ddidderr 1422d64300 feat(decompress): move decoder allocation bridges into Rust ...

Decoder orchestration already crossed into Rust, but the C translation unit
still owned the allocation bridge used by every decoder context and dictionary
set. That split kept custom malloc/calloc/free behavior, allocator-pair
validation, and the decoder-context storage lifecycle in C without focused
Rust coverage.

Move those bridges into Rust while keeping the C-defined `ZSTD_DCtx` layout and
configuration-dependent platform, legacy, and trace leaves in C. Rust now
validates custom allocator pairs, allocates and frees the opaque decoder
storage, dispatches default allocations to libc, and preserves calloc's
zero-fill contract for custom allocators. Focused tests cover default memory,
custom callbacks, zeroing, null-safe free, and invalid callback pairs.

Test Plan:
- `cargo test --manifest-path rust/Cargo.toml --lib -- --test-threads=1` -- 447 passed
- `cargo test --manifest-path rust/Cargo.toml --lib zstd_decompress -- --test-threads=1` -- 6 passed
- `cargo clippy --manifest-path rust/Cargo.toml --lib -- -D warnings` -- passed
- `cargo +nightly fmt --manifest-path rust/Cargo.toml -- --check` -- passed
- `make -B -C lib -j2 lib` -- passed
- `make -B -C tests -j2 test-cli-tests` -- passed
- `ZSTREAM_TESTTIME=-T2s make -B -C tests -j2 test-zstream` -- passed
- `FUZZERTEST=-T5s make -B -C tests -j2 test-fuzzer` -- passed
- `make -B -C tests/fuzz -j2 all` and `sequence_compression_api` -- passed
- `make -C tests -j2 test-zstd` -- passed, including large-data cases

2026-07-18 20:17:16 +02:00

..

