void _bufferevent_decref_and_unlock(struct bufferevent *bufev) { struct bufferevent_private *bufev_private = EVUTIL_UPCAST(bufev, struct bufferevent_private, bev); struct bufferevent *underlying; if (--bufev_private->refcnt) { BEV_UNLOCK(bufev); return; } underlying = bufferevent_get_underlying(bufev); /* Clean up the shared info */ if (bufev->be_ops->destruct) bufev->be_ops->destruct(bufev); /* XXX what happens if refcnt for these buffers is > 1? * The buffers can share a lock with this bufferevent object, * but the lock might be destroyed below. */ /* evbuffer will free the callbacks */ evbuffer_free(bufev->input); evbuffer_free(bufev->output); if (bufev_private->rate_limiting) { if (bufev_private->rate_limiting->group) bufferevent_remove_from_rate_limit_group(bufev); if (event_initialized(&bufev_private->rate_limiting->refill_bucket_event)) event_del(&bufev_private->rate_limiting->refill_bucket_event); event_debug_unassign(&bufev_private->rate_limiting->refill_bucket_event); mm_free(bufev_private->rate_limiting); bufev_private->rate_limiting = NULL; } event_debug_unassign(&bufev->ev_read); event_debug_unassign(&bufev->ev_write); BEV_UNLOCK(bufev); if (bufev_private->own_lock) EVTHREAD_FREE_LOCK(bufev_private->lock, EVTHREAD_LOCKTYPE_RECURSIVE); /* Free the actual allocated memory. */ mm_free(bufev - bufev->be_ops->mem_offset); /* release the reference to underlying now that we no longer need * the reference to it. This is mainly in case our lock is shared * with underlying. * XXX Should we/can we just refcount evbuffer/bufferevent locks? * It would probably save us some headaches. */ if (underlying) bufferevent_decref(underlying); }
void evsig_dealloc(struct event_base *base) { int i = 0; if (base->sig.ev_signal_added) { event_del(&base->sig.ev_signal); event_debug_unassign(&base->sig.ev_signal); base->sig.ev_signal_added = 0; } for (i = 0; i < NSIG; ++i) { if (i < base->sig.sh_old_max && base->sig.sh_old[i] != NULL) _evsig_restore_handler(base, i); } if (base->sig.ev_signal_pair[0] != -1) { EVUTIL_CLOSESOCKET(base->sig.ev_signal_pair[0]); base->sig.ev_signal_pair[0] = -1; } if (base->sig.ev_signal_pair[1] != -1) { EVUTIL_CLOSESOCKET(base->sig.ev_signal_pair[1]); base->sig.ev_signal_pair[1] = -1; } base->sig.sh_old_max = 0; /* per index frees are handled in evsig_del() */ if (base->sig.sh_old) { mm_free(base->sig.sh_old); base->sig.sh_old = NULL; } }
static void event_listener_destroy(struct evconnlistener *lev) { struct evconnlistener_event *lev_e = EVUTIL_UPCAST(lev, struct evconnlistener_event, base); event_del(&lev_e->listener); if (lev->flags & LEV_OPT_CLOSE_ON_FREE) evutil_closesocket(event_get_fd(&lev_e->listener)); event_debug_unassign(&lev_e->listener); }
void evsig_dealloc(struct event_base *base) { int i = 0; if (base->sig.ev_signal_added) { event_del(&base->sig.ev_signal);//删除信号事件 base->sig.ev_signal_added = 0; } /* debug event is created in evsig_init/event_assign even when * ev_signal_added == 0, so unassign is required */ event_debug_unassign(&base->sig.ev_signal); //恢复所有的信号处理函数 for (i = 0; i < NSIG; ++i) { if (i < base->sig.sh_old_max && base->sig.sh_old[i] != NULL) _evsig_restore_handler(base, i); } EVSIGBASE_LOCK(); if (base == evsig_base) { evsig_base = NULL; evsig_base_n_signals_added = 0; evsig_base_fd = -1; } EVSIGBASE_UNLOCK(); //关闭socketpair描述府 if (base->sig.ev_signal_pair[0] != -1) { evutil_closesocket(base->sig.ev_signal_pair[0]); base->sig.ev_signal_pair[0] = -1; } if (base->sig.ev_signal_pair[1] != -1) { evutil_closesocket(base->sig.ev_signal_pair[1]); base->sig.ev_signal_pair[1] = -1; } base->sig.sh_old_max = 0; /* per index frees are handled in evsig_del() */ if (base->sig.sh_old) { mm_free(base->sig.sh_old); base->sig.sh_old = NULL; } }
void evsig_dealloc(struct event_base *base) { int i = 0; if (base->sig.ev_signal_added) { event_del(&base->sig.ev_signal); event_debug_unassign(&base->sig.ev_signal); base->sig.ev_signal_added = 0; } for (i = 0; i < NSIG; ++i) { if (i < base->sig.sh_old_max && base->sig.sh_old[i] != NULL) _evsig_restore_handler(base, i); } EVSIGBASE_LOCK(); if (base == evsig_base) { evsig_base = NULL; evsig_base_n_signals_added = 0; evsig_base_fd = -1; } EVSIGBASE_UNLOCK(); if (base->sig.ev_signal_pair[0] != -1) { evutil_closesocket(base->sig.ev_signal_pair[0]); base->sig.ev_signal_pair[0] = -1; } if (base->sig.ev_signal_pair[1] != -1) { evutil_closesocket(base->sig.ev_signal_pair[1]); base->sig.ev_signal_pair[1] = -1; } base->sig.sh_old_max = 0; /* per index frees are handled in evsig_del() */ if (base->sig.sh_old) { mm_free(base->sig.sh_old); base->sig.sh_old = NULL; } }