1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 * 16 */ 17 18 #include <jni.h> 19 20 #include <errno.h> 21 #include <string.h> 22 #include <unistd.h> 23 #include <sys/resource.h> 24 25 #include "android_native_app_glue.h" 26 #include <android/log.h> 27 28 #define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "threaded_app", __VA_ARGS__)) 29 free_saved_state(struct android_app * android_app)30 static void free_saved_state(struct android_app* android_app) { 31 pthread_mutex_lock(&android_app->mutex); 32 if (android_app->savedState != NULL) { 33 free(android_app->savedState); 34 android_app->savedState = NULL; 35 android_app->savedStateSize = 0; 36 } 37 pthread_mutex_unlock(&android_app->mutex); 38 } 39 android_app_read_cmd(struct android_app * android_app)40 int8_t android_app_read_cmd(struct android_app* android_app) { 41 int8_t cmd; 42 if (read(android_app->msgread, &cmd, sizeof(cmd)) == sizeof(cmd)) { 43 switch (cmd) { 44 case APP_CMD_SAVE_STATE: 45 free_saved_state(android_app); 46 break; 47 } 48 return cmd; 49 } else { 50 LOGI("No data on command pipe!"); 51 } 52 return -1; 53 } 54 print_cur_config(struct android_app * android_app)55 static void print_cur_config(struct android_app* android_app) { 56 char lang[2], country[2]; 57 AConfiguration_getLanguage(android_app->config, lang); 58 AConfiguration_getCountry(android_app->config, country); 59 60 LOGI("Config: mcc=%d mnc=%d lang=%c%c cnt=%c%c orien=%d touch=%d dens=%d " 61 "keys=%d nav=%d keysHid=%d navHid=%d sdk=%d size=%d long=%d " 62 "modetype=%d modenight=%d", 63 AConfiguration_getMcc(android_app->config), 64 AConfiguration_getMnc(android_app->config), 65 lang[0], lang[1], country[0], country[1], 66 AConfiguration_getOrientation(android_app->config), 67 AConfiguration_getTouchscreen(android_app->config), 68 AConfiguration_getDensity(android_app->config), 69 AConfiguration_getKeyboard(android_app->config), 70 AConfiguration_getNavigation(android_app->config), 71 AConfiguration_getKeysHidden(android_app->config), 72 AConfiguration_getNavHidden(android_app->config), 73 AConfiguration_getSdkVersion(android_app->config), 74 AConfiguration_getScreenSize(android_app->config), 75 AConfiguration_getScreenLong(android_app->config), 76 AConfiguration_getUiModeType(android_app->config), 77 AConfiguration_getUiModeNight(android_app->config)); 78 } 79 android_app_pre_exec_cmd(struct android_app * android_app,int8_t cmd)80 void android_app_pre_exec_cmd(struct android_app* android_app, int8_t cmd) { 81 switch (cmd) { 82 case APP_CMD_INPUT_CHANGED: 83 LOGI("APP_CMD_INPUT_CHANGED\n"); 84 pthread_mutex_lock(&android_app->mutex); 85 if (android_app->inputQueue != NULL) { 86 AInputQueue_detachLooper(android_app->inputQueue); 87 } 88 android_app->inputQueue = android_app->pendingInputQueue; 89 if (android_app->inputQueue != NULL) { 90 LOGI("Attaching input queue to looper"); 91 AInputQueue_attachLooper(android_app->inputQueue, 92 android_app->looper, LOOPER_ID_INPUT, NULL, 93 &android_app->inputPollSource); 94 } 95 pthread_cond_broadcast(&android_app->cond); 96 pthread_mutex_unlock(&android_app->mutex); 97 break; 98 99 case APP_CMD_INIT_WINDOW: 100 LOGI("APP_CMD_INIT_WINDOW\n"); 101 pthread_mutex_lock(&android_app->mutex); 102 android_app->window = android_app->pendingWindow; 103 pthread_cond_broadcast(&android_app->cond); 104 pthread_mutex_unlock(&android_app->mutex); 105 break; 106 107 case