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/*
Copyright (c) 2012-2013 Martin Sustrik All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom
the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
IN THE SOFTWARE.
*/
#include "xsurveyor.h"
#include "../../nn.h"
#include "../../survey.h"
#include "../../utils/err.h"
#include "../../utils/cont.h"
#include "../../utils/fast.h"
#include "../../utils/list.h"
#include "../../utils/alloc.h"
#include "../../utils/list.h"
#include "../../utils/attr.h"
#include <stddef.h>
/* Private functions. */
static void nn_xsurveyor_destroy (struct nn_sockbase *self);
/* Implementation of nn_sockbase's virtual functions. */
static const struct nn_sockbase_vfptr nn_xsurveyor_sockbase_vfptr = {
NULL,
nn_xsurveyor_destroy,
nn_xsurveyor_add,
nn_xsurveyor_rm,
nn_xsurveyor_in,
nn_xsurveyor_out,
nn_xsurveyor_events,
nn_xsurveyor_send,
nn_xsurveyor_recv,
nn_xsurveyor_setopt,
nn_xsurveyor_getopt
};
void nn_xsurveyor_init (struct nn_xsurveyor *self,
const struct nn_sockbase_vfptr *vfptr, void *hint)
{
nn_sockbase_init (&self->sockbase, vfptr, hint);
nn_dist_init (&self->outpipes);
nn_fq_init (&self->inpipes);
}
void nn_xsurveyor_term (struct nn_xsurveyor *self)
{
nn_fq_term (&self->inpipes);
nn_dist_term (&self->outpipes);
nn_sockbase_term (&self->sockbase);
}
static void nn_xsurveyor_destroy (struct nn_sockbase *self)
{
struct nn_xsurveyor *xsurveyor;
xsurveyor = nn_cont (self, struct nn_xsurveyor, sockbase);
nn_xsurveyor_term (xsurveyor);
nn_free (xsurveyor);
}
int nn_xsurveyor_add (struct nn_sockbase *self, struct nn_pipe *pipe)
{
struct nn_xsurveyor *xsurveyor;
struct nn_xsurveyor_data *data;
int rcvprio;
size_t sz;
xsurveyor = nn_cont (self, struct nn_xsurveyor, sockbase);
sz = sizeof (rcvprio);
nn_pipe_getopt (pipe, NN_SOL_SOCKET, NN_RCVPRIO, &rcvprio, &sz);
nn_assert (sz == sizeof (rcvprio));
nn_assert (rcvprio >= 1 && rcvprio <= 16);
data = nn_alloc (sizeof (struct nn_xsurveyor_data),
"pipe data (xsurveyor)");
alloc_assert (data);
data->pipe = pipe;
nn_fq_add (&xsurveyor->inpipes, &data->initem, pipe, rcvprio);
nn_dist_add (&xsurveyor->outpipes, &data->outitem, pipe);
nn_pipe_setdata (pipe, data);
return 0;
}
void nn_xsurveyor_rm (struct nn_sockbase *self, struct nn_pipe *pipe)
{
struct nn_xsurveyor *xsurveyor;
struct nn_xsurveyor_data *data;
xsurveyor = nn_cont (self, struct nn_xsurveyor, sockbase);
data = nn_pipe_getdata (pipe);
nn_fq_rm (&xsurveyor->inpipes, &data->initem);
nn_dist_rm (&xsurveyor->outpipes, &data->outitem);
nn_free (data);
}
void nn_xsurveyor_in (struct nn_sockbase *self, struct nn_pipe *pipe)
{
struct nn_xsurveyor *xsurveyor;
struct nn_xsurveyor_data *data;
xsurveyor = nn_cont (self, struct nn_xsurveyor, sockbase);
data = nn_pipe_getdata (pipe);
nn_fq_in (&xsurveyor->inpipes, &data->initem);
}
void nn_xsurveyor_out (struct nn_sockbase *self, struct nn_pipe *pipe)
{
struct nn_xsurveyor *xsurveyor;
struct nn_xsurveyor_data *data;
xsurveyor = nn_cont (self, struct nn_xsurveyor, sockbase);
data = nn_pipe_getdata (pipe);
nn_dist_out (&xsurveyor->outpipes, &data->outitem);
}
int nn_xsurveyor_events (struct nn_sockbase *self)
{
struct nn_xsurveyor *xsurveyor;
int events;
xsurveyor = nn_cont (self, struct nn_xsurveyor, sockbase);
events = NN_SOCKBASE_EVENT_OUT;
if (nn_fq_can_recv (&xsurveyor->inpipes))
events |= NN_SOCKBASE_EVENT_IN;
return events;
}
int nn_xsurveyor_send (struct nn_sockbase *self, struct nn_msg *msg)
{
return nn_dist_send (
&nn_cont (self, struct nn_xsurveyor, sockbase)->outpipes, msg, NULL);
}
int nn_xsurveyor_recv (struct nn_sockbase *self, struct nn_msg *msg)
{
int rc;
struct nn_xsurveyor *xsurveyor;
xsurveyor = nn_cont (self, struct nn_xsurveyor, sockbase);
rc = nn_fq_recv (&xsurveyor->inpipes, msg, NULL);
if (nn_slow (rc < 0))
return rc;
/* Split the header from the body, if needed. */
if (!(rc & NN_PIPE_PARSED)) {
if (nn_slow (nn_chunkref_size (&msg->body) < sizeof (uint32_t))) {
nn_msg_term (msg);
return -EAGAIN;
}
nn_assert (nn_chunkref_size (&msg->sphdr) == 0);
nn_chunkref_term (&msg->sphdr);
nn_chunkref_init (&msg->sphdr, sizeof (uint32_t));
memcpy (nn_chunkref_data (&msg->sphdr), nn_chunkref_data (&msg->body),
sizeof (uint32_t));
nn_chunkref_trim (&msg->body, sizeof (uint32_t));
}
return 0;
}
int nn_xsurveyor_setopt (NN_UNUSED struct nn_sockbase *self,
NN_UNUSED int level, NN_UNUSED int option,
NN_UNUSED const void *optval, NN_UNUSED size_t optvallen)
{
return -ENOPROTOOPT;
}
int nn_xsurveyor_getopt (NN_UNUSED struct nn_sockbase *self,
NN_UNUSED int level, NN_UNUSED int option,
NN_UNUSED void *optval, NN_UNUSED size_t *optvallen)
{
return -ENOPROTOOPT;
}
static int nn_xsurveyor_create (void *hint, struct nn_sockbase **sockbase)
{
struct nn_xsurveyor *self;
self = nn_alloc (sizeof (struct nn_xsurveyor), "socket (xsurveyor)");
alloc_assert (self);
nn_xsurveyor_init (self, &nn_xsurveyor_sockbase_vfptr, hint);
*sockbase = &self->sockbase;
return 0;
}
int nn_xsurveyor_ispeer (int socktype)
{
return socktype == NN_RESPONDENT ? 1 : 0;
}
static struct nn_socktype nn_xsurveyor_socktype_struct = {
AF_SP_RAW,
NN_SURVEYOR,
0,
nn_xsurveyor_create,
nn_xsurveyor_ispeer,
NN_LIST_ITEM_INITIALIZER
};
struct nn_socktype *nn_xsurveyor_socktype = &nn_xsurveyor_socktype_struct;