| /* |
| Copyright (c) 2012-2013 Martin Sustrik All rights reserved. |
| Copyright 2016 Garrett D'Amore <garrett@damore.org> |
| |
| 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 "xpush.h" |
| |
| #include "../../nn.h" |
| #include "../../pipeline.h" |
| |
| #include "../utils/lb.h" |
| |
| #include "../../utils/err.h" |
| #include "../../utils/cont.h" |
| #include "../../utils/fast.h" |
| #include "../../utils/alloc.h" |
| #include "../../utils/attr.h" |
| |
| struct nn_xpush_data { |
| struct nn_lb_data lb; |
| }; |
| |
| struct nn_xpush { |
| struct nn_sockbase sockbase; |
| struct nn_lb lb; |
| }; |
| |
| /* Private functions. */ |
| static void nn_xpush_init (struct nn_xpush *self, |
| const struct nn_sockbase_vfptr *vfptr, void *hint); |
| static void nn_xpush_term (struct nn_xpush *self); |
| |
| /* Implementation of nn_sockbase's virtual functions. */ |
| static void nn_xpush_destroy (struct nn_sockbase *self); |
| static int nn_xpush_add (struct nn_sockbase *self, struct nn_pipe *pipe); |
| static void nn_xpush_rm (struct nn_sockbase *self, struct nn_pipe *pipe); |
| static void nn_xpush_in (struct nn_sockbase *self, struct nn_pipe *pipe); |
| static void nn_xpush_out (struct nn_sockbase *self, struct nn_pipe *pipe); |
| static int nn_xpush_events (struct nn_sockbase *self); |
| static int nn_xpush_send (struct nn_sockbase *self, struct nn_msg *msg); |
| static const struct nn_sockbase_vfptr nn_xpush_sockbase_vfptr = { |
| NULL, |
| nn_xpush_destroy, |
| nn_xpush_add, |
| nn_xpush_rm, |
| nn_xpush_in, |
| nn_xpush_out, |
| nn_xpush_events, |
| nn_xpush_send, |
| NULL, |
| NULL, |
| NULL |
| }; |
| |
| static void nn_xpush_init (struct nn_xpush *self, |
| const struct nn_sockbase_vfptr *vfptr, void *hint) |
| { |
| nn_sockbase_init (&self->sockbase, vfptr, hint); |
| nn_lb_init (&self->lb); |
| } |
| |
| static void nn_xpush_term (struct nn_xpush *self) |
| { |
| nn_lb_term (&self->lb); |
| nn_sockbase_term (&self->sockbase); |
| } |
| |
| void nn_xpush_destroy (struct nn_sockbase *self) |
| { |
| struct nn_xpush *xpush; |
| |
| xpush = nn_cont (self, struct nn_xpush, sockbase); |
| |
| nn_xpush_term (xpush); |
| nn_free (xpush); |
| } |
| |
| static int nn_xpush_add (struct nn_sockbase *self, struct nn_pipe *pipe) |
| { |
| struct nn_xpush *xpush; |
| struct nn_xpush_data *data; |
| int sndprio; |
| size_t sz; |
| |
| xpush = nn_cont (self, struct nn_xpush, sockbase); |
| |
| sz = sizeof (sndprio); |
| nn_pipe_getopt (pipe, NN_SOL_SOCKET, NN_SNDPRIO, &sndprio, &sz); |
| nn_assert (sz == sizeof (sndprio)); |
| nn_assert (sndprio >= 1 && sndprio <= 16); |
| |
| data = nn_alloc (sizeof (struct nn_xpush_data), "pipe data (push)"); |
| alloc_assert (data); |
| nn_pipe_setdata (pipe, data); |
| nn_lb_add (&xpush->lb, &data->lb, pipe, sndprio); |
| |
| return 0; |
| } |
| |
| static void nn_xpush_rm (struct nn_sockbase *self, struct nn_pipe *pipe) |
| { |
| struct nn_xpush *xpush; |
| struct nn_xpush_data *data; |
| |
| xpush = nn_cont (self, struct nn_xpush, sockbase); |
| data = nn_pipe_getdata (pipe); |
| nn_lb_rm (&xpush->lb, &data->lb); |
| nn_free (data); |
| |
| nn_sockbase_stat_increment (self, NN_STAT_CURRENT_SND_PRIORITY, |
| nn_lb_get_priority (&xpush->lb)); |
| } |
| |
| static void nn_xpush_in (NN_UNUSED struct nn_sockbase *self, |
| NN_UNUSED struct nn_pipe *pipe) |
| { |
| /* We are not going to receive any messages, so there's no need to store |
| the list of inbound pipes. */ |
| } |
| |
| static void nn_xpush_out (struct nn_sockbase *self, struct nn_pipe *pipe) |
| { |
| struct nn_xpush *xpush; |
| struct nn_xpush_data *data; |
| |
| xpush = nn_cont (self, struct nn_xpush, sockbase); |
| data = nn_pipe_getdata (pipe); |
| nn_lb_out (&xpush->lb, &data->lb); |
| nn_sockbase_stat_increment (self, NN_STAT_CURRENT_SND_PRIORITY, |
| nn_lb_get_priority (&xpush->lb)); |
| } |
| |
| static int nn_xpush_events (struct nn_sockbase *self) |
| { |
| return nn_lb_can_send (&nn_cont (self, struct nn_xpush, sockbase)->lb) ? |
| NN_SOCKBASE_EVENT_OUT : 0; |
| } |
| |
| static int nn_xpush_send (struct nn_sockbase *self, struct nn_msg *msg) |
| { |
| return nn_lb_send (&nn_cont (self, struct nn_xpush, sockbase)->lb, |
| msg, NULL); |
| } |
| |
| int nn_xpush_create (void *hint, struct nn_sockbase **sockbase) |
| { |
| struct nn_xpush *self; |
| |
| self = nn_alloc (sizeof (struct nn_xpush), "socket (push)"); |
| alloc_assert (self); |
| nn_xpush_init (self, &nn_xpush_sockbase_vfptr, hint); |
| *sockbase = &self->sockbase; |
| |
| return 0; |
| } |
| |
| int nn_xpush_ispeer (int socktype) |
| { |
| return socktype == NN_PULL ? 1 : 0; |
| } |
| |
| struct nn_socktype nn_xpush_socktype = { |
| AF_SP_RAW, |
| NN_PUSH, |
| NN_SOCKTYPE_FLAG_NORECV, |
| nn_xpush_create, |
| nn_xpush_ispeer, |
| }; |