| /* |
| Copyright (c) 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 "bus.h" |
| #include "xbus.h" |
| |
| #include "../../nn.h" |
| #include "../../bus.h" |
| |
| #include "../../utils/cont.h" |
| #include "../../utils/alloc.h" |
| #include "../../utils/err.h" |
| #include "../../utils/list.h" |
| |
| struct nn_bus { |
| struct nn_xbus xbus; |
| }; |
| |
| /* Private functions. */ |
| static void nn_bus_init (struct nn_bus *self, |
| const struct nn_sockbase_vfptr *vfptr, void *hint); |
| static void nn_bus_term (struct nn_bus *self); |
| |
| /* Implementation of nn_sockbase's virtual functions. */ |
| static void nn_bus_destroy (struct nn_sockbase *self); |
| static int nn_bus_send (struct nn_sockbase *self, struct nn_msg *msg); |
| static int nn_bus_recv (struct nn_sockbase *self, struct nn_msg *msg); |
| static const struct nn_sockbase_vfptr nn_bus_sockbase_vfptr = { |
| NULL, |
| nn_bus_destroy, |
| nn_xbus_add, |
| nn_xbus_rm, |
| nn_xbus_in, |
| nn_xbus_out, |
| nn_xbus_events, |
| nn_bus_send, |
| nn_bus_recv, |
| nn_xbus_setopt, |
| nn_xbus_getopt |
| }; |
| |
| static void nn_bus_init (struct nn_bus *self, |
| const struct nn_sockbase_vfptr *vfptr, void *hint) |
| { |
| nn_xbus_init (&self->xbus, vfptr, hint); |
| } |
| |
| static void nn_bus_term (struct nn_bus *self) |
| { |
| nn_xbus_term (&self->xbus); |
| } |
| |
| static void nn_bus_destroy (struct nn_sockbase *self) |
| { |
| struct nn_bus *bus; |
| |
| bus = nn_cont (self, struct nn_bus, xbus.sockbase); |
| |
| nn_bus_term (bus); |
| nn_free (bus); |
| } |
| |
| static int nn_bus_send (struct nn_sockbase *self, struct nn_msg *msg) |
| { |
| int rc; |
| struct nn_bus *bus; |
| |
| bus = nn_cont (self, struct nn_bus, xbus.sockbase); |
| |
| /* Check for malformed messages. */ |
| if (nn_chunkref_size (&msg->sphdr)) |
| return -EINVAL; |
| |
| /* Send the message. */ |
| rc = nn_xbus_send (&bus->xbus.sockbase, msg); |
| errnum_assert (rc == 0, -rc); |
| |
| return 0; |
| } |
| |
| static int nn_bus_recv (struct nn_sockbase *self, struct nn_msg *msg) |
| { |
| int rc; |
| struct nn_bus *bus; |
| |
| bus = nn_cont (self, struct nn_bus, xbus.sockbase); |
| |
| /* Get next message. */ |
| rc = nn_xbus_recv (&bus->xbus.sockbase, msg); |
| if (nn_slow (rc == -EAGAIN)) |
| return -EAGAIN; |
| errnum_assert (rc == 0, -rc); |
| nn_assert (nn_chunkref_size (&msg->sphdr) == sizeof (uint64_t)); |
| |
| /* Discard the header. */ |
| nn_chunkref_term (&msg->sphdr); |
| nn_chunkref_init (&msg->sphdr, 0); |
| |
| return 0; |
| } |
| |
| static int nn_bus_create (void *hint, struct nn_sockbase **sockbase) |
| { |
| struct nn_bus *self; |
| |
| self = nn_alloc (sizeof (struct nn_bus), "socket (bus)"); |
| alloc_assert (self); |
| nn_bus_init (self, &nn_bus_sockbase_vfptr, hint); |
| *sockbase = &self->xbus.sockbase; |
| |
| return 0; |
| } |
| |
| static struct nn_socktype nn_bus_socktype_struct = { |
| AF_SP, |
| NN_BUS, |
| 0, |
| nn_bus_create, |
| nn_xbus_ispeer, |
| NN_LIST_ITEM_INITIALIZER |
| }; |
| |
| struct nn_socktype *nn_bus_socktype = &nn_bus_socktype_struct; |
| |