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Diffstat (limited to 'protocols/Telegram/tgl/libevent/changelist-internal.h')
| -rw-r--r-- | protocols/Telegram/tgl/libevent/changelist-internal.h | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/protocols/Telegram/tgl/libevent/changelist-internal.h b/protocols/Telegram/tgl/libevent/changelist-internal.h deleted file mode 100644 index 98fc52aebf..0000000000 --- a/protocols/Telegram/tgl/libevent/changelist-internal.h +++ /dev/null @@ -1,102 +0,0 @@ -/* - * Copyright (c) 2009-2012 Niels Provos and Nick Mathewson - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#ifndef CHANGELIST_INTERNAL_H_INCLUDED_ -#define CHANGELIST_INTERNAL_H_INCLUDED_ - -/* - A "changelist" is a list of all the fd status changes that should be made - between calls to the backend's dispatch function. There are a few reasons - that a backend would want to queue changes like this rather than processing - them immediately. - - 1) Sometimes applications will add and delete the same event more than - once between calls to dispatch. Processing these changes immediately - is needless, and potentially expensive (especially if we're on a system - that makes one syscall per changed event). - - 2) Sometimes we can coalesce multiple changes on the same fd into a single - syscall if we know about them in advance. For example, epoll can do an - add and a delete at the same time, but only if we have found out about - both of them before we tell epoll. - - 3) Sometimes adding an event that we immediately delete can cause - unintended consequences: in kqueue, this makes pending events get - reported spuriously. - */ - -#include "event2/util.h" - -/** Represents a */ -struct event_change { - /** The fd or signal whose events are to be changed */ - evutil_socket_t fd; - /* The events that were enabled on the fd before any of these changes - were made. May include EV_READ or EV_WRITE. */ - short old_events; - - /* The changes that we want to make in reading and writing on this fd. - * If this is a signal, then read_change has EV_CHANGE_SIGNAL set, - * and write_change is unused. */ - ev_uint8_t read_change; - ev_uint8_t write_change; - ev_uint8_t close_change; -}; - -/* Flags for read_change and write_change. */ - -/* If set, add the event. */ -#define EV_CHANGE_ADD 0x01 -/* If set, delete the event. Exclusive with EV_CHANGE_ADD */ -#define EV_CHANGE_DEL 0x02 -/* If set, this event refers a signal, not an fd. */ -#define EV_CHANGE_SIGNAL EV_SIGNAL -/* Set for persistent events. Currently not used. */ -#define EV_CHANGE_PERSIST EV_PERSIST -/* Set for adding edge-triggered events. */ -#define EV_CHANGE_ET EV_ET - -/* The value of fdinfo_size that a backend should use if it is letting - * changelist handle its add and delete functions. */ -#define EVENT_CHANGELIST_FDINFO_SIZE sizeof(int) - -/** Set up the data fields in a changelist. */ -void event_changelist_init_(struct event_changelist *changelist); -/** Remove every change in the changelist, and make corresponding changes - * in the event maps in the base. This function is generally used right - * after making all the changes in the changelist. */ -void event_changelist_remove_all_(struct event_changelist *changelist, - struct event_base *base); -/** Free all memory held in a changelist. */ -void event_changelist_freemem_(struct event_changelist *changelist); - -/** Implementation of eventop_add that queues the event in a changelist. */ -int event_changelist_add_(struct event_base *base, evutil_socket_t fd, short old, short events, - void *p); -/** Implementation of eventop_del that queues the event in a changelist. */ -int event_changelist_del_(struct event_base *base, evutil_socket_t fd, short old, short events, - void *p); - -#endif |