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028aa734f8
This should make it unlikely that we loop on SIGHUP indefinitely. Also, this makes it possible for callbacks not to process all events and still not busy loop.
88 lines
3.4 KiB
C
88 lines
3.4 KiB
C
#ifndef fooiochannelhfoo
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#define fooiochannelhfoo
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/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifndef PACKAGE
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#error "Please include config.h before including this file!"
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#endif
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#include <sys/types.h>
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#include <pulse/mainloop-api.h>
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#include <pulsecore/creds.h>
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#include <pulsecore/macro.h>
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/* A wrapper around UNIX file descriptors for attaching them to the a
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main event loop. Everytime new data may be read or be written to
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the channel a callback function is called. It is safe to destroy
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the calling iochannel object from the callback */
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typedef struct pa_iochannel pa_iochannel;
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/* Create a new IO channel for the specified file descriptors for
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input resp. output. It is safe to pass the same file descriptor for
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both parameters (in case of full-duplex channels). For a simplex
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channel specify -1 for the other direction. */
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pa_iochannel* pa_iochannel_new(pa_mainloop_api*m, int ifd, int ofd);
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void pa_iochannel_free(pa_iochannel*io);
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ssize_t pa_iochannel_write(pa_iochannel*io, const void*data, size_t l);
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ssize_t pa_iochannel_read(pa_iochannel*io, void*data, size_t l);
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#ifdef HAVE_CREDS
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pa_bool_t pa_iochannel_creds_supported(pa_iochannel *io);
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int pa_iochannel_creds_enable(pa_iochannel *io);
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ssize_t pa_iochannel_write_with_creds(pa_iochannel*io, const void*data, size_t l, const pa_creds *ucred);
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ssize_t pa_iochannel_read_with_creds(pa_iochannel*io, void*data, size_t l, pa_creds *ucred, pa_bool_t *creds_valid);
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#endif
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pa_bool_t pa_iochannel_is_readable(pa_iochannel*io);
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pa_bool_t pa_iochannel_is_writable(pa_iochannel*io);
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pa_bool_t pa_iochannel_is_hungup(pa_iochannel*io);
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/* Don't close the file descirptors when the io channel is freed. By
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* default the file descriptors are closed. */
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void pa_iochannel_set_noclose(pa_iochannel*io, pa_bool_t b);
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/* Set the callback function that is called whenever data becomes available for read or write */
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typedef void (*pa_iochannel_cb_t)(pa_iochannel*io, void *userdata);
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void pa_iochannel_set_callback(pa_iochannel*io, pa_iochannel_cb_t callback, void *userdata);
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/* In case the file descriptor is a socket, return a pretty-printed string in *s which describes the peer connected */
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void pa_iochannel_socket_peer_to_string(pa_iochannel*io, char*s, size_t l);
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/* Use setsockopt() to tune the recieve and send buffers of TCP sockets */
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int pa_iochannel_socket_set_rcvbuf(pa_iochannel*io, size_t l);
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int pa_iochannel_socket_set_sndbuf(pa_iochannel*io, size_t l);
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pa_bool_t pa_iochannel_socket_is_local(pa_iochannel *io);
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pa_mainloop_api* pa_iochannel_get_mainloop_api(pa_iochannel *io);
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int pa_iochannel_get_recv_fd(pa_iochannel *io);
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int pa_iochannel_get_send_fd(pa_iochannel *io);
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#endif
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