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| author | Kyle Huey <khuey@kylehuey.com> | 2017-12-03 20:45:12 -0800 |
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| committer | Kyle Huey <khuey@kylehuey.com> | 2017-12-03 20:45:12 -0800 |
| commit | 02c1862fb55c6ae4198038b1b317bcdd06e395d1 (patch) | |
| tree | 3dc542449e75d299a09217a504cae3b3e6f0aef1 /src/libstd/sys/unix/stack_overflow.rs | |
| parent | f2b11f30b2946119c23594bc2b3bec3c38d3ae9a (diff) | |
| download | rust-02c1862fb55c6ae4198038b1b317bcdd06e395d1.tar.gz rust-02c1862fb55c6ae4198038b1b317bcdd06e395d1.zip | |
Add a specialization of read_exact for Cursor.
The read_exact implementation for &[u8] is optimized and usually allows LLVM to reduce a read_exact call for small numbers of bytes to a bounds check and a register load instead of a generic memcpy. On a workload I have that decompresses, deserializes (via bincode), and processes some data, this leads to a 40% speedup by essentially eliminating the deserialization overhead entirely.
Diffstat (limited to 'src/libstd/sys/unix/stack_overflow.rs')
0 files changed, 0 insertions, 0 deletions