loom)',
] }
-26
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@@ -27,21 +27,6 @@ Next, add this to your crate:
use bytes::{Bytes, BytesMut, Buf, BufMut};
```
## no_std support
To use `bytes` with no_std environment, disable the (enabled by default) `std` feature.
```toml
[dependencies]
bytes = { version = "1", default-features = false }
```
To use `bytes` with no_std environment without atomic CAS, such as thumbv6m, you also need to enable
the `extra-platforms` feature. See the [documentation for the `portable-atomic`
crate](https://docs.rs/portable-atomic) for more information.
The MSRV when `extra-platforms` feature is enabled depends on the MSRV of `portable-atomic`.
## Serde support
Serde support is optional and disabled by default. To enable use the feature `serde`.
@@ -51,17 +36,6 @@ Serde support is optional and disabled by default. To enable use the feature `se
bytes = { version = "1", features = ["serde"] }
```
The MSRV when `serde` feature is enabled depends on the MSRV of `serde`.
## Building documentation
When building the `bytes` documentation the `docsrs` option should be used, otherwise
feature gates will not be shown. This requires a nightly toolchain:
```
RUSTDOCFLAGS="--cfg docsrs" cargo +nightly doc
```
## License
This project is licensed under the [MIT license](LICENSE).
-9
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@@ -1,9 +0,0 @@
# Security Policy
Bytes is part of the Tokio project and uses the same security policy as [Tokio][tokio-security].
## Report a security issue
The process for reporting an issue is the same as for [Tokio][tokio-security]. This includes private reporting via security@tokio.rs.
[tokio-security]: https://github.com/tokio-rs/tokio/security/policy
+1 -1
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@@ -46,7 +46,7 @@ impl TestBuf {
}
impl Buf for TestBuf {
fn remaining(&self) -> usize {
self.buf.len() - self.pos
return self.buf.len() - self.pos;
}
fn advance(&mut self, cnt: usize) {
self.pos += cnt;
+3 -4
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@@ -47,7 +47,7 @@ fn clone_static(b: &mut Bencher) {
b.iter(|| {
for _ in 0..1024 {
test::black_box(test::black_box(&bytes).clone());
test::black_box(&bytes.clone());
}
})
}
@@ -58,7 +58,7 @@ fn clone_shared(b: &mut Bencher) {
b.iter(|| {
for _ in 0..1024 {
test::black_box(test::black_box(&bytes).clone());
test::black_box(&bytes.clone());
}
})
}
@@ -70,7 +70,7 @@ fn clone_arc_vec(b: &mut Bencher) {
b.iter(|| {
for _ in 0..1024 {
test::black_box(test::black_box(&bytes).clone());
test::black_box(&bytes.clone());
}
})
}
@@ -88,7 +88,6 @@ fn from_long_slice(b: &mut Bencher) {
#[bench]
fn slice_empty(b: &mut Bencher) {
b.iter(|| {
// `clone` is to convert to ARC
let b = Bytes::from(vec![17; 1024]).clone();
for i in 0..1000 {
test::black_box(b.slice(i % 100..i % 100));
+4 -3
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@@ -1,10 +1,11 @@
#!/bin/bash
set -e
MIRI_NIGHTLY=nightly-$(curl -s https://rust-lang.github.io/rustup-components-history/x86_64-unknown-linux-gnu/miri)
echo "Installing latest nightly with Miri: $MIRI_NIGHTLY"
rustup set profile minimal
rustup default "$MIRI_NIGHTLY"
rustup component add miri
cargo miri setup
export MIRIFLAGS="-Zmiri-strict-provenance"
cargo miri test
cargo miri test --target mips64-unknown-linux-gnuabi64
-4
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@@ -1,4 +0,0 @@
#!/bin/bash
set -ex
RUSTFLAGS="$RUSTFLAGS -Cpanic=abort -Zpanic-abort-tests" cargo test --all-features --test '*'
Executable → Regular
+7 -5
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@@ -4,6 +4,9 @@ set -ex
cmd="${1:-test}"
# Install cargo-hack for feature flag test
cargo install cargo-hack
# Run with each feature
# * --each-feature includes both default/no-default features
# * --optional-deps is needed for serde feature
@@ -11,15 +14,14 @@ cargo hack "${cmd}" --each-feature --optional-deps
# Run with all features
cargo "${cmd}" --all-features
cargo doc --no-deps --all-features
if [[ "${RUST_VERSION}" == "nightly"* ]]; then
# Check benchmarks
cargo check --benches
# Check minimal versions
# Remove dev-dependencies from Cargo.toml to prevent the next `cargo update`
# from determining minimal versions based on dev-dependencies.
cargo hack --remove-dev-deps --workspace
# Update Cargo.lock to minimal version dependencies.
cargo update -Z minimal-versions
cargo clean
cargo update -Zminimal-versions
cargo check --all-features
fi
Executable → Regular
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-1
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@@ -1 +0,0 @@
msrv = "1.57"
+78 -1966
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File diff suppressed because it is too large Load Diff
+74 -655
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File diff suppressed because it is too large Load Diff
+8 -5
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@@ -1,5 +1,5 @@
use crate::buf::{IntoIter, UninitSlice};
use crate::{Buf, BufMut};
use crate::{Buf, BufMut, Bytes};
#[cfg(feature = "std")]
use std::io::IoSlice;
@@ -25,7 +25,9 @@ use std::io::IoSlice;
/// assert_eq!(full[..], b"hello world"[..]);
/// ```
///
/// [`Buf::chain`]: Buf::chain
/// [`Buf::chain`]: trait.Buf.html#method.chain
/// [`Buf`]: trait.Buf.html
/// [`BufMut`]: trait.BufMut.html
#[derive(Debug)]
pub struct Chain<T, U> {
a: T,
@@ -133,7 +135,7 @@ where
U: Buf,
{
fn remaining(&self) -> usize {
self.a.remaining().saturating_add(self.b.remaining())
self.a.remaining().checked_add(self.b.remaining()).unwrap()
}
fn chunk(&self) -> &[u8] {
@@ -169,7 +171,7 @@ where
n
}
fn copy_to_bytes(&mut self, len: usize) -> crate::Bytes {
fn copy_to_bytes(&mut self, len: usize) -> Bytes {
let a_rem = self.a.remaining();
if a_rem >= len {
self.a.copy_to_bytes(len)
@@ -196,7 +198,8 @@ where
fn remaining_mut(&self) -> usize {
self.a
.remaining_mut()
.saturating_add(self.b.remaining_mut())
.checked_add(self.b.remaining_mut())
.unwrap()
}
fn chunk_mut(&mut self) -> &mut UninitSlice {
+6 -1
View File
@@ -2,6 +2,8 @@ use crate::Buf;
/// Iterator over the bytes contained by the buffer.
///
/// This struct is created by the [`iter`] method on [`Buf`].
///
/// # Examples
///
/// Basic usage:
@@ -17,6 +19,9 @@ use crate::Buf;
/// assert_eq!(iter.next(), Some(b'c'));
/// assert_eq!(iter.next(), None);
/// ```
///
/// [`iter`]: trait.Buf.html#method.iter
/// [`Buf`]: trait.Buf.html
#[derive(Debug)]
pub struct IntoIter<T> {
inner: T,
@@ -38,7 +43,7 @@ impl<T> IntoIter<T> {
/// assert_eq!(iter.next(), Some(b'c'));
/// assert_eq!(iter.next(), None);
/// ```
pub fn new(inner: T) -> IntoIter<T> {
pub(crate) fn new(inner: T) -> IntoIter<T> {
IntoIter { inner }
}
+2
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@@ -13,6 +13,8 @@
//! See [`Buf`] and [`BufMut`] for more details.
//!
//! [rope]: https://en.wikipedia.org/wiki/Rope_(data_structure)
//! [`Buf`]: trait.Buf.html
//! [`BufMut`]: trait.BufMut.html
mod buf_impl;
mod buf_mut;
+1 -1
View File
@@ -5,7 +5,7 @@ use std::{cmp, io};
/// A `Buf` adapter which implements `io::Read` for the inner value.
