void connection_initialize(void)
{
if (_initialized) return;
thread_spin_create (&_connection_lock);
thread_mutex_create(&move_clients_mutex);
thread_rwlock_create(&_source_shutdown_rwlock);
thread_cond_init(&global.shutdown_cond);
_con_queue = NULL;
_con_queue_tail = &_con_queue;
banned_ip.contents = NULL;
banned_ip.file_mtime = 0;
allowed_ip.contents = NULL;
allowed_ip.file_mtime = 0;
_connection_running = 1;
/* (XXX)xaiki: need a way to make it go away on shutdown, ok for now */
_connection_thread_id = thread_create ("Connection Thread", _connection_thread,
NULL, THREAD_DETACHED);
_connection_cond = thread_cond_create ();
_initialized = 1;
}
void connection_initialize(void)
{
if (_initialized) return;
thread_mutex_create(&_connection_mutex);
thread_mutex_create(&_queue_mutex);
thread_mutex_create(&move_clients_mutex);
thread_rwlock_create(&_source_shutdown_rwlock);
thread_cond_create(&global.shutdown_cond);
_initialized = 1;
}
/**
* Initialize the queue_t.
*/
int queue_create(queue_t **q,
unsigned int queue_capacity)
{
int rv;
queue_t *queue;
queue = (queue_t*)malloc(sizeof(queue_t));
*q = queue;
/* nested doesn't work ;( */
rv = thread_mutex_create(&queue->one_big_mutex,
THREAD_MUTEX_UNNESTED);
if (rv != 0) {
return rv;
}
rv = thread_cond_create(&queue->not_empty);
if (rv != 0) {
return rv;
}
rv = thread_cond_create(&queue->not_full);
if (rv != 0) {
return rv;
}
/* Set all the data in the queue to NULL */
queue->data = malloc(queue_capacity * sizeof(void*));
queue->bounds = queue_capacity;
queue->nelts = 0;
queue->in = 0;
queue->out = 0;
queue->terminated = 0;
queue->full_waiters = 0;
queue->empty_waiters = 0;
return 0;
}
struct runner *allocate_runner()
{
static int runner_id = 1;
struct runner *run = calloc (1,sizeof (struct runner));
if (run == NULL)
return NULL;
run->not_running = 1;
#ifdef USE_PIPES
pipe (run->fd);
#else
thread_cond_create (&run->data_available);
run->pending_tail = &run->pending;
#endif
run->id = runner_id++;
return run;
}
void connection_initialize(void)
{
if (_initialized) return;
thread_spin_create (&_connection_lock);
thread_mutex_create(&move_clients_mutex);
thread_rwlock_create(&_source_shutdown_rwlock);
thread_cond_create(&global.shutdown_cond);
_req_queue = NULL;
_req_queue_tail = &_req_queue;
_con_queue = NULL;
_con_queue_tail = &_con_queue;
banned_ip.contents = NULL;
banned_ip.file_mtime = 0;
allowed_ip.contents = NULL;
allowed_ip.file_mtime = 0;
_initialized = 1;
}
void stats_initialize()
{
_event_listeners = NULL;
/* set up global struct */
_stats.global_tree = avl_tree_new(_compare_stats, NULL);
_stats.source_tree = avl_tree_new(_compare_source_stats, NULL);
/* set up global mutex */
thread_mutex_create(&_stats_mutex);
/* set up event signaler */
thread_cond_create(&_event_signal_cond);
/* set up stats queues */
_global_event_queue = NULL;
thread_mutex_create(&_global_event_mutex);
/* fire off the stats thread */
_stats_running = 1;
_stats_thread_id = thread_create("Stats Thread", _stats_thread, NULL, THREAD_ATTACHED);
}
int main(void)
{
int rv;
thread_mutex_t *thread_mutex = NULL;
thread_cond_t *thread_cond = NULL;
thread_mutex_create(&thread_mutex,THREAD_MUTEX_DEFAULT);
thread_cond_create(&thread_cond);
rv = thread_cond_signal(thread_cond);
rv = thread_mutex_lock(thread_mutex);
rv = thread_cond_timedwait(thread_cond, thread_mutex, 10000);
printf("rv:%d\n",rv);
rv = thread_mutex_unlock(thread_mutex);
rv = thread_cond_broadcast(thread_cond);
rv = thread_mutex_lock(thread_mutex);
rv = thread_cond_timedwait(thread_cond, thread_mutex, 10000);
rv = thread_mutex_unlock(thread_mutex);
thread_cond_destroy(thread_cond);
thread_mutex_destroy(thread_mutex);
return 0;
}
void input_loop(void)
{
input_module_t *inmod=NULL;
instance_t *instance, *prev, *next;
queue_item *queued;
int shutdown = 0;
int current_module = 0;
int valid_stream = 1;
int inc_count;
int not_waiting_for_critical;
int foundmodule = 0;
thread_cond_create(&ices_config->queue_cond);
thread_cond_create(&ices_config->event_pending_cond);
thread_mutex_create(&ices_config->refcount_lock);
thread_mutex_create(&ices_config->flush_lock);
memset (&control, 0, sizeof (control));
while(ices_config->playlist_module && modules[current_module].open)
{
if(!strcmp(ices_config->playlist_module, modules[current_module].name))
{
foundmodule = 1;
inmod = modules[current_module].open(ices_config->module_params);
break;
}
current_module++;
}
if(!inmod)
{
if(foundmodule)
LOG_ERROR1("Couldn't initialise input module \"%s\"",
ices_config->playlist_module);
else
LOG_ERROR1("No input module named \"%s\" could be found",
ices_config->playlist_module);
return;
}
ices_config->inmod = inmod;
/* ok, basic config stuff done. Now, we want to start all our listening
* threads.
