ngx_mutex_destroy  260 event/modules/ngx_kqueue_module.c     ngx_mutex_destroy(kevent_mutex);
ngx_mutex_destroy  261 event/modules/ngx_kqueue_module.c     ngx_mutex_destroy(list_mutex);
ngx_mutex_destroy 1193 os/unix/ngx_process_cycle.c             ngx_mutex_destroy(ngx_event_timer_mutex);
ngx_mutex_destroy 1194 os/unix/ngx_process_cycle.c             ngx_mutex_destroy(ngx_posted_events_mutex);
ngx_mutex_destroy  100 os/unix/ngx_thread.h void ngx_mutex_destroy(ngx_mutex_t *m);