55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#pragma once
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#include <dlfcn.h>
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#include <jni.h>
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#include <memory>
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#include <string>
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#include <string_view>
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#include <type_traits>
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namespace doris {
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class Status;
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class LibJVMLoader {
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public:
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LibJVMLoader(const LibJVMLoader&) = delete;
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LibJVMLoader& operator=(const LibJVMLoader&) = delete;
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static LibJVMLoader& instance();
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Status load();
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using JNI_GetCreatedJavaVMsPointer = std::add_pointer_t<decltype(::JNI_GetCreatedJavaVMs)>;
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static JNI_GetCreatedJavaVMsPointer JNI_GetCreatedJavaVMs;
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using JNI_CreateJavaVMPointer = std::add_pointer_t<decltype(::JNI_CreateJavaVM)>;
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static JNI_CreateJavaVMPointer JNI_CreateJavaVM;
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private:
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explicit LibJVMLoader(std::string_view library)
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: _library(library), _handle(nullptr, nullptr) {}
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const std::string _library;
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std::unique_ptr<void, void (*)(void*)> _handle;
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};
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} // namespace doris
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