Task #11 — plocks.c stress test (test_plocks.c)
7 tests: basic rdlock/wrlock round-trip, recursive TLS counting (same
thread acquires rdlock N times; unlock only releases on final decrement),
upgrade under contention (N readers + towrlock; barrier-synchronized),
writer starvation prevention (sustained reader load; writer acquires
within 500ms), N-reader + M-writer counter-integrity stress test (ASAN),
and try-variant contention (trywrlock fails when another thread holds
rdlock). TSAN note documented: custom lock internals require ASAN-only
when ThreadSanitizer annotations are absent.
Task #12 — pfsupload send-function tests (pfsupload_send.c/h + test_pfsupload.c)
Extract psync_send_task_mkdir and psync_send_task_rmdir from pfsupload.c
into pclsync/pfsupload_send.c as non-static pfsupload_send_mkdir/rmdir.
Expose fsupload_task_t struct via pclsync/pfsupload_send.h. Add
__attribute__((weak)) get_urls() as an injectable URL seam for large-
upload paths. pfsupload.c updated to include pfsupload_send.h and use
the renamed functions in its dispatch table; pfsupload_send.o is
automatically picked up by the production wildcard build.
5 tests: mkdir (non-encrypted) command + folderid param, mkdir
(encrypted) key param present, rmdir command + sfolderid, API error path
(papi_send failure → -1), get_urls() weak override. Uses
--wrap=papi_send to intercept API calls and socketpair() to provide a
valid psock_t without real network I/O.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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