///
/// This struct is generally created by calling `reader()` on `Buf`. See
/// documentation of [`reader()`](Buf::reader) for more
/// documentation of [`reader()`](trait.Buf.html#method.reader) for more
/// details.
#[derive(Debug)]
pub struct Reader<B> {
+3 -35
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@@ -1,14 +1,11 @@
use crate::Buf;
use crate::{Buf, Bytes};
use core::cmp;
#[cfg(feature = "std")]
use std::io::IoSlice;
/// A `Buf` adapter which limits the bytes read from an underlying buffer.
///
/// This struct is generally created by calling `take()` on `Buf`. See
/// documentation of [`take()`](Buf::take) for more details.
/// documentation of [`take()`](trait.Buf.html#method.take) for more details.
#[derive(Debug)]
pub struct Take<T> {
inner: T,
@@ -148,40 +145,11 @@ impl<T: Buf> Buf for Take<T> {
self.limit -= cnt;
}
fn copy_to_bytes(&mut self, len: usize) -> crate::Bytes {
fn copy_to_bytes(&mut self, len: usize) -> Bytes {
assert!(len <= self.remaining(), "`len` greater than remaining");
let r = self.inner.copy_to_bytes(len);
self.limit -= len;
r
}
#[cfg(feature = "std")]
fn chunks_vectored<'a>(&'a self, dst: &mut [IoSlice<'a>]) -> usize {
if self.limit == 0 {
return 0;
}
const LEN: usize = 16;
let mut slices: [IoSlice<'a>; LEN] = [IoSlice::new(&[]); LEN];
let cnt = self
.inner
.chunks_vectored(&mut slices[..dst.len().min(LEN)]);
let mut limit = self.limit;
for (i, (dst, slice)) in dst[..cnt].iter_mut().zip(slices.iter()).enumerate() {
if let Some(buf) = slice.get(..limit) {
// SAFETY: We could do this safely with `IoSlice::advance` if we had a larger MSRV.
let buf = unsafe { std::mem::transmute::<&[u8], &'a [u8]>(buf) };
*dst = IoSlice::new(buf);
return i + 1;
} else {
// SAFETY: We could do this safely with `IoSlice::advance` if we had a larger MSRV.
let buf = unsafe { std::mem::transmute::<&[u8], &'a [u8]>(slice) };
*dst = IoSlice::new(buf);
limit -= slice.len();
}
}
cnt
}
}
+6 -80
View File
@@ -22,44 +22,6 @@ use core::ops::{
pub struct UninitSlice([MaybeUninit<u8>]);
impl UninitSlice {
/// Creates a `&mut UninitSlice` wrapping a slice of initialised memory.
///
/// # Examples
///
/// ```
/// use bytes::buf::UninitSlice;
///
/// let mut buffer = [0u8; 64];
/// let slice = UninitSlice::new(&mut buffer[..]);
/// ```
#[inline]
pub fn new(slice: &mut [u8]) -> &mut UninitSlice {
unsafe { &mut *(slice as *mut [u8] as *mut [MaybeUninit<u8>] as *mut UninitSlice) }
}
/// Creates a `&mut UninitSlice` wrapping a slice of uninitialised memory.
///
/// # Examples
///
/// ```
/// use bytes::buf::UninitSlice;
/// use core::mem::MaybeUninit;
///
/// let mut buffer = [MaybeUninit::uninit(); 64];
/// let slice = UninitSlice::uninit(&mut buffer[..]);
///
/// let mut vec = Vec::with_capacity(1024);
/// let spare: &mut UninitSlice = vec.spare_capacity_mut().into();
/// ```
#[inline]
pub fn uninit(slice: &mut [MaybeUninit<u8>]) -> &mut UninitSlice {
unsafe { &mut *(slice as *mut [MaybeUninit<u8>] as *mut UninitSlice) }
}
fn uninit_ref(slice: &[MaybeUninit<u8>]) -> &UninitSlice {
unsafe { &*(slice as *const [MaybeUninit<u8>] as *const UninitSlice) }
}
/// Create a `&mut UninitSlice` from a pointer and a length.
///
/// # Safety
@@ -82,7 +44,7 @@ impl UninitSlice {
pub unsafe fn from_raw_parts_mut<'a>(ptr: *mut u8, len: usize) -> &'a mut UninitSlice {
let maybe_init: &mut [MaybeUninit<u8>] =
core::slice::from_raw_parts_mut(ptr as *mut _, len);
Self::uninit(maybe_init)
&mut *(maybe_init as *mut [MaybeUninit<u8>] as *mut UninitSlice)
}
/// Write a single byte at the specified offset.
@@ -110,7 +72,7 @@ impl UninitSlice {
unsafe { self[index..].as_mut_ptr().write(byte) }
}
/// Copies bytes from `src` into `self`.
/// Copies bytes from `src` into `self`.
///
/// The length of `src` must be the same as `self`.
///
@@ -162,32 +124,6 @@ impl UninitSlice {
self.0.as_mut_ptr() as *mut _
}
/// Return a `&mut [MaybeUninit<u8>]` to this slice's buffer.
///
/// # Safety
///
/// The caller **must not** read from the referenced memory and **must not** write
/// **uninitialized** bytes to the slice either. This is because `BufMut` implementation
/// that created the `UninitSlice` knows which parts are initialized. Writing uninitialized
/// bytes to the slice may cause the `BufMut` to read those bytes and trigger undefined
/// behavior.
///
/// # Examples
///
/// ```
/// use bytes::BufMut;
///
/// let mut data = [0, 1, 2];
/// let mut slice = &mut data[..];
/// unsafe {
/// let uninit_slice = BufMut::chunk_mut(&mut slice).as_uninit_slice_mut();
/// };
/// ```
#[inline]
pub unsafe fn as_uninit_slice_mut(&mut self) -> &mut [MaybeUninit<u8>] {
&mut self.0
}
/// Returns the number of bytes in the slice.
///
/// # Examples
@@ -213,18 +149,6 @@ impl fmt::Debug for UninitSlice {
}
}
impl<'a> From<&'a mut [u8]> for &'a mut UninitSlice {
fn from(slice: &'a mut [u8]) -> Self {
UninitSlice::new(slice)
}
}
impl<'a> From<&'a mut [MaybeUninit<u8>]> for &'a mut UninitSlice {
fn from(slice: &'a mut [MaybeUninit<u8>]) -> Self {
UninitSlice::uninit(slice)
}
}
macro_rules! impl_index {
($($t:ty),*) => {
$(
@@ -233,14 +157,16 @@ macro_rules! impl_index {
#[inline]
fn index(&self, index: $t) -> &UninitSlice {
UninitSlice::uninit_ref(&self.0[index])
let maybe_uninit: &[MaybeUninit<u8>] = &self.0[index];
unsafe { &*(maybe_uninit as *const [MaybeUninit<u8>] as *const UninitSlice) }
}
}
impl IndexMut<$t> for UninitSlice {
#[inline]
fn index_mut(&mut self, index: $t) -> &mut UninitSlice {
UninitSlice::uninit(&mut self.0[index])
let maybe_uninit: &mut [MaybeUninit<u8>] = &mut self.0[index];
unsafe { &mut *(maybe_uninit as *mut [MaybeUninit<u8>] as *mut UninitSlice) }
}
}
)*
-18
View File
@@ -1,6 +1,4 @@
use alloc::collections::VecDeque;
#[cfg(feature = "std")]
use std::io;
use super::Buf;
@@ -18,22 +16,6 @@ impl Buf for VecDeque<u8> {
}
}
#[cfg(feature = "std")]
fn chunks_vectored<'a>(&'a self, dst: &mut [io::IoSlice<'a>]) -> usize {
if self.is_empty() || dst.is_empty() {
return 0;
}
let (s1, s2) = self.as_slices();
dst[0] = io::IoSlice::new(s1);
if s2.is_empty() || dst.len() == 1 {
return 1;
}
dst[1] = io::IoSlice::new(s2);
2
}
fn advance(&mut self, cnt: usize) {
self.drain(..cnt);
}
+2 -2
View File
@@ -5,7 +5,7 @@ use std::{cmp, io};
/// A `BufMut` adapter which implements `io::Write` for the inner value.
