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annotate Sources/ICallbackRegistration.cpp @ 91:55c41aa7053b

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On Orthanc stopping, wait for all the queued events to have been processed
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 19 Aug 2021 14:18:23 +0200
parents 32de70a1e4c7
children eb6ac5a801d1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /**
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2 * Python plugin for Orthanc
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3 * Copyright (C) 2020-2021 Osimis S.A., Belgium
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4 *
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5 * This program is free software: you can redistribute it and/or
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6 * modify it under the terms of the GNU Affero General Public License
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7 * as published by the Free Software Foundation, either version 3 of
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8 * the License, or (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful, but
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11 * WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Affero General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Affero General Public License
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 **/
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20 #include "ICallbackRegistration.h"
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22 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h"
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23 #include "PythonLock.h"
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25 PyObject *ICallbackRegistration::Apply(ICallbackRegistration& registration,
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26 PyObject* args,
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27 PyObject*& singletonCallback,
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28 const std::string& details)
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29 {
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30 // https://docs.python.org/3/extending/extending.html#calling-python-functions-from-c
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31 PyObject* callback = NULL;
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33 if (!PyArg_ParseTuple(args, "O", &callback) ||
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34 callback == NULL)
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35 {
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36 const std::string message = "Expected a callback function to register one " + details;
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37 PyErr_SetString(PyExc_ValueError, message.c_str());
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38 return NULL;
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39 }
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40 else if (singletonCallback != NULL)
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41 {
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42 const std::string message = "Can only register one " + details;
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43 PyErr_SetString(PyExc_RuntimeError, message.c_str());
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44 return NULL;
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45 }
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46 else
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47 {
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48 OrthancPlugins::LogInfo("Registering one " + details);
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49 registration.Register();
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51 singletonCallback = callback;
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52 Py_XINCREF(singletonCallback);
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54 Py_INCREF(Py_None);
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55 return Py_None;
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56 }
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57 }
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60 void ICallbackRegistration::Unregister(PyObject*& singletonCallback)
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61 {
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62 PythonLock lock;
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64 if (singletonCallback != NULL)
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65 {
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66 Py_XDECREF(singletonCallback);
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67 }
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68 }