Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * D-Bus++ - C++ bindings for D-Bus |
| 4 | * |
| 5 | * Copyright (C) 2005-2007 Paolo Durante <shackan@gmail.com> |
| 6 | * |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with this library; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #ifdef HAVE_CONFIG_H |
| 25 | #include <config.h> |
| 26 | #endif |
| 27 | |
| 28 | #include <dbus-c++/dispatcher.h> |
| 29 | |
| 30 | #include <dbus/dbus.h> |
| 31 | |
| 32 | #include "dispatcher_p.h" |
| 33 | #include "server_p.h" |
| 34 | #include "connection_p.h" |
| 35 | |
| 36 | DBus::Dispatcher *DBus::default_dispatcher = NULL; |
| 37 | |
| 38 | using namespace DBus; |
| 39 | |
| 40 | Timeout::Timeout(Timeout::Internal *i) |
| 41 | : _int(i) |
| 42 | { |
| 43 | dbus_timeout_set_data((DBusTimeout *)i, this, NULL); |
| 44 | } |
| 45 | |
| 46 | int Timeout::interval() const |
| 47 | { |
| 48 | return dbus_timeout_get_interval((DBusTimeout *)_int); |
| 49 | } |
| 50 | |
| 51 | bool Timeout::enabled() const |
| 52 | { |
| 53 | return dbus_timeout_get_enabled((DBusTimeout *)_int); |
| 54 | } |
| 55 | |
| 56 | bool Timeout::handle() |
| 57 | { |
| 58 | return dbus_timeout_handle((DBusTimeout *)_int); |
| 59 | } |
| 60 | |
| 61 | /* |
| 62 | */ |
| 63 | |
| 64 | Watch::Watch(Watch::Internal *i) |
| 65 | : _int(i) |
| 66 | { |
| 67 | dbus_watch_set_data((DBusWatch *)i, this, NULL); |
| 68 | } |
| 69 | |
| 70 | int Watch::descriptor() const |
| 71 | { |
| 72 | #if HAVE_WIN32 |
| 73 | return dbus_watch_get_socket((DBusWatch *)_int); |
| 74 | #else |
| 75 | // check dbus version and use dbus_watch_get_unix_fd() only in dbus >= 1.1.1 |
| 76 | #if (DBUS_VERSION_MAJOR == 1 && DBUS_VERSION_MINOR == 1 && DBUS_VERSION_MICRO >= 1) || \ |
| 77 | (DBUS_VERSION_MAJOR == 1 && DBUS_VERSION_MAJOR > 1) || \ |
| 78 | (DBUS_VERSION_MAJOR > 1) |
| 79 | return dbus_watch_get_unix_fd((DBusWatch *)_int); |
| 80 | #else |
| 81 | return dbus_watch_get_fd((DBusWatch *)_int); |
| 82 | #endif |
| 83 | #endif |
| 84 | } |
| 85 | |
| 86 | int Watch::flags() const |
| 87 | { |
| 88 | return dbus_watch_get_flags((DBusWatch *)_int); |
| 89 | } |
| 90 | |
| 91 | bool Watch::enabled() const |
| 92 | { |
| 93 | return dbus_watch_get_enabled((DBusWatch *)_int); |
| 94 | } |
| 95 | |
| 96 | bool Watch::handle(int flags) |
| 97 | { |
| 98 | return dbus_watch_handle((DBusWatch *)_int, flags); |
| 99 | } |
| 100 | |
| 101 | /* |
| 102 | */ |
| 103 | |
| 104 | dbus_bool_t Dispatcher::Private::on_add_watch(DBusWatch *watch, void *data) |
| 105 | { |
| 106 | Dispatcher *d = static_cast<Dispatcher *>(data); |
| 107 | |
| 108 | Watch::Internal *w = reinterpret_cast<Watch::Internal *>(watch); |
| 109 | |
| 110 | d->add_watch(w); |
| 111 | |
| 112 | return true; |
| 113 | } |
| 114 | |
| 115 | void Dispatcher::Private::on_rem_watch(DBusWatch *watch, void *data) |
| 116 | { |
| 117 | Dispatcher *d = static_cast<Dispatcher *>(data); |
| 118 | |
| 119 | Watch *w = static_cast<Watch *>(dbus_watch_get_data(watch)); |
| 120 | |
| 121 | d->rem_watch(w); |
| 122 | } |
| 123 | |
| 124 | void Dispatcher::Private::on_toggle_watch(DBusWatch *watch, void *data) |
| 125 | { |