///
/// This struct is generally created by calling `writer()` on `BufMut`. See
/// documentation of [`writer()`](BufMut::writer) for more
/// documentation of [`writer()`](trait.BufMut.html#method.writer) for more
/// details.
#[derive(Debug)]
pub struct Writer<B> {
@@ -78,7 +78,7 @@ impl<B: BufMut + Sized> io::Write for Writer<B> {
fn write(&mut self, src: &[u8]) -> io::Result<usize> {
let n = cmp::min(self.buf.remaining_mut(), src.len());
self.buf.put_slice(&src[..n]);
self.buf.put(&src[0..n]);
Ok(n)
}
+100 -624
View File
File diff suppressed because it is too large Load Diff
+205 -559
View File
File diff suppressed because it is too large Load Diff
+12 -3
View File
@@ -25,7 +25,7 @@ impl Debug for BytesRef<'_> {
} else if b == b'\0' {
write!(f, "\\0")?;
// ASCII printable
} else if (0x20..0x7f).contains(&b) {
} else if b >= 0x20 && b < 0x7f {
write!(f, "{}", b as char)?;
} else {
write!(f, "\\x{:02x}", b)?;
@@ -36,5 +36,14 @@ impl Debug for BytesRef<'_> {
}
}
fmt_impl!(Debug, Bytes);
fmt_impl!(Debug, BytesMut);
impl Debug for Bytes {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
Debug::fmt(&BytesRef(&self.as_ref()), f)
}
}
impl Debug for BytesMut {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
Debug::fmt(&BytesRef(&self.as_ref()), f)
}
}
+14 -4
View File
@@ -21,7 +21,17 @@ impl UpperHex for BytesRef<'_> {
}
}
fmt_impl!(LowerHex, Bytes);
fmt_impl!(LowerHex, BytesMut);
fmt_impl!(UpperHex, Bytes);
fmt_impl!(UpperHex, BytesMut);
macro_rules! hex_impl {
($tr:ident, $ty:ty) => {
impl $tr for $ty {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
$tr::fmt(&BytesRef(self.as_ref()), f)
}
}
};
}
hex_impl!(LowerHex, Bytes);
hex_impl!(LowerHex, BytesMut);
hex_impl!(UpperHex, Bytes);
hex_impl!(UpperHex, BytesMut);
-10
View File
@@ -1,13 +1,3 @@
macro_rules! fmt_impl {
($tr:ident, $ty:ty) => {
impl $tr for $ty {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
$tr::fmt(&BytesRef(self.as_ref()), f)
}
}
};
}
mod debug;
mod hex;
+9 -74
View File
@@ -3,15 +3,18 @@
no_crate_inject,
attr(deny(warnings, rust_2018_idioms), allow(dead_code, unused_variables))
))]
#![doc(html_root_url = "https://docs.rs/bytes/1.0.1")]
#![no_std]
#![cfg_attr(docsrs, feature(doc_cfg))]
//! Provides abstractions for working with bytes.
//!
//! The `bytes` crate provides an efficient byte buffer structure
//! ([`Bytes`]) and traits for working with buffer
//! ([`Bytes`](struct.Bytes.html)) and traits for working with buffer
//! implementations ([`Buf`], [`BufMut`]).
//!
//! [`Buf`]: trait.Buf.html
//! [`BufMut`]: trait.BufMut.html
//!
//! # `Bytes`
//!
//! `Bytes` is an efficient container for storing and operating on contiguous
@@ -49,7 +52,9 @@
//! `a` and `b` will share the underlying buffer and maintain indices tracking
//! the view into the buffer represented by the handle.
//!
//! See the [struct docs](`Bytes`) for more details.
//! See the [struct docs] for more details.
//!
//! [struct docs]: struct.Bytes.html
//!
//! # `Buf`, `BufMut`
//!
@@ -65,7 +70,7 @@
//! ## Relation with `Read` and `Write`
//!
//! At first glance, it may seem that `Buf` and `BufMut` overlap in
//! functionality with [`std::io::Read`] and [`std::io::Write`]. However, they
//! functionality with `std::io::Read` and `std::io::Write`. However, they
//! serve different purposes. A buffer is the value that is provided as an
//! argument to `Read::read` and `Write::write`. `Read` and `Write` may then
//! perform a syscall, which has the potential of failing. Operations on `Buf`
@@ -110,73 +115,3 @@ fn abort() -> ! {
panic!("abort");
}
}
#[inline(always)]
#[cfg(feature = "std")]
fn saturating_sub_usize_u64(a: usize, b: u64) -> usize {
match usize::try_from(b) {
Ok(b) => a.saturating_sub(b),
Err(_) => 0,
}
}
#[inline(always)]
#[cfg(feature = "std")]
fn min_u64_usize(a: u64, b: usize) -> usize {
match usize::try_from(a) {
Ok(a) => usize::min(a, b),
Err(_) => b,
}
}
/// Error type for the `try_get_` methods of [`Buf`].
/// Indicates that there were not enough remaining
/// bytes in the buffer while attempting
/// to get a value from a [`Buf`] with one
/// of the `try_get_` methods.
#[derive(Debug, PartialEq, Eq)]
pub struct TryGetError {
/// The number of bytes necessary to get the value
pub requested: usize,
/// The number of bytes available in the buffer
pub available: usize,
}
impl core::fmt::Display for TryGetError {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> Result<(), core::fmt::Error> {
write!(
f,
"Not enough bytes remaining in buffer to read value (requested {} but only {} available)",
self.requested,
self.available
)
}
}
#[cfg(feature = "std")]
impl std::error::Error for TryGetError {}
#[cfg(feature = "std")]
impl From<TryGetError> for std::io::Error {
fn from(error: TryGetError) -> Self {
std::io::Error::new(std::io::ErrorKind::Other, error)
}
}
/// Panic with a nice error message.
#[cold]
fn panic_advance(error_info: &TryGetError) -> ! {
panic!(
"advance out of bounds: the len is {} but advancing by {}",
error_info.available, error_info.requested
);
}
#[cold]
fn panic_does_not_fit(size: usize, nbytes: usize) -> ! {
panic!(
"size too large: the integer type can fit {} bytes, but nbytes is {}",
size, nbytes
);
}
+2 -5
View File
@@ -1,10 +1,7 @@
#[cfg(not(all(test, loom)))]
pub(crate) mod sync {
pub(crate) mod atomic {
#[cfg(not(feature = "extra-platforms"))]
pub(crate) use core::sync::atomic::{AtomicPtr, AtomicUsize, Ordering};
#[cfg(feature = "extra-platforms")]
pub(crate) use extra_platforms::{AtomicPtr, AtomicUsize, Ordering};
pub(crate) use core::sync::atomic::{fence, AtomicPtr, AtomicUsize, Ordering};
pub(crate) trait AtomicMut<T> {
fn with_mut<F, R>(&mut self, f: F) -> R
@@ -26,7 +23,7 @@ pub(crate) mod sync {
#[cfg(all(test, loom))]
pub(crate) mod sync {
pub(crate) mod atomic {
pub(crate) use loom::sync::atomic::{AtomicPtr, AtomicUsize, Ordering};
pub(crate) use loom::sync::atomic::{fence, AtomicPtr, AtomicUsize, Ordering};
pub(crate) trait AtomicMut<T> {}
}
+69 -388
View File
@@ -1,413 +1,77 @@
#![warn(rust_2018_idioms)]
use ::bytes::{Buf, Bytes, BytesMut};
use core::{cmp, mem};
use std::collections::VecDeque;
use bytes::Buf;
#[cfg(feature = "std")]
use std::io::IoSlice;
// A random 64-byte ascii string, with the first 8 bytes altered to
// give valid representations of f32 and f64 (making them easier to compare)
// and negative signed numbers when interpreting as big endian
// (testing Sign Extension for `Buf::get_int' and `Buf::get_int_ne`).
