Mara 60138110d7 Rollup merge of #81136 - Xavientois:io_reader_size_hint, r=cramertj ...

Improved IO Bytes Size Hint

After trying to implement better `size_hint()` return values for `File` in [this PR](https://github.com/rust-lang/rust/pull/81044) and changing to implementing it for `BufReader` in [this PR](https://github.com/rust-lang/rust/pull/81052), I have arrived at this implementation that provides tighter bounds for the `Bytes` iterator of various readers including `BufReader`, `Empty`, and `Chain`.

Unfortunately, for `BufReader`, the size_hint only improves after calling `fill_buffer` due to it using the contents of the buffer for the hint. Nevertheless, the the tighter bounds  should result in better pre-allocation of space to handle the contents of the `Bytes` iterator.

Closes #81052

2021-03-05 10:57:17 +01:00

..

benches

mv std libs to library/

2020-07-27 19:51:13 -05:00

src

Rollup merge of #81136 - Xavientois:io_reader_size_hint, r=cramertj

2021-03-05 10:57:17 +01:00

tests

Fix SGX CI, take 3

2020-12-07 15:22:34 +01:00

build.rs

Drop support for cloudabi targets

2020-11-22 17:11:41 -05:00

Cargo.toml

Bump minimum libc version to 0.2.85 for std.

2021-02-24 12:47:28 +01:00