| 126 | Watch *w = static_cast<Watch *>(dbus_watch_get_data(watch)); |
| 127 | |
| 128 | w->toggle(); |
| 129 | } |
| 130 | |
| 131 | dbus_bool_t Dispatcher::Private::on_add_timeout(DBusTimeout *timeout, void *data) |
| 132 | { |
| 133 | Dispatcher *d = static_cast<Dispatcher *>(data); |
| 134 | |
| 135 | Timeout::Internal *t = reinterpret_cast<Timeout::Internal *>(timeout); |
| 136 | |
| 137 | d->add_timeout(t); |
| 138 | |
| 139 | return true; |
| 140 | } |
| 141 | |
| 142 | void Dispatcher::Private::on_rem_timeout(DBusTimeout *timeout, void *data) |
| 143 | { |
| 144 | Dispatcher *d = static_cast<Dispatcher *>(data); |
| 145 | |
| 146 | Timeout *t = static_cast<Timeout *>(dbus_timeout_get_data(timeout)); |
| 147 | |
| 148 | d->rem_timeout(t); |
| 149 | } |
| 150 | |
| 151 | void Dispatcher::Private::on_toggle_timeout(DBusTimeout *timeout, void *data) |
| 152 | { |
| 153 | Timeout *t = static_cast<Timeout *>(dbus_timeout_get_data(timeout)); |
| 154 | |
| 155 | t->toggle(); |
| 156 | } |
| 157 | |
| 158 | void Dispatcher::queue_connection(Connection::Private *cp) |
| 159 | { |
| 160 | _mutex_p.lock(); |
| 161 | _pending_queue.push_back(cp); |
| 162 | _mutex_p.unlock(); |
| 163 | } |
| 164 | |
| 165 | |
| 166 | bool Dispatcher::has_something_to_dispatch() |
| 167 | { |
| 168 | _mutex_p.lock(); |
| 169 | bool has_something = false; |
| 170 | for (Connection::PrivatePList::iterator it = _pending_queue.begin(); |
| 171 | it != _pending_queue.end() && !has_something; |
| 172 | ++it) |
| 173 | { |
| 174 | has_something = (*it)->has_something_to_dispatch(); |
| 175 | } |
| 176 | |
| 177 | _mutex_p.unlock(); |
| 178 | return has_something; |
| 179 | } |
| 180 | |
| 181 | |
| 182 | void Dispatcher::dispatch_pending() |
| 183 | { |
| 184 | while (1) |
| 185 | { |
| 186 | _mutex_p.lock(); |
| 187 | if (_pending_queue.empty()) |
| 188 | { |
| 189 | _mutex_p.unlock(); |
| 190 | break; |
| 191 | } |
| 192 | |
| 193 | Connection::PrivatePList pending_queue_copy(_pending_queue); |
| 194 | _mutex_p.unlock(); |
| 195 | |
| 196 | size_t copy_elem_num(pending_queue_copy.size()); |
| 197 | |
| 198 | dispatch_pending(pending_queue_copy); |
| 199 | |
| 200 | //only push_back on list is mandatory! |
| 201 | _mutex_p.lock(); |
| 202 | |
| 203 | Connection::PrivatePList::iterator i, j; |
| 204 | i = _pending_queue.begin(); |
| 205 | size_t counter = 0; |
| 206 | while (counter < copy_elem_num && i != _pending_queue.end()) |
| 207 | { |
| 208 | j = i; |
| 209 | ++j; |
| 210 | _pending_queue.erase(i); |
| 211 | i = j; |
| 212 | ++counter; |
| 213 | } |
| 214 | |
| 215 | _mutex_p.unlock(); |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | void Dispatcher::dispatch_pending(Connection::PrivatePList &pending_queue) |
| 220 | { |
| 221 | // SEEME: dbus-glib is dispatching only one message at a time to not starve the loop/other things... |
| 222 | |
| 223 | _mutex_p_copy.lock(); |
| 224 | while (pending_queue.size() > 0) |
| 225 | { |
| 226 | Connection::PrivatePList::iterator i, j; |
| 227 | |
| 228 | i = pending_queue.begin(); |
| 229 | |
| 230 | while (i != pending_queue.end()) |
| 231 | { |
| 232 | j = i; |
| 233 | |
| 234 | ++j; |
| 235 | |
| 236 | if ((*i)->do_dispatch()) |
