2 * Copyright (C) 2010 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
24 #include <sys/resource.h>
26 #include "android_native_app_glue.h"
27 #include <android/log.h>
29 #define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "threaded_app", __VA_ARGS__))
30 #define LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR, "threaded_app", __VA_ARGS__))
32 /* For debug builds, always enable the debug traces in this library */
34 # define LOGV(...) ((void)__android_log_print(ANDROID_LOG_VERBOSE, "threaded_app", __VA_ARGS__))
36 # define LOGV(...) ((void)0)
39 static void free_saved_state(struct android_app* android_app) {
40 pthread_mutex_lock(&android_app->mutex);
41 if (android_app->savedState != NULL) {
42 free(android_app->savedState);
43 android_app->savedState = NULL;
44 android_app->savedStateSize = 0;
46 pthread_mutex_unlock(&android_app->mutex);
49 int8_t android_app_read_cmd(struct android_app* android_app) {
51 if (read(android_app->msgread, &cmd, sizeof(cmd)) == sizeof(cmd)) {
53 case APP_CMD_SAVE_STATE:
54 free_saved_state(android_app);
59 LOGE("No data on command pipe!");
64 static void print_cur_config(struct android_app* android_app) {
65 char lang[2], country[2];
66 AConfiguration_getLanguage(android_app->config, lang);
67 AConfiguration_getCountry(android_app->config, country);
69 LOGV("Config: mcc=%d mnc=%d lang=%c%c cnt=%c%c orien=%d touch=%d dens=%d "
70 "keys=%d nav=%d keysHid=%d navHid=%d sdk=%d size=%d long=%d "
71 "modetype=%d modenight=%d",
72 AConfiguration_getMcc(android_app->config),
73 AConfiguration_getMnc(android_app->config),
74 lang[0], lang[1], country[0], country[1],
75 AConfiguration_getOrientation(android_app->config),
76 AConfiguration_getTouchscreen(android_app->config),
77 AConfiguration_getDensity(android_app->config),
78 AConfiguration_getKeyboard(android_app->config),
79 AConfiguration_getNavigation(android_app->config),
80 AConfiguration_getKeysHidden(android_app->config),
81 AConfiguration_getNavHidden(android_app->config),
82 AConfiguration_getSdkVersion(android_app->config),
83 AConfiguration_getScreenSize(android_app->config),
84 AConfiguration_getScreenLong(android_app->config),
85 AConfiguration_getUiModeType(android_app->config),
86 AConfiguration_getUiModeNight(android_app->config));
89 void android_app_pre_exec_cmd(struct android_app* android_app, int8_t cmd) {
91 case APP_CMD_INPUT_CHANGED:
92 LOGV("APP_CMD_INPUT_CHANGED\n");
93 pthread_mutex_lock(&android_app->mutex);
94 if (android_app->inputQueue != NULL) {
95 AInputQueue_detachLooper(android_app->inputQueue);
97 android_app->inputQueue = android_app->pendingInputQueue;
98 if (android_app->inputQueue != NULL) {
99 LOGV("Attaching input queue to looper");
100 AInputQueue_attachLooper(android_app->inputQueue,
101 android_app->looper, LOOPER_ID_INPUT, NULL,
102 &android_app->inputPollSource);
104 pthread_cond_broadcast(&android_app->cond);
105 pthread_mutex_unlock(&android_app->mutex);
108 case APP_CMD_INIT_WINDOW:
109 LOGV("APP_CMD_INIT_WINDOW\n");
110 pthread_mutex_lock(&android_app->mutex);
111 android_app->window = android_app->pendingWindow;
112 pthread_cond_broadcast(&android_app->cond);
113 pthread_mutex_unlock(&android_app->mutex);
116 case APP_CMD_TERM_WINDOW:
117 LOGV("APP_CMD_TERM_WINDOW\n");
118 pthread_cond_broadcast(&android_app->cond);
125 LOGV("activityState=%d\n", cmd);
126 pthread_mutex_lock(&android_app->mutex);
127 android_app->activityState = cmd;
128 pthread_cond_broadcast(&android_app->cond);
129 pthread_mutex_unlock(&android_app->mutex);
132 case APP_CMD_CONFIG_CHANGED:
133 LOGV("APP_CMD_CONFIG_CHANGED\n");
