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/*
* 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.
*/
#define LOG_NAMESPACE "StatsLog.tag."
#define LOG_TAG "StatsLog_println"
#include "jni.h"
#include <log/log.h>
#include <nativehelper/JNIHelp.h>
#include "stats_buffer_writer.h"
namespace android {
static void android_util_StatsLog_write(JNIEnv* env, jobject clazz, jbyteArray buf, jint size,
jint atomId) {
if (buf == NULL) {
return;
}
jint actualSize = env->GetArrayLength(buf);
if (actualSize < size) {
return;
}
jbyte* bufferArray = env->GetByteArrayElements(buf, NULL);
if (bufferArray == NULL) {
return;
}
write_buffer_to_statsd((void*) bufferArray, size, atomId);
env->ReleaseByteArrayElements(buf, bufferArray, 0);
}
/*
* JNI registration.
*/
static const JNINativeMethod gMethods[] = {
/* name, signature, funcPtr */
{ "writeImpl", "([BII)V", (void*) android_util_StatsLog_write },
};
int register_android_util_StatsLog(JNIEnv* env)
{
return jniRegisterNativeMethods(env, "android/util/StatsLog", gMethods, NELEM(gMethods));
}
}; // namespace android
/*
* JNI Initialization
*/
jint JNI_OnLoad(JavaVM* jvm, void* reserved) {
JNIEnv* e;
int status;
ALOGV("statsd : loading JNI\n");
// Check JNI version
if (jvm->GetEnv((void**)&e, JNI_VERSION_1_4)) {
ALOGE("JNI version mismatch error");
return JNI_ERR;
}
status = android::register_android_util_StatsLog(e);
if (status < 0) {
ALOGE("jni statsd registration failure, status: %d", status);
return JNI_ERR;
}
return JNI_VERSION_1_4;
}
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