ddidderr/zstd-rs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix(mt): keep projected job snapshots under mutex

Browse Source 
The Rust-owned frame-progression ring scan consumes ZSTDMT_jobProjection
through ZSTDMT_projectJob. That callback previously copied counters under
job_mutex but read source and prefix metadata after unlocking. Keep the
complete projection in one mutex-protected snapshot, matching the original
ZSTDMT_getFrameProgression access pattern without moving descriptor or
synchronization ownership out of C.

Test Plan:
- `rustfmt --check --edition 2021 rust/src/zstdmt_compress.rs` -- passed.
- `git diff --check` and `git diff --cached --check` -- passed.
- Static inspection only; no cargo, make, native binaries, tests, fuzzers,
  or heavyweight commands were run.
This commit is contained in:
ddidderr
2026-07-20 02:23:26 +02:00
parent 2c605eef4e
commit edc5a11757
2 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/compress/zstdmt_compress.c
+2 -2
View File
@@ -1703,12 +1703,12 @@ static void ZSTDMT_projectJob(void* opaque, unsigned jobID,
ZSTD_pthread_mutex_lock(&job->job_mutex);
projection->consumed = job->consumed;
projection->cSize = job->cSize;
projection->dstFlushed = job->dstFlushed;
ZSTD_pthread_mutex_unlock(&job->job_mutex);
projection->srcStart = job->src.start;
projection->srcSize = job->src.size;
projection->prefixStart = job->prefix.start;
projection->prefixSize = job->prefix.size;
projection->dstFlushed = job->dstFlushed;
ZSTD_pthread_mutex_unlock(&job->job_mutex);
}
static void ZSTDMT_freeJobsTable(ZSTDMT_jobDescription* jobTable, U32 nbJobs, ZSTD_customMem cMem)