134 AConfiguration_fromAssetManager(android_app->config,
135 android_app->activity->assetManager);
136 print_cur_config(android_app);
139 case APP_CMD_DESTROY:
140 LOGV("APP_CMD_DESTROY\n");
141 android_app->destroyRequested = 1;
146 void android_app_post_exec_cmd(struct android_app* android_app, int8_t cmd) {
148 case APP_CMD_TERM_WINDOW:
149 LOGV("APP_CMD_TERM_WINDOW\n");
150 pthread_mutex_lock(&android_app->mutex);
151 android_app->window = NULL;
152 pthread_cond_broadcast(&android_app->cond);
153 pthread_mutex_unlock(&android_app->mutex);
156 case APP_CMD_SAVE_STATE:
157 LOGV("APP_CMD_SAVE_STATE\n");
158 pthread_mutex_lock(&android_app->mutex);
159 android_app->stateSaved = 1;
160 pthread_cond_broadcast(&android_app->cond);
161 pthread_mutex_unlock(&android_app->mutex);
165 free_saved_state(android_app);
174 static void android_app_destroy(struct android_app* android_app) {
175 LOGV("android_app_destroy!");
176 free_saved_state(android_app);
177 pthread_mutex_lock(&android_app->mutex);
178 if (android_app->inputQueue != NULL) {
179 AInputQueue_detachLooper(android_app->inputQueue);
181 AConfiguration_delete(android_app->config);
182 android_app->destroyed = 1;
183 pthread_cond_broadcast(&android_app->cond);
184 pthread_mutex_unlock(&android_app->mutex);
185 /* Can't touch android_app object after this. */
188 static void process_input(struct android_app* app, struct android_poll_source* source) {
189 AInputEvent* event = NULL;
190 while (AInputQueue_getEvent(app->inputQueue, &event) >= 0) {
191 LOGV("New input event: type=%d\n", AInputEvent_getType(event));
192 if (AInputQueue_preDispatchEvent(app->inputQueue, event)) {
196 if (app->onInputEvent != NULL) handled = app->onInputEvent(app, event);
197 AInputQueue_finishEvent(app->inputQueue, event, handled);
201 static void process_cmd(struct android_app* app, struct android_poll_source* source) {
202 int8_t cmd = android_app_read_cmd(app);
203 android_app_pre_exec_cmd(app, cmd);
204 if (app->onAppCmd != NULL) app->onAppCmd(app, cmd);
205 android_app_post_exec_cmd(app, cmd);
208 static void* android_app_entry(void* param) {
209 struct android_app* android_app = (struct android_app*)param;
211 android_app->config = AConfiguration_new();
212 AConfiguration_fromAssetManager(android_app->config, android_app->activity->assetManager);
214 print_cur_config(android_app);
216 android_app->cmdPollSource.id = LOOPER_ID_MAIN;
217 android_app->cmdPollSource.app = android_app;
218 android_app->cmdPollSource.process = process_cmd;
219 android_app->inputPollSource.id = LOOPER_ID_INPUT;
220 android_app->inputPollSource.app = android_app;
221 android_app->inputPollSource.process = process_input;
223 ALooper* looper = ALooper_prepare(ALOOPER_PREPARE_ALLOW_NON_CALLBACKS);
224 ALooper_addFd(looper, android_app->msgread, LOOPER_ID_MAIN, ALOOPER_EVENT_INPUT, NULL,
225 &android_app->cmdPollSource);
226 android_app->looper = looper;
228 pthread_mutex_lock(&android_app->mutex);
229 android_app->running = 1;
230 pthread_cond_broadcast(&android_app->cond);
231 pthread_mutex_unlock(&android_app->mutex);
233 android_main(android_app);
235 android_app_destroy(android_app);
239 /* --------------------------------------------------------------------
240 * Native activity interaction (called from main thread)
241 * --------------------------------------------------------------------
244 static struct android_app* android_app_create(ANativeActivity* activity,
245 void* savedState, size_t savedStateSize) {
246 struct android_app* android_app = (struct android_app*)malloc(sizeof(struct android_app));
247 memset(android_app, 0, sizeof(struct android_app));
