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218 lines
7.0 KiB
218 lines
7.0 KiB
/*
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Copyright (c) 2012-2013 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 "../transport.h"
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#include "../protocol.h"
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#include "sock.h"
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#include "ep.h"
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#include "../utils/err.h"
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#include "../utils/fast.h"
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/* Internal pipe states. */
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#define NN_PIPEBASE_STATE_IDLE 1
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#define NN_PIPEBASE_STATE_ACTIVE 2
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#define NN_PIPEBASE_STATE_FAILED 3
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#define NN_PIPEBASE_INSTATE_DEACTIVATED 0
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#define NN_PIPEBASE_INSTATE_IDLE 1
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#define NN_PIPEBASE_INSTATE_RECEIVING 2
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#define NN_PIPEBASE_INSTATE_RECEIVED 3
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#define NN_PIPEBASE_INSTATE_ASYNC 4
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#define NN_PIPEBASE_OUTSTATE_DEACTIVATED 0
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#define NN_PIPEBASE_OUTSTATE_IDLE 1
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#define NN_PIPEBASE_OUTSTATE_SENDING 2
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#define NN_PIPEBASE_OUTSTATE_SENT 3
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#define NN_PIPEBASE_OUTSTATE_ASYNC 4
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void nn_pipebase_init(struct nn_pipebase *self,const struct nn_pipebase_vfptr *vfptr,struct nn_epbase *epbase)
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{
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nn_assert (epbase->ep->sock);
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nn_fsm_init(&self->fsm,NULL,NULL,0,self,&epbase->ep->sock->fsm);
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self->vfptr = vfptr;
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self->state = NN_PIPEBASE_STATE_IDLE;
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self->instate = NN_PIPEBASE_INSTATE_DEACTIVATED;
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self->outstate = NN_PIPEBASE_OUTSTATE_DEACTIVATED;
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self->sock = epbase->ep->sock;
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memcpy(&self->options,&epbase->ep->options,sizeof(struct nn_ep_options));
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nn_fsm_event_init(&self->in);
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nn_fsm_event_init(&self->out);
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PNACL_message("pipebase_init vfptr.%p recv.%p rcvprio.%d\n",vfptr,vfptr->recv,self->options.rcvprio);
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}
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void nn_pipebase_term (struct nn_pipebase *self)
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{
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nn_assert_state (self, NN_PIPEBASE_STATE_IDLE);
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nn_fsm_event_term (&self->out);
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nn_fsm_event_term (&self->in);
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nn_fsm_term (&self->fsm);
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}
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int nn_pipebase_start (struct nn_pipebase *self)
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{
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int rc;
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nn_assert_state (self,NN_PIPEBASE_STATE_IDLE);
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self->state = NN_PIPEBASE_STATE_ACTIVE;
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self->instate = NN_PIPEBASE_INSTATE_ASYNC;
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self->outstate = NN_PIPEBASE_OUTSTATE_IDLE;
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rc = nn_sock_add(self->sock,(struct nn_pipe *)self);
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PNACL_message("nn_pipebase_start self.%p rc.%d\n",self,rc);
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if ( nn_slow(rc < 0) )
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{
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self->state = NN_PIPEBASE_STATE_FAILED;
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return rc;
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}
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if ( self->sock )
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nn_fsm_raise(&self->fsm,&self->out,NN_PIPE_OUT);
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return 0;
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}
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void nn_pipebase_stop(struct nn_pipebase *self)
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{
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if (self->state == NN_PIPEBASE_STATE_ACTIVE)
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nn_sock_rm (self->sock, (struct nn_pipe*) self);
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self->state = NN_PIPEBASE_STATE_IDLE;
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}
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void nn_pipebase_received(struct nn_pipebase *self)
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{
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PNACL_message("nn_pipebase_received\n");
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if ( nn_fast(self->instate == NN_PIPEBASE_INSTATE_RECEIVING) )
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{
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self->instate = NN_PIPEBASE_INSTATE_RECEIVED;
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return;
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}
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nn_assert (self->instate == NN_PIPEBASE_INSTATE_ASYNC);
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self->instate = NN_PIPEBASE_INSTATE_IDLE;
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if ( self->sock )
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nn_fsm_raise(&self->fsm,&self->in,NN_PIPE_IN);
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}
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void nn_pipebase_sent(struct nn_pipebase *self)
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{
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if ( nn_fast(self->outstate == NN_PIPEBASE_OUTSTATE_SENDING) )
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{
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self->outstate = NN_PIPEBASE_OUTSTATE_SENT;
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return;
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}
