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143 lines
3.9 KiB
143 lines
3.9 KiB
/*
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Copyright (c) 2013 Martin Sustrik All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom
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the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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IN THE SOFTWARE.
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*/
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#include "bus.h"
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#include "xbus.h"
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#include "../../nn.h"
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#include "../../bus.h"
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#include "../../utils/cont.h"
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#include "../../utils/alloc.h"
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#include "../../utils/err.h"
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#include "../../utils/list.h"
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struct nn_bus {
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struct nn_xbus xbus;
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};
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/* Private functions. */
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static void nn_bus_init (struct nn_bus *self,
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const struct nn_sockbase_vfptr *vfptr, void *hint);
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static void nn_bus_term (struct nn_bus *self);
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/* Implementation of nn_sockbase's virtual functions. */
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static void nn_bus_destroy (struct nn_sockbase *self);
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static int nn_bus_send (struct nn_sockbase *self, struct nn_msg *msg);
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static int nn_bus_recv (struct nn_sockbase *self, struct nn_msg *msg);
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static const struct nn_sockbase_vfptr nn_bus_sockbase_vfptr = {
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NULL,
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nn_bus_destroy,
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nn_xbus_add,
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nn_xbus_rm,
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nn_xbus_in,
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nn_xbus_out,
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nn_xbus_events,
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nn_bus_send,
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nn_bus_recv,
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nn_xbus_setopt,
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nn_xbus_getopt
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};
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static void nn_bus_init (struct nn_bus *self,
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const struct nn_sockbase_vfptr *vfptr, void *hint)
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{
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nn_xbus_init (&self->xbus, vfptr, hint);
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}
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static void nn_bus_term (struct nn_bus *self)
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{
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nn_xbus_term (&self->xbus);
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}
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static void nn_bus_destroy (struct nn_sockbase *self)
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{
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struct nn_bus *bus;
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bus = nn_cont (self, struct nn_bus, xbus.sockbase);
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nn_bus_term (bus);
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nn_free (bus);
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}
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static int nn_bus_send (struct nn_sockbase *self, struct nn_msg *msg)
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{
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int rc;
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struct nn_bus *bus;
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bus = nn_cont (self, struct nn_bus, xbus.sockbase);
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/* Check for malformed messages. */
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if (nn_chunkref_size (&msg->sphdr))
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return -EINVAL;
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/* Send the message. */
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rc = nn_xbus_send (&bus->xbus.sockbase, msg);
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errnum_assert (rc == 0, -rc);
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return 0;
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}
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static int nn_bus_recv (struct nn_sockbase *self, struct nn_msg *msg)
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{
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int rc;
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struct nn_bus *bus;
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bus = nn_cont (self, struct nn_bus, xbus.sockbase);
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/* Get next message. */
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rc = nn_xbus_recv (&bus->xbus.sockbase, msg);
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if (nn_slow (rc == -EAGAIN))
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return -EAGAIN;
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errnum_assert (rc == 0, -rc);
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nn_assert (nn_chunkref_size (&msg->sphdr) == sizeof (uint64_t));
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/* Discard the header. */
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nn_chunkref_term (&msg->sphdr);
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nn_chunkref_init (&msg->sphdr, 0);
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return 0;
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}
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static int nn_bus_create (void *hint, struct nn_sockbase **sockbase)
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{
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struct nn_bus *self;
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self = nn_alloc (sizeof (struct nn_bus), "socket (bus)");
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alloc_assert (self);
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nn_bus_init (self, &nn_bus_sockbase_vfptr, hint);
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*sockbase = &self->xbus.sockbase;
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return 0;
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}
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static struct nn_socktype nn_bus_socktype_struct = {
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AF_SP,
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NN_BUS,
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0,
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nn_bus_create,
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nn_xbus_ispeer,
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NN_LIST_ITEM_INITIALIZER
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};
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struct nn_socktype *nn_bus_socktype = &nn_bus_socktype_struct;
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