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-rw-r--r--src/database.c1
-rw-r--r--src/event_pipe.c71
-rw-r--r--src/event_pipe.h30
-rw-r--r--src/idle.c2
-rw-r--r--src/main.c20
-rw-r--r--src/player_thread.c6
-rw-r--r--src/update.c9
-rw-r--r--src/update.h2
8 files changed, 114 insertions, 27 deletions
diff --git a/src/database.c b/src/database.c
index c7acd8534..43ad5a9ab 100644
--- a/src/database.c
+++ b/src/database.c
@@ -59,7 +59,6 @@ db_init(void)
do {
event_pipe_wait();
- reap_update_task();
} while (isUpdatingDB());
stats.numberOfSongs = countSongsIn(NULL);
diff --git a/src/event_pipe.c b/src/event_pipe.c
index 6ae70565e..448903410 100644
--- a/src/event_pipe.c
+++ b/src/event_pipe.c
@@ -28,14 +28,45 @@
GThread *main_task;
static int event_pipe[2];
+static GMutex *event_pipe_mutex;
+static bool pipe_events[PIPE_EVENT_MAX];
+static event_pipe_callback_t event_pipe_callbacks[PIPE_EVENT_MAX];
-static void consume_pipe(void)
+/**
+ * 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_EVENT_SIGNAL);
+ assert(event_pipe_callbacks[event] != NULL);
+
+ event_pipe_callbacks[event]();
+}
+
+static bool consume_pipe(void)
{
char buffer[256];
ssize_t r = read(event_pipe[0], buffer, sizeof(buffer));
+ bool events[PIPE_EVENT_MAX];
if (r < 0 && errno != EAGAIN && errno != EINTR)
FATAL("error reading from pipe: %s\n", strerror(errno));
+
+ 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 (i != PIPE_EVENT_SIGNAL && events[i])
+ /* invoke the event handler; the SIGNAL event
+ has no handler, because it is handled by
+ the event_pipe_wait() caller */
+ event_pipe_invoke(i);
+
+ return events[PIPE_EVENT_SIGNAL];
}
static gboolean
@@ -44,7 +75,6 @@ main_notify_event(G_GNUC_UNUSED GIOChannel *source,
G_GNUC_UNUSED gpointer data)
{
consume_pipe();
- main_notify_triggered();
return true;
}
@@ -63,22 +93,55 @@ void event_pipe_init(void)
g_io_add_watch(channel, G_IO_IN, main_notify_event, NULL);
g_io_channel_unref(channel);
+ event_pipe_mutex = g_mutex_new();
+
main_task = g_thread_self();
}
void event_pipe_deinit(void)
{
+ g_mutex_free(event_pipe_mutex);
+
xclose(event_pipe[0]);
xclose(event_pipe[1]);
}
-void event_pipe_signal(void)
+void
+event_pipe_register(enum pipe_event event, event_pipe_callback_t callback)
{
- ssize_t w = write(event_pipe[1], "", 1);
+ assert(event != PIPE_EVENT_SIGNAL);
+ 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)
g_error("error writing to pipe: %s", strerror(errno));
}
+void event_pipe_signal(void)
+{
+ event_pipe_emit(PIPE_EVENT_SIGNAL);
+}
+
void event_pipe_wait(void)
{
consume_pipe();
diff --git a/src/event_pipe.h b/src/event_pipe.h
index 5ede0deee..3126df9cd 100644
--- a/src/event_pipe.h
+++ b/src/event_pipe.h
@@ -23,17 +23,41 @@
#include <glib.h>
+enum pipe_event {
+ /** the default event: the main thread is waiting for somebody,
+ and this event wakes up the main thread */
+ PIPE_EVENT_SIGNAL = 0,
+
+ /** database update was finished */
+ PIPE_EVENT_UPDATE,
+
+ /** during database update, a song was deleted */
+ PIPE_EVENT_DELETE,
+
+ /** an idle event was emitted */
+ PIPE_EVENT_IDLE,
+
+ /** must call syncPlayerAndPlaylist() */
+ PIPE_EVENT_PLAYLIST,
+
+ PIPE_EVENT_MAX
+};
+
+typedef void (*event_pipe_callback_t)(void);
+
extern GThread *main_task;
void event_pipe_init(void);
void event_pipe_deinit(void);
+void
+event_pipe_register(enum pipe_event event, event_pipe_callback_t callback);
+
+void event_pipe_emit(enum pipe_event event);
+
void event_pipe_signal(void);
void event_pipe_wait(void);
