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  [pthread] Fix cond-var lock inversion and POSIX timedwait ABI (upstream #113) (#115) Stable

  Ghost released this 2026-07-13 17:29:17 -04:00 | 503 commits to 1016_part3 since this release

  Two follow-ups to upstream #102's condition-variable changes, as analyzed
  in upstream issue #113:

  • The pending-signal consume path reacquired the guest mutex while still
    holding the condition state lock, inverting lock order against
    cond-signal (mutex -> SyncRoot) and deadlocking both threads. Leave the
    condition lock before relocking, matching the normal wake path.
    This unfroze Dreaming Sarah (PPSA02929) at its title screen.

  • pthread_cond_timedwait's third argument is a pointer to an absolute
    CLOCK_REALTIME timespec, not a relative microsecond count; the guest
    address was being truncated into a duration, yielding arbitrary
    timeouts. Read the timespec and convert to a relative wait.
    scePthreadCondTimedwait keeps its separate relative-time ABI.

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