macos: fix gu_cond usage for darwin after 09848b6 #25
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the patch 09848b6 by Jan from 2021-11-11 14:22:24 +0200 that swapped the order of the arguments to gu_mutex_init_SYS. so now its `gu_mutex_init_SYS(const wsrep_mutex_key_t* key, gu_mutex_t_SYS *mutex)` so that for keyless mutexes its using (NULL, &mutex). considering GU_BARRIER_THREAD_SYS replacement: it was introduced by dabe053 8 years ago, but I suppose it never compiled as at that moment there were no GU_BARRIER_THREAD_SYS. it is synonymous to PTHREAD_BARRIER_SERIAL_THREAD that is must return something non-usual on success (here its -1) for a thread synced with a barrier as per POSIX https://linux.die.net/man/3/pthread_barrier_wait > The constant PTHREAD_BARRIER_SERIAL_THREAD is defined in <[pthread.h](https://linux.die.net/include/pthread.h)> and its value shall be distinct from any other value returned by pthread_barrier_wait(). > Upon successful completion, the pthread_barrier_wait() function shall return PTHREAD_BARRIER_SERIAL_THREAD for a single (arbitrary) thread synchronized at the barrier and zero for each of the other threads. there is no such a constant in the code GU_BARRIER_THREAD_SYS. Signed-off-by: Ivan Prisyazhnyy <[email protected]>
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macos: fix gu_cond usage for darwin after 09848b6
the patch 09848b6 by Jan from 2021-11-11 14:22:24 +0200 that swapped the
order of the arguments to gu_mutex_init_SYS. so now its
gu_mutex_init_SYS(const wsrep_mutex_key_t* key, gu_mutex_t_SYS *mutex)so that for keyless mutexes its using (NULL, &mutex).
considering GU_BARRIER_THREAD_SYS replacement:
it was introduced by dabe053 8 years ago, but I suppose it never
compiled as at that moment there were no GU_BARRIER_THREAD_SYS.
it is synonymous to PTHREAD_BARRIER_SERIAL_THREAD that is must return
something non-usual on success (here its -1) for a thread synced with a
barrier as per POSIX https://linux.die.net/man/3/pthread_barrier_wait
there is no such a constant in the code GU_BARRIER_THREAD_SYS.
follow up #20
CI https://buildbot.mariadb.org/#/grid?branch=refs%2Fpull%2F25%2Fmerge