Mercurial > cpython-lru_cache-weakref

annotate Python/importdl.c @ 13267:4ce255495da3 legacy-trunk

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Jack Jansen, Mac patch: If we have stat.h include it if we don't have sys/stat.h
author Guido van Rossum <guido@python.org>
date Sat, 01 Jul 2000 01:08:11 +0000
parents 87ee82e5c56d
children f79434ee41fa
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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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30 PyObject *
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31 _PyImport_LoadDynamicModule(name, pathname, fp)
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32 char *name;
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33 char *pathname;
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34 FILE *fp;
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35 {
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36 PyObject *m, *d, *s;
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37 char *lastdot, *shortname, *packagecontext;
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38 dl_funcptr p;
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39
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40 if ((m = _PyImport_FindExtension(name, pathname)) != NULL) {
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41 Py_INCREF(m);
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42 return m;
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43 }
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44 lastdot = strrchr(name, '.');
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45 if (lastdot == NULL) {
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46 packagecontext = NULL;
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47 shortname = name;
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48 }
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49 else {
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50 packagecontext = name;
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51 shortname = lastdot+1;
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52 }
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53
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54 p = _PyImport_GetDynLoadFunc(name, shortname, pathname, fp);
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55 if (PyErr_Occurred())
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56 return NULL;
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57 if (p == NULL) {
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58 PyErr_Format(PyExc_ImportError,
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59 "dynamic module does not define init function (init%.200s)",
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60 shortname);
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61 return NULL;
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62 }
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63 _Py_PackageContext = packagecontext;
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64 (*p)();
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65 _Py_PackageContext = NULL;
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66 if (PyErr_Occurred())
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67 return NULL;
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68 if (_PyImport_FixupExtension(name, pathname) == NULL)
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69 return NULL;
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70
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71 m = PyDict_GetItemString(PyImport_GetModuleDict(), name);
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72 if (m == NULL) {
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73 PyErr_SetString(PyExc_SystemError,
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74 "dynamic module not initialized properly");
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75 return NULL;
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76 }
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77 /* Remember the filename as the __file__ attribute */
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78 d = PyModule_GetDict(m);
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79 s = PyString_FromString(pathname);
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80 if (s == NULL || PyDict_SetItemString(d, "__file__", s) != 0)
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81 PyErr_Clear(); /* Not important enough to report */
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82 Py_XDECREF(s);
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83 if (Py_VerboseFlag)
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84 PySys_WriteStderr(
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85 "import %s # dynamically loaded from %s\n",
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86 name, pathname);
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87 Py_INCREF(m);
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88 return m;
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89 }
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91 #endif /* HAVE_DYNAMIC_LOADING */