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nn_assert (self->outstate == NN_PIPEBASE_OUTSTATE_ASYNC);
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self->outstate = NN_PIPEBASE_OUTSTATE_IDLE;
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if ( self->sock )
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nn_fsm_raise(&self->fsm,&self->out,NN_PIPE_OUT);
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}
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void nn_pipebase_getopt(struct nn_pipebase *self, int level, int option,void *optval, size_t *optvallen)
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{
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int rc,intval;
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if ( level == NN_SOL_SOCKET )
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{
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switch (option)
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{
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/* Endpoint options */
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case NN_SNDPRIO:
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intval = self->options.sndprio;
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break;
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case NN_RCVPRIO:
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intval = self->options.rcvprio;
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break;
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case NN_IPV4ONLY:
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intval = self->options.ipv4only;
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break;
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/* Fallback to socket options */
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default:
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rc = nn_sock_getopt_inner(self->sock, level,option, optval, optvallen);
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errnum_assert (rc == 0, -rc);
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return;
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}
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memcpy (optval, &intval,*optvallen < sizeof (int) ? *optvallen : sizeof (int));
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*optvallen = sizeof (int);
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return;
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}
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rc = nn_sock_getopt_inner (self->sock, level, option, optval, optvallen);
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errnum_assert (rc == 0, -rc);
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}
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int nn_pipebase_ispeer(struct nn_pipebase *self,int socktype)
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{
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return nn_sock_ispeer (self->sock, socktype);
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}
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void nn_pipe_setdata(struct nn_pipe *self,void *data)
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{
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((struct nn_pipebase *)self)->data = data;
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}
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void *nn_pipe_getdata(struct nn_pipe *self)
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{
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return ((struct nn_pipebase *)self)->data;
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}
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int nn_pipe_send(struct nn_pipe *self,struct nn_msg *msg)
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{
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int rc;
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struct nn_pipebase *pipebase;
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pipebase = (struct nn_pipebase *)self;
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nn_assert (pipebase->outstate == NN_PIPEBASE_OUTSTATE_IDLE);
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pipebase->outstate = NN_PIPEBASE_OUTSTATE_SENDING;
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rc = pipebase->vfptr->send(pipebase,msg);
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errnum_assert (rc >= 0, -rc);
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if ( nn_fast(pipebase->outstate == NN_PIPEBASE_OUTSTATE_SENT) )
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{
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pipebase->outstate = NN_PIPEBASE_OUTSTATE_IDLE;
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return rc;
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}
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nn_assert(pipebase->outstate == NN_PIPEBASE_OUTSTATE_SENDING);
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pipebase->outstate = NN_PIPEBASE_OUTSTATE_ASYNC;
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return rc | NN_PIPEBASE_RELEASE;
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}
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int nn_pipe_recv(struct nn_pipe *self,struct nn_msg *msg)
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{
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int rc; struct nn_pipebase *pipebase;
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pipebase = (struct nn_pipebase*) self;
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nn_assert (pipebase->instate == NN_PIPEBASE_INSTATE_IDLE);
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pipebase->instate = NN_PIPEBASE_INSTATE_RECEIVING;
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PNACL_message("call pipebase recv\n");
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rc = pipebase->vfptr->recv (pipebase,msg);
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errnum_assert (rc >= 0, -rc);
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if ( nn_fast(pipebase->instate == NN_PIPEBASE_INSTATE_RECEIVED) )
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{
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pipebase->instate = NN_PIPEBASE_INSTATE_IDLE;
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return rc;
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}
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nn_assert(pipebase->instate == NN_PIPEBASE_INSTATE_RECEIVING);
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pipebase->instate = NN_PIPEBASE_INSTATE_ASYNC;
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return rc | NN_PIPEBASE_RELEASE;
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}
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void nn_pipe_getopt(struct nn_pipe *self,int level,int option,void *optval,size_t *optvallen)
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{
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struct nn_pipebase *pipebase;
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pipebase = (struct nn_pipebase *)self;
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nn_pipebase_getopt(pipebase,level,option,optval,optvallen);
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}
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