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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* \file
* \brief JNI function implementations
#include "ml_dmlc_mxnet_init_native_c_api.h" // generated by javah
#include <nnvm/c_api.h>
#include <mxnet/c_api.h>
JNIEXPORT jint JNICALL Java_ml_dmlc_mxnet_init_LibInfo_mxSymbolListAtomicSymbolCreators
(JNIEnv *env, jobject obj, jobject symbolList) {
mx_uint outSize;
AtomicSymbolCreator *outArray;
int ret = MXSymbolListAtomicSymbolCreators(&outSize, &outArray);
jclass longCls = env->FindClass("java/lang/Long");
jmethodID longConst = env->GetMethodID(longCls, "<init>", "(J)V");
jclass listCls = env->FindClass("scala/collection/mutable/ListBuffer");
jmethodID listAppend = env->GetMethodID(listCls,
"$plus$eq", "(Ljava/lang/Object;)Lscala/collection/mutable/ListBuffer;");
for (size_t i = 0; i < outSize; ++i) {
env->CallObjectMethod(symbolList, listAppend,
env->NewObject(longCls, longConst, outArray[i]));
return ret;
JNIEXPORT jint JNICALL Java_ml_dmlc_mxnet_init_LibInfo_mxSymbolGetAtomicSymbolInfo
(JNIEnv *env, jobject obj, jlong symbolPtr, jobject name, jobject desc, jobject numArgs,
jobject argNames, jobject argTypes, jobject argDescs, jobject keyVarNumArgs) {
const char *cName;
const char *cDesc;
mx_uint cNumArgs;
const char **cArgNames;
const char **cArgTypes;
const char **cArgDescs;
const char *cKeyVarNumArgs;
int ret = MXSymbolGetAtomicSymbolInfo(reinterpret_cast<AtomicSymbolCreator>(symbolPtr),
&cName, &cDesc, &cNumArgs,
&cArgNames, &cArgTypes, &cArgDescs,
jclass refIntClass = env->FindClass("ml/dmlc/mxnet/init/Base$RefInt");
jfieldID valueInt = env->GetFieldID(refIntClass, "value", "I");
jclass refStringClass = env->FindClass("ml/dmlc/mxnet/init/Base$RefString");
jfieldID valueStr = env->GetFieldID(refStringClass, "value", "Ljava/lang/String;");
// scala.collection.mutable.ListBuffer append method
jclass listClass = env->FindClass("scala/collection/mutable/ListBuffer");
jmethodID listAppend = env->GetMethodID(listClass, "$plus$eq",
env->SetObjectField(name, valueStr, env->NewStringUTF(cName));
env->SetObjectField(desc, valueStr, env->NewStringUTF(cDesc));
env->SetObjectField(keyVarNumArgs, valueStr, env->NewStringUTF(cKeyVarNumArgs));
env->SetIntField(numArgs, valueInt, static_cast<jint>(cNumArgs));
for (size_t i = 0; i < cNumArgs; ++i) {
env->CallObjectMethod(argNames, listAppend, env->NewStringUTF(cArgNames[i]));
env->CallObjectMethod(argTypes, listAppend, env->NewStringUTF(cArgTypes[i]));
env->CallObjectMethod(argDescs, listAppend, env->NewStringUTF(cArgDescs[i]));
return ret;
JNIEXPORT jint JNICALL Java_ml_dmlc_mxnet_init_LibInfo_mxListAllOpNames
(JNIEnv *env, jobject obj, jobject nameList) {
mx_uint outSize;
const char **outArray;
int ret = MXListAllOpNames(&outSize, &outArray);
jclass listCls = env->FindClass("scala/collection/mutable/ListBuffer");
jmethodID listAppend = env->GetMethodID(listCls,
"$plus$eq", "(Ljava/lang/Object;)Lscala/collection/mutable/ListBuffer;");
for (size_t i = 0; i < outSize; ++i) {
env->CallObjectMethod(nameList, listAppend, env->NewStringUTF(outArray[i]));
return ret;
JNIEXPORT jint JNICALL Java_ml_dmlc_mxnet_init_LibInfo_nnGetOpHandle
(JNIEnv *env, jobject obj, jstring jopname, jobject jhandle) {
OpHandle handle;
const char *opname = env->GetStringUTFChars(jopname, 0);
int ret = NNGetOpHandle(opname, &handle);
env->ReleaseStringUTFChars(jopname, opname);
jclass refClass = env->FindClass("ml/dmlc/mxnet/init/Base$RefLong");
jfieldID refFid = env->GetFieldID(refClass, "value", "J");
env->SetLongField(jhandle, refFid, reinterpret_cast<jlong>(handle));
return ret;