a170f2a82b
This will help adding similar sources that work practically the same. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2628>
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
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* Copyright (C) 2010 Intel Corp.
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* Copyright (C) 2014 Jonas Ådahl
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* Copyright (C) 2016-2022 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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*/
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#include "config.h"
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#include "backends/meta-fd-source.h"
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typedef struct _MetaFdtSource
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{
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GSource source;
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GSourceFunc prepare;
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GSourceFunc dispatch;
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gpointer user_data;
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GPollFD poll_fd;
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} MetaFdSource;
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static gboolean
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meta_fd_source_prepare (GSource *source,
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int *timeout_ms)
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{
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MetaFdSource *fd_source = (MetaFdSource *) source;
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*timeout_ms = -1;
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return fd_source->prepare (fd_source->user_data);
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}
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static gboolean
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meta_fd_source_check (GSource *source)
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{
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MetaFdSource *fd_source = (MetaFdSource *) source;
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return !!(fd_source->poll_fd.revents & G_IO_IN);
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}
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static gboolean
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meta_fd_source_dispatch (GSource *source,
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GSourceFunc callback,
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gpointer user_data)
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{
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MetaFdSource *fd_source = (MetaFdSource *) source;
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return fd_source->dispatch (fd_source->user_data);
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}
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static void
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meta_fd_source_finalize (GSource *source)
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{
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MetaFdSource *fd_source = (MetaFdSource *) source;
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close (fd_source->poll_fd.fd);
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}
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static GSourceFuncs fd_source_funcs = {
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.prepare = meta_fd_source_prepare,
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.check = meta_fd_source_check,
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.dispatch = meta_fd_source_dispatch,
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.finalize = meta_fd_source_finalize,
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};
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GSource *
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meta_create_fd_source (int fd,
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const char *name,
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GSourceFunc prepare,
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GSourceFunc dispatch,
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gpointer user_data,
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GDestroyNotify notify)
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{
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GSource *source;
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MetaFdSource *fd_source;
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source = g_source_new (&fd_source_funcs, sizeof (MetaFdSource));
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g_source_set_name (source, name);
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fd_source = (MetaFdSource *) source;
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fd_source->poll_fd.fd = fd;
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fd_source->poll_fd.events = G_IO_IN;
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fd_source->prepare = prepare;
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fd_source->dispatch = dispatch;
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fd_source->user_data = user_data;
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g_source_set_callback (source, dispatch, user_data, notify);
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g_source_set_priority (source, G_PRIORITY_DEFAULT);
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g_source_add_poll (source, &fd_source->poll_fd);
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g_source_set_can_recurse (source, TRUE);
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return source;
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}
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