wehub-resource-sync
129 lines
4.4 KiB
C++
129 lines
4.4 KiB
C++
// Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef PADDLE_FLUID_INFERENCE_JAVAAPI_NATIVE_JNI_CONVERT_UTIL_H_ // NOLINT
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#define PADDLE_FLUID_INFERENCE_JAVAAPI_NATIVE_JNI_CONVERT_UTIL_H_
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#include <jni.h>
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#include <string.h>
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#include <string>
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#include <vector>
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#define PADDLE_WITH_CUDA PADDLE_WITH_CUDA
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inline std::string jstring_to_cpp_string(JNIEnv *env, jstring jstr) {
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if (!jstr) {
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return "";
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}
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const jclass stringClass = env->GetObjectClass(jstr);
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const jmethodID getBytes =
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env->GetMethodID(stringClass, "getBytes", "(Ljava/lang/String;)[B");
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const jbyteArray stringJbytes = (jbyteArray)env->CallObjectMethod(
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jstr, getBytes, env->NewStringUTF("UTF-8"));
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size_t length = static_cast<size_t>(env->GetArrayLength(stringJbytes));
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jbyte *pBytes = env->GetByteArrayElements(stringJbytes, NULL);
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std::string ret = std::string(reinterpret_cast<char *>(pBytes), length);
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env->ReleaseByteArrayElements(stringJbytes, pBytes, JNI_ABORT);
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env->DeleteLocalRef(stringJbytes);
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env->DeleteLocalRef(stringClass);
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return ret;
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}
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inline jstring cpp_string_to_jstring(JNIEnv *env, std::string str) {
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auto *data = str.c_str();
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jclass strClass = env->FindClass("java/lang/String");
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jmethodID strClassInitMethodID =
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env->GetMethodID(strClass, "<init>", "([BLjava/lang/String;)V");
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jbyteArray bytes = env->NewByteArray(strlen(data));
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env->SetByteArrayRegion(
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bytes, 0, strlen(data), reinterpret_cast<const jbyte *>(data));
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jstring encoding = env->NewStringUTF("UTF-8");
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jstring res = (jstring)(env->NewObject(
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strClass, strClassInitMethodID, bytes, encoding));
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env->DeleteLocalRef(strClass);
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env->DeleteLocalRef(encoding);
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env->DeleteLocalRef(bytes);
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return res;
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}
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inline jboolean cpp_bool_to_jboolean(JNIEnv *env, bool flag) {
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return flag ? JNI_TRUE : JNI_FALSE;
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}
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inline bool jboolean_to_cpp_bool(JNIEnv *env, jboolean flag) {
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return flag == JNI_TRUE;
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}
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inline jfloatArray cpp_array_to_jfloatarray(JNIEnv *env,
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const float *buf,
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int64_t len) {
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jfloatArray result = env->NewFloatArray(len);
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env->SetFloatArrayRegion(result, 0, len, buf);
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return result;
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}
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inline jbyteArray cpp_array_to_jbytearray(JNIEnv *env,
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const int8_t *buf,
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int64_t len) {
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jbyteArray result = env->NewByteArray(len);
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env->SetByteArrayRegion(result, 0, len, buf);
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return result;
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}
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inline jintArray cpp_array_to_jintarray(JNIEnv *env,
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const int *buf,
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int64_t len) {
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jintArray result = env->NewIntArray(len);
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env->SetIntArrayRegion(result, 0, len, buf);
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return result;
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}
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inline jlongArray cpp_array_to_jlongarray(JNIEnv *env,
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const int64_t *buf,
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int64_t len) {
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jlongArray result = env->NewLongArray(len);
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env->SetLongArrayRegion(result, 0, len, buf);
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return result;
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}
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inline jlongArray int64_vector_to_jlongarray(JNIEnv *env,
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const std::vector<int64_t> &vec) {
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jlongArray result = env->NewLongArray(vec.size());
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jlong *buf = new jlong[vec.size()];
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for (size_t i = 0; i < vec.size(); ++i) {
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buf[i] = (jlong)vec[i];
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}
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env->SetLongArrayRegion(result, 0, vec.size(), buf);
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delete[] buf;
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return result;
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}
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inline std::vector<int64_t> jlongarray_to_int64_vector(JNIEnv *env,
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jlongArray dims) {
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int dim_size = env->GetArrayLength(dims);
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jlong *dim_nums = env->GetLongArrayElements(dims, nullptr);
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std::vector<int64_t> dim_vec(dim_nums, dim_nums + dim_size);
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env->ReleaseLongArrayElements(dims, dim_nums, 0);
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return dim_vec;
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}
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#endif // PADDLE_FLUID_INFERENCE_JAVAAPI_NATIVE_JNI_CONVERT_UTIL_H_ // NOLINT
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