Thank you again!
发件人: Sanjiv <sanjiv....@gmail.com>
答复: <libevent-us...@freehaven.net>
日期: Fri, 20 Apr 2012 08:24:14 +0530
至: <libevent-us...@freehaven.net>
主题: Re: [Libevent-users] How can I write exact length of a evbuffer?
That's right, you can use event_free() to free a timer. If your event loop
is still active , I would recommed a evtimer_del() before event_free().
--
Sanjiv
On Fri, Apr 20, 2012 at 7:17 AM, Dawen Rie <dawenh...@126.com> wrote:
> Thank you very much, my problem solved!
> Can I ask other question?
> I find the evtimer_* macro as follow. It has evtimer_new but no
> evtimer_free? Is it means I don't need to free a evtimer_new return
> pointer? But I notice evtimer_new was defined as event_new, so I think it
> must be free by event_free, is it write? I had check the
> sample/timer_test.c, It just demo a stack base usage.
>
> /**
> @name evtimer_* macros
>
> Aliases for working with one-shot timer events */
> /**@{*/
> #define evtimer_assign(ev, b, cb, arg) \
> event_assign((ev), (b), -1, 0, (cb), (arg))
> #define evtimer_new(b, cb, arg) event_new((b), -1, 0, (cb), (arg))
> #define evtimer_add(ev, tv) event_add((ev), (tv))
> #define evtimer_del(ev) event_del(ev)
> #define evtimer_pending(ev, tv) event_pending((ev), EV_TIMEOUT, (tv))
> #define evtimer_initialized(ev) event_initialized(ev)
> /**@}*/
>
>
>
>
> 在 12-4-19 下午11:02， "Nick Mathewson" <ni...@freehaven.net> 写入:
>
>> >On Sat, Apr 14, 2012 at 4:15 AM, Dawen Rie <dawenh...@126.com> wrote:
>>> >> Hello everybody. I am a new user of libevent. I can't find the correct
>>> >>API
>>> >> to do my work.
>>> >> I had found the API:
>>> >>
>>> >> int bufferevent_write_buffer(struct bufferevent *bufev, struct evbuffer
>>> >> *buf);
>>> >> It will send all data of evbuffer. But I just want to send a special
>>> >> length not all.
>>> >>
>>> >> And API:
>>> >> int bufferevent_write(struct bufferevent *bufev, const void *data,
>>> >>size_t
>>> >> size);
>>> >>
>>> >>
>>> >> It require me copy out the data from evbuffer, I think it's
>>> >>inefficiency.
>>> >>
>>> >> So, is there andy API like:
>>> >> int bufferevent_write_buffer(struct bufferevent *bufev, struct evbuffer
>>> >> *buf, size_t size);
>>> >>
>>> >> It just send size of data in but?
>> >
>> >Hi!
>> >
>> >What you want to be looking at first is bufferevent_get_output(). It
>> >returns an output evbuffer that you can add data to manually. The
>> >bufferevent_write() and bufferevent_write_buffer() functions are thin
>> >wrappers around bufferevent_get_output() and one of the evbuffer_*
>> >functions.
>> >
>> >So now the question becomes, "how can I add move (but not all) of the
>> >data from one evbuffer to another?"
>> >
>> >For that, see evbuffer_remove_buffer().
>> >
>> >For more information, you might want to read the (perpetually
>> >work-in-progress) reference manual at
>> >http://www.wangafu.net/~nickm/libevent-book/
>> >
>> >yrs,
>> >--
>> >Nick
>> >***********************************************************************
>> >To unsubscribe, send an e-mail to majord...@freehaven.net with
>> >unsubscribe libevent-users in the body.
>
>
>
> ***********************************************************************
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> unsubscribe libevent-users in the body.
--
Sanjiv Raj
Marvin: I've been talking to the ship's computer.
Arthur: And?
Marvin: It hates me.
