Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | fd71b9e | 2000-06-30 23:50:40 +0000 | [diff] [blame] | 2 | Copyright (c) 2000, BeOpen.com. |
| 3 | Copyright (c) 1995-2000, Corporation for National Research Initiatives. |
| 4 | Copyright (c) 1990-1995, Stichting Mathematisch Centrum. |
| 5 | All rights reserved. |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 6 | |
Guido van Rossum | fd71b9e | 2000-06-30 23:50:40 +0000 | [diff] [blame] | 7 | See the file "Misc/COPYRIGHT" for information on usage and |
| 8 | redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 9 | ******************************************************************/ |
| 10 | |
| 11 | /* Support for dynamic loading of extension modules */ |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 12 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 13 | #include "Python.h" |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 14 | |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 15 | /* ./configure sets HAVE_DYNAMIC_LