]> git.tuebingen.mpg.de Git - paraslash.git/blobdiff - audiod.c
gttp_send: kill http_shutdown_clients_real()
[paraslash.git] / audiod.c
index 8f6f3560ee37cb6cbb927630bb583937d51693db..f653c4f7dad5997778aaf45613920b3f774813cd 100644 (file)
--- a/audiod.c
+++ b/audiod.c
@@ -105,7 +105,7 @@ static char *af_status, /* the audio format announced in server status */
        *socket_name, *hostname;
 static char *stat_item_values[NUM_STAT_ITEMS];
 static FILE *logfile;
-static const struct timeval restart_delay = {0, 300 * 1000};
+static const struct timeval restart_delay = {0, 200 * 1000};
 static struct audio_format_info afi[NUM_AUDIO_FORMATS];
 static struct timeval *now;
 
@@ -137,6 +137,8 @@ struct status_task {
        unsigned loaded;
        /** the associated task structure */
        struct task task;
+       /** do not restart client command until this time */
+       struct timeval restart_barrier;
 };
 static struct status_task status_task_struct, *stat_task = &status_task_struct;
 
@@ -168,10 +170,12 @@ struct audiod_command {
 static int com_grab(int, char *);
 static int com_cycle(int, int, char **);
 static int com_help(int, int, char **);
+static int com_kill(int, int, char **);
 static int com_off(int, int, char **);
 static int com_on(int, int, char **);
 static int com_sb(int, int, char **);
 static int com_stat(int, int, char **);
+static int com_tasks(int, int, char **);
 static int com_term(int, int, char **);
 static struct audiod_command cmds[] = {
 {
@@ -210,6 +214,16 @@ static struct audiod_command cmds[] = {
 "\n"
 "                              -- Beatles: Help\n"
 
+},
+{
+.name = "kill",
+.handler = com_kill,
+.description = "kill an active audiod task",
+.synopsis = "kill task_id [task_id ...]",
+.help =
+
+"call sched_unregister() and the event_handler of the given task(s)\n"
+
 },
 {
 .name = "off",
@@ -252,6 +266,16 @@ static struct audiod_command cmds[] = {
 
 "Dump given status items (all if none given) to stdout.\n"
 
+},
+{
+.name = "tasks",
+.handler = com_tasks,
+.description = "list current tasks",
+.synopsis = "tasks",
+.help =
+
+"print the list of task ids together with the status of each task\n"
+
 },
 {
 .name = "term",
@@ -484,8 +508,8 @@ static void close_receiver(int slot_num)
        a = &afi[s->format];
        PARA_NOTICE_LOG("closing %s receiver in slot %d (eof = %d)\n",
                audio_formats[s->format] , slot_num, s->receiver_node->eof);
-       if (!s->receiver_node->eof)
-               unregister_task(&s->receiver_node->task);
+//     if (!s->receiver_node->eof)
+//             unregister_task(&s->receiver_node->task);
        a->receiver->close(s->receiver_node);
        free(s->receiver_node);
        s->receiver_node = NULL;
@@ -562,7 +586,7 @@ static void close_stat_pipe(void)
        close(stat_task->fd);
        del_close_on_fork_list(stat_task->fd);
        stat_task->fd = -1;
-       kill_all_decoders();
+//     kill_all_decoders();
        for (i = 0; i < NUM_STAT_ITEMS; i++) {
                free(stat_item_values[i]);
                stat_item_values[i] = NULL;
@@ -605,6 +629,8 @@ int num_filters(int audio_format_num)
 static void filter_event_handler(struct task *t)
 {
        PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
+       struct filter_chain *fc = t->private_data;
+       fc->eof = 1;
        unregister_task(t);
 }
 
@@ -677,15 +703,10 @@ static struct filter_node *find_filter_node(int slot_num, int format, int filter
 static void wng_event_handler(struct task *t)
 {
        struct writer_node_group *wng = t->private_data;
-       int i;
 
