1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright © 2009 Codethink Limited
4 * Copyright © 2009 Red Hat, Inc
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as published
8 * by the Free Software Foundation; either version 2 of the licence or (at
9 * your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General
17 * Public License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
19 * Boston, MA 02111-1307, USA.
21 * Authors: Ryan Lortie <desrt@desrt.ca>
22 * Alexander Larsson <alexl@redhat.com>
26 * SECTION:gthreadedsocketservice
27 * @title: GThreadedSocketService
28 * @short_description: A threaded GSocketService
29 * @see_also: #GSocketService.
31 * A #GThreadedSocketService is a simple subclass of #GSocketService
32 * that handles incoming connections by creating a worker thread and
33 * dispatching the connection to it by emitting the
34 * #GThreadedSocketService::run signal in the new thread.
36 * The signal handler may perform blocking IO and need not return
37 * until the connection is closed.
39 * The service is implemented using a thread pool, so there is a
40 * limited amount of threads available to serve incoming requests.
41 * The service automatically stops the #GSocketService from accepting
42 * new connections when all threads are busy.
44 * As with #GSocketService, you may connect to #GThreadedSocketService::run,
45 * or subclass and override the default handler.
49 #include "gsocketconnection.h"
50 #include "gthreadedsocketservice.h"
53 struct _GThreadedSocketServicePrivate
55 GThreadPool
*thread_pool
;
60 static guint g_threaded_socket_service_run_signal
;
62 G_DEFINE_TYPE_WITH_PRIVATE (GThreadedSocketService
,
63 g_threaded_socket_service
,
64 G_TYPE_SOCKET_SERVICE
)
72 G_LOCK_DEFINE_STATIC(job_count
);
76 GThreadedSocketService
*service
;
77 GSocketConnection
*connection
;
78 GObject
*source_object
;
79 } GThreadedSocketServiceData
;
82 g_threaded_socket_service_func (gpointer _data
,
85 GThreadedSocketService
*threaded
= user_data
;
86 GThreadedSocketServiceData
*data
= _data
;
89 g_signal_emit (data
->service
, g_threaded_socket_service_run_signal
,
90 0, data
->connection
, data
->source_object
, &result
);
92 g_object_unref (data
->service
);
93 g_object_unref (data
->connection
);
94 if (data
->source_object
)
95 g_object_unref (data
->source_object
);
96 g_slice_free (GThreadedSocketServiceData
, data
);
99 if (threaded
->priv
->job_count
-- == threaded
->priv
->max_threads
)
100 g_socket_service_start (G_SOCKET_SERVICE (threaded
));
101 G_UNLOCK (job_count
);
105 g_threaded_socket_service_incoming (GSocketService
*service
,
106 GSocketConnection
*connection
,
107 GObject
*source_object
)
109 GThreadedSocketService
*threaded
;
110 GThreadedSocketServiceData
*data
;
112 threaded
= G_THREADED_SOCKET_SERVICE (service
);
114 data
= g_slice_new (GThreadedSocketServiceData
);
115 data
->service
= g_object_ref (service
);
116 data
->connection
= g_object_ref (connection
);
118 data
->source_object
= g_object_ref (source_object
);
120 data
->source_object
= NULL
;
123 if (++threaded
->priv
->job_count
== threaded
->priv
->max_threads
)
124 g_socket_service_stop (service
);
125 G_UNLOCK (job_count
);
127 g_thread_pool_push (threaded
->priv
->thread_pool
, data
, NULL
);
135 g_threaded_socket_service_init (GThreadedSocketService
*service
)
137 service
->priv
= g_threaded_socket_service_get_instance_private (service
);
138 service
->priv
->max_threads
= 10;
142 g_threaded_socket_service_constructed (GObject
*object
)
144 GThreadedSocketService
*service
= G_THREADED_SOCKET_SERVICE (object
);
146 service
->priv
->thread_pool
=
147 g_thread_pool_new (g_threaded_socket_service_func
,
149 service
->priv
->max_threads
,
156 g_threaded_socket_service_finalize (GObject
*object
)
158 GThreadedSocketService
*service
= G_THREADED_SOCKET_SERVICE (object
);
160 g_thread_pool_free (service
->priv
->thread_pool
, FALSE
, TRUE
);
162 G_OBJECT_CLASS (g_threaded_socket_service_parent_class
)
167 g_threaded_socket_service_get_property (GObject
*object
,
172 GThreadedSocketService
*service
= G_THREADED_SOCKET_SERVICE (object
);
176 case PROP_MAX_THREADS
:
177 g_value_set_int (value
, service
->priv
->max_threads
);
181 G_OBJECT_WARN_INVALID_PROPERTY_ID (object
, prop_id
, pspec
);
186 g_threaded_socket_service_set_property (GObject
*object
,
191 GThreadedSocketService
*service
= G_THREADED_SOCKET_SERVICE (object
);
195 case PROP_MAX_THREADS
:
196 service
->priv
->max_threads
= g_value_get_int (value
);
200 G_OBJECT_WARN_INVALID_PROPERTY_ID (object
, prop_id
, pspec
);
206 g_threaded_socket_service_class_init (GThreadedSocketServiceClass
*class)
208 GObjectClass
*gobject_class
= G_OBJECT_CLASS (class);
209 GSocketServiceClass
*ss_class
= &class->parent_class
;
211 gobject_class
->constructed
= g_threaded_socket_service_constructed
;
212 gobject_class
->finalize
= g_threaded_socket_service_finalize
;
213 gobject_class
->set_property
= g_threaded_socket_service_set_property
;
214 gobject_class
->get_property
= g_threaded_socket_service_get_property
;
216 ss_class
->incoming
= g_threaded_socket_service_incoming
;
219 * GThreadedSocketService::run:
220 * @service: the #GThreadedSocketService.
221 * @connection: a new #GSocketConnection object.
222 * @source_object: the source_object passed to g_socket_listener_add_address().
224 * The ::run signal is emitted in a worker thread in response to an
225 * incoming connection. This thread is dedicated to handling
226 * @connection and may perform blocking IO. The signal handler need
227 * not return until the connection is closed.
229 * Returns: %TRUE to stop further signal handlers from being called
231 g_threaded_socket_service_run_signal
=
232 g_signal_new ("run", G_TYPE_FROM_CLASS (class), G_SIGNAL_RUN_LAST
,
233 G_STRUCT_OFFSET (GThreadedSocketServiceClass
, run
),
234 g_signal_accumulator_true_handled
, NULL
,
235 NULL
, G_TYPE_BOOLEAN
,
236 2, G_TYPE_SOCKET_CONNECTION
, G_TYPE_OBJECT
);
238 g_object_class_install_property (gobject_class
, PROP_MAX_THREADS
,
239 g_param_spec_int ("max-threads",
241 P_("The max number of threads handling clients for this service"),
245 G_PARAM_CONSTRUCT_ONLY
| G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS
));
249 * g_threaded_socket_service_new:
250 * @max_threads: the maximal number of threads to execute concurrently
251 * handling incoming clients, -1 means no limit
253 * Creates a new #GThreadedSocketService with no listeners. Listeners
254 * must be added with one of the #GSocketListener "add" methods.
256 * Returns: a new #GSocketService.
261 g_threaded_socket_service_new (int max_threads
)
263 return g_object_new (G_TYPE_THREADED_SOCKET_SERVICE
,
264 "max-threads", max_threads
,