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MessageQueue: integrate with glib main loop

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Adds a special treatment for the main Looper to not block in java code,
but instead return to glib managed thread loop. Timeouts in the mainloop
are now handled using g_timeout_add_full().

Also defer Activity construction, so that every thing is set up properly
when the constructor runs.
This commit is contained in:
Julian Winkler
2023-08-08 10:16:17 +02:00
parent c6c4e8b3a2
commit 4491de7f63
7 changed files with 80 additions and 29 deletions
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16
src/api-impl/android/app/Activity.java
View File

@@ -36,7 +36,7 @@ public class Activity extends Context {
* @param className class name of activity or null
* @return instance of main activity class
*/
private static Activity createMainActivity(String className) throws ClassNotFoundException, NoSuchMethodException, SecurityException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, IOException {
private static Activity createMainActivity(String className, long native_window) throws ClassNotFoundException, NoSuchMethodException, SecurityException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, IOException {
if (className == null) {
InputStream inStream = ClassLoader.getSystemClassLoader().getResourceAsStream("AndroidManifest.xml");
AndroidManifestBlock block = AndroidManifestBlock.load(inStream);
@@ -49,11 +49,9 @@ public class Activity extends Context {
}
Class<? extends Activity> cls = Class.forName(className).asSubclass(Activity.class);
Constructor<? extends Activity> constructor = cls.getConstructor();
return constructor.newInstance();
}
protected void set_window(long native_window) {
window.native_window = native_window;
Activity activity = constructor.newInstance();
activity.window.native_window = native_window;
return activity;
}
public Activity() {
@@ -104,12 +102,6 @@ public class Activity extends Context {
protected void onCreate(Bundle savedInstanceState) {
System.out.println("- onCreate - yay!");
/* TODO: this probably belongs elsewhere, but this is our entry point for better or worse */
Looper looper = Looper.myLooper();
if(looper == null) {
Looper.prepareMainLooper();
}
return;
}

6
src/api-impl/android/os/MessageQueue.java
View File

@@ -50,7 +50,7 @@ public final class MessageQueue {
private native static long nativeInit();
private native static void nativeDestroy(long ptr);
private native static void nativePollOnce(long ptr, int timeoutMillis);
private native static boolean nativePollOnce(long ptr, int timeoutMillis);
private native static void nativeWake(long ptr);
private native static boolean nativeIsIdling(long ptr);
@@ -134,7 +134,9 @@ public final class MessageQueue {
// We can assume mPtr != 0 because the loop is obviously still running.
// The looper will not call this method after the loop quits.
nativePollOnce(mPtr, nextPollTimeoutMillis);
if (nativePollOnce(mPtr, nextPollTimeoutMillis)) {
return null; // thread is managed by glib, so return instead of blocking
}
synchronized (this) {
// Try to retrieve the next message. Return if found.