lockinit
#define os_rwl_init(lock) lockinit(lock, "nvmmrw", 0, 0)
#define os_mtx_init(lock) lockinit(lock, "nvmmmtx", 0, 0)
#define os_rwl_init(lock) lockinit(lock, "nvmmrw", 0, 0)
#define os_mtx_init(lock) lockinit(lock, "nvmmmtx", 0, 0)
pthread_once(&_nslockinit, lockinit);