248 android_app->activity = activity;
250 pthread_mutex_init(&android_app->mutex, NULL);
251 pthread_cond_init(&android_app->cond, NULL);
253 if (savedState != NULL) {
254 android_app->savedState = malloc(savedStateSize);
255 android_app->savedStateSize = savedStateSize;
256 memcpy(android_app->savedState, savedState, savedStateSize);
261 LOGE("could not create pipe: %s", strerror(errno));
264 android_app->msgread = msgpipe[0];
265 android_app->msgwrite = msgpipe[1];
268 pthread_attr_init(&attr);
269 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
270 pthread_create(&android_app->thread, &attr, android_app_entry, android_app);
272 /* Wait for thread to start. */
273 pthread_mutex_lock(&android_app->mutex);
274 while (!android_app->running) {
275 pthread_cond_wait(&android_app->cond, &android_app->mutex);
277 pthread_mutex_unlock(&android_app->mutex);
282 static void android_app_write_cmd(struct android_app* android_app, int8_t cmd) {
283 if (write(android_app->msgwrite, &cmd, sizeof(cmd)) != sizeof(cmd)) {
284 LOGE("Failure writing android_app cmd: %s\n", strerror(errno));
288 static void android_app_set_input(struct android_app* android_app, AInputQueue* inputQueue) {
289 pthread_mutex_lock(&android_app->mutex);
290 android_app->pendingInputQueue = inputQueue;
291 android_app_write_cmd(android_app, APP_CMD_INPUT_CHANGED);
292 while (android_app->inputQueue != android_app->pendingInputQueue) {
293 pthread_cond_wait(&android_app->cond, &android_app->mutex);
295 pthread_mutex_unlock(&android_app->mutex);
298 static void android_app_set_window(struct android_app* android_app, ANativeWindow* window) {
299 pthread_mutex_lock(&android_app->mutex);
300 if (android_app->pendingWindow != NULL) {
301 android_app_write_cmd(android_app, APP_CMD_TERM_WINDOW);
303 android_app->pendingWindow = window;
304 if (window != NULL) {
305 android_app_write_cmd(android_app, APP_CMD_INIT_WINDOW);
307 while (android_app->window != android_app->pendingWindow) {
308 pthread_cond_wait(&android_app->cond, &android_app->mutex);
310 pthread_mutex_unlock(&android_app->mutex);
313 static void android_app_set_activity_state(struct android_app* android_app, int8_t cmd) {
314 pthread_mutex_lock(&android_app->mutex);
315 android_app_write_cmd(android_app, cmd);
316 while (android_app->activityState != cmd) {
317 pthread_cond_wait(&android_app->cond, &android_app->mutex);
319 pthread_mutex_unlock(&android_app->mutex);
322 static void android_app_free(struct android_app* android_app) {
323 pthread_mutex_lock(&android_app->mutex);
324 android_app_write_cmd(android_app, APP_CMD_DESTROY);
325 while (!android_app->destroyed) {
326 pthread_cond_wait(&android_app->cond, &android_app->mutex);
328 pthread_mutex_unlock(&android_app->mutex);
330 close(android_app->msgread);
331 close(android_app->msgwrite);
332 pthread_cond_destroy(&android_app->cond);
333 pthread_mutex_destroy(&android_app->mutex);
337 static void onDestroy(ANativeActivity* activity) {
338 LOGV("Destroy: %p\n", (void*)activity);
339 android_app_free((struct android_app*)activity->instance);
342 static void onStart(ANativeActivity* activity) {
343 LOGV("Start: %p\n", (void*)activity);
344 android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_START);
347 static void onResume(ANativeActivity* activity) {
348 LOGV("Resume: %p\n", (void*)activity);
349 android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_RESUME);
352 static void* onSaveInstanceState(ANativeActivity* activity, size_t* outLen) {
353 struct android_app* android_app = (struct android_app*)activity->instance;
354 void* savedState = NULL;