*/
instance = ices_config->instances;
while(instance)
{
stream_description *arg = calloc(1, sizeof(stream_description));
arg->stream = instance;
arg->input = inmod;
/*
if(instance->savefilename != NULL)
thread_create("savefile", savefile_stream, arg, 1);
*/
thread_create("stream", ices_instance_stream, arg, 1);
instance = instance->next;
}
/* treat as if a signal has arrived straight away */
signal_usr1_handler (0);
/* now we go into the main loop
* We shut down the main thread ONLY once all the instances
* have killed themselves.
*/
while(!shutdown)
{
ref_buffer *chunk = calloc(1, sizeof(ref_buffer));
buffer_queue *current;
int ret;
instance = ices_config->instances;
prev = NULL;
while(instance)
{
/* if an instance has died, get rid of it
** this should be replaced with something that tries to
** restart the instance, probably.
*/
if (instance->died)
{
LOG_DEBUG0("An instance died, removing it");
next = instance->next;
if (prev)
prev->next = next;
else
ices_config->instances = next;
/* Just in case, flush any existing buffers
* Locks shouldn't be needed, but lets be SURE */
thread_mutex_lock(&ices_config->flush_lock);
input_flush_queue(instance->queue, 0);
thread_mutex_unlock(&ices_config->flush_lock);
config_free_instance(instance);
free(instance);
instance = next;
continue;
}
prev = instance;
instance = instance->next;
}
instance = ices_config->instances;
if(!instance)
{
shutdown = 1;
free(chunk);
continue;
}
if(ices_config->shutdown) /* We've been signalled to shut down, but */
{ /* the instances haven't done so yet... */
timing_sleep(250); /* sleep for quarter of a second */
free(chunk);
continue;
}
/* If this is the first time through, set initial time. This should
* be done before the call to inmod->getdata() below, in order to
* properly keep time if this input module blocks.
*/
if (control.starttime == 0)
control.starttime = timing_get_time();
/* get a chunk of data from the input module */
ret = inmod->getdata(inmod->internal, chunk);
/* input module signalled non-fatal error. Skip this chunk */
if(ret==0)
{
free(chunk);
continue;
}
/* Input module signalled fatal error, shut down - nothing we can do
* from here */
if(ret < 0)
{
ices_config->shutdown = 1;
thread_cond_broadcast(&ices_config->queue_cond);
free(chunk);
continue;
}
if(chunk->critical)
valid_stream = 1;
if(ret < 0) {
/* Tell the input module to go to the next track, hopefully allowing
* resync. */
ices_config->inmod->handle_event(ices_config->inmod,
EVENT_NEXTTRACK,NULL);
valid_stream = 0;
}
inc_count = 0;
not_waiting_for_critical = 0;
if(valid_stream)
{
while(instance)
{
if(instance->wait_for_critical && !chunk->critical)
{
instance = instance->next;
continue;
}
not_waiting_for_critical = 1;
if(instance->skip)
{
instance = instance->next;
continue;
}
queued = malloc(sizeof(queue_item));
queued->buf = chunk;
current = instance->queue;
inc_count++;
thread_mutex_lock(¤t->lock);
if(current->head == NULL)
{
current->head = current->tail = queued;
current->head->next = current->tail->next = NULL;
}
else
{
current->tail->next = queued;
queued->next = NULL;
current->tail = queued;
}
current->length++;
thread_mutex_unlock(¤t->lock);
instance = instance->next;
}
}
/* If everything is waiting for a critical buffer, force one
* early. (This will take effect on the next pass through)
*/
if(valid_stream && !not_waiting_for_critical) {
ices_config->inmod->handle_event(ices_config->inmod,
EVENT_NEXTTRACK,NULL);
instance = ices_config->instances;
while(instance) {
thread_mutex_lock(&ices_config->flush_lock);
input_flush_queue(instance->queue, 0);
instance->wait_for_critical = 0;
thread_mutex_unlock(&ices_config->flush_lock);
instance = instance->next;
}
}
/* Make sure we don't end up with a 0-refcount buffer that
* will never hit any of the free points. (this happens
* if all threads are set to skip, for example).
*/
thread_mutex_lock(&ices_config->refcount_lock);
chunk->count += inc_count;
if(!chunk->count)
{
free(chunk->buf);
free(chunk);
}
thread_mutex_unlock(&ices_config->refcount_lock);
if(valid_stream) {
/* wake up the instances */
thread_cond_broadcast(&ices_config->queue_cond);
}
}
LOG_INFO0 ("All instances removed, shutting down...");
ices_config->shutdown = 1;
thread_cond_broadcast(&ices_config->event_pending_cond);
timing_sleep(250); /* sleep for quarter of a second */
thread_cond_destroy(&ices_config->queue_cond);
thread_cond_destroy(&ices_config->event_pending_cond);
thread_mutex_destroy(&ices_config->flush_lock);
thread_mutex_destroy(&ices_config->refcount_lock);
inmod->handle_event(inmod, EVENT_SHUTDOWN, NULL);
return;
}