APP_CMD_TERM_WINDOW: 108 LOGI("APP_CMD_TERM_WINDOW\n"); 109 pthread_cond_broadcast(&android_app->cond); 110 break; 111 112 case APP_CMD_RESUME: 113 case APP_CMD_START: 114 case APP_CMD_PAUSE: 115 case APP_CMD_STOP: 116 LOGI("activityState=%d\n", cmd); 117 pthread_mutex_lock(&android_app->mutex); 118 android_app->activityState = cmd; 119 pthread_cond_broadcast(&android_app->cond); 120 pthread_mutex_unlock(&android_app->mutex); 121 break; 122 123 case APP_CMD_CONFIG_CHANGED: 124 LOGI("APP_CMD_CONFIG_CHANGED\n"); 125 AConfiguration_fromAssetManager(android_app->config, 126 android_app->activity->assetManager); 127 print_cur_config(android_app); 128 break; 129 130 case APP_CMD_DESTROY: 131 LOGI("APP_CMD_DESTROY\n"); 132 android_app->destroyRequested = 1; 133 break; 134 } 135 } 136 android_app_post_exec_cmd(struct android_app * android_app,int8_t cmd)137 void android_app_post_exec_cmd(struct android_app* android_app, int8_t cmd) { 138 switch (cmd) { 139 case APP_CMD_TERM_WINDOW: 140 LOGI("APP_CMD_TERM_WINDOW\n"); 141 pthread_mutex_lock(&android_app->mutex); 142 android_app->window = NULL; 143 pthread_cond_broadcast(&android_app->cond); 144 pthread_mutex_unlock(&android_app->mutex); 145 break; 146 147 case APP_CMD_SAVE_STATE: 148 LOGI("APP_CMD_SAVE_STATE\n"); 149 pthread_mutex_lock(&android_app->mutex); 150 android_app->stateSaved = 1; 151 pthread_cond_broadcast(&android_app->cond); 152 pthread_mutex_unlock(&android_app->mutex); 153 break; 154 155 case APP_CMD_RESUME: 156 free_saved_state(android_app); 157 break; 158 } 159 } 160 app_dummy()161 void app_dummy() { 162 163 } 164 android_app_destroy(struct android_app * android_app)165 static void android_app_destroy(struct android_app* android_app) { 166 LOGI("android_app_destroy!"); 167 free_saved_state(android_app); 168 pthread_mutex_lock(&android_app->mutex); 169 if (android_app->inputQueue != NULL) { 170 AInputQueue_detachLooper(android_app->inputQueue); 171 } 172 AConfiguration_delete(android_app->config); 173 android_app->destroyed = 1; 174 pthread_cond_broadcast(&android_app->cond); 175 pthread_mutex_unlock(&android_app->mutex); 176 // Can't touch android_app object after this. 177 } 178 process_input(struct android_app * app,struct android_poll_source * source)179 static void process_input(struct android_app* app, struct android_poll_source* source) { 180 AInputEvent* event = NULL; 181 if (AInputQueue_getEvent(app->inputQueue, &event) >= 0) { 182 LOGI("New input event: type=%d\n", AInputEvent_getType(event)); 183 if (AInputQueue_preDispatchEvent(app->inputQueue, event)) { 184 return; 185 } 186 int32_t handled = 0; 187 if (app->onInputEvent != NULL) handled = app->onInputEvent(app, event); 188 AInputQueue_finishEvent(app->inputQueue, event, handled); 189 } else { 190 LOGI("Failure reading next input event: %s\n", strerror(errno)); 191 } 192 } 193 process_cmd(struct android_app * app,struct android_poll_source * source)194 static void process_cmd(struct android_app* app, struct android_poll_source* source) { 195 int8_t cmd = android_app_read_cmd(app); 196 android_app_pre_exec_cmd(app, cmd); 197 if (app->onAppCmd != NULL) app->onAppCmd(app, cmd); 198 android_app_post_exec_cmd(app, cmd); 199 } 200 android_app_entry(void * param)201 static void* android_app_entry(void* param) { 202 struct android_app* android_app = (struct android_app*)param; 203 204 android_app->config = AConfiguration_new(); 205 