static void
as_uv_wakeup(uv_async_t* wakeup)
{
// Read command pointers from queue.
as_event_loop* event_loop = wakeup->data;
as_uv_command cmd;
pthread_mutex_lock(&event_loop->lock);
while (as_queue_pop(&event_loop->queue, &cmd)) {
switch (cmd.type) {
case AS_UV_PROCESS_COMMAND:
as_event_command_execute_in_loop(cmd.ptr);
break;
case AS_UV_CLOSE_CONNECTION:
uv_close((uv_handle_t*)cmd.ptr, as_uv_connection_closed);
break;
case AS_UV_EXIT_LOOP:
as_event_close_loop(event_loop);
return;
}
}
pthread_mutex_unlock(&event_loop->lock);
}
static bool
as_uv_queue_close_connections(as_node* node, as_queue* conn_queue, as_queue* cmd_queue)
{
as_uv_command qcmd;
qcmd.type = AS_UV_CLOSE_CONNECTION;
as_event_connection* conn;
// Queue connection commands to event loops.
while (as_queue_pop(conn_queue, &conn)) {
qcmd.ptr = conn;
if (! as_queue_push(cmd_queue, &qcmd)) {
as_log_error("Failed to queue connection close");
return false;
}
// In this case, connection counts are decremented before the connection is closed.
// This is done because the node will be invalid when the deferred connection close occurs.
// Since node destroy always waits till there are no node references, all transactions that
// referenced this node should be completed by the time this code is executed.
as_event_decr_connection(node->cluster, conn_queue);
ck_pr_dec_32(&node->cluster->async_conn_pool);
}
return true;
}
static void
as_ev_close_connections(as_node* node, as_queue* conn_queue)
{
as_event_connection* conn;
// Queue connection commands to event loops.
while (as_queue_pop(conn_queue, &conn)) {
close(conn->fd);
cf_free(conn);
as_event_decr_connection(node->cluster, conn_queue);
ck_pr_dec_32(&node->cluster->async_conn_pool);
}
as_queue_destroy(conn_queue);
}
as_connection_status
as_event_get_connection(as_event_command* cmd)
{
as_queue* queue = &cmd->node->async_conn_qs[cmd->event_loop->index];
as_async_connection* conn;
// Find connection.
while (as_queue_pop(queue, &conn)) {
ck_pr_dec_32(&cmd->cluster->async_conn_pool);
// Verify that socket is active and receive buffer is empty.
int len = as_event_validate_connection(&conn->base);
if (len == 0) {
conn->cmd = cmd;
cmd->conn = (as_event_connection*)conn;
return AS_CONNECTION_FROM_POOL;
}
as_log_debug("Invalid async socket from pool: %d", len);
as_event_release_connection(cmd->cluster, &conn->base, queue);
}
// Create connection structure only when node connection count within queue limit.
if (as_queue_incr_total(queue)) {
ck_pr_inc_32(&cmd->cluster->async_conn_count);
conn = cf_malloc(sizeof(as_async_connection));
conn->base.pipeline = false;
conn->cmd = cmd;
cmd->conn = &conn->base;
return AS_CONNECTION_NEW;
}
else {
as_error err;
as_error_update(&err, AEROSPIKE_ERR_NO_MORE_CONNECTIONS,
"Max node/event loop %s async connections would be exceeded: %u",
cmd->node->name, queue->capacity);
as_event_stop_timer(cmd);
as_event_error_callback(cmd, &err);
return AS_CONNECTION_TOO_MANY;
}
}
static void
as_ev_wakeup(struct ev_loop* loop, ev_async* wakeup, int revents)
{
// Read command pointers from queue.
as_event_loop* event_loop = wakeup->data;
void* cmd;
pthread_mutex_lock(&event_loop->lock);
while (as_queue_pop(&event_loop->queue, &cmd)) {
if (cmd) {
// Process new command.
as_event_command_execute_in_loop(cmd);
}
else {
// Received stop signal.
as_event_close_loop(event_loop);
return;
}
}
pthread_mutex_unlock(&event_loop->lock);
}