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++/eventloop.h> |
| 29 | #include <dbus-c++/debug.h> |
| 30 | |
| 31 | #include <sys/poll.h> |
| 32 | #include <sys/time.h> |
| 33 | |
| 34 | #include <dbus/dbus.h> |
| 35 | |
| 36 | using namespace DBus; |
| 37 | using namespace std; |
| 38 | |
| 39 | static double millis(timeval tv) |
| 40 | { |
| 41 | return (tv.tv_sec * 1000.0 + tv.tv_usec / 1000.0); |
| 42 | } |
| 43 | |
| 44 | DefaultTimeout::DefaultTimeout(int interval, bool repeat, DefaultMainLoop *ed) |
| 45 | : _enabled(true), _interval(interval), _repeat(repeat), _expiration(0), _data(0), _disp(ed) |
| 46 | { |
| 47 | timeval now; |
| 48 | gettimeofday(&now, NULL); |
| 49 | |
| 50 | _expiration = millis(now) + interval; |
| 51 | |
| 52 | _disp->_mutex_t.lock(); |
| 53 | _disp->_timeouts.push_back(this); |
| 54 | _disp->_mutex_t.unlock(); |
| 55 | } |
| 56 | |
| 57 | DefaultTimeout::~DefaultTimeout() |
| 58 | { |
| 59 | _disp->_mutex_t.lock(); |
| 60 | _disp->_timeouts.remove(this); |
| 61 | _disp->_mutex_t.unlock(); |
| 62 | } |
| 63 | |
| 64 | DefaultWatch::DefaultWatch(int fd, int flags, DefaultMainLoop *ed) |
| 65 | : _enabled(true), _fd(fd), _flags(flags), _state(0), _data(0), _disp(ed) |
| 66 | { |
| 67 | _disp->_mutex_w.lock(); |
| 68 | _disp->_watches.push_back(this); |
| 69 | _disp->_mutex_w.unlock(); |
| 70 | } |
| 71 | |
| 72 | DefaultWatch::~DefaultWatch() |
| 73 | { |
| 74 | _disp->_mutex_w.lock(); |
| 75 | _disp->_watches.remove(this); |
| 76 | _disp->_mutex_w.unlock(); |
| 77 | } |
| 78 | |
| 79 | DefaultMutex::DefaultMutex() |
| 80 | { |
| 81 | pthread_mutex_init(&_mutex, NULL); |
| 82 | } |
| 83 | |
| 84 | DefaultMutex::DefaultMutex(bool recursive) |
| 85 | { |
| 86 | if (recursive) |
| 87 | { |
| 88 | /* FIXME PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP */ |
| 89 | pthread_mutex_t recmutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER; |
| 90 | _mutex = recmutex; |
| 91 | } |
| 92 | else |
| 93 | { |
| 94 | pthread_mutex_init(&_mutex, NULL); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | DefaultMutex::~DefaultMutex() |
| 99 | { |
| 100 | pthread_mutex_destroy(&_mutex); |
| 101 | } |
| 102 | |
| 103 | void DefaultMutex::lock() |
| 104 | { |
| 105 | pthread_mutex_lock(&_mutex); |
| 106 | } |
| 107 | |
| 108 | void DefaultMutex::unlock() |
| 109 | { |
| 110 | pthread_mutex_unlock(&_mutex); |
| 111 | } |
| 112 | |
| 113 | DefaultMainLoop::DefaultMainLoop() : |
| 114 | _mutex_w(true) |
| 115 | { |
| 116 | } |
| 117 | |
| 118 | DefaultMainLoop::~DefaultMainLoop() |
| 119 | { |
| 120 | _mutex_w.lock(); |
| 121 | |
| 122 | DefaultWatches::iterator wi = _watches.begin(); |
| 123 | while (wi != _watches.end()) |
| 124 | { |
| 125 | DefaultWatches::iterator wmp = wi; |
| 126 | ++wmp; |
| 127 | _mutex_w.unlock(); |
| 128 | delete(*wi); |
| 129 | _mutex_w.lock(); |
| 130 | wi = wmp; |
| 131 | } |
| 132 | _mutex_w.unlock(); |
| 133 | |
| 134 | _mutex_t.lock(); |
| 135 | |
| 136 | DefaultTimeouts::iterator ti = _timeouts.begin(); |
