auto import from //depot/cupcake/@135843
diff --git a/core/jni/android_os_UEventObserver.cpp b/core/jni/android_os_UEventObserver.cpp
new file mode 100644
index 0000000..7f31b00
--- /dev/null
+++ b/core/jni/android_os_UEventObserver.cpp
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2008 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.
+ */
+
+#define LOG_TAG "UEventObserver"
+#include "utils/Log.h"
+
+#include "hardware_legacy/uevent.h"
+#include "jni.h"
+#include "JNIHelp.h"
+#include "android_runtime/AndroidRuntime.h"
+
+namespace android
+{
+
+static void
+android_os_UEventObserver_native_setup(JNIEnv *env, jclass clazz)
+{
+ if (!uevent_init()) {
+ jniThrowException(env, "java/lang/RuntimeException",
+ "Unable to open socket for UEventObserver");
+ }
+}
+
+static int
+android_os_UEventObserver_next_event(JNIEnv *env, jclass clazz, jbyteArray jbuffer)
+{
+ int buf_sz = env->GetArrayLength(jbuffer);
+ char *buffer = (char*)env->GetByteArrayElements(jbuffer, NULL);
+
+ int length = uevent_next_event(buffer, buf_sz - 1);
+
+ env->ReleaseByteArrayElements(jbuffer, (jbyte*)buffer, 0);
+
+ return length;
+}
+
+static JNINativeMethod gMethods[] = {
+ {"native_setup", "()V", (void *)android_os_UEventObserver_native_setup},
+ {"next_event", "([B)I", (void *)android_os_UEventObserver_next_event},
+};
+
+
+int register_android_os_UEventObserver(JNIEnv *env)
+{
+ jclass clazz;
+
+ clazz = env->FindClass("android/os/UEventObserver");
+ if (clazz == NULL) {
+ LOGE("Can't find android/os/UEventObserver");
+ return -1;
+ }
+
+ return AndroidRuntime::registerNativeMethods(env,
+ "android/os/UEventObserver", gMethods, NELEM(gMethods));
+}
+
+} // namespace android