| /* |
| * 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 |