1 /* 2 * Copyright (C) 2019 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "btstack_run_loop_qt.c" 39 40 /* 41 * btstack_run_loop_qt.c 42 */ 43 44 // enable POSIX functions (needed for -std=c99) 45 #define _POSIX_C_SOURCE 200809 46 47 #include "btstack_run_loop_qt.h" 48 49 #include "btstack_run_loop.h" 50 #include "btstack_run_loop_base.h" 51 #include "btstack_util.h" 52 #include "btstack_linked_list.h" 53 #include "btstack_debug.h" 54 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <sys/time.h> 58 #include <time.h> 59 #include <unistd.h> 60 61 static void btstack_run_loop_qt_dump_timer(void); 62 63 // start time. tv_usec/tv_nsec = 0 64 #ifdef _POSIX_MONOTONIC_CLOCK 65 // use monotonic clock if available 66 static struct timespec init_ts; 67 #else 68 // fallback to gettimeofday 69 static struct timeval init_tv; 70 #endif 71 72 static BTstackRunLoopQt * btstack_run_loop_object; 73 74 #include <QHash> 75 #ifdef Q_OS_WIN 76 // associate each data source with QWinEventNotifier 77 static QHash<btstack_data_source_t *, QWinEventNotifier *> win_event_notifiers; 78 #else 79 static QHash<btstack_data_source_t *, QSocketNotifier *> read_notifiers; 80 static QHash<btstack_data_source_t *, QSocketNotifier *> write_notifiers; 81 #endif 82 83 static void btstack_run_loop_qt_update_data_source(btstack_data_source_t * ds){ 84 #ifdef Q_OS_WIN 85 QWinEventNotifier * win_notifier = win_event_notifiers.value(ds, NULL); 86 if (win_notifier){ 87 bool enabled = (ds->flags & (DATA_SOURCE_CALLBACK_READ | DATA_SOURCE_CALLBACK_WRITE)) != 0; 88 win_notifier->setEnabled(enabled); 89 } 90 #else 91 QSocketNotifier * read_notifier = read_notifiers.value(ds, NULL); 92 if (read_notifier){ 93 bool read_enabled = (ds->flags & DATA_SOURCE_CALLBACK_READ) != 0; 94 read_notifier->setEnabled(read_enabled); 95 } 96 QSocketNotifier * write_notifier = write_notifiers.value(ds, NULL); 97 if (write_notifier){ 98 bool write_enabled = (ds->flags & DATA_SOURCE_CALLBACK_WRITE) != 0; 99 write_notifier->setEnabled(write_enabled); 100 } 101 #endif 102 } 103 104 void btstack_run_loop_qt_add_data_source(btstack_data_source_t *ds){ 105 #ifdef Q_OS_WIN 106 QWinEventNotifier * win_notifier = new QWinEventNotifier(ds->source.handle); 107 win_event_notifiers.insert(ds, win_notifier); 108 btstack_run_loop_qt_update_data_source(ds); 109 QObject::connect(win_notifier, SIGNAL(activated(HANDLE)), btstack_run_loop_object, SLOT(processDataSource(HANDLE))); 110 log_debug("add data source %p with handle %p", ds, ds->source.handle); 111 #else 112 // POSIX Systems: macOS, Linux, .. 113 QSocketNotifier * read_notifier = new QSocketNotifier(ds->source.fd, QSocketNotifier::Read); 114 QSocketNotifier * write_notifier = new QSocketNotifier(ds->source.fd, QSocketNotifier::Write); 115 read_notifiers.insert(ds, read_notifier); 116 write_notifiers.insert(ds, write_notifier); 117 btstack_run_loop_qt_update_data_source(ds); 118 QObject::connect(read_notifier, SIGNAL(activated(int)), btstack_run_loop_object, SLOT(processDataSourceRead(int))); 119 QObject::connect(write_notifier, SIGNAL(activated(int)), btstack_run_loop_object, SLOT(processDataSourceWrite(int))); 120 #endif 121 btstack_run_loop_base_add_data_source(ds); 122 } 123 124 bool btstack_run_loop_qt_remove_data_source(btstack_data_source_t *ds){ 125 #ifdef Q_OS_WIN 126 QWinEventNotifier * win_notifier = win_event_notifiers.value(ds, NULL); 127 if (win_notifier){ 128 win_event_notifiers.remove(ds); 129 free(win_notifier); 130 } 131 #else 132 QSocketNotifier * read_notifier = read_notifiers.value(ds, NULL); 133 if (read_notifier){ 134 read_notifiers.remove(ds); 135 free(read_notifier); 136 } 137 QSocketNotifier * write_notifier = write_notifiers.value(ds, NULL); 138 if (write_notifier){ 139 write_notifiers.remove(ds); 140 