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#ifndef TARANTOOL_COIO_BUF_H_INCLUDED
#define TARANTOOL_COIO_BUF_H_INCLUDED
/*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``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
* <COPYRIGHT HOLDER> OR CONTRIBUTORS 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.
*/
#include "coio.h"
#include "iobuf.h"
/** Buffered cooperative IO */
/**
* Read at least sz bytes, buffered.
* Return the number of bytes read (can be less than n in case
* of EOF).
*/
static inline ssize_t
coio_bread(struct ev_io *coio, struct ibuf *buf, size_t sz)
{
ibuf_reserve(buf, sz);
ssize_t n = coio_read_ahead(coio, buf->end, sz, ibuf_unused(buf));
buf->end += n;
return n;
}
/**
* Read at least sz bytes buffered or until a timeout reached.
* Return the amount of bytes read (can be less than sz
* in case of EOF or timeout).
*/
static inline ssize_t
coio_bread_timeout(struct ev_io *coio, struct ibuf *buf, size_t sz,
ev_tstamp timeout)
{
ibuf_reserve(buf, sz);
ssize_t n = coio_read_ahead_timeout(coio, buf->end, sz, ibuf_unused(buf),
timeout);
buf->end += n;
return n;
}
/** Read at least sz bytes, buffered. Throw an exception in case of EOF. */
static inline ssize_t
coio_breadn(struct ev_io *coio, struct ibuf *buf, size_t sz)
{
ibuf_reserve(buf, sz);
ssize_t n = coio_readn_ahead(coio, buf->end, sz, ibuf_unused(buf));
buf->end += n;
return n;
}
/** Reat at least sz bytes, buffered. Throw an exception in case
* of EOF.
* @return the number of bytes read. Can be less than sz in
* case of timeout.
*/
static inline ssize_t
coio_breadn_timeout(struct ev_io *coio, struct ibuf *buf, size_t sz,
ev_tstamp timeout)
{
ibuf_reserve(buf, sz);
ssize_t n = coio_readn_ahead_timeout(coio, buf->end, sz, ibuf_unused(buf),
timeout);
buf->end += n;
return n;
}
#endif /* TARANTOOL_COIO_BUF_H_INCLUDED */
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