Merge "Introduce thread-local allowBlocking flag" into rvc-dev am: 2a594c9e64 (d618b17b) · Commits · e / os / android_frameworks_base

core/java/android/os/Binder.java

+21 −0

Original line number	Diff line number	Diff line
		@@ -248,6 +248,27 @@ public class Binder implements IBinder {
		}
		}

		static ThreadLocal<Boolean> sWarnOnBlockingOnCurrentThread =
		ThreadLocal.withInitial(() -> sWarnOnBlocking);

		/**
		* Allow blocking calls for the current thread. See {@link #allowBlocking}.
		*
		* @hide
		*/
		public static void allowBlockingForCurrentThread() {
		sWarnOnBlockingOnCurrentThread.set(false);
		}

		/**
		* Reset the current thread to the default blocking behavior. See {@link #defaultBlocking}.
		*
		* @hide
		*/
		public static void defaultBlockingForCurrentThread() {
		sWarnOnBlockingOnCurrentThread.set(sWarnOnBlocking);
		}

		/**
		* Raw native pointer to JavaBBinderHolder object. Owned by this Java object. Not null.
		*/

+8 −3

Original line number	Diff line number	Diff line
		@@ -479,16 +479,21 @@ public final class BinderProxy implements IBinder {
		public boolean transact(int code, Parcel data, Parcel reply, int flags) throws RemoteException {
		Binder.checkParcel(this, code, data, "Unreasonably large binder buffer");

		if (mWarnOnBlocking && ((flags & FLAG_ONEWAY) == 0)) {
		if (mWarnOnBlocking && ((flags & FLAG_ONEWAY) == 0)
		&& Binder.sWarnOnBlockingOnCurrentThread.get()) {

		// For now, avoid spamming the log by disabling after we've logged
		// about this interface at least once
		mWarnOnBlocking = false;

		if (Build.IS_USERDEBUG) {
		// Log this as a WTF on userdebug builds.
		Log.wtf(Binder.TAG, "Outgoing transactions from this process must be FLAG_ONEWAY",
		Log.wtf(Binder.TAG,
		"Outgoing transactions from this process must be FLAG_ONEWAY",
		new Throwable());
		} else {
		Log.w(Binder.TAG, "Outgoing transactions from this process must be FLAG_ONEWAY",
		Log.w(Binder.TAG,
		"Outgoing transactions from this process must be FLAG_ONEWAY",
		new Throwable());
		}
		}

+7 −1

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@ import android.content.BroadcastReceiver;
		import android.content.Context;
		import android.content.Intent;
		import android.net.Uri;
		import android.os.Binder;
		import android.util.EventLog;
		import android.util.Slog;

		@@ -134,7 +135,12 @@ public class ConfigUpdateInstallReceiver extends BroadcastReceiver {

		private BufferedInputStream getAltContent(Context c, Intent i) throws IOException {
		Uri content = getContentFromIntent(i);
		Binder.allowBlockingForCurrentThread();
		try {
		return new BufferedInputStream(c.getContentResolver().openInputStream(content));
		} finally {
		Binder.defaultBlockingForCurrentThread();
		}
		}

		private byte[] getCurrentContent() {