servicemanager: notifications
You can now register and receive notifications for new services.
Eye towards:
- avoiding while(true) getService loops
- need it to make AIDL dynamic HALs
- need it for feature parity w/ HIDL
Bug: 136027762
Test: servicemanager_test
Change-Id: Iffbf984e87214aa9c9b7af8a5ae682e127ba40a5
diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index 027418a..86f19c5 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -145,6 +145,7 @@
name: "libbinder_aidl",
srcs: [
"aidl/android/content/pm/IPackageManagerNative.aidl",
+ "aidl/android/os/IServiceCallback.aidl",
"aidl/android/os/IServiceManager.aidl",
],
path: "aidl",
diff --git a/libs/binder/aidl/android/os/IServiceCallback.aidl b/libs/binder/aidl/android/os/IServiceCallback.aidl
new file mode 100644
index 0000000..b29dfed
--- /dev/null
+++ b/libs/binder/aidl/android/os/IServiceCallback.aidl
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.os;
+
+/**
+ * @hide
+ */
+oneway interface IServiceCallback {
+ /**
+ * Called when a service is registered.
+ *
+ * @param name the service name that has been registered with
+ * @param binder the binder that is registered
+ */
+ void onRegistration(@utf8InCpp String name, IBinder binder);
+}
diff --git a/libs/binder/aidl/android/os/IServiceManager.aidl b/libs/binder/aidl/android/os/IServiceManager.aidl
index 50a72aa..60c2cce 100644
--- a/libs/binder/aidl/android/os/IServiceManager.aidl
+++ b/libs/binder/aidl/android/os/IServiceManager.aidl
@@ -16,6 +16,8 @@
package android.os;
+import android.os.IServiceCallback;
+
/**
* Basic interface for finding and publishing system services.
*
@@ -77,4 +79,14 @@
* Return a list of all currently running services.
*/
@utf8InCpp String[] listServices(int dumpPriority);
+
+ /**
+ * Request a callback when a service is registered.
+ */
+ void registerForNotifications(@utf8InCpp String name, IServiceCallback callback);
+
+ /**
+ * Unregisters all requests for notifications for a specific callback.
+ */
+ void unregisterForNotifications(@utf8InCpp String name, IServiceCallback callback);
}