free(write_notifier); 141 } 142 #endif 143 return btstack_run_loop_base_remove_data_source(ds); 144 } 145 146 void btstack_run_loop_qt_enable_data_source_callbacks(btstack_data_source_t * ds, uint16_t callback_types){ 147 btstack_run_loop_base_enable_data_source_callbacks(ds, callback_types); 148 btstack_run_loop_qt_update_data_source(ds); 149 } 150 151 void btstack_run_loop_qt_disable_data_source_callbacks(btstack_data_source_t * ds, uint16_t callback_types){ 152 btstack_run_loop_base_disable_data_source_callbacks(ds, callback_types); 153 btstack_run_loop_qt_update_data_source(ds); 154 } 155 156 #ifdef _POSIX_MONOTONIC_CLOCK 157 /** 158 * @brief Returns the timespec which represents the time(stop - start). It might be negative 159 */ 160 static void timespec_diff(struct timespec *start, struct timespec *stop, struct timespec *result){ 161 result->tv_sec = stop->tv_sec - start->tv_sec; 162 if ((stop->tv_nsec - start->tv_nsec) < 0) { 163 result->tv_sec = stop->tv_sec - start->tv_sec - 1; 164 result->tv_nsec = stop->tv_nsec - start->tv_nsec + 1000000000; 165 } else { 166 result->tv_sec = stop->tv_sec - start->tv_sec; 167 result->tv_nsec = stop->tv_nsec - start->tv_nsec; 168 } 169 } 170 171 /** 172 * @brief Convert timespec to miliseconds, might overflow 173 */ 174 static uint64_t timespec_to_milliseconds(struct timespec *a){ 175 uint64_t ret = 0; 176 uint64_t sec_val = (uint64_t)(a->tv_sec); 177 uint64_t nsec_val = (uint64_t)(a->tv_nsec); 178 ret = (sec_val*1000) + (nsec_val/1000000); 179 return ret; 180 } 181 182 /** 183 * @brief Returns the milisecond value of (stop - start). Might overflow 184 */ 185 static uint64_t timespec_diff_milis(struct timespec* start, struct timespec* stop){ 186 struct timespec diff_ts; 187 timespec_diff(start, stop, &diff_ts); 188 return timespec_to_milliseconds(&diff_ts); 189 } 190 #endif 191 192 /** 193 * @brief Queries the current time in ms since start 194 */ 195 static uint32_t btstack_run_loop_qt_get_time_ms(void){ 196 uint32_t time_ms; 197 #ifdef _POSIX_MONOTONIC_CLOCK 198 struct timespec now_ts; 199 clock_gettime(CLOCK_MONOTONIC, &now_ts); 200 time_ms = (uint32_t) timespec_diff_milis(&init_ts, &now_ts); 201 #else 202 struct timeval tv; 203 gettimeofday(&tv, NULL); 204 time_ms = (uint32_t) ((tv.tv_sec - init_tv.tv_sec) * 1000) + (tv.tv_usec / 1000); 205 #endif 206 return time_ms; 207 } 208 209 /** 210 * Execute run_loop 211 */ 212 static void btstack_run_loop_qt_execute(void) { 213 } 214 215 // set timer 216 static void btstack_run_loop_qt_set_timer(btstack_timer_source_t *a, uint32_t timeout_in_ms){ 217 uint32_t time_ms = btstack_run_loop_qt_get_time_ms(); 218 a->timeout = time_ms + timeout_in_ms; 219 log_debug("btstack_run_loop_qt_set_timer to %u ms (now %u, timeout %u)", a->timeout, time_ms, timeout_in_ms); 220 } 221 222 /** 223 * Add timer to run_loop (keep list sorted) 224 */ 225 static void btstack_run_loop_qt_add_timer(btstack_timer_source_t *ts){ 226 uint32_t now = btstack_run_loop_qt_get_time_ms(); 227 int32_t next_timeout_before = btstack_run_loop_base_get_time_until_timeout(now); 228 btstack_run_loop_base_add_timer(ts); 229 int32_t next_timeout_after = btstack_run_loop_base_get_time_until_timeout(now); 230 if (next_timeout_after >= 0 && (next_timeout_after != next_timeout_before)){ 231 QTimer::singleShot((uint32_t)next_timeout_after, btstack_run_loop_object, SLOT(processTimers())); 232 } 233 } 234 235 // BTstackRunLoopQt class implementation 236 void BTstackRunLoopQt::processTimers(){ 237 uint32_t now = btstack_run_loop_qt_get_time_ms(); 238 int32_t next_timeout_before = btstack_run_loop_base_get_time_until_timeout(now); 239 btstack_run_loop_base_process_timers(btstack_run_loop_qt_get_time_ms()); 240 int32_t next_timeout_after = btstack_run_loop_base_get_time_until_timeout(now); 