jdk

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/*
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 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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#include <dlfcn.h>
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#include "Dll.h"
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#include "FileUtils.h"
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#include "ErrorHandling.h"
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namespace {
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HMODULE loadLibrary(const tstring& path) {
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    HMODULE h = dlopen(path.c_str(), RTLD_LAZY);
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    if (!h) {
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        JP_THROW(tstrings::any() << "dlopen(" << path
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                << ") failed. Error: " << dlerror());
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    }
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    return h;
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}
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} // namesace
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Dll::Dll(const tstrings::any &libPath): thePath(libPath.tstr()),
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                                        handle(loadLibrary(thePath)) {
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}
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Dll::Dll(const Dll& other): thePath(other.thePath),
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                            handle(loadLibrary(thePath)) {
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}
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void* Dll::getFunction(const std::string &name, bool throwIfNotFound) const {
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    void *ptr = dlsym(handle.get(), name.c_str());
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    if (throwIfNotFound && !ptr) {
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        JP_THROW(tstrings::any() << "dlsym(" << thePath
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                << ", " << name << ") failed. Error: " << dlerror());
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    }
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    return ptr;
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}
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/*static*/
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void Dll::freeLibrary(HMODULE h) {
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    if (h) {
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        dlclose(h);
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    }
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}
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