mirror of https://github.com/Icinga/icinga2.git
92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2017 Icinga Development Team (https://www.icinga.com/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; 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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#include "base/loader.hpp"
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#include "base/logger.hpp"
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#include "base/exception.hpp"
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#include "base/application.hpp"
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using namespace icinga;
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/**
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* Loads the specified library.
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*
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* @param library The name of the library.
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*/
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void Loader::LoadExtensionLibrary(const String& library)
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{
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String path;
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#if defined(_WIN32)
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path = library + ".dll";
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#elif defined(__APPLE__)
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path = "lib" + library + "." + Application::GetAppSpecVersion() + ".dylib";
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#else /* __APPLE__ */
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path = "lib" + library + ".so." + Application::GetAppSpecVersion();
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#endif /* _WIN32 */
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Log(LogNotice, "Loader")
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<< "Loading library '" << path << "'";
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#ifdef _WIN32
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HMODULE hModule = LoadLibrary(path.CStr());
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if (hModule == NULL) {
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BOOST_THROW_EXCEPTION(win32_error()
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<< boost::errinfo_api_function("LoadLibrary")
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<< errinfo_win32_error(GetLastError())
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<< boost::errinfo_file_name(path));
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}
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#else /* _WIN32 */
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void *hModule = dlopen(path.CStr(), RTLD_NOW | RTLD_GLOBAL);
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if (hModule == NULL) {
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BOOST_THROW_EXCEPTION(std::runtime_error("Could not load library '" + path + "': " + dlerror()));
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}
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#endif /* _WIN32 */
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ExecuteDeferredInitializers();
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}
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boost::thread_specific_ptr<std::priority_queue<DeferredInitializer> >& Loader::GetDeferredInitializers(void)
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{
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static boost::thread_specific_ptr<std::priority_queue<DeferredInitializer> > initializers;
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return initializers;
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}
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void Loader::ExecuteDeferredInitializers(void)
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{
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if (!GetDeferredInitializers().get())
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return;
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while (!GetDeferredInitializers().get()->empty()) {
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DeferredInitializer initializer = GetDeferredInitializers().get()->top();
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GetDeferredInitializers().get()->pop();
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initializer();
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}
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}
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void Loader::AddDeferredInitializer(const boost::function<void(void)>& callback, int priority)
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{
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if (!GetDeferredInitializers().get())
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GetDeferredInitializers().reset(new std::priority_queue<DeferredInitializer>());
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GetDeferredInitializers().get()->push(DeferredInitializer(callback, priority));
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}
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