+       PARA_INFO_LOG("%s\n", PARA_STRERROR(-t->ret));
+       wng->eof = 1;
        wng_unregister(wng);
-       FOR_EACH_SLOT(i) {
-               struct slot_info *s = &slot[i];
-               if (s->wng != wng)
-                       continue;
-               PARA_INFO_LOG("slot %d: %s\n", i, PARA_STRERROR(-t->ret));
-       }
 }
 
 static void open_writers(int slot_num)
@@ -718,7 +739,11 @@ static void open_writers(int slot_num)
                s->wng->writer_nodes[i].writer = a->writers[i];
                sprintf(s->wng->writer_nodes[i].task.status, "writer_node");
        }
-       ret = wng_open(s->wng); /* FIXME */
+       ret = wng_open(s->wng);
+       if (ret < 0) {
+               PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
+               return;
+       }
        s->wstime = *now;
        current_decoder = slot_num;
        activate_inactive_grab_clients(slot_num, s->format, &s->fc->filters);
@@ -726,9 +751,11 @@ static void open_writers(int slot_num)
 
 static void rn_event_handler(struct task *t)
 {
-//     struct receiver_node *rn = t->private_data;
+       struct receiver_node *rn = t->private_data;
+
        PARA_NOTICE_LOG("%s\n", PARA_STRERROR(-t->ret));
        unregister_task(t);
+       rn->eof = 1;
 }
 
 static void open_receiver(int format)
@@ -773,7 +800,7 @@ static int is_frozen(int format)
        return (tv_diff(now, &a->restart_barrier, NULL) > 0)? 0 : 1;
 }
 
-static void open_current_receiver(void)
+static void open_current_receiver(struct sched *s)
 {
        int i;
 
@@ -785,6 +812,13 @@ static void open_current_receiver(void)
        if (decoder_running(i) || is_frozen(i))
                return;
        open_receiver(i);
+       /*
+        * the receiver didn't get a chance to put his fd to the fd set.
+        * Make the upcoming select() return immediately to avoid a long
+        * timeout.
+        */
+       s->timeout.tv_sec = 0;
+       s->timeout.tv_usec = 1;
 }
 
 static void compute_time_diff(const struct timeval *status_time)
@@ -816,7 +850,7 @@ static void compute_time_diff(const struct timeval *status_time)
                count > 10? sign : sign * time_smooth, &diff,
                &tmp);
        sa_time_diff = tmp;
-       PARA_INFO_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
+       PARA_DEBUG_LOG("time diff (cur/avg): %s%lums/%s%lums\n",
                sign > 0? "+" : "-",
                tv2ms(&diff),
                sa_time_diff_sign ? "+" : "-",
@@ -919,15 +953,14 @@ static void audiod_pre_select(struct sched *s, __a_unused struct task *t)
 
        t->ret = 1;
        now = &s->now;
-       if (audiod_status != AUDIOD_ON)
+       if (audiod_status != AUDIOD_ON || !playing)
                kill_all_decoders();
        else if (playing)
-               open_current_receiver();
+               open_current_receiver(s);
        FOR_EACH_SLOT(i) {
                struct slot_info *s = &slot[i];
                struct audio_format_info *a;
 
-               try_to_close_slot(i);
                if (s->format < 0)
                        continue;
                a = &afi[s->format];
@@ -949,9 +982,13 @@ static void audiod_pre_select(struct sched *s, __a_unused struct task *t)
 
 static void audiod_post_select(struct sched *s, __a_unused struct task *t)
 {
-       /* only save away the current time for other users */
+       int i;
+
+       /* save away the current time for other users */
        now = &s->now;
        t->ret = 1;
+       FOR_EACH_SLOT(i)
+               try_to_close_slot(i);
 }
 
 static void init_audiod_task(struct task *t)
@@ -1222,6 +1259,33 @@ out:
        return ret;
 }
 
