X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;ds=sidebyside;f=include%2Favahi%2Fsimple-watch.h;fp=include%2Favahi%2Fsimple-watch.h;h=108cadf5062d8c2aee6cfff20f9ff01b3a18bceb;hb=37d19f15523b6fe4d1fef2329abe421221b3d4b3;hp=0000000000000000000000000000000000000000;hpb=e8d28c50c6d3a73d1a6f514095304bfe0973ff2a;p=catta diff --git a/include/avahi/simple-watch.h b/include/avahi/simple-watch.h new file mode 100644 index 0000000..108cadf --- /dev/null +++ b/include/avahi/simple-watch.h @@ -0,0 +1,85 @@ +#ifndef foosimplewatchhfoo +#define foosimplewatchhfoo + +/*** + This file is part of avahi. + + avahi is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + avahi is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General + Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with avahi; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +/** \file simple-watch.h Simple poll() based main loop implementation */ + +#include +#include +#include + +AVAHI_C_DECL_BEGIN + +/** A main loop object. Main loops of this type aren't very flexible + * since they only support a single wakeup type. Nevertheless it + * should suffice for small test and example applications. */ +typedef struct AvahiSimplePoll AvahiSimplePoll; + +/** Create a new main loop object */ +AvahiSimplePoll *avahi_simple_poll_new(void); + +/** Free a main loop object */ +void avahi_simple_poll_free(AvahiSimplePoll *s); + +/** Return the abstracted poll API object for this main loop + * object. The is will return the same pointer each time it is + * called. */ +const AvahiPoll* avahi_simple_poll_get(AvahiSimplePoll *s); + +/** Run a single main loop iteration of this main loop. If sleep_time +is < 0 this will block until any of the registered events happens, +then it will execute the attached callback function. If sleep_time is +0 the routine just checks if any event is pending. If yes the attached +callback function is called, otherwise the function returns +immediately. If sleep_time > 0 the function will block for at most the +specified time in msecs. Returns -1 on error, 0 on success and 1 if a +quit request has been scheduled. Usually this function should be called +in a loop until it returns a non-zero value*/ +int avahi_simple_poll_iterate(AvahiSimplePoll *s, int sleep_time); + +/** Request that the main loop quits. If this is called the next + call to avahi_simple_poll_iterate() will return 1 */ +void avahi_simple_poll_quit(AvahiSimplePoll *s); + +/** Prototype for a poll() type function */ +typedef int (*AvahiPollFunc)(struct pollfd *ufds, unsigned int nfds, int timeout, void *userdata); + +/** Replace the internally used poll() function. By default the system's poll() will be used */ +void avahi_simple_poll_set_func(AvahiSimplePoll *s, AvahiPollFunc func, void *userdata); + +/** The first stage of avahi_simple_poll_iterate(), use this function only if you know what you do */ +int avahi_simple_poll_prepare(AvahiSimplePoll *s, int timeout); + +/** The second stage of avahi_simple_poll_iterate(), use this function only if you know what you do */ +int avahi_simple_poll_run(AvahiSimplePoll *s); + +/** The third and final stage of avahi_simple_poll_iterate(), use this function only if you know what you do */ +int avahi_simple_poll_dispatch(AvahiSimplePoll *s); + +/** Call avahi_simple_poll_iterate() in a loop and return if it returns non-zero */ +int avahi_simple_poll_loop(AvahiSimplePoll *s); + +/** Wakeup the main loop. (for threaded environments) */ +void avahi_simple_poll_wakeup(AvahiSimplePoll *s); + +AVAHI_C_DECL_END + +#endif