const INPUT: &[u8] = b"\xffFqrjrDqPhvTc45vvq33f6bJrUtyHESuTeklWKgYd64xgzxJwvAkpYYnpNJyZSRn";
#[test]
fn test_fresh_cursor_vec() {
let mut buf = &b"hello"[..];
macro_rules! e {
($big_endian_val:expr, $little_endian_val:expr) => {
if cfg!(target_endian = "big") {
$big_endian_val
} else {
$little_endian_val
}
};
assert_eq!(buf.remaining(), 5);
assert_eq!(buf.chunk(), b"hello");
buf.advance(2);
assert_eq!(buf.remaining(), 3);
assert_eq!(buf.chunk(), b"llo");
buf.advance(3);
assert_eq!(buf.remaining(), 0);
assert_eq!(buf.chunk(), b"");
}
macro_rules! buf_tests {
($make_input:ident) => {
buf_tests!($make_input, true);
};
($make_input:ident, $checks_vectored_is_complete:expr) => {
use super::*;
#[test]
fn empty_state() {
let buf = $make_input(&[]);
assert_eq!(buf.remaining(), 0);
assert!(!buf.has_remaining());
assert!(buf.chunk().is_empty());
}
#[test]
fn fresh_state() {
let buf = $make_input(INPUT);
assert_eq!(buf.remaining(), 64);
assert!(buf.has_remaining());
let chunk = buf.chunk();
assert!(chunk.len() <= 64);
assert!(INPUT.starts_with(chunk));
}
#[test]
fn advance() {
let mut buf = $make_input(INPUT);
buf.advance(8);
assert_eq!(buf.remaining(), 64 - 8);
assert!(buf.has_remaining());
let chunk = buf.chunk();
assert!(chunk.len() <= 64 - 8);
assert!(INPUT[8..].starts_with(chunk));
}
#[test]
fn advance_to_end() {
let mut buf = $make_input(INPUT);
buf.advance(64);
assert_eq!(buf.remaining(), 0);
assert!(!buf.has_remaining());
let chunk = buf.chunk();
assert!(chunk.is_empty());
}
#[test]
#[should_panic]
fn advance_past_end() {
let mut buf = $make_input(INPUT);
buf.advance(65);
}
#[test]
#[cfg(feature = "std")]
fn chunks_vectored_empty() {
let buf = $make_input(&[]);
let mut bufs = [IoSlice::new(&[]); 16];
let n = buf.chunks_vectored(&mut bufs);
assert_eq!(n, 0);
assert!(bufs.iter().all(|buf| buf.is_empty()));
}
#[test]
#[cfg(feature = "std")]
fn chunks_vectored_is_complete() {
let buf = $make_input(INPUT);
let mut bufs = [IoSlice::new(&[]); 16];
let n = buf.chunks_vectored(&mut bufs);
assert!(n > 0);
assert!(n <= 16);
let bufs_concat = bufs[..n]
.iter()
.flat_map(|b| b.iter().copied())
.collect::<Vec<u8>>();
if $checks_vectored_is_complete {
assert_eq!(bufs_concat, INPUT);
} else {
// If this panics then `buf` implements `chunks_vectored`.
// Remove the `false` argument from `buf_tests!` for that type.
assert!(bufs_concat.len() < INPUT.len());
assert!(INPUT.starts_with(&bufs_concat));
}
for i in n..16 {
assert!(bufs[i].is_empty());
}
}
#[test]
fn copy_to_slice() {
let mut buf = $make_input(INPUT);
let mut chunk = [0u8; 8];
buf.copy_to_slice(&mut chunk);
assert_eq!(buf.remaining(), 64 - 8);
assert!(buf.has_remaining());
assert_eq!(chunk, INPUT[..8]);
let chunk = buf.chunk();
assert!(chunk.len() <= 64 - 8);
assert!(INPUT[8..].starts_with(chunk));
}
#[test]
fn copy_to_slice_big() {
let mut buf = $make_input(INPUT);
let mut chunk = [0u8; 56];
buf.copy_to_slice(&mut chunk);
assert_eq!(buf.remaining(), 64 - 56);
assert!(buf.has_remaining());
assert_eq!(chunk, INPUT[..56]);
let chunk = buf.chunk();
assert!(chunk.len() <= 64 - 56);
assert!(INPUT[56..].starts_with(chunk));
}
#[test]
fn copy_to_slice_to_end() {
let mut buf = $make_input(INPUT);
let mut chunk = [0u8; 64];
buf.copy_to_slice(&mut chunk);
assert_eq!(buf.remaining(), 0);
assert!(!buf.has_remaining());
assert_eq!(chunk, INPUT);
assert!(buf.chunk().is_empty());
}
#[test]
#[should_panic]
fn copy_to_slice_overflow() {
let mut buf = $make_input(INPUT);
let mut chunk = [0u8; 65];
buf.copy_to_slice(&mut chunk);
}
#[test]
fn copy_to_bytes() {
let mut buf = $make_input(INPUT);
let chunk = buf.copy_to_bytes(8);
assert_eq!(buf.remaining(), 64 - 8);
assert!(buf.has_remaining());
assert_eq!(chunk, INPUT[..8]);
let chunk = buf.chunk();
assert!(chunk.len() <= 64 - 8);
assert!(INPUT[8..].starts_with(chunk));
}
#[test]
fn copy_to_bytes_big() {
let mut buf = $make_input(INPUT);
let chunk = buf.copy_to_bytes(56);
assert_eq!(buf.remaining(), 64 - 56);
assert!(buf.has_remaining());
assert_eq!(chunk, INPUT[..56]);
let chunk = buf.chunk();
assert!(chunk.len() <= 64 - 56);
assert!(INPUT[56..].starts_with(chunk));
}
#[test]
fn copy_to_bytes_to_end() {
let mut buf = $make_input(INPUT);
let chunk = buf.copy_to_bytes(64);
assert_eq!(buf.remaining(), 0);
assert!(!buf.has_remaining());
assert_eq!(chunk, INPUT);
assert!(buf.chunk().is_empty());
}
#[test]
#[should_panic]
fn copy_to_bytes_overflow() {
let mut buf = $make_input(INPUT);
let _ = buf.copy_to_bytes(65);
}
buf_tests!(number $make_input, get_u8, get_u8_overflow, u8, get_u8, 0xff);
buf_tests!(number $make_input, get_i8, get_i8_overflow, i8, get_i8, 0xffu8 as i8);
buf_tests!(number $make_input, get_u16_be, get_u16_be_overflow, u16, get_u16, 0xff46);
buf_tests!(number $make_input, get_u16_le, get_u16_le_overflow, u16, get_u16_le, 0x46ff);
buf_tests!(number $make_input, get_u16_ne, get_u16_ne_overflow, u16, get_u16_ne, e!(0xff46, 0x46ff));
buf_tests!(number $make_input, get_i16_be, get_i16_be_overflow, i16, get_i16, 0xff46u16 as i16);
buf_tests!(number $make_input, get_i16_le, get_i16_le_overflow, i16, get_i16_le, 0x46ff);
buf_tests!(number $make_input, get_i16_ne, get_i16_ne_overflow, i16, get_i16_ne, e!(0xff46u16 as i16, 0x46ff));
buf_tests!(number $make_input, get_u32_be, get_u32_be_overflow, u32, get_u32, 0xff467172);
buf_tests!(number $make_input, get_u32_le, get_u32_le_overflow, u32, get_u32_le, 0x727146ff);
buf_tests!(number $make_input, get_u32_ne, get_u32_ne_overflow, u32, get_u32_ne, e!(0xff467172, 0x727146ff));
buf_tests!(number $make_input, get_i32_be, get_i32_be_overflow, i32, get_i32, 0xff467172u32 as i32);
buf_tests!(number $make_input, get_i32_le, get_i32_le_overflow, i32, get_i32_le, 0x727146ff);
buf_tests!(number $make_input, get_i32_ne, get_i32_ne_overflow, i32, get_i32_ne, e!(0xff467172u32 as i32, 0x727146ff));
buf_tests!(number $make_input, get_u64_be, get_u64_be_overflow, u64, get_u64, 0xff4671726a724471);
buf_tests!(number $make_input, get_u64_le, get_u64_le_overflow, u64, get_u64_le, 0x7144726a727146ff);
buf_tests!(number $make_input, get_u64_ne, get_u64_ne_overflow, u64, get_u64_ne, e!(0xff4671726a724471, 0x7144726a727146ff));
buf_tests!(number $make_input, get_i64_be, get_i64_be_overflow, i64, get_i64, 0xff4671726a724471u64 as i64);