+static int com_tasks(int fd, __a_unused int argc, __a_unused char **argv)
+{
+       char *tl = get_task_list();
+       int ret = 1;
+       if (tl)
+               ret = client_write(fd, tl);
+       free(tl);
+       if (ret > 0)
+               close(fd);
+       return ret;
+}
+
+static int com_kill(int fd, int argc, char **argv)
+{
+       int i, ret = 1;
+       if (argc < 2)
+               return -E_AUDIOD_SYNTAX;
+       for (i = 1; i < argc; i++) {
+               ret = kill_task(argv[i]);
+               if (ret < 0)
+                       break;
+       }
+       if (ret > 0)
+               close(fd);
+       return ret;
+}
+
 static int com_stat(int fd, __a_unused int argc, __a_unused char **argv)
 {
        int i, ret;
@@ -1488,7 +1552,11 @@ static int open_stat_pipe(void)
 void signal_event_handler(struct task *t)
 {
        struct signal_task *st = t->private_data;
-       handle_signal(st->signum);
+
+       if (t->ret != -E_SIGNAL_CAUGHT)
+               PARA_ERROR_LOG("%s (ignored)\n", PARA_STRERROR(-t->ret));
+       else
+               handle_signal(st->signum);
 }
 
 void signal_pre_select(struct sched *s, struct task *t)
@@ -1551,13 +1619,28 @@ static void init_command_task(struct command_task *ct)
        sprintf(ct->task.status, "command task");
 }
 
+static void status_event_handler(__a_unused struct task *t)
+{
+       struct timeval delay = {1, 0};
+       int i;
+       struct status_task *st = t->private_data;
+
+       PARA_ERROR_LOG("%s\n", PARA_STRERROR(-t->ret));
+       close_stat_pipe();
+       /* avoid busy loop if server is down */
+       tv_add(now, &delay, &st->restart_barrier);
+       FOR_EACH_AUDIO_FORMAT(i)
+               afi[i].restart_barrier = st->restart_barrier;
+}
+
 static void status_pre_select(struct sched *s, struct task *t)
 {
        struct status_task *st = t->private_data;
        t->ret = 1;
        if (st->fd >= 0 && audiod_status == AUDIOD_OFF)
                close_stat_pipe();
-       if (st->fd < 0 && audiod_status != AUDIOD_OFF) {
+       if (st->fd < 0 && audiod_status != AUDIOD_OFF
+               && tv_diff(now, &st->restart_barrier, NULL) > 0) {
                st->fd = open_stat_pipe();
                st->loaded = 0;
                st->buf[0] = '\0';
@@ -1569,34 +1652,29 @@ static void status_pre_select(struct sched *s, struct task *t)
 static void status_post_select(struct sched *s, struct task *t)
 {
        struct status_task *st = t->private_data;
-       int ret;
 
        t->ret = 1;
        if (st->fd < 0 || !FD_ISSET(st->fd, &s->rfds))
                return;
-       ret = read(st->fd, st->buf + st->loaded,
-               STRINGSIZE - 1 - st->loaded);
-       if (ret <= 0) {
-               close_stat_pipe();
-               /* avoid busy loop if server is down */
-               while (sleep(1) > 0) /* FIXME */
-                       ; /* try again*/
-       } else {
-               st->buf[ret + st->loaded] = '\0';
-               st->loaded = for_each_line(st->buf, ret + st->loaded,
-                       &check_stat_line);
+       t->ret = read(st->fd, st->buf + st->loaded, STRINGSIZE - 1 - st->loaded);
+       if (t->ret <= 0) {
+               if (!t->ret)
+                       t->ret = -E_STATUS_EOF;
+               return;
        }
+       st->buf[t->ret + st->loaded] = '\0';
+       st->loaded = for_each_line(st->buf, t->ret + st->loaded,
+               &check_stat_line);
 }
 
 static void init_status_task(struct status_task *st)
 {
+       memset(st, 0, sizeof(struct status_task));
        st->task.pre_select = status_pre_select;
        st->task.post_select = status_post_select;
+       st->task.event_handler = status_event_handler;
        st->task.private_data = st;
-       st->task.flags = 0;
-       st->loaded = 0;
        st->fd = -1;
-       st->buf[0] = '\0';
        sprintf(st->task.status, "status task");
 }
 
@@ -1666,7 +1744,7 @@ int main(int argc, char *argv[])
        register_task(&cmd_task->task);
        register_task(&stat_task->task);
        register_task(audiod_task);
-       s.default_timeout.tv_sec = 0;
+       s.default_timeout.tv_sec = 3;
        s.default_timeout.tv_usec = 99 * 1000;
        ret = sched(&s);