1gensio_acc_accept_s(3)     Library Functions Manual     gensio_acc_accept_s(3)
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NAME

6       gensio_acc_set_sync,  gensio_acc_accept_s,  gensio_acc_accept_s_intr  -
7       Synchronous I/O operations on a gensio accepter
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SYNOPSIS

10       #include <gensio/gensio.h>
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12       int gensio_acc_set_sync(struct gensio_accepter *acc);
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14       int gensio_acc_accept_s(struct gensio_accepter *acc,
15                           struct gensio_time *timeout,
16                           struct gensio **new_io);
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18       int gensio_acc_accept_s_intr(struct gensio_accepter *acc,
19                           struct gensio_time *timeout,
20                           struct gensio **new_io);
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DESCRIPTION

23       Normal gensio accepter operation is asynchronous callback based.   This
24       serves  most  programs  fairly  well, especially if they need to handle
25       multiple accepts on the same or different accepters.
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27       But occasionally you need to do something synchronous with the  program
28       execution,  especially  if  you have a simple program that just accepts
29       one connection and then does something.
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31       gensio_acc set_sync sets up the gensio  accepter  for  synchronous  ac‐
32       cepts.  If you do this, the event callback that is currently registered
33       will no longer receive new connection events.  It *will* receive  other
34       callbacks.   You must call this before starting up the gensio accepter,
35       and once you call it the gensio accepter is in sync mode until you shut
36       it down.
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38       gensio_accept_s  Waits  for  an  incoming  connection on the gensio ac‐
39       cepter.  This function waits for the amount of time in timeout.   time‐
40       out is updated to the amount of time left to wait.  If timeout is NULL,
41       wait forever.  If no error is returned, the new incoming connection  is
42       returned in new_io.
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44       gensio_accept_s_intr is like gensio_accept_s, but it return immediately
45       if an signal interrupt occurs.  On systems without signals, this is the
46       same as gensio_accept_s.
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RETURN VALUES

49       Zero is returned on success, or a gensio error on failure.
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SEE ALSO

52       gensio_err(3), gensio_set_sync(3), gensio(5)
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56                                  27 Jan 2020           gensio_acc_accept_s(3)
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