PTHREAD_ONCE_INIT
static pthread_once_t blockif_once = PTHREAD_ONCE_INIT;
static pthread_once_t mevent_once = PTHREAD_ONCE_INIT;
static pthread_once_t rfb_once = PTHREAD_ONCE_INIT;
#define ONCE_FLAG_INIT PTHREAD_ONCE_INIT
static pthread_once_t recv_once_control = PTHREAD_ONCE_INIT;
static pthread_once_t loaded_test_once = PTHREAD_ONCE_INIT;
static pthread_once_t once_control = PTHREAD_ONCE_INIT;
static pthread_once_t timer_once = PTHREAD_ONCE_INIT;
static pthread_once_t debug_once = PTHREAD_ONCE_INIT;
static pthread_once_t xsub_thrattr_once = PTHREAD_ONCE_INIT;
pthread_once_t dfltsa_inited = PTHREAD_ONCE_INIT;
static pthread_once_t xdoor_thrattr_once = PTHREAD_ONCE_INIT;
# define K5_ONCE_INIT { PTHREAD_ONCE_INIT, K5_OS_NOTHREAD_ONCE_INIT }
# define K5_ONCE_INIT PTHREAD_ONCE_INIT