static gpointer
g_thread_pool_wait_for_new_task (GRealThreadPool *pool)
{
gpointer task = NULL;
if (pool->running || (!pool->immediate &&
g_async_queue_length_unlocked (pool->queue) > 0))
{
/* This thread pool is still active. */
if (pool->num_threads > pool->max_threads && pool->max_threads != -1)
{
/* This is a superfluous thread, so it goes to the global pool. */
DEBUG_MSG (("superfluous thread %p in pool %p.",
g_thread_self (), pool));
}
else if (pool->pool.exclusive)
{
/* Exclusive threads stay attached to the pool. */
task = g_async_queue_pop_unlocked (pool->queue);
DEBUG_MSG (("thread %p in exclusive pool %p waits for task "
"(%d running, %d unprocessed).",
g_thread_self (), pool, pool->num_threads,
g_async_queue_length_unlocked (pool->queue)));
}
else
{
/* A thread will wait for new tasks for at most 1/2
* second before going to the global pool.
*/
GTimeVal end_time;
g_get_current_time (&end_time);
g_time_val_add (&end_time, G_USEC_PER_SEC / 2); /* 1/2 second */
DEBUG_MSG (("thread %p in pool %p waits for up to a 1/2 second for task "
"(%d running, %d unprocessed).",
g_thread_self (), pool, pool->num_threads,
g_async_queue_length_unlocked (pool->queue)));
task = g_async_queue_timed_pop_unlocked (pool->queue, &end_time);
}
}
else
{
/* This thread pool is inactive, it will no longer process tasks. */
DEBUG_MSG (("pool %p not active, thread %p will go to global pool "
"(running: %s, immediate: %s, len: %d).",
pool, g_thread_self (),
pool->running ? "true" : "false",
pool->immediate ? "true" : "false",
g_async_queue_length_unlocked (pool->queue)));
}
return task;
}
static gpointer
iris_queue_real_timed_pop_or_close (IrisQueue *queue,
GTimeVal *timeout)
{
gpointer item;
g_async_queue_lock (queue->priv->q);
item = g_async_queue_timed_pop_unlocked (queue->priv->q, timeout);
if (g_atomic_int_get (&queue->priv->open) == FALSE)
item = handle_close_token_ul (queue, item);
else if (item == NULL)
close_ul (queue);
g_async_queue_unlock (queue->priv->q);
return item;
}
static gpointer
iris_queue_real_timed_pop (IrisQueue *queue,
GTimeVal *timeout)
{
gpointer item;
g_async_queue_lock (queue->priv->q);
if (g_atomic_int_get (&queue->priv->open) == FALSE &&
g_async_queue_length_unlocked (queue->priv->q) <= 0) {
g_async_queue_unlock (queue->priv->q);
return NULL;
}
item = g_async_queue_timed_pop_unlocked (queue->priv->q, timeout);
if (g_atomic_int_get (&queue->priv->open) == FALSE)
item = handle_close_token_ul (queue, item);
g_async_queue_unlock (queue->priv->q);
return item;
}
