mirror of
https://github.com/gnif/LookingGlass.git
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aa9dbe654d
This allows us to build with libdecor enabled as the selection to use it is decided upon at runtime if the compositor `gnome-shell` is detected. If the libdecor development headers are installed, by default it will now be compiled in unless overridden by the user at compile time.
134 lines
3.1 KiB
C
134 lines
3.1 KiB
C
/**
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* Looking Glass
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* Copyright © 2017-2023 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "wayland.h"
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#include <stdbool.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/epoll.h>
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#include <wayland-client.h>
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#include "common/debug.h"
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#include "common/locking.h"
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bool waylandPollInit(void)
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{
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wlWm.epollFd = epoll_create1(EPOLL_CLOEXEC);
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if (wlWm.epollFd < 0)
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{
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DEBUG_ERROR("Failed to initialize epoll: %s", strerror(errno));
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return false;
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}
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wl_list_init(&wlWm.poll);
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wl_list_init(&wlWm.pollFree);
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LG_LOCK_INIT(wlWm.pollLock);
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LG_LOCK_INIT(wlWm.pollFreeLock);
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return wlWm.desktop->pollInit(wlWm.display);
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}
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void waylandWait(unsigned int time)
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{
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wlWm.desktop->pollWait(wlWm.display, wlWm.epollFd, time);
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INTERLOCKED_SECTION(wlWm.pollFreeLock,
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{
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struct WaylandPoll * node;
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struct WaylandPoll * temp;
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wl_list_for_each_safe(node, temp, &wlWm.pollFree, link)
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{
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wl_list_remove(&node->link);
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free(node);
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}
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});
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}
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static void waylandPollRemoveNode(struct WaylandPoll * node)
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{
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INTERLOCKED_SECTION(wlWm.pollLock,
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{
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wl_list_remove(&node->link);
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});
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}
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bool waylandPollRegister(int fd, WaylandPollCallback callback, void * opaque, uint32_t events)
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{
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struct WaylandPoll * node = malloc(sizeof(*node));
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if (!node)
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return false;
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node->fd = fd;
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node->removed = false;
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node->callback = callback;
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node->opaque = opaque;
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INTERLOCKED_SECTION(wlWm.pollLock,
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{
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wl_list_insert(&wlWm.poll, &node->link);
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});
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if (epoll_ctl(wlWm.epollFd, EPOLL_CTL_ADD, fd, &(struct epoll_event) {
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.events = events,
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.data = (epoll_data_t) { .ptr = node },
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}) < 0)
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{
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waylandPollRemoveNode(node);
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free(node);
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return false;
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}
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return true;
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}
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bool waylandPollUnregister(int fd)
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{
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struct WaylandPoll * node = NULL;
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INTERLOCKED_SECTION(wlWm.pollLock,
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{
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wl_list_for_each(node, &wlWm.poll, link)
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{
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if (node->fd == fd)
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break;
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}
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});
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if (!node)
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{
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DEBUG_ERROR("Attempt to unregister a fd that was not registered: %d", fd);
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return false;
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}
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node->removed = true;
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if (epoll_ctl(wlWm.epollFd, EPOLL_CTL_DEL, fd, NULL) < 0)
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{
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DEBUG_ERROR("Failed to unregistered from epoll: %s", strerror(errno));
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return false;
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}
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waylandPollRemoveNode(node);
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INTERLOCKED_SECTION(wlWm.pollFreeLock,
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{
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wl_list_insert(&wlWm.pollFree, &node->link);
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});
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return true;
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}
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