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annotate Python/importdl.c @ 13658:f79434ee41fa legacy-trunk

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Mass ANSIfication of function definitions. Doesn't cover all 'extern' declarations yet, those come later.
author Thomas Wouters <thomas@python.org>
date Sat, 22 Jul 2000 18:47:25 +0000
parents 87ee82e5c56d
children 6f6f965c5e2d
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1 /***********************************************************
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2 Copyright (c) 2000, BeOpen.com.
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3 Copyright (c) 1995-2000, Corporation for National Research Initiatives.
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4 Copyright (c) 1990-1995, Stichting Mathematisch Centrum.
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5 All rights reserved.
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6
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7 See the file "Misc/COPYRIGHT" for information on usage and
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8 redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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9 ******************************************************************/
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10
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11 /* Support for dynamic loading of extension modules */
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12
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13 #include "Python.h"
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14
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15 /* ./configure sets HAVE_DYNAMIC_LOADING if dynamic loading of modules is
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16 supported on this platform. configure will then compile and link in one
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17 of the dynload_*.c files, as appropriate. We will call a function in
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18 those modules to get a function pointer to the module's init function.
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19 */
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20 #ifdef HAVE_DYNAMIC_LOADING
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21
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22 #include "importdl.h"
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23
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24 extern dl_funcptr _PyImport_GetDynLoadFunc(const char *name,
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25 const char *shortname,
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26 const char *pathname, FILE *fp);
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27
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29
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30 PyObject *
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31 _PyImport_LoadDynamicModule(char *name, char *pathname, FILE *fp)
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32 {
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33 PyObject *m, *d, *s;
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34 char *lastdot, *shortname, *packagecontext;
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35 dl_funcptr p;
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36
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37 if ((m = _PyImport_FindExtension(name, pathname)) != NULL) {
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38 Py_INCREF(m);
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39 return m;
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40 }
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41 lastdot = strrchr(name, '.');
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42 if (lastdot == NULL) {
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43 packagecontext = NULL;
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44 shortname = name;
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45 }
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46 else {
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47 packagecontext = name;
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48 shortname = lastdot+1;
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49 }
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50
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51 p = _PyImport_GetDynLoadFunc(name, shortname, pathname, fp);
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52 if (PyErr_Occurred())
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53 return NULL;
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54 if (p == NULL) {
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55 PyErr_Format(PyExc_ImportError,
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56 "dynamic module does not define init function (init%.200s)",
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57 shortname);
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58 return NULL;
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59 }
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60 _Py_PackageContext = packagecontext;
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61 (*p)();
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62 _Py_PackageContext = NULL;
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63 if (PyErr_Occurred())
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64 return NULL;
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65 if (_PyImport_FixupExtension(name, pathname) == NULL)
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66 return NULL;
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67
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68 m = PyDict_GetItemString(PyImport_GetModuleDict(), name);
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69 if (m == NULL) {
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70 PyErr_SetString(PyExc_SystemError,
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71 "dynamic module not initialized properly");
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72 return NULL;
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73 }
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74 /* Remember the filename as the __file__ attribute */
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75 d = PyModule_GetDict(m);
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76 s = PyString_FromString(pathname);
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77 if (s == NULL || PyDict_SetItemString(d, "__file__", s) != 0)
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78 PyErr_Clear(); /* Not important enough to report */
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79 Py_XDECREF(s);
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80 if (Py_VerboseFlag)
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81 PySys_WriteStderr(
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82 "import %s # dynamically loaded from %s\n",
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83 name, pathname);
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84 Py_INCREF(m);
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85 return m;
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86 }
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87
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88 #endif /* HAVE_DYNAMIC_LOADING */