-void
-main_notify_triggered(void);
-
#endif /* MAIN_NOTIFY_H */
diff --git a/src/idle.c b/src/idle.c
index bc857723f..26c15c48b 100644
--- a/src/idle.c
+++ b/src/idle.c
@@ -66,7 +66,7 @@ idle_add(unsigned flags)
idle_flags |= flags;
g_mutex_unlock(idle_mutex);
- event_pipe_signal();
+ event_pipe_emit(PIPE_EVENT_IDLE);
}
unsigned
diff --git a/src/main.c b/src/main.c
index f7ab7f1ee..aec3e92e9 100644
--- a/src/main.c
+++ b/src/main.c
@@ -190,17 +190,15 @@ timer_save_state_file(G_GNUC_UNUSED gpointer data)
return true;
}
-void
-main_notify_triggered(void)
+/**
+ * event_pipe callback function for PIPE_EVENT_IDLE
+ */
+static void
+idle_event_emitted(void)
{
- unsigned flags;
-
- syncPlayerAndPlaylist();
- reap_update_task();
-
/* send "idle" notificaions to all subscribed
clients */
- flags = idle_get();
+ unsigned flags = idle_get();
if (flags != 0)
client_manager_idle_add(flags);
}
@@ -243,6 +241,10 @@ int main(int argc, char *argv[])
main_loop = g_main_loop_new(NULL, FALSE);
+ event_pipe_init();
+ event_pipe_register(PIPE_EVENT_IDLE, idle_event_emitted);
+ event_pipe_register(PIPE_EVENT_PLAYLIST, syncPlayerAndPlaylist);
+
path_global_init();
mapper_init();
initPermissions();
@@ -253,8 +255,6 @@ int main(int argc, char *argv[])
decoder_plugin_init_all();
update_global_init();
- event_pipe_init();
-
openDB(&options, argv[0]);
command_init();
diff --git a/src/player_thread.c b/src/player_thread.c
index 75419c9b9..5b2130669 100644
--- a/src/player_thread.c
+++ b/src/player_thread.c
@@ -90,7 +90,7 @@ static void player_stop_decoder(void)
{
dc_stop(&pc.notify);
pc.state = PLAYER_STATE_STOP;
- event_pipe_signal();
+ event_pipe_emit(PIPE_EVENT_PLAYLIST);
}
static int player_wait_for_decoder(struct player *player)
@@ -369,7 +369,7 @@ static void do_play(void)
request the next song from the playlist */
pc.next_song = NULL;
- event_pipe_signal();
+ event_pipe_emit(PIPE_EVENT_PLAYLIST);
}
if (decoder_is_idle() && player.queued) {
@@ -476,7 +476,7 @@ static void do_play(void)
if (player_wait_for_decoder(&player) < 0)
return;
- event_pipe_signal();
+ event_pipe_emit(PIPE_EVENT_PLAYLIST);
} else if (decoder_is_idle()) {
break;
} else {
diff --git a/src/update.c b/src/update.c
index 438cd66a8..29d8844b1 100644
--- a/src/update.c
+++ b/src/update.c
@@ -98,7 +98,7 @@ delete_song(struct directory *dir, struct song *del)
cond_enter(&delete_cond);
assert(!delete);
delete = del;
- event_pipe_signal();
+ event_pipe_emit(PIPE_EVENT_DELETE);
do { cond_wait(&delete_cond); } while (delete);
cond_leave(&delete_cond);
@@ -603,7 +603,7 @@ static void * update_task(void *_path)
if (modified)
db_save();
progress = UPDATE_PROGRESS_DONE;
- event_pipe_signal();
+ event_pipe_emit(PIPE_EVENT_UPDATE);
return NULL;
}
@@ -646,7 +646,7 @@ directory_update_init(char *path)
return update_task_id;
}
-void reap_update_task(void)
+static void reap_update_task(void)
{
assert(g_thread_self() == main_task);
@@ -693,6 +693,9 @@ void update_global_init(void)
DEFAULT_FOLLOW_OUTSIDE_SYMLINKS);
cond_init(&delete_cond);
+
+ event_pipe_register(PIPE_EVENT_DELETE, reap_update_task);
+ event_pipe_register(PIPE_EVENT_UPDATE, reap_update_task);
}
void update_global_finish(void)
diff --git a/src/update.h b/src/update.h
index b43ae4c67..1c8c19ce8 100644
--- a/src/update.h
+++ b/src/update.h
@@ -35,6 +35,4 @@ isUpdatingDB(void);
unsigned
directory_update_init(char *path);
-void reap_update_task(void);
-
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 12:05:30 +0000