Mercurial > hg > orthanc-python
view Sources/PythonModule.cpp @ 8:dac0f23f85c2
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 31 Mar 2020 12:15:46 +0200 |
parents | 7ed502b17b8f |
children | fd58eb5749ed |
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/** * Python plugin for Orthanc * Copyright (C) 2017-2020 Osimis S.A., Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Affero General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #include "PythonModule.h" #include "PythonString.h" #include <OrthancPluginCppWrapper.h> #include <boost/thread/mutex.hpp> #include <set> #if PY_VERSION_HEX < 0x03070000 /* 3.7.0 */ static PythonObject* GetModule(PythonLock& lock, const std::string& utf8Name) { static boost::mutex mutex_; static std::set<std::string> loadedModules_; boost::mutex::scoped_lock l(mutex_); if (loadedModules_.find(utf8Name) == loadedModules_.end()) { PythonString tmp(lock, utf8Name); // The module is not imported yet loadedModules_.insert(utf8Name); return new PythonObject(lock, PyImport_Import(tmp.GetPyObject()), false); } else { // PyImport_AddModule returns a borrowed reference return new PythonObject(lock, PyImport_AddModule(utf8Name.c_str()), true); } } #else // The "PyImport_GetModule()" function was introduced in Python // 3.7.0 static PythonObject* GetModule(PythonLock& lock, const std::string& utf8Name) { PythonString tmp(lock, utf8Name); PyObject* module = PyImport_GetModule(tmp.GetPyObject()); if (module != NULL) { // The module was already imported by a previous call: Reuse it return new PythonObject(lock, module); } else { // This is the first time this module is used: Import it return new PythonObject(lock, PyImport_Import(tmp.GetPyObject())); } } #endif PythonModule::PythonModule(PythonLock& lock, const std::string& utf8Name) : lock_(lock), name_(utf8Name) { module_.reset(GetModule(lock, utf8Name)); } bool PythonModule::IsValid() const { return (module_.get() != NULL && module_->IsValid()); } PythonObject& PythonModule::GetObject() const { if (!IsValid()) { ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls); } else { return *module_; } } PyObject* PythonModule::GetPyObject() const { if (!IsValid()) { ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls); } else { return module_->GetPyObject(); } }