AConfiguration_fromAssetManager(android_app->config, android_app->activity->assetManager); 206 207 print_cur_config(android_app); 208 209 android_app->cmdPollSource.id = LOOPER_ID_MAIN; 210 android_app->cmdPollSource.app = android_app; 211 android_app->cmdPollSource.process = process_cmd; 212 android_app->inputPollSource.id = LOOPER_ID_INPUT; 213 android_app->inputPollSource.app = android_app; 214 android_app->inputPollSource.process = process_input; 215 216 ALooper* looper = ALooper_prepare(ALOOPER_PREPARE_ALLOW_NON_CALLBACKS); 217 ALooper_addFd(looper, android_app->msgread, LOOPER_ID_MAIN, ALOOPER_EVENT_INPUT, NULL, 218 &android_app->cmdPollSource); 219 android_app->looper = looper; 220 221 pthread_mutex_lock(&android_app->mutex); 222 android_app->running = 1; 223 pthread_cond_broadcast(&android_app->cond); 224 pthread_mutex_unlock(&android_app->mutex); 225 226 android_main(android_app); 227 228 android_app_destroy(android_app); 229 return NULL; 230 } 231 232 // -------------------------------------------------------------------- 233 // Native activity interaction (called from main thread) 234 // -------------------------------------------------------------------- 235 android_app_create(ANativeActivity * activity,void * savedState,size_t savedStateSize)236 static struct android_app* android_app_create(ANativeActivity* activity, 237 void* savedState, size_t savedStateSize) { 238 struct android_app* android_app = (struct android_app*)malloc(sizeof(struct android_app)); 239 memset(android_app, 0, sizeof(struct android_app)); 240 android_app->activity = activity; 241 242 pthread_mutex_init(&android_app->mutex, NULL); 243 pthread_cond_init(&android_app->cond, NULL); 244 245 if (savedState != NULL) { 246 android_app->savedState = malloc(savedStateSize); 247 android_app->savedStateSize = savedStateSize; 248 memcpy(android_app->savedState, savedState, savedStateSize); 249 } 250 251 int msgpipe[2]; 252 if (pipe(msgpipe)) { 253 LOGI("could not create pipe: %s", strerror(errno)); 254 } 255 android_app->msgread = msgpipe[0]; 256 android_app->msgwrite = msgpipe[1]; 257 258 pthread_attr_t attr; 259 pthread_attr_init(&attr); 260 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); 261 pthread_create(&android_app->thread, &attr, android_app_entry, android_app); 262 263 // Wait for thread to start. 264 pthread_mutex_lock(&android_app->mutex); 265 while (!android_app->running) { 266 pthread_cond_wait(&android_app->cond, &android_app->mutex); 267 } 268 pthread_mutex_unlock(&android_app->mutex); 269 270 return android_app; 271 } 272 android_app_write_cmd(struct android_app * android_app,int8_t cmd)273 static void android_app_write_cmd(struct android_app* android_app, int8_t cmd) { 274 if (write(android_app->msgwrite, &cmd, sizeof(cmd)) != sizeof(cmd)) { 275 LOGI("Failure writing android_app cmd: %s\n", strerror(errno)); 276 } 277 } 278 android_app_set_input(struct android_app * android_app,AInputQueue * inputQueue)279 static void android_app_set_input(struct android_app* android_app, AInputQueue* inputQueue) { 280 pthread_mutex_lock(&android_app->mutex); 281 android_app->pendingInputQueue = inputQueue; 282 android_app_write_cmd(android_app, APP_CMD_INPUT_CHANGED); 283 while (android_app->inputQueue != android_app->pendingInputQueue) { 284 pthread_cond_wait(&android_app->cond, &android_app->mutex); 285 } 286 pthread_mutex_unlock(&android_app->mutex); 287 } 288 