Crate io_buffer 

io-buffer

This crate provide a 16 Bytes Buffer type, to unify the difference of different types of buffer, for disk and network IO:

• max buffer size 1 << 31,

• Converts owned buffer, From<Vec<u8>> and To<Vec<u8>>.

• Allocation with malloc()

• Allocation with posix_memalign()

• Converts from const reference, or from mutable reference of unsafe c code.

On debug mode, provides runtime checking if you try to as_mut() a const buffer.

Usage

Cargo.toml:

[dependencies]
io-buffer = "1"

Feature flags

• compress: enable [Compression] trait

• lz4: enable lz4 compression

• rand: enable rand_buffer() function

• fail: enable fail injection point “alloc_buf” of return buffer allocate with random uninit content

Modules

compresscompress

Enabled with feature compress

Structs

Buffer

Buffer is a static type, size and cap (max to i32). Memory footprint is only 16B.

Constants

MAX_BUFFER_SIZE

Functions

is_all_zero

Test whether a buffer is all set to zero

rand_bufferrand

Produce ascii random string

safe_copy

Only copy the 0..min(dst, src) of src to dst, return the bytes copied.

set_zero

Set a buffer to zero