buf_tests!(number $make_input, get_i64_le, get_i64_le_overflow, i64, get_i64_le, 0x7144726a727146ff);
buf_tests!(number $make_input, get_i64_ne, get_i64_ne_overflow, i64, get_i64_ne, e!(0xff4671726a724471u64 as i64, 0x7144726a727146ff));
buf_tests!(number $make_input, get_u128_be, get_u128_be_overflow, u128, get_u128, 0xff4671726a7244715068765463343576);
buf_tests!(number $make_input, get_u128_le, get_u128_le_overflow, u128, get_u128_le, 0x76353463547668507144726a727146ff);
buf_tests!(number $make_input, get_u128_ne, get_u128_ne_overflow, u128, get_u128_ne, e!(0xff4671726a7244715068765463343576, 0x76353463547668507144726a727146ff));
buf_tests!(number $make_input, get_i128_be, get_i128_be_overflow, i128, get_i128, 0xff4671726a7244715068765463343576u128 as i128);
buf_tests!(number $make_input, get_i128_le, get_i128_le_overflow, i128, get_i128_le, 0x76353463547668507144726a727146ff);
buf_tests!(number $make_input, get_i128_ne, get_i128_ne_overflow, i128, get_i128_ne, e!(0xff4671726a7244715068765463343576u128 as i128, 0x76353463547668507144726a727146ff));
buf_tests!(number $make_input, get_f32_be, get_f32_be_overflow, f32, get_f32, f32::from_bits(0xff467172));
buf_tests!(number $make_input, get_f32_le, get_f32_le_overflow, f32, get_f32_le, f32::from_bits(0x727146ff));
buf_tests!(number $make_input, get_f32_ne, get_f32_ne_overflow, f32, get_f32_ne, f32::from_bits(e!(0xff467172, 0x727146ff)));
buf_tests!(number $make_input, get_f64_be, get_f64_be_overflow, f64, get_f64, f64::from_bits(0xff4671726a724471));
buf_tests!(number $make_input, get_f64_le, get_f64_le_overflow, f64, get_f64_le, f64::from_bits(0x7144726a727146ff));
buf_tests!(number $make_input, get_f64_ne, get_f64_ne_overflow, f64, get_f64_ne, f64::from_bits(e!(0xff4671726a724471, 0x7144726a727146ff)));
buf_tests!(var_number $make_input, get_uint_be, get_uint_be_overflow, u64, get_uint, 3, 0xff4671);
buf_tests!(var_number $make_input, get_uint_le, get_uint_le_overflow, u64, get_uint_le, 3, 0x7146ff);
buf_tests!(var_number $make_input, get_uint_ne, get_uint_ne_overflow, u64, get_uint_ne, 3, e!(0xff4671, 0x7146ff));
buf_tests!(var_number $make_input, get_int_be, get_int_be_overflow, i64, get_int, 3, 0xffffffffffff4671u64 as i64);
buf_tests!(var_number $make_input, get_int_le, get_int_le_overflow, i64, get_int_le, 3, 0x7146ff);
buf_tests!(var_number $make_input, get_int_ne, get_int_ne_overflow, i64, get_int_ne, 3, e!(0xffffffffffff4671u64 as i64, 0x7146ff));
};
(number $make_input:ident, $ok_name:ident, $panic_name:ident, $number:ty, $method:ident, $value:expr) => {
#[test]
fn $ok_name() {
let mut buf = $make_input(INPUT);
let value = buf.$method();
assert_eq!(buf.remaining(), 64 - mem::size_of::<$number>());
assert!(buf.has_remaining());
assert_eq!(value, $value);
}
#[test]
#[should_panic]
fn $panic_name() {
let mut buf = $make_input(&[]);
let _ = buf.$method();
}
};
(var_number $make_input:ident, $ok_name:ident, $panic_name:ident, $number:ty, $method:ident, $len:expr, $value:expr) => {
#[test]
fn $ok_name() {
let mut buf = $make_input(INPUT);
let value = buf.$method($len);
assert_eq!(buf.remaining(), 64 - $len);
assert!(buf.has_remaining());
assert_eq!(value, $value);
}
#[test]
#[should_panic]
fn $panic_name() {
let mut buf = $make_input(&[]);
let _ = buf.$method($len);
}
};
#[test]
fn test_get_u8() {
let mut buf = &b"\x21zomg"[..];
assert_eq!(0x21, buf.get_u8());
}
mod u8_slice {
fn make_input(buf: &'static [u8]) -> &'static [u8] {
buf
}
buf_tests!(make_input);
#[test]
fn test_get_u16() {
let mut buf = &b"\x21\x54zomg"[..];
assert_eq!(0x2154, buf.get_u16());
let mut buf = &b"\x21\x54zomg"[..];
assert_eq!(0x5421, buf.get_u16_le());
}
mod bytes {
fn make_input(buf: &'static [u8]) -> impl Buf {
Bytes::from_static(buf)
}
buf_tests!(make_input);
}
mod bytes_mut {
fn make_input(buf: &'static [u8]) -> impl Buf {
BytesMut::from(buf)
}
buf_tests!(make_input);
}
mod vec_deque {
fn make_input(buf: &'static [u8]) -> impl Buf {
let mut deque = VecDeque::new();
if !buf.is_empty() {
// Construct |b|some bytes|a| `VecDeque`
let mid = buf.len() / 2;
let (a, b) = buf.split_at(mid);
deque.reserve_exact(buf.len() + 1);
let extra_space = deque.capacity() - b.len() - 1;
deque.resize(extra_space, 0);
deque.extend(a);
deque.drain(..extra_space);
deque.extend(b);
let (a, b) = deque.as_slices();
assert!(
!a.is_empty(),
"could not setup test - attempt to create discontiguous VecDeque failed"
);
assert!(
!b.is_empty(),
"could not setup test - attempt to create discontiguous VecDeque failed"
);
}
deque
}
buf_tests!(make_input, true);
#[test]
#[should_panic]
fn test_get_u16_buffer_underflow() {
let mut buf = &b"\x21"[..];
buf.get_u16();
}
#[cfg(feature = "std")]
mod cursor {
use std::io::Cursor;
#[test]
fn test_bufs_vec() {
let buf = &b"hello world"[..];
fn make_input(buf: &'static [u8]) -> impl Buf {
Cursor::new(buf)
}
let b1: &[u8] = &mut [];
let b2: &[u8] = &mut [];
buf_tests!(make_input);
let mut dst = [IoSlice::new(b1), IoSlice::new(b2)];
assert_eq!(1, buf.chunks_vectored(&mut dst[..]));
}
mod box_bytes {
fn make_input(buf: &'static [u8]) -> impl Buf {
Box::new(Bytes::from_static(buf))
}
#[test]
fn test_vec_deque() {
use std::collections::VecDeque;
buf_tests!(make_input);
let mut buffer: VecDeque<u8> = VecDeque::new();
buffer.extend(b"hello world");
assert_eq!(11, buffer.remaining());
assert_eq!(b"hello world", buffer.chunk());
buffer.advance(6);
assert_eq!(b"world", buffer.chunk());
buffer.extend(b" piece");
let mut out = [0; 11];
buffer.copy_to_slice(&mut out);
assert_eq!(b"world piece", &out[..]);
}
mod chain_u8_slice {
fn make_input(buf: &'static [u8]) -> impl Buf {
let (a, b) = buf.split_at(buf.len() / 2);
Buf::chain(a, b)
}
buf_tests!(make_input);
}
mod chain_small_big_u8_slice {
fn make_input(buf: &'static [u8]) -> impl Buf {
let mid = cmp::min(1, buf.len());
let (a, b) = buf.split_at(mid);
Buf::chain(a, b)
}
buf_tests!(make_input);
}
mod chain_limited_slices {
fn make_input(buf: &'static [u8]) -> impl Buf {
let buf3 = &buf[cmp::min(buf.len(), 3)..];
let a = Buf::take(buf3, 0);
let b = Buf::take(buf, 3);
let c = Buf::take(buf3, usize::MAX);
let d = buf;
Buf::take(Buf::chain(Buf::chain(a, b), Buf::chain(c, d)), buf.len())
}
buf_tests!(make_input, true);
}
#[allow(unused_allocation)] // This is intentional.
