| /* |
| 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 "xpair.h" |
| |
| #include "../../nn.h" |
| #include "../../pair.h" |
| |
| #include "../utils/excl.h" |
| |
| #include "../../utils/err.h" |
| #include "../../utils/cont.h" |
| #include "../../utils/fast.h" |
| #include "../../utils/alloc.h" |
| #include "../../utils/list.h" |
| #include "../../utils/attr.h" |
| |
| struct nn_xpair { |
| struct nn_sockbase sockbase; |
| struct nn_excl excl; |
| }; |
| |
| /* Private functions. */ |
| static void nn_xpair_init (struct nn_xpair *self, |
| const struct nn_sockbase_vfptr *vfptr, void *hint); |
| static void nn_xpair_term (struct nn_xpair *self); |
| |
| /* Implementation of nn_sockbase's virtual functions. */ |
| static void nn_xpair_destroy (struct nn_sockbase *self); |
| static int nn_xpair_add (struct nn_sockbase *self, struct nn_pipe *pipe); |
| static void nn_xpair_rm (struct nn_sockbase *self, struct nn_pipe *pipe); |
| static void nn_xpair_in (struct nn_sockbase *self, struct nn_pipe *pipe); |
| static void nn_xpair_out (struct nn_sockbase *self, struct nn_pipe *pipe); |
| static int nn_xpair_events (struct nn_sockbase *self); |
| static int nn_xpair_send (struct nn_sockbase *self, struct nn_msg *msg); |
| static int nn_xpair_recv (struct nn_sockbase *self, struct nn_msg *msg); |
| static int nn_xpair_setopt (struct nn_sockbase *self, int level, int option, |
| const void *optval, size_t optvallen); |
| static int nn_xpair_getopt (struct nn_sockbase *self, int level, int option, |
| void *optval, size_t *optvallen); |
| static const struct nn_sockbase_vfptr nn_xpair_sockbase_vfptr = { |
| NULL, |
| nn_xpair_destroy, |
| nn_xpair_add, |
| nn_xpair_rm, |
| nn_xpair_in, |
| nn_xpair_out, |
| nn_xpair_events, |
| nn_xpair_send, |
| nn_xpair_recv, |
| nn_xpair_setopt, |
| nn_xpair_getopt |
| }; |
| |
| static void nn_xpair_init (struct nn_xpair *self, |
| const struct nn_sockbase_vfptr *vfptr, void *hint) |
| { |
| nn_sockbase_init (&self->sockbase, vfptr, hint); |
| nn_excl_init (&self->excl); |
| } |
| |
| static void nn_xpair_term (struct nn_xpair *self) |
| { |
| nn_excl_term (&self->excl); |
| nn_sockbase_term (&self->sockbase); |
| } |
| |
| void nn_xpair_destroy (struct nn_sockbase *self) |
| { |
| struct nn_xpair *xpair; |
| |
| xpair = nn_cont (self, struct nn_xpair, sockbase); |
| |
| nn_xpair_term (xpair); |
| nn_free (xpair); |
| } |
| |
| static int nn_xpair_add (struct nn_sockbase *self, struct nn_pipe *pipe) |
| { |
| return nn_excl_add (&nn_cont (self, struct nn_xpair, sockbase)->excl, |
| pipe); |
| } |
| |
| static void nn_xpair_rm (struct nn_sockbase *self, struct nn_pipe *pipe) |
| { |
| nn_excl_rm (&nn_cont (self, struct nn_xpair, sockbase)->excl, pipe); |
| } |
| |
| static void nn_xpair_in (struct nn_sockbase *self, struct nn_pipe *pipe) |
| { |
| nn_excl_in (&nn_cont (self, struct nn_xpair, sockbase)->excl, pipe); |
| } |
| |
| static void nn_xpair_out (struct nn_sockbase *self, struct nn_pipe *pipe) |
| { |
| nn_excl_out (&nn_cont (self, struct nn_xpair, sockbase)->excl, pipe); |
| } |
| |
| static int nn_xpair_events (struct nn_sockbase *self) |
| { |
| struct nn_xpair *xpair; |
| int events; |
| |
| xpair = nn_cont (self, struct nn_xpair, sockbase); |
| |
| events = 0; |
| if (nn_excl_can_recv (&xpair->excl)) |
| events |= NN_SOCKBASE_EVENT_IN; |
| if (nn_excl_can_send (&xpair->excl)) |
| events |= NN_SOCKBASE_EVENT_OUT; |
| return events; |
| } |
| |
| static int nn_xpair_send (struct nn_sockbase *self, struct nn_msg *msg) |
| { |
| return nn_excl_send (&nn_cont (self, struct nn_xpair, sockbase)->excl, |
| msg); |
| } |
| |
| static int nn_xpair_recv (struct nn_sockbase *self, struct nn_msg *msg) |
| { |
| int rc; |
| |
| rc = nn_excl_recv (&nn_cont (self, struct nn_xpair, sockbase)->excl, msg); |
| |
| /* Discard NN_PIPEBASE_PARSED flag. */ |
| return rc < 0 ? rc : 0; |
| } |
| |
| static int nn_xpair_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; |
| } |
| |
| static int nn_xpair_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; |
| } |
| |
| int nn_xpair_create (void *hint, struct nn_sockbase **sockbase) |
| { |
| struct nn_xpair *self; |
| |
| self = nn_alloc (sizeof (struct nn_xpair), "socket (pair)"); |
| alloc_assert (self); |
| nn_xpair_init (self, &nn_xpair_sockbase_vfptr, hint); |
| *sockbase = &self->sockbase; |
| |
| return 0; |
| } |
| |
| int nn_xpair_ispeer (int socktype) |
| { |
| return socktype == NN_PAIR ? 1 : 0; |
| } |
| |
| static struct nn_socktype nn_xpair_socktype_struct = { |
| AF_SP_RAW, |
| NN_PAIR, |
| 0, |
| nn_xpair_create, |
| nn_xpair_ispeer, |
| NN_LIST_ITEM_INITIALIZER |
| }; |
| |
| struct nn_socktype *nn_xpair_socktype = &nn_xpair_socktype_struct; |
| |