android_app_set_window(struct android_app * android_app,ANativeWindow * window)289 static void android_app_set_window(struct android_app* android_app, ANativeWindow* window) { 290 pthread_mutex_lock(&android_app->mutex); 291 if (android_app->pendingWindow != NULL) { 292 android_app_write_cmd(android_app, APP_CMD_TERM_WINDOW); 293 } 294 android_app->pendingWindow = window; 295 if (window != NULL) { 296 android_app_write_cmd(android_app, APP_CMD_INIT_WINDOW); 297 } 298 while (android_app->window != android_app->pendingWindow) { 299 pthread_cond_wait(&android_app->cond, &android_app->mutex); 300 } 301 pthread_mutex_unlock(&android_app->mutex); 302 } 303 android_app_set_activity_state(struct android_app * android_app,int8_t cmd)304 static void android_app_set_activity_state(struct android_app* android_app, int8_t cmd) { 305 pthread_mutex_lock(&android_app->mutex); 306 android_app_write_cmd(android_app, cmd); 307 while (android_app->activityState != cmd) { 308 pthread_cond_wait(&android_app->cond, &android_app->mutex); 309 } 310 pthread_mutex_unlock(&android_app->mutex); 311 } 312 android_app_free(struct android_app * android_app)313 static void android_app_free(struct android_app* android_app) { 314 pthread_mutex_lock(&android_app->mutex); 315 android_app_write_cmd(android_app, APP_CMD_DESTROY); 316 while (!android_app->destroyed) { 317 pthread_cond_wait(&android_app->cond, &android_app->mutex); 318 } 319 pthread_mutex_unlock(&android_app->mutex); 320 321 close(android_app->msgread); 322 close(android_app->msgwrite); 323 pthread_cond_destroy(&android_app->cond); 324 pthread_mutex_destroy(&android_app->mutex); 325 free(android_app); 326 } 327 onDestroy(ANativeActivity * activity)328 static void onDestroy(ANativeActivity* activity) { 329 LOGI("Destroy: %p\n", activity); 330 android_app_free((struct android_app*)activity->instance); 331 } 332 onStart(ANativeActivity * activity)333 static void onStart(ANativeActivity* activity) { 334 LOGI("Start: %p\n", activity); 335 android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_START); 336 } 337 onResume(ANativeActivity * activity)338 static void onResume(ANativeActivity* activity) { 339 LOGI("Resume: %p\n", activity); 340 android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_RESUME); 341 } 342 onSaveInstanceState(ANativeActivity * activity,size_t * outLen)343 static void* onSaveInstanceState(ANativeActivity* activity, size_t* outLen) { 344 struct android_app* android_app = (struct android_app*)activity->instance; 345 void* savedState = NULL; 346 347 LOGI("SaveInstanceState: %p\n", activity); 348 pthread_mutex_lock(&android_app->mutex); 349 android_app->stateSaved = 0; 350 android_app_write_cmd(android_app, APP_CMD_SAVE_STATE); 351 while (!android_app->stateSaved) { 352 pthread_cond_wait(&android_app->cond, &android_app->mutex); 353 } 354 355 if (android_app->savedState != NULL) { 356 savedState = android_app->savedState; 357 *outLen = android_app->savedStateSize; 358 android_app->savedState = NULL; 359 android_app->savedStateSize = 0; 360 } 361 362 pthread_mutex_unlock(&android_app->mutex); 363 364 return savedState; 365 } 366 onPause(ANativeActivity * activity)367 static void onPause(ANativeActivity* activity) { 368 LOGI("Pause: %p\n", activity); 369 android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_PAUSE); 370 } 371 onStop(ANativeActivity * activity)372 static void onStop(ANativeActivity* activity) { 