#[test]
fn test_deref_buf_forwards() {
struct Special;
@@ -437,3 +101,20 @@ fn test_deref_buf_forwards() {
assert_eq!((Box::new(Special) as Box<dyn Buf>).get_u8(), b'x');
assert_eq!(Box::new(Special).get_u8(), b'x');
}
#[test]
fn copy_to_bytes_less() {
let mut buf = &b"hello world"[..];
let bytes = buf.copy_to_bytes(5);
assert_eq!(bytes, &b"hello"[..]);
assert_eq!(buf, &b" world"[..])
}
#[test]
#[should_panic]
fn copy_to_bytes_overflow() {
let mut buf = &b"hello world"[..];
let _bytes = buf.copy_to_bytes(12);
}
+11 -163
View File
@@ -3,13 +3,13 @@
use bytes::buf::UninitSlice;
use bytes::{BufMut, BytesMut};
use core::fmt::Write;
use core::mem::MaybeUninit;
use core::usize;
#[test]
fn test_vec_as_mut_buf() {
let mut buf = Vec::with_capacity(64);
assert_eq!(buf.remaining_mut(), isize::MAX as usize);
assert_eq!(buf.remaining_mut(), usize::MAX);
assert!(buf.chunk_mut().len() >= 64);
@@ -17,7 +17,7 @@ fn test_vec_as_mut_buf() {
assert_eq!(&buf, b"zomg");
assert_eq!(buf.remaining_mut(), isize::MAX as usize - 4);
assert_eq!(buf.remaining_mut(), usize::MAX - 4);
assert_eq!(buf.capacity(), 64);
for _ in 0..16 {
@@ -27,14 +27,6 @@ fn test_vec_as_mut_buf() {
assert_eq!(buf.len(), 68);
}
#[test]
fn test_vec_put_bytes() {
let mut buf = Vec::new();
buf.push(17);
buf.put_bytes(19, 2);
assert_eq!([17, 19, 19], &buf[..]);
}
#[test]
fn test_put_u8() {
let mut buf = Vec::with_capacity(8);
@@ -54,35 +46,7 @@ fn test_put_u16() {
}
#[test]
fn test_put_int() {
let mut buf = Vec::with_capacity(8);
buf.put_int(0x1020304050607080, 3);
assert_eq!(b"\x60\x70\x80", &buf[..]);
}
#[test]
#[should_panic]
fn test_put_int_nbytes_overflow() {
let mut buf = Vec::with_capacity(8);
buf.put_int(0x1020304050607080, 9);
}
#[test]
fn test_put_int_le() {
let mut buf = Vec::with_capacity(8);
buf.put_int_le(0x1020304050607080, 3);
assert_eq!(b"\x80\x70\x60", &buf[..]);
}
#[test]
#[should_panic]
fn test_put_int_le_nbytes_overflow() {
let mut buf = Vec::with_capacity(8);
buf.put_int_le(0x1020304050607080, 9);
}
#[test]
#[should_panic(expected = "advance out of bounds: the len is 8 but advancing by 12")]
#[should_panic(expected = "cannot advance")]
fn test_vec_advance_mut() {
// Verify fix for #354
let mut buf = Vec::with_capacity(8);
@@ -101,123 +65,16 @@ fn test_clone() {
assert!(buf != buf2);
}
fn do_test_slice_small<T: ?Sized>(make: impl Fn(&mut [u8]) -> &mut T)
where
for<'r> &'r mut T: BufMut,
{
let mut buf = [b'X'; 8];
let mut slice = make(&mut buf[..]);
slice.put_bytes(b'A', 2);
slice.put_u8(b'B');
slice.put_slice(b"BCC");
assert_eq!(2, slice.remaining_mut());
assert_eq!(b"AABBCCXX", &buf[..]);
let mut slice = make(&mut buf[..]);
slice.put_u32(0x61626364);
assert_eq!(4, slice.remaining_mut());
assert_eq!(b"abcdCCXX", &buf[..]);
let mut slice = make(&mut buf[..]);
slice.put_u32_le(0x30313233);
assert_eq!(4, slice.remaining_mut());
assert_eq!(b"3210CCXX", &buf[..]);
}
fn do_test_slice_large<T: ?Sized>(make: impl Fn(&mut [u8]) -> &mut T)
where
for<'r> &'r mut T: BufMut,
{
const LEN: usize = 100;
const FILL: [u8; LEN] = [b'Y'; LEN];
let test = |fill: &dyn Fn(&mut &mut T, usize)| {
for buf_len in 0..LEN {
let mut buf = [b'X'; LEN];
for fill_len in 0..=buf_len {
let mut slice = make(&mut buf[..buf_len]);
fill(&mut slice, fill_len);
assert_eq!(buf_len - fill_len, slice.remaining_mut());
let (head, tail) = buf.split_at(fill_len);
assert_eq!(&FILL[..fill_len], head);
assert!(tail.iter().all(|b| *b == b'X'));
}
}
};
test(&|slice, fill_len| slice.put_slice(&FILL[..fill_len]));
test(&|slice, fill_len| slice.put_bytes(FILL[0], fill_len));
}
fn do_test_slice_put_slice_panics<T: ?Sized>(make: impl Fn(&mut [u8]) -> &mut T)
where
for<'r> &'r mut T: BufMut,
{
let mut buf = [b'X'; 4];
let mut slice = make(&mut buf[..]);
slice.put_slice(b"12345");
}
fn do_test_slice_put_bytes_panics<T: ?Sized>(make: impl Fn(&mut [u8]) -> &mut T)
where
for<'r> &'r mut T: BufMut,
{
let mut buf = [b'X'; 4];
let mut slice = make(&mut buf[..]);
slice.put_bytes(b'1', 5);
}
#[test]
fn test_slice_buf_mut_small() {
do_test_slice_small(|x| x);
fn test_mut_slice() {
let mut v = vec![0, 0, 0, 0];
let mut s = &mut v[..];
s.put_u32(42);
assert_eq!(s.len(), 0);
assert_eq!(&v, &[0, 0, 0, 42]);
}
#[test]
fn test_slice_buf_mut_large() {
do_test_slice_large(|x| x);
}
#[test]
#[should_panic]
fn test_slice_buf_mut_put_slice_overflow() {
do_test_slice_put_slice_panics(|x| x);
}
#[test]
#[should_panic]
fn test_slice_buf_mut_put_bytes_overflow() {
do_test_slice_put_bytes_panics(|x| x);
}
fn make_maybe_uninit_slice(slice: &mut [u8]) -> &mut [MaybeUninit<u8>] {
// SAFETY: [u8] has the same layout as [MaybeUninit<u8>].
unsafe { core::mem::transmute(slice) }
}
#[test]
fn test_maybe_uninit_buf_mut_small() {
do_test_slice_small(make_maybe_uninit_slice);
}
#[test]
fn test_maybe_uninit_buf_mut_large() {
do_test_slice_large(make_maybe_uninit_slice);
}
#[test]
#[should_panic]
fn test_maybe_uninit_buf_mut_put_slice_overflow() {
do_test_slice_put_slice_panics(make_maybe_uninit_slice);
}
#[test]
#[should_panic]
fn test_maybe_uninit_buf_mut_put_bytes_overflow() {
do_test_slice_put_bytes_panics(make_maybe_uninit_slice);
}
#[allow(unused_allocation)] // This is intentional.