356 LOGV("SaveInstanceState: %p\n", (void*)activity);
357 pthread_mutex_lock(&android_app->mutex);
358 android_app->stateSaved = 0;
359 android_app_write_cmd(android_app, APP_CMD_SAVE_STATE);
360 while (!android_app->stateSaved) {
361 pthread_cond_wait(&android_app->cond, &android_app->mutex);
364 if (android_app->savedState != NULL) {
365 savedState = android_app->savedState;
366 *outLen = android_app->savedStateSize;
367 android_app->savedState = NULL;
368 android_app->savedStateSize = 0;
371 pthread_mutex_unlock(&android_app->mutex);
376 static void onPause(ANativeActivity* activity) {
377 LOGV("Pause: %p\n", (void*)activity);
378 android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_PAUSE);
381 static void onStop(ANativeActivity* activity) {
382 LOGV("Stop: %p\n", (void*)activity);
383 android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_STOP);
386 static void onConfigurationChanged(ANativeActivity* activity) {
387 struct android_app* android_app = (struct android_app*)activity->instance;
388 LOGV("ConfigurationChanged: %p\n", (void*)activity);
389 android_app_write_cmd(android_app, APP_CMD_CONFIG_CHANGED);
392 static void onLowMemory(ANativeActivity* activity) {
393 struct android_app* android_app = (struct android_app*)activity->instance;
394 LOGV("LowMemory: %p\n", (void*)activity);
395 android_app_write_cmd(android_app, APP_CMD_LOW_MEMORY);
398 static void onWindowFocusChanged(ANativeActivity* activity, int focused) {
399 LOGV("WindowFocusChanged: %p -- %d\n", (void*)activity, focused);
400 android_app_write_cmd((struct android_app*)activity->instance,
401 focused ? APP_CMD_GAINED_FOCUS : APP_CMD_LOST_FOCUS);
404 static void onNativeWindowCreated(ANativeActivity* activity, ANativeWindow* window) {
405 LOGV("NativeWindowCreated: %p -- %p\n", (void*)activity, (void*)window);
406 android_app_set_window((struct android_app*)activity->instance, window);
409 static void onNativeWindowDestroyed(ANativeActivity* activity, ANativeWindow* window) {
410 LOGV("NativeWindowDestroyed: %p -- %p\n", (void*)activity, (void*)window);
411 android_app_set_window((struct android_app*)activity->instance, NULL);
414 static void onInputQueueCreated(ANativeActivity* activity, AInputQueue* queue) {
415 LOGV("InputQueueCreated: %p -- %p\n", (void*)activity, (void*)queue);
416 android_app_set_input((struct android_app*)activity->instance, queue);
419 static void onInputQueueDestroyed(ANativeActivity* activity, AInputQueue* queue) {
420 LOGV("InputQueueDestroyed: %p -- %p\n", (void*)activity, (void*)queue);
421 android_app_set_input((struct android_app*)activity->instance, NULL);
425 void ANativeActivity_onCreate(ANativeActivity* activity, void* savedState,
426 size_t savedStateSize) {
427 LOGV("Creating: %p\n", (void*)activity);
428 activity->callbacks->onDestroy = onDestroy;
429 activity->callbacks->onStart = onStart;
430 activity->callbacks->onResume = onResume;
431 activity->callbacks->onSaveInstanceState = onSaveInstanceState;
432 activity->callbacks->onPause = onPause;
433 activity->callbacks->onStop = onStop;
434 activity->callbacks->onConfigurationChanged = onConfigurationChanged;
435 activity->callbacks->onLowMemory = onLowMemory;
436 activity->callbacks->onWindowFocusChanged = onWindowFocusChanged;
437 activity->callbacks->onNativeWindowCreated = onNativeWindowCreated;
438 activity->callbacks->onNativeWindowDestroyed = onNativeWindowDestroyed;
439 activity->callbacks->onInputQueueCreated = onInputQueueCreated;
440 activity->callbacks->onInputQueueDestroyed = onInputQueueDestroyed;
442 activity->instance = android_app_create(activity, savedState, savedStateSize);