legacy

feat(legacy): complete the v0.3 Huffman decoder path

2026-07-18 18:04:11 +02:00

benchfn.rs

feat(rust): port benchmark loop and CLI bench mode

2026-07-11 14:26:21 +02:00

benchzstd.rs

feat(bench): port benchzstd orchestration to Rust

2026-07-18 01:47:33 +02:00

bits.rs

test(rust): make entropy tests portable to 32-bit

2026-07-10 20:44:02 +02:00

bitstream.rs

feat(rust): add common primitive compatibility layer

2026-07-10 20:02:17 +02:00

common.rs

feat(rust): add common primitive compatibility layer

2026-07-10 20:02:17 +02:00

cpu.rs

feat(rust): add common primitive compatibility layer

2026-07-10 20:02:17 +02:00

datagen.rs

feat(cli): port the synthetic data generator to Rust

2026-07-12 09:16:42 +02:00

debug.rs

feat(rust): add common primitive compatibility layer

2026-07-10 20:02:17 +02:00

dibio.rs

feat(cli): port utility and dictionary I/O helpers to Rust

2026-07-12 18:06:51 +02:00

dict_builder_cover.rs

feat(compress): port multithreaded resource pools

2026-07-12 10:13:41 +02:00

dict_builder_fastcover.rs

feat(dict): port the FastCover trainer to Rust

2026-07-12 10:40:51 +02:00

dict_builder_zdict.rs

feat(dict-builder): own entropy analysis in Rust

2026-07-18 15:58:59 +02:00

divsufsort.rs

feat(rust): port divsufsort

2026-07-11 14:23:39 +02:00

entropy_common.rs

feat(rust): port FSE entropy decoding

2026-07-10 20:04:26 +02:00

errors.rs

feat(rust): add common primitive compatibility layer

2026-07-10 20:02:17 +02:00

fileio_asyncio.rs

feat(cli): move consecutive zstd frame dispatch into Rust

2026-07-18 19:34:33 +02:00

fileio_backend.rs

feat(cli): move destination opening into Rust

2026-07-18 18:44:12 +02:00

fileio_prefs.rs

feat(cli): move compression preference formatting into Rust

2026-07-18 17:54:12 +02:00

fse_compress.rs

test(rust): make entropy tests portable to 32-bit

2026-07-10 20:44:02 +02:00

fse_decompress.rs

feat(rust): port FSE entropy decoding

2026-07-10 20:04:26 +02:00

hist.rs

feat(rust): port histogram counting primitives

2026-07-10 20:06:25 +02:00

huf_compress.rs

fix(rust): match HUF tests to the forced decoder

2026-07-12 09:13:10 +02:00

huf_decompress.rs

feat(rust): port Huffman decompression

2026-07-10 20:48:51 +02:00

lib.rs

feat(compress): move block split search to Rust

2026-07-18 08:08:40 +02:00

lorem.rs

feat(cli): port the lorem generator to Rust

2026-07-12 09:16:59 +02:00

mem.rs

feat(rust): move wildcopy behind a narrow ABI leaf

2026-07-18 16:14:20 +02:00

pool.rs

test(pool): run C pool tests through the Rust implementation

2026-07-10 22:38:07 +02:00

threading.rs

feat(rust): port worker pool and pthread wrappers

2026-07-10 20:05:35 +02:00

timefn.rs

feat(rust): port program timing helpers

2026-07-11 14:25:32 +02:00

util.rs

feat(fileio): move output path construction to Rust

2026-07-18 02:52:26 +02:00

xxhash.rs

feat(rust): add common primitive compatibility layer

2026-07-10 20:02:17 +02:00

zbuff.rs

feat(rust): port deprecated ZBUFF streaming wrappers

2026-07-12 09:59:58 +02:00

zstd_cli.rs

docs(rust): refresh migration boundary

2026-07-18 18:56:29 +02:00

zstd_common.rs

feat(rust): add common primitive compatibility layer

2026-07-10 20:02:17 +02:00

zstd_compress_api.rs

feat(compress): move streaming size helpers to Rust

2026-07-18 09:26:44 +02:00

zstd_compress_block_split.rs

fix(compress): reserve the block split terminal boundary

2026-07-18 17:59:49 +02:00

zstd_compress_dictionary.rs

feat(compress): move dictionary entropy loading to Rust

2026-07-18 07:33:06 +02:00

zstd_compress_frame.rs

feat(compress): move block header serialization to Rust

2026-07-18 08:52:42 +02:00

zstd_compress_literals.rs

feat(rust): port block entropy statistics

2026-07-11 23:11:57 +02:00

zstd_compress_params_api.rs

feat(compress): move CCtx zstd parameter setter to Rust

2026-07-18 09:00:15 +02:00

zstd_compress_params.rs

feat(params): move context-free getters into Rust

2026-07-18 18:43:00 +02:00

zstd_compress_sequences.rs

feat(rust): port sequence entropy encoding

2026-07-10 22:44:39 +02:00

zstd_compress_stats.rs

feat(compress): move sequence-store validation to Rust

2026-07-18 08:28:49 +02:00

zstd_compress_superblock.rs

feat(rust): port block entropy statistics

2026-07-11 23:11:57 +02:00

zstd_compress.rs

feat(compress): move single-block serialization into Rust

2026-07-18 20:16:17 +02:00

zstd_ddict.rs

feat(rust): port decode dictionaries

2026-07-10 21:20:50 +02:00

zstd_decompress_block.rs

feat(rust): port compressed block decoding

2026-07-11 08:07:40 +02:00

zstd_decompress.rs

feat(decompress): move decoder allocation bridges into Rust

2026-07-18 20:17:16 +02:00

zstd_double_fast.rs

fix(compress): guard dictionary repcode coordinates

2026-07-18 17:13:27 +02:00

zstd_fast.rs

feat(rust): port fast block matching

2026-07-10 22:46:15 +02:00

zstd_lazy.rs

feat(rust): port lazy block matching

2026-07-11 08:06:30 +02:00

zstd_ldm.rs

feat(ldm): move limit-table scalar leaf to Rust

2026-07-18 15:39:37 +02:00

zstd_opt_tree.rs

feat(rust): port optimal binary-tree updates

2026-07-11 08:22:41 +02:00

zstd_opt.rs

fix(compress): guard dictionary repcode coordinates

2026-07-18 17:13:27 +02:00

zstd_presplit.rs

feat(rust): port compression block pre-splitting

2026-07-10 21:28:56 +02:00

zstdcli_trace.rs

feat(cli): move trace callbacks into Rust

2026-07-18 18:00:42 +02:00

zstdmt_compress.rs

feat(mt): move output publication into Rust

2026-07-18 19:00:22 +02:00