Add persistent compact integer vector and cache-line-optimized MPHF

Introduce the `obicompactvec` crate, featuring a two-tier, memory-mapped integer vector that uses a primary `u8` array with a sentinel for overflow dispatch and a sparse L1-resident index for fast random access. Implement builder and reader modules with zero-copy serialization and comprehensive test coverage. Update `obilayeredmap` to replace the default hash function with a cache-line-optimized `Mphf`, adding explicit bounds checking and duplicate-slot detection. Add documentation for both modules and update project configuration files accordingly.

This commit is contained in:

Eric Coissac

2026-05-13 06:24:43 +08:00

parent 84ed752b78

commit f2de79acde

14 changed files with 710 additions and 91 deletions

									
										src/obicompactvec/Cargo.toml
									
		+10
		
												View File
												
				@@ -0,0 +1,10 @@

				[package]

				name = "obicompactvec"

				version = "0.1.0"

				edition = "2024"

				[dependencies]

				memmap2 = "0.9"

				[dev-dependencies]

				tempfile = "3"