#[test]
fn test_deref_bufmut_forwards() {
struct Special;
@@ -273,12 +130,3 @@ fn copy_from_slice_panics_if_different_length_2() {
let slice = unsafe { UninitSlice::from_raw_parts_mut(data.as_mut_ptr(), 3) };
slice.copy_from_slice(b"abcd");
}
/// Test if with zero capacity BytesMut does not infinitely recurse in put from Buf
#[test]
fn test_bytes_mut_reuse() {
let mut buf = BytesMut::new();
buf.put(&[] as &[u8]);
let mut buf = BytesMut::new();
buf.put(&[1u8, 2, 3] as &[u8]);
}
+100 -846
View File
File diff suppressed because it is too large Load Diff
+3 -81
View File
@@ -6,7 +6,7 @@
use std::alloc::{GlobalAlloc, Layout, System};
use std::ptr;
use bytes::{Bytes, BytesMut};
use bytes::Bytes;
#[global_allocator]
static ODD: Odd = Odd;
@@ -24,7 +24,8 @@ unsafe impl GlobalAlloc for Odd {
};
let ptr = System.alloc(new_layout);
if !ptr.is_null() {
ptr.offset(1)
let ptr = ptr.offset(1);
ptr
} else {
ptr
}
@@ -66,82 +67,3 @@ fn test_bytes_clone_drop() {
let b1 = Bytes::from(vec);
let _b2 = b1.clone();
}
#[test]
fn test_bytes_into_vec() {
let vec = vec![33u8; 1024];
// Test cases where kind == KIND_VEC
let b1 = Bytes::from(vec.clone());
assert_eq!(Vec::from(b1), vec);
// Test cases where kind == KIND_ARC, ref_cnt == 1
let b1 = Bytes::from(vec.clone());
drop(b1.clone());
assert_eq!(Vec::from(b1), vec);
// Test cases where kind == KIND_ARC, ref_cnt == 2
let b1 = Bytes::from(vec.clone());
let b2 = b1.clone();
assert_eq!(Vec::from(b1), vec);
// Test cases where vtable = SHARED_VTABLE, kind == KIND_ARC, ref_cnt == 1
assert_eq!(Vec::from(b2), vec);
// Test cases where offset != 0
let mut b1 = Bytes::from(vec.clone());
let b2 = b1.split_off(20);
assert_eq!(Vec::from(b2), vec[20..]);
assert_eq!(Vec::from(b1), vec[..20]);
}
#[test]
fn test_bytesmut_from_bytes_vec() {
let vec = vec![33u8; 1024];
// Test case where kind == KIND_VEC
let b1 = Bytes::from(vec.clone());
let b1m = BytesMut::from(b1);
assert_eq!(b1m, vec);
}
#[test]
fn test_bytesmut_from_bytes_arc_1() {
let vec = vec![33u8; 1024];
// Test case where kind == KIND_ARC, ref_cnt == 1
let b1 = Bytes::from(vec.clone());
drop(b1.clone());
let b1m = BytesMut::from(b1);
assert_eq!(b1m, vec);
}
#[test]
fn test_bytesmut_from_bytes_arc_2() {
let vec = vec![33u8; 1024];
// Test case where kind == KIND_ARC, ref_cnt == 2
let b1 = Bytes::from(vec.clone());
let b2 = b1.clone();
let b1m = BytesMut::from(b1);
assert_eq!(b1m, vec);
// Test case where vtable = SHARED_VTABLE, kind == KIND_ARC, ref_cnt == 1
let b2m = BytesMut::from(b2);
assert_eq!(b2m, vec);
}
#[test]
fn test_bytesmut_from_bytes_arc_offset() {
let vec = vec![33u8; 1024];
// Test case where offset != 0
let mut b1 = Bytes::from(vec.clone());
let b2 = b1.split_off(20);
let b1m = BytesMut::from(b1);
let b2m = BytesMut::from(b2);
assert_eq!(b2m, vec[20..]);
assert_eq!(b1m, vec[..20]);
}
+39 -106
View File
@@ -1,90 +1,61 @@
#![cfg(not(miri))]
use std::alloc::{GlobalAlloc, Layout, System};
use std::ptr::null_mut;
use std::sync::atomic::{AtomicPtr, AtomicUsize, Ordering};
use std::{mem, ptr};
use bytes::{Buf, Bytes};
#[global_allocator]
static LEDGER: Ledger = Ledger::new();
static LEDGER: Ledger = Ledger;
const LEDGER_LENGTH: usize = 1024 * 1024;
struct Ledger;
struct Ledger {
alloc_table: [(AtomicPtr<u8>, AtomicUsize); LEDGER_LENGTH],
}
impl Ledger {
const fn new() -> Self {
const ELEM: (AtomicPtr<u8>, AtomicUsize) =
(AtomicPtr::new(null_mut()), AtomicUsize::new(0));
let alloc_table = [ELEM; LEDGER_LENGTH];
Self { alloc_table }
}
/// Iterate over our table until we find an open entry, then insert into said entry
fn insert(&self, ptr: *mut u8, size: usize) {
for (entry_ptr, entry_size) in self.alloc_table.iter() {
// SeqCst is good enough here, we don't care about perf, i just want to be correct!
if entry_ptr
.compare_exchange(null_mut(), ptr, Ordering::SeqCst, Ordering::SeqCst)
.is_ok()
{
entry_size.store(size, Ordering::SeqCst);
return;
}
}
panic!("Ledger ran out of space.");
}
fn remove(&self, ptr: *mut u8) -> usize {
for (entry_ptr, entry_size) in self.alloc_table.iter() {
// set the value to be something that will never try and be deallocated, so that we
// don't have any chance of a race condition
//
// dont worry, LEDGER_LENGTH is really long to compensate for us not reclaiming space
if entry_ptr
.compare_exchange(
ptr,
invalid_ptr(usize::MAX),
Ordering::SeqCst,
Ordering::SeqCst,
)
.is_ok()
{
return entry_size.load(Ordering::SeqCst);
}
}
panic!("Couldn't find a matching entry for {:x?}", ptr);
}
}
const USIZE_SIZE: usize = mem::size_of::<usize>();
unsafe impl GlobalAlloc for Ledger {
unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
let size = layout.size();
let ptr = System.alloc(layout);
self.insert(ptr, size);
ptr
if layout.align() == 1 && layout.size() > 0 {
// Allocate extra space to stash a record of
// how much space there was.
let orig_size = layout.size();
let size = orig_size + USIZE_SIZE;
let new_layout = match Layout::from_size_align(size, 1) {
Ok(layout) => layout,
Err(_err) => return ptr::null_mut(),
};
let ptr = System.alloc(new_layout);
if !ptr.is_null() {
(ptr as *mut usize).write(orig_size);
let ptr = ptr.offset(USIZE_SIZE as isize);
ptr
} else {
ptr
}
} else {
System.alloc(layout)
}
}
unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
let orig_size = self.remove(ptr);
if layout.align() == 1 && layout.size() > 0 {
let off_ptr = (ptr as *mut usize).offset(-1);
let orig_size = off_ptr.read();
if orig_size != layout.size() {
panic!(
"bad dealloc: alloc size was {}, dealloc size is {}",
orig_size,
layout.size()
);
}
if orig_size != layout.size() {
panic!(
"bad dealloc: alloc size was {}, dealloc size is {}",
orig_size,
layout.size()
);
let new_layout = match Layout::from_size_align(layout.size() + USIZE_SIZE, 1) {
Ok(layout) => layout,
Err(_err) => std::process::abort(),
};
System.dealloc(off_ptr as *mut u8, new_layout);
} else {
System.dealloc(ptr, layout);
}
}
}
#[test]
fn test_bytes_advance() {
let mut bytes = Bytes::from(vec![10, 20, 30]);
@@ -106,41 +77,3 @@ fn test_bytes_truncate_and_advance() {
bytes.advance(1);
drop(bytes);
}
/// Returns a dangling pointer with the given address. This is used to store
/// integer data in pointer fields.