373 LOGI("Stop: %p\n", activity); 374 android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_STOP); 375 } 376 onConfigurationChanged(ANativeActivity * activity)377 static void onConfigurationChanged(ANativeActivity* activity) { 378 struct android_app* android_app = (struct android_app*)activity->instance; 379 LOGI("ConfigurationChanged: %p\n", activity); 380 android_app_write_cmd(android_app, APP_CMD_CONFIG_CHANGED); 381 } 382 onLowMemory(ANativeActivity * activity)383 static void onLowMemory(ANativeActivity* activity) { 384 struct android_app* android_app = (struct android_app*)activity->instance; 385 LOGI("LowMemory: %p\n", activity); 386 android_app_write_cmd(android_app, APP_CMD_LOW_MEMORY); 387 } 388 onWindowFocusChanged(ANativeActivity * activity,int focused)389 static void onWindowFocusChanged(ANativeActivity* activity, int focused) { 390 LOGI("WindowFocusChanged: %p -- %d\n", activity, focused); 391 android_app_write_cmd((struct android_app*)activity->instance, 392 focused ? APP_CMD_GAINED_FOCUS : APP_CMD_LOST_FOCUS); 393 } 394 onNativeWindowCreated(ANativeActivity * activity,ANativeWindow * window)395 static void onNativeWindowCreated(ANativeActivity* activity, ANativeWindow* window) { 396 LOGI("NativeWindowCreated: %p -- %p\n", activity, window); 397 android_app_set_window((struct android_app*)activity->instance, window); 398 } 399 onNativeWindowDestroyed(ANativeActivity * activity,ANativeWindow * window)400 static void onNativeWindowDestroyed(ANativeActivity* activity, ANativeWindow* window) { 401 LOGI("NativeWindowDestroyed: %p -- %p\n", activity, window); 402 android_app_set_window((struct android_app*)activity->instance, NULL); 403 } 404 onInputQueueCreated(ANativeActivity * activity,AInputQueue * queue)405 static void onInputQueueCreated(ANativeActivity* activity, AInputQueue* queue) { 406 LOGI("InputQueueCreated: %p -- %p\n", activity, queue); 407 android_app_set_input((struct android_app*)activity->instance, queue); 408 } 409 onInputQueueDestroyed(ANativeActivity * activity,AInputQueue * queue)410 static void onInputQueueDestroyed(ANativeActivity* activity, AInputQueue* queue) { 411 LOGI("InputQueueDestroyed: %p -- %p\n", activity, queue); 412 android_app_set_input((struct android_app*)activity->instance, NULL); 413 } 414 ANativeActivity_onCreate(ANativeActivity * activity,void * savedState,size_t savedStateSize)415 void ANativeActivity_onCreate(ANativeActivity* activity, 416 void* savedState, size_t savedStateSize) { 417 LOGI("Creating: %p\n", activity); 418 activity->callbacks->onDestroy = onDestroy; 419 activity->callbacks->onStart = onStart; 420 activity->callbacks->onResume = onResume; 421 activity->callbacks->onSaveInstanceState = onSaveInstanceState; 422 activity->callbacks->onPause = onPause; 423 activity->callbacks->onStop = onStop; 424 activity->callbacks->onConfigurationChanged = onConfigurationChanged; 425 activity->callbacks->onLowMemory = onLowMemory; 426 activity->callbacks->onWindowFocusChanged = onWindowFocusChanged; 427 activity->callbacks->onNativeWindowCreated = onNativeWindowCreated; 428 activity->callbacks->onNativeWindowDestroyed = onNativeWindowDestroyed; 429 activity->callbacks->onInputQueueCreated = onInputQueueCreated; 430 activity->callbacks->onInputQueueDestroyed = onInputQueueDestroyed; 431 432 activity->instance = android_app_create(activity, savedState, savedStateSize); 433 } 434