241 if (next_timeout_after >= 0 && (next_timeout_after != next_timeout_before)){ 242 QTimer::singleShot((uint32_t)next_timeout_after, this, SLOT(processTimers())); 243 } 244 } 245 #ifdef Q_OS_WIN 246 void BTstackRunLoopQt::processDataSource(HANDLE handle){ 247 log_debug("lookup data source for handle %p, sender %p", handle, QObject::sender()); 248 // find ds 249 btstack_linked_list_iterator_t it; 250 btstack_linked_list_iterator_init(&it, &btstack_run_loop_base_data_sources); 251 while (btstack_linked_list_iterator_has_next(&it)){ 252 btstack_data_source_t *ds = (btstack_data_source_t*) btstack_linked_list_iterator_next(&it); 253 if (handle == ds->source.handle){ 254 if (ds->flags & DATA_SOURCE_CALLBACK_READ){ 255 log_debug("process read ds %p with handle %p", ds, ds->source.handle); 256 ds->process(ds, DATA_SOURCE_CALLBACK_READ); 257 } else if (ds->flags & DATA_SOURCE_CALLBACK_WRITE){ 258 log_debug("process write ds %p with handle %p", ds, ds->source.handle); 259 ds->process(ds, DATA_SOURCE_CALLBACK_WRITE); 260 } 261 break; 262 } 263 } 264 } 265 #else 266 267 static void btstack_run_loop_qt_process_data_source(int fd, uint16_t callback_types){ 268 // find ds 269 btstack_linked_list_iterator_t it; 270 btstack_linked_list_iterator_init(&it, &btstack_run_loop_base_data_sources); 271 while (btstack_linked_list_iterator_has_next(&it)){ 272 btstack_data_source_t *ds = (btstack_data_source_t*) btstack_linked_list_iterator_next(&it); 273 if (fd == ds->source.fd){ 274 if ((callback_types & DATA_SOURCE_CALLBACK_READ) != 0){ 275 if ((ds->flags & DATA_SOURCE_CALLBACK_READ) != 0){ 276 ds->process(ds, DATA_SOURCE_CALLBACK_READ); 277 } 278 } 279 if ((callback_types & DATA_SOURCE_CALLBACK_WRITE) != 0){ 280 if ((ds->flags & DATA_SOURCE_CALLBACK_WRITE) != 0){ 281 ds->process(ds, DATA_SOURCE_CALLBACK_WRITE); 282 } 283 } 284 break; 285 } 286 } 287 } 288 289 void BTstackRunLoopQt::processDataSourceRead(int fd){ 290 log_debug("read - lookup data source for handle %p, sender %p", fd, QObject::sender()); 291 btstack_run_loop_qt_process_data_source(fd, DATA_SOURCE_CALLBACK_READ); 292 } 293 void BTstackRunLoopQt::processDataSourceWrite(int fd){ 294 log_debug("write - lookup data source for handle %p, sender %p", fd, QObject::sender()); 295 btstack_run_loop_qt_process_data_source(fd, DATA_SOURCE_CALLBACK_WRITE); 296 } 297 #endif 298 299 static void btstack_run_loop_qt_init(void){ 300 301 btstack_run_loop_base_init(); 302 303 btstack_run_loop_object = new BTstackRunLoopQt(); 304 305 #ifdef _POSIX_MONOTONIC_CLOCK 306 clock_gettime(CLOCK_MONOTONIC, &init_ts); 307 init_ts.tv_nsec = 0; 308 #else 309 // just assume that we started at tv_usec == 0 310 gettimeofday(&init_tv, NULL); 311 init_tv.tv_usec = 0; 312 #endif 313 } 314 315 static void btstack_run_loop_qt_dump_timer(void){ 316 btstack_linked_item_t *it; 317 int i = 0; 318 for (it = (btstack_linked_item_t *) btstack_run_loop_base_timers; it ; it = it->next){ 319 btstack_timer_source_t *ts = (btstack_timer_source_t*) it; 320 log_info("timer %u (%p): timeout %u\n", i, ts, ts->timeout); 321 } 322 } 323 324 static const btstack_run_loop_t btstack_run_loop_qt = { 325 &btstack_run_loop_qt_init, 326 &btstack_run_loop_qt_add_data_source, 327 &btstack_run_loop_qt_remove_data_source, 328 &btstack_run_loop_qt_enable_data_source_callbacks, 329 &btstack_run_loop_qt_disable_data_source_callbacks, 330 &btstack_run_loop_qt_set_timer, 331 &btstack_run_loop_qt_add_timer, 332 &btstack_run_loop_base_remove_timer, 333 &btstack_run_loop_qt_execute, 334 &btstack_run_loop_qt_dump_timer, 335 &btstack_run_loop_qt_get_time_ms, 336 }; 337 338 /** 339 * Provide btstack_run_loop_posix instance 340 */ 341 const btstack_run_loop_t * btstack_run_loop_qt_get_instance(void){ 342 return &btstack_run_loop_qt; 343 } 344 345