#[inline]
fn invalid_ptr<T>(addr: usize) -> *mut T {
let ptr = std::ptr::null_mut::<u8>().wrapping_add(addr);
debug_assert_eq!(ptr as usize, addr);
ptr.cast::<T>()
}
#[test]
fn test_bytes_into_vec() {
let vec = vec![33u8; 1024];
// Test cases where kind == KIND_VEC
let b1 = Bytes::from(vec.clone());
assert_eq!(Vec::from(b1), vec);
// Test cases where kind == KIND_ARC, ref_cnt == 1
let b1 = Bytes::from(vec.clone());
drop(b1.clone());
assert_eq!(Vec::from(b1), vec);
// Test cases where kind == KIND_ARC, ref_cnt == 2
let b1 = Bytes::from(vec.clone());
let b2 = b1.clone();
assert_eq!(Vec::from(b1), vec);
// Test cases where vtable = SHARED_VTABLE, kind == KIND_ARC, ref_cnt == 1
assert_eq!(Vec::from(b2), vec);
// Test cases where offset != 0
let mut b1 = Bytes::from(vec.clone());
let b2 = b1.split_off(20);
assert_eq!(Vec::from(b2), vec[20..]);
assert_eq!(Vec::from(b1), vec[..20]);
}
-22
View File
@@ -133,28 +133,6 @@ fn vectored_read() {
}
}
#[test]
fn chain_growing_buffer() {
let mut buff = [b' '; 10];
let mut vec = b"wassup".to_vec();
let mut chained = (&mut buff[..]).chain_mut(&mut vec).chain_mut(Vec::new()); // Required for potential overflow because remaining_mut for Vec is isize::MAX - vec.len(), but for chain_mut is usize::MAX
chained.put_slice(b"hey there123123");
assert_eq!(&buff, b"hey there1");
assert_eq!(&vec, b"wassup23123");
}
#[test]
fn chain_overflow_remaining_mut() {
let mut chained = Vec::<u8>::new().chain_mut(Vec::new()).chain_mut(Vec::new());
assert_eq!(chained.remaining_mut(), usize::MAX);
chained.put_slice(&[0; 256]);
assert_eq!(chained.remaining_mut(), usize::MAX);
}
#[test]
fn chain_get_bytes() {
let mut ab = Bytes::copy_from_slice(b"ab");
+4 -4
View File
@@ -1,11 +1,11 @@
#![warn(rust_2018_idioms)]
use bytes::{buf::IntoIter, Bytes};
use bytes::Bytes;
#[test]
fn iter_len() {
let buf = Bytes::from_static(b"hello world");
let iter = IntoIter::new(buf);
let iter = buf.iter();
assert_eq!(iter.size_hint(), (11, Some(11)));
assert_eq!(iter.len(), 11);
@@ -13,8 +13,8 @@ fn iter_len() {
#[test]
fn empty_iter_len() {
let buf = Bytes::new();
let iter = IntoIter::new(buf);
let buf = Bytes::from_static(b"");
let iter = buf.iter();
assert_eq!(iter.size_hint(), (0, Some(0)));
assert_eq!(iter.len(), 0);
-86
View File
@@ -1,86 +0,0 @@
#![warn(rust_2018_idioms)]
use bytes::{buf::Limit, BufMut};
#[test]
fn long_limit() {
let buf = &mut [0u8; 10];
let limit = buf.limit(100);
assert_eq!(10, limit.remaining_mut());
assert_eq!(&[0u8; 10], &limit.get_ref()[..]);
}
#[test]
fn limit_get_mut() {
let buf = &mut [0u8; 128];
let mut limit = buf.limit(10);
assert_eq!(10, limit.remaining_mut());
assert_eq!(&mut [0u8; 128], &limit.get_mut()[..]);
}
#[test]
fn limit_set_limit() {
let buf = &mut [0u8; 128];
let mut limit = buf.limit(10);
assert_eq!(10, Limit::limit(&limit));
limit.set_limit(5);
assert_eq!(5, Limit::limit(&limit));
}
#[test]
fn limit_chunk_mut() {
let buf = &mut [0u8; 20];
let mut limit = buf.limit(10);
assert_eq!(10, limit.chunk_mut().len());
let buf = &mut [0u8; 10];
let mut limit = buf.limit(20);
assert_eq!(10, limit.chunk_mut().len());
}
#[test]
#[should_panic = "advance out of bounds"]
fn limit_advance_mut_panic_1() {
let buf = &mut [0u8; 10];
let mut limit = buf.limit(100);
unsafe {
limit.advance_mut(50);
}
}
#[test]
#[should_panic = "cnt <= self.limit"]
fn limit_advance_mut_panic_2() {
let buf = &mut [0u8; 100];
let mut limit = buf.limit(10);
unsafe {
limit.advance_mut(50);
}
}
#[test]
fn limit_advance_mut() {
let buf = &mut [0u8; 100];
let mut limit = buf.limit(10);
unsafe {
limit.advance_mut(5);
}
assert_eq!(5, limit.remaining_mut());
assert_eq!(5, limit.chunk_mut().len());
}
#[test]
fn limit_into_inner() {
let buf_arr = *b"hello world";
let buf: &mut [u8] = &mut buf_arr.clone();
let mut limit = buf.limit(4);
let mut dst = vec![];
unsafe {
limit.advance_mut(2);
}
let buf = limit.into_inner();
dst.put(&buf[..]);
assert_eq!(*dst, b"llo world"[..]);
}
-9
View File
@@ -27,12 +27,3 @@ fn buf_read() {
reader.read_line(&mut line).unwrap();
assert_eq!("world", &line);
}
#[test]
fn get_mut() {
let buf = &b"hello world"[..];
let mut reader = buf.reader();
let buf_mut = reader.get_mut();
assert_eq!(11, buf_mut.remaining());
assert_eq!(b"hello world", buf_mut);
}
-52
View File
@@ -30,55 +30,3 @@ fn take_copy_to_bytes_panics() {
let abcd = Bytes::copy_from_slice(b"abcd");
abcd.take(2).copy_to_bytes(3);
}
#[cfg(feature = "std")]
#[test]
fn take_chunks_vectored() {
fn chain() -> impl Buf {
Bytes::from([1, 2, 3].to_vec()).chain(Bytes::from([4, 5, 6].to_vec()))
}
{
let mut dst = [std::io::IoSlice::new(&[]); 2];
let take = chain().take(0);
assert_eq!(take.chunks_vectored(&mut dst), 0);
}
{
let mut dst = [std::io::IoSlice::new(&[]); 2];
let take = chain().take(1);
assert_eq!(take.chunks_vectored(&mut dst), 1);
assert_eq!(&*dst[0], &[1]);
}
{
let mut dst = [std::io::IoSlice::new(&[]); 2];
let take = chain().take(3);
assert_eq!(take.chunks_vectored(&mut dst), 1);
assert_eq!(&*dst[0], &[1, 2, 3]);
}
{
let mut dst = [std::io::IoSlice::new(&[]); 2];
let take = chain().take(4);
assert_eq!(take.chunks_vectored(&mut dst), 2);
assert_eq!(&*dst[0], &[1, 2, 3]);
assert_eq!(&*dst[1], &[4]);
}
{
let mut dst = [std::io::IoSlice::new(&[]); 2];
let take = chain().take(6);
assert_eq!(take.chunks_vectored(&mut dst), 2);
assert_eq!(&*dst[0], &[1, 2, 3]);
assert_eq!(&*dst[1], &[4, 5, 6]);
}
{
let mut dst = [std::io::IoSlice::new(&[]); 2];
let take = chain().take(7);
assert_eq!(take.chunks_vectored(&mut dst), 2);
assert_eq!(&*dst[0], &[1, 2, 3]);
assert_eq!(&*dst[1], &[4, 5, 6]);
}
}