| 137 | while (ti != _timeouts.end()) |
| 138 | { |
| 139 | DefaultTimeouts::iterator tmp = ti; |
| 140 | ++tmp; |
| 141 | _mutex_t.unlock(); |
| 142 | delete(*ti); |
| 143 | _mutex_t.lock(); |
| 144 | ti = tmp; |
| 145 | } |
| 146 | _mutex_t.unlock(); |
| 147 | } |
| 148 | |
| 149 | void DefaultMainLoop::dispatch() |
| 150 | { |
| 151 | _mutex_w.lock(); |
| 152 | |
| 153 | int nfd = _watches.size(); |
| 154 | |
| 155 | if (_fdunlock) |
| 156 | { |
| 157 | nfd = nfd + 2; |
| 158 | } |
| 159 | |
| 160 | pollfd fds[nfd]; |
| 161 | |
| 162 | DefaultWatches::iterator wi = _watches.begin(); |
| 163 | |
| 164 | for (nfd = 0; wi != _watches.end(); ++wi) |
| 165 | { |
| 166 | if ((*wi)->enabled()) |
| 167 | { |
| 168 | fds[nfd].fd = (*wi)->descriptor(); |
| 169 | fds[nfd].events = (*wi)->flags(); |
| 170 | fds[nfd].revents = 0; |
| 171 | |
| 172 | ++nfd; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | if (_fdunlock) |
| 177 | { |
| 178 | fds[nfd].fd = _fdunlock[0]; |
| 179 | fds[nfd].events = POLLIN | POLLOUT | POLLPRI ; |
| 180 | fds[nfd].revents = 0; |
| 181 | |
| 182 | nfd++; |
| 183 | fds[nfd].fd = _fdunlock[1]; |
| 184 | fds[nfd].events = POLLIN | POLLOUT | POLLPRI ; |
| 185 | fds[nfd].revents = 0; |
| 186 | } |
| 187 | |
| 188 | _mutex_w.unlock(); |
| 189 | |
| 190 | int wait_min = 10000; |
| 191 | |
| 192 | DefaultTimeouts::iterator ti; |
| 193 | |
| 194 | _mutex_t.lock(); |
| 195 | |
| 196 | for (ti = _timeouts.begin(); ti != _timeouts.end(); ++ti) |
| 197 | { |
| 198 | if ((*ti)->enabled() && (*ti)->interval() < wait_min) |
| 199 | wait_min = (*ti)->interval(); |
| 200 | } |
| 201 | |
| 202 | _mutex_t.unlock(); |
| 203 | |
| 204 | poll(fds, nfd, wait_min); |
| 205 | |
| 206 | timeval now; |
| 207 | gettimeofday(&now, NULL); |
| 208 | |
| 209 | double now_millis = millis(now); |
| 210 | |
| 211 | _mutex_t.lock(); |
| 212 | |
| 213 | ti = _timeouts.begin(); |
| 214 | |
| 215 | while (ti != _timeouts.end()) |
| 216 | { |
| 217 | DefaultTimeouts::iterator tmp = ti; |
| 218 | ++tmp; |
| 219 | |
| 220 | if ((*ti)->enabled() && now_millis >= (*ti)->_expiration) |
| 221 | { |
| 222 | (*ti)->expired(*(*ti)); |
| 223 | |
| 224 | if ((*ti)->_repeat) |
| 225 | { |
| 226 | (*ti)->_expiration = now_millis + (*ti)->_interval; |
| 227 | } |
| 228 | |
| 229 | } |
| 230 | |
| 231 | ti = tmp; |
| 232 | } |
| 233 | |
| 234 | _mutex_t.unlock(); |
| 235 | |
| 236 | _mutex_w.lock(); |
| 237 | |
| 238 | for (int j = 0; j < nfd; ++j) |
| 239 | { |
| 240 | DefaultWatches::iterator wi; |
| 241 | |
| 242 | for (wi = _watches.begin(); wi != _watches.end();) |
| 243 | { |
| 244 | DefaultWatches::iterator tmp = wi; |
| 245 | ++tmp; |
| 246 | |
| 247 | if ((*wi)->enabled() && (*wi)->_fd == fds[j].fd) |
| 248 | { |
| 249 | if (fds[j].revents) |
| 250 | { |
| 251 | (*wi)->_state = fds[j].revents; |
| 252 | |
| 253 | (*wi)->ready(*(*wi)); |
| 254 | |
| 255 | fds[j].revents = 0; |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | wi = tmp; |
| 260 | } |
| 261 | } |
| 262 | _mutex_w.unlock(); |
| 263 | } |
| 264 | |