OPAL_EVLOOP_ONCE   49 opal/mca/event/external/external.h #define OPAL_EVLOOP_ONCE     EVLOOP_ONCE        /**< Block at most once. */
OPAL_EVLOOP_ONCE   80 opal/mca/event/libevent2022/libevent2022.h #define OPAL_EVLOOP_ONCE     EVLOOP_ONCE        /**< Block at most once. */