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1 /**
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2 * SPDX-FileCopyrightText: 2023-2024 Sebastien Jodogne, UCLouvain, Belgium
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3 * SPDX-License-Identifier: GPL-3.0-or-later
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4 */
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5
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6 /**
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7 * Java plugin for Orthanc
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8 * Copyright (C) 2023-2024 Sebastien Jodogne, UCLouvain, Belgium
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9 *
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10 * This program is free software: you can redistribute it and/or
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11 * modify it under the terms of the GNU General Public License as
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12 * published by the Free Software Foundation, either version 3 of the
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13 * License, or (at your option) any later version.
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14 *
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15 * This program is distributed in the hope that it will be useful, but
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16 * WITHOUT ANY WARRANTY; without even the implied warranty of
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17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 * General Public License for more details.
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19 *
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20 * You should have received a copy of the GNU General Public License
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21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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22 **/
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23
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24
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25 #include "JavaVirtualMachine.h"
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26
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27 #include <cassert>
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28 #include <stdexcept>
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29 #include <vector>
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30
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31
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32 JavaVirtualMachine::JavaVirtualMachine(const std::string& classPath)
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33 {
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34 std::string classPathOption = "-Djava.class.path=" + classPath;
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35
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36 std::vector<JavaVMOption> options;
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37
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38 options.resize(1);
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39 options[0].optionString = const_cast<char*>(classPathOption.c_str());
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40 options[0].extraInfo = NULL;
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41
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42 #if !defined(NDEBUG)
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43 // Debug mode
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44 {
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45 JavaVMOption option;
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46 option.optionString = const_cast<char*>("-Xcheck:jni");
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47 option.extraInfo = NULL;
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48 options.push_back(option);
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49 }
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50 #endif
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51
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52 JavaVMInitArgs vm_args;
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53 vm_args.version = JNI_VERSION_1_6;
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54 vm_args.nOptions = options.size();
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55 vm_args.options = (options.empty() ? NULL : &options[0]);
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56 vm_args.ignoreUnrecognized = false;
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57
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58 JNIEnv* env = NULL;
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59 jint res = JNI_CreateJavaVM(&jvm_, (void **) &env, &vm_args);
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60 if (res != JNI_OK ||
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61 jvm_ == NULL ||
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62 env == NULL)
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63 {
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64 throw std::runtime_error("Cannot create the JVM");
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65 }
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66 }
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67
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68
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69 JavaVirtualMachine::~JavaVirtualMachine()
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70 {
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71 jvm_->DestroyJavaVM();
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72 }
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73
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74
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75 JavaVM& JavaVirtualMachine::GetValue()
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76 {
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77 assert(jvm_ != NULL);
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78 return *jvm_;
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79 }
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