1 files changed, 70 insertions, 0 deletions
diff --git a/core/jni/android_os_UEventObserver.cpp b/core/jni/android_os_UEventObserver.cpp
new file mode 100644
index 0000000..cac4372
--- /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/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