void chassis_event_handle(int G_GNUC_UNUSED event_fd, short G_GNUC_UNUSED events, void* user_data) {
chassis_event_thread_t* thread = user_data;
char ping[1];
if (read(thread->notify_receive_fd, ping, 1) != 1) g_log_dbproxy(g_error, "pipes - read error");
network_mysqld_con* client_con = g_async_queue_try_pop(thread->event_queue);
if (client_con != NULL) {
g_atomic_pointer_add(&(thread->thread_status_var.thread_stat[THREAD_STAT_EVENT_WAITING]), -1);
chassis_event_add_connection(NULL, thread, client_con);
network_mysqld_con_handle(-1, 0, client_con);
}
}
/**
* add a event asynchronously
*
* the event is added to the global event-queue and a fd-notification is sent allowing any
* of the event-threads to handle it
*
* @see network_mysqld_con_handle()
*/
void chassis_event_add(network_mysqld_con* client_con) { //���߳�ִ�У�ping�����̣߳�ʹ����ν���״̬��
chassis* chas = client_con->srv;
// choose a event thread
static guint last_thread = 1;
if (last_thread > chas->event_thread_count) last_thread = 1;
chassis_event_thread_t *thread = chas->threads->pdata[last_thread];
++last_thread;
if (TRACE_CON_STATUS(client_con->srv->log->log_trace_modules)) {
gchar *msg = g_strdup_printf("connect add to event thread(%d)'s async queue", last_thread - 1);
CON_MSG_HANDLE(g_message, client_con, msg);
g_free(msg);
}
g_async_queue_push(thread->event_queue, client_con);
g_atomic_pointer_add(&(thread->thread_status_var.thread_stat[THREAD_STAT_EVENT_WAITING]), 1);
if (write(thread->notify_send_fd, "", 1) != 1) g_log_dbproxy(g_error, "pipes - write error: %s", g_strerror(errno));
}
/**
* g_atomic_pointer_add:
* @atomic: a pointer to a #gpointer-sized value
* @val: the value to add
*
* Atomically adds @val to the value of @atomic.
*
* Think of this operation as an atomic version of
* <literal>{ tmp = *atomic; *@atomic += @val; return tmp; }</literal>
*
* This call acts as a full compiler and hardware memory barrier.
*
* Returns: the value of @atomic before the add, signed
*
* Since: 2.30
**/
gssize
(g_atomic_pointer_add) (volatile void *atomic,
gssize val)
{
return g_atomic_pointer_add ((volatile gpointer *) atomic, val);
}
static CajaOperationResult
caja_python_object_update_file_info (CajaInfoProvider *provider,
CajaFile *file,
GClosure *update_complete,
CajaOperationHandle **handle)
{
CajaPythonObject *object = (CajaPythonObject*)provider;
CajaOperationResult ret = CAJA_OPERATION_COMPLETE;
PyObject *py_ret = NULL;
PyGILState_STATE state = pyg_gil_state_ensure();
static volatile gssize handle_generator = 1;
debug_enter();
CHECK_OBJECT(object);
*handle = NULL;
if (PyObject_HasAttrString(object->instance, "update_file_info_full"))
{
PyObject *py_handle;
void *h;
/* Generate a new handle with a default value. */
do {
h = (CajaOperationHandle *) g_atomic_pointer_add (&handle_generator, 1);
} while (!h);
py_handle = caja_python_boxed_new (_PyCajaOperationHandle_Type,
h, FALSE);
py_ret = PyObject_CallMethod(object->instance,
METHOD_PREFIX "update_file_info_full", "(NNNN)",
pygobject_new((GObject*)provider),
py_handle,
pyg_boxed_new(G_TYPE_CLOSURE, update_complete, TRUE, TRUE),
pygobject_new((GObject*)file));
*handle = (void *) ((PyGBoxed *) py_handle)->boxed;
}
else if (PyObject_HasAttrString(object->instance, "update_file_info"))
{
py_ret = PyObject_CallMethod(object->instance,
METHOD_PREFIX METHOD_NAME, "(N)",
pygobject_new((GObject*)file));
}
else
{
goto beach;
}
HANDLE_RETVAL(py_ret);
if (!INT_CHECK(py_ret))
{
PyErr_SetString(PyExc_TypeError,
METHOD_NAME " must return None or a int");
goto beach;
}
ret = INT_ASLONG(py_ret);
if (!*handle && ret == CAJA_OPERATION_IN_PROGRESS)
ret = CAJA_OPERATION_FAILED;
beach:
free_pygobject_data(file, NULL);
Py_XDECREF(py_ret);
pyg_gil_state_release(state);
return ret;
}