Mercurial > hg > nginx
diff src/core/ngx_rwlock.c @ 8977:7c2adf237091 quic
Merged with the default branch.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Tue, 25 Jan 2022 23:42:48 +0300 |
parents | 7752d8523066 |
children |
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--- a/src/core/ngx_rwlock.c +++ b/src/core/ngx_rwlock.c @@ -89,22 +89,10 @@ ngx_rwlock_rlock(ngx_atomic_t *lock) void ngx_rwlock_unlock(ngx_atomic_t *lock) { - ngx_atomic_uint_t readers; - - readers = *lock; - - if (readers == NGX_RWLOCK_WLOCK) { + if (*lock == NGX_RWLOCK_WLOCK) { (void) ngx_atomic_cmp_set(lock, NGX_RWLOCK_WLOCK, 0); - return; - } - - for ( ;; ) { - - if (ngx_atomic_cmp_set(lock, readers, readers - 1)) { - return; - } - - readers = *lock; + } else { + (void) ngx_atomic_fetch_add(lock, -1); } }