| 237 | pending_queue.erase(i); |
| 238 | else |
| 239 | debug_log("dispatch_pending_private: do_dispatch error"); |
| 240 | |
| 241 | i = j; |
| 242 | } |
| 243 | } |
| 244 | _mutex_p_copy.unlock(); |
| 245 | } |
| 246 | |
| 247 | void DBus::_init_threading() |
| 248 | { |
| 249 | #ifdef DBUS_HAS_THREADS_INIT_DEFAULT |
| 250 | dbus_threads_init_default(); |
| 251 | #else |
| 252 | debug_log("Thread support is not enabled! Your D-Bus version is too old!"); |
| 253 | #endif//DBUS_HAS_THREADS_INIT_DEFAULT |
| 254 | } |
| 255 | |
| 256 | void DBus::_init_threading( |
| 257 | MutexNewFn m1, |
| 258 | MutexFreeFn m2, |
| 259 | MutexLockFn m3, |
| 260 | MutexUnlockFn m4, |
| 261 | CondVarNewFn c1, |
| 262 | CondVarFreeFn c2, |
| 263 | CondVarWaitFn c3, |
| 264 | CondVarWaitTimeoutFn c4, |
| 265 | CondVarWakeOneFn c5, |
| 266 | CondVarWakeAllFn c6 |
| 267 | ) |
| 268 | { |
| 269 | #ifndef DBUS_HAS_RECURSIVE_MUTEX |
| 270 | DBusThreadFunctions functions = |
| 271 | { |
| 272 | DBUS_THREAD_FUNCTIONS_MUTEX_NEW_MASK | |
| 273 | DBUS_THREAD_FUNCTIONS_MUTEX_FREE_MASK | |
| 274 | DBUS_THREAD_FUNCTIONS_MUTEX_LOCK_MASK | |
| 275 | DBUS_THREAD_FUNCTIONS_MUTEX_UNLOCK_MASK | |
| 276 | DBUS_THREAD_FUNCTIONS_CONDVAR_NEW_MASK | |
| 277 | DBUS_THREAD_FUNCTIONS_CONDVAR_FREE_MASK | |
| 278 | DBUS_THREAD_FUNCTIONS_CONDVAR_WAIT_MASK | |
| 279 | DBUS_THREAD_FUNCTIONS_CONDVAR_WAIT_TIMEOUT_MASK | |
| 280 | DBUS_THREAD_FUNCTIONS_CONDVAR_WAKE_ONE_MASK | |
| 281 | DBUS_THREAD_FUNCTIONS_CONDVAR_WAKE_ALL_MASK, |
| 282 | (DBusMutexNewFunction) m1, |
| 283 | (DBusMutexFreeFunction) m2, |
| 284 | (DBusMutexLockFunction) m3, |
| 285 | (DBusMutexUnlockFunction) m4, |
| 286 | (DBusCondVarNewFunction) c1, |
| 287 | (DBusCondVarFreeFunction) c2, |
| 288 | (DBusCondVarWaitFunction) c3, |
| 289 | (DBusCondVarWaitTimeoutFunction) c4, |
| 290 | (DBusCondVarWakeOneFunction) c5, |
| 291 | (DBusCondVarWakeAllFunction) c6 |
| 292 | }; |
| 293 | #else |
| 294 | DBusThreadFunctions functions = |
| 295 | { |
| 296 | DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_NEW_MASK | |
| 297 | DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_FREE_MASK | |
| 298 | DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_LOCK_MASK | |
| 299 | DBUS_THREAD_FUNCTIONS_RECURSIVE_MUTEX_UNLOCK_MASK | |
| 300 | DBUS_THREAD_FUNCTIONS_CONDVAR_NEW_MASK | |
| 301 | DBUS_THREAD_FUNCTIONS_CONDVAR_FREE_MASK | |
| 302 | DBUS_THREAD_FUNCTIONS_CONDVAR_WAIT_MASK | |
| 303 | DBUS_THREAD_FUNCTIONS_CONDVAR_WAIT_TIMEOUT_MASK | |
| 304 | DBUS_THREAD_FUNCTIONS_CONDVAR_WAKE_ONE_MASK | |
| 305 | DBUS_THREAD_FUNCTIONS_CONDVAR_WAKE_ALL_MASK, |
| 306 | 0, 0, 0, 0, |
| 307 | (DBusCondVarNewFunction) c1, |
| 308 | (DBusCondVarFreeFunction) c2, |
| 309 | (DBusCondVarWaitFunction) c3, |
| 310 | (DBusCondVarWaitTimeoutFunction) c4, |
| 311 | (DBusCondVarWakeOneFunction) c5, |
| 312 | (DBusCondVarWakeAllFunction) c6, |
| 313 | (DBusRecursiveMutexNewFunction) m1, |
| 314 | (DBusRecursiveMutexFreeFunction) m2, |
| 315 | (DBusRecursiveMutexLockFunction) m3, |
| 316 | (DBusRecursiveMutexUnlockFunction) m4 |
| 317 | }; |
| 318 | #endif//DBUS_HAS_RECURSIVE_MUTEX |
| 319 | dbus_threads_init(&functions); |
| 320 | } |