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      1 /*
      2  * Copyright 2016, The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "wifi"
     18 
     19 #include <hardware_legacy/wifi_hal.h>
     20 #include <nativehelper/ScopedUtfChars.h>
     21 #include <utils/Log.h>
     22 #include <utils/String16.h>
     23 #include <utils/misc.h>
     24 
     25 #include "jni_helper.h"
     26 
     27 namespace android {
     28 
     29 /* JNI Helpers for wifi_hal implementation */
     30 
     31 JNIHelper::JNIHelper(JavaVM *vm)
     32 {
     33     vm->AttachCurrentThread(&mEnv, NULL);
     34     mVM = vm;
     35 }
     36 
     37 JNIHelper::JNIHelper(JNIEnv *env)
     38 {
     39     mVM  = NULL;
     40     mEnv = env;
     41 }
     42 
     43 JNIHelper::~JNIHelper()
     44 {
     45     if (mVM != NULL) {
     46         // mVM->DetachCurrentThread();  /* 'attempting to detach while still running code' */
     47         mVM = NULL;                     /* not really required; but may help debugging */
     48         mEnv = NULL;                    /* not really required; but may help debugging */
     49     }
     50 }
     51 
     52 jobject JNIHelper::newLocalRef(jobject obj) {
     53       return mEnv->NewLocalRef(obj);
     54 }
     55 
     56 void JNIHelper::deleteLocalRef(jobject obj) {
     57       mEnv->DeleteLocalRef(obj);
     58 }
     59 
     60 JNIObject<jbyteArray> JNIHelper::newByteArray(int num) {
     61     return JNIObject<jbyteArray>(*this, mEnv->NewByteArray(num));
     62 }
     63 
     64 void JNIHelper::setByteArrayRegion(jbyteArray array, int from, int to, const jbyte *bytes) {
     65     mEnv->SetByteArrayRegion(array, from, to, bytes);
     66 }
     67 }; // namespace android
     68