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Support process shared pthread_rwlock

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Cosmo now has a non-nsync implementation of POSIX read-write locks. It's
possible to call pthread_rwlockattr_setpshared in PTHREAD_PROCESS_SHARED
mode. Furthermore, if cosmo is built with PTHREAD_USE_NSYNC set to zero,
then Cosmo shouldn't use nsync at all. That's helpful if you want to not
link any Apache 2.0 licensed code.
This commit is contained in:
Justine Tunney 2024-12-13 02:50:19 -08:00
parent c22b413ac4
commit 2d43d400c6
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GPG key ID: BE714B4575D6E328
11 changed files with 179 additions and 35 deletions
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4
libc/thread/pthread_rwlock_init.c
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@ -26,6 +26,8 @@
*/
errno_t pthread_rwlock_init(pthread_rwlock_t *rwlock,
const pthread_rwlockattr_t *attr) {
*rwlock = (pthread_rwlock_t){0};
*rwlock = (pthread_rwlock_t){
._pshared = attr ? *attr : PTHREAD_PROCESS_PRIVATE,
};
return 0;
}