diff options
Diffstat (limited to 'src/event_pipe.c')
| -rw-r--r-- | src/event_pipe.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/src/event_pipe.c b/src/event_pipe.c deleted file mode 100644 index d5c3b956..00000000 --- a/src/event_pipe.c +++ /dev/null @@ -1,164 +0,0 @@ -/* - * Copyright (C) 2003-2011 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "event_pipe.h" -#include "fd_util.h" -#include "mpd_error.h" - -#include <stdbool.h> -#include <assert.h> -#include <glib.h> -#include <string.h> -#include <errno.h> -#include <sys/types.h> -#include <unistd.h> - -#ifdef WIN32 -/* for _O_BINARY */ -#include <fcntl.h> -#endif - -#undef G_LOG_DOMAIN -#define G_LOG_DOMAIN "event_pipe" - -static int event_pipe[2]; -static GIOChannel *event_channel; -static guint event_pipe_source_id; -static GMutex *event_pipe_mutex; -static bool pipe_events[PIPE_EVENT_MAX]; -static event_pipe_callback_t event_pipe_callbacks[PIPE_EVENT_MAX]; - -/** - * Invoke the callback for a certain event. - */ -static void -event_pipe_invoke(enum pipe_event event) -{ - assert((unsigned)event < PIPE_EVENT_MAX); - assert(event_pipe_callbacks[event] != NULL); - - event_pipe_callbacks[event](); -} - -static gboolean -main_notify_event(G_GNUC_UNUSED GIOChannel *source, - G_GNUC_UNUSED GIOCondition condition, - G_GNUC_UNUSED gpointer data) -{ - char buffer[256]; - gsize bytes_read; - GError *error = NULL; - GIOStatus status = g_io_channel_read_chars(event_channel, - buffer, sizeof(buffer), - &bytes_read, &error); - if (status == G_IO_STATUS_ERROR) - MPD_ERROR("error reading from pipe: %s", error->message); - - bool events[PIPE_EVENT_MAX]; - g_mutex_lock(event_pipe_mutex); - memcpy(events, pipe_events, sizeof(events)); - memset(pipe_events, 0, sizeof(pipe_events)); - g_mutex_unlock(event_pipe_mutex); - - for (unsigned i = 0; i < PIPE_EVENT_MAX; ++i) - if (events[i]) - /* invoke the event handler */ - event_pipe_invoke(i); - - return true; -} - -void event_pipe_init(void) -{ - GIOChannel *channel; - int ret; - - ret = pipe_cloexec_nonblock(event_pipe); - if (ret < 0) - MPD_ERROR("Couldn't open pipe: %s", strerror(errno)); - -#ifndef G_OS_WIN32 - channel = g_io_channel_unix_new(event_pipe[0]); -#else - channel = g_io_channel_win32_new_fd(event_pipe[0]); -#endif - g_io_channel_set_encoding(channel, NULL, NULL); - g_io_channel_set_buffered(channel, false); - - event_pipe_source_id = g_io_add_watch(channel, G_IO_IN, - main_notify_event, NULL); - - event_channel = channel; - - event_pipe_mutex = g_mutex_new(); -} - -void event_pipe_deinit(void) -{ - g_mutex_free(event_pipe_mutex); - - g_source_remove(event_pipe_source_id); - g_io_channel_unref(event_channel); - -#ifndef WIN32 - /* By some strange reason this call hangs on Win32 */ - close(event_pipe[0]); -#endif - close(event_pipe[1]); -} - -void -event_pipe_register(enum pipe_event event, event_pipe_callback_t callback) -{ - assert((unsigned)event < PIPE_EVENT_MAX); - assert(event_pipe_callbacks[event] == NULL); - - event_pipe_callbacks[event] = callback; -} - -void event_pipe_emit(enum pipe_event event) -{ - ssize_t w; - - assert((unsigned)event < PIPE_EVENT_MAX); - - g_mutex_lock(event_pipe_mutex); - if (pipe_events[event]) { - /* already set: don't write */ - g_mutex_unlock(event_pipe_mutex); - return; - } - - pipe_events[event] = true; - g_mutex_unlock(event_pipe_mutex); - - w = write(event_pipe[1], "", 1); - if (w < 0 && errno != EAGAIN && errno != EINTR) - MPD_ERROR("error writing to pipe: %s", strerror(errno)); -} - -void event_pipe_emit_fast(enum pipe_event event) -{ - assert((unsigned)event < PIPE_EVENT_MAX); - - pipe_events[event] = true; - - G_GNUC_UNUSED ssize_t nbytes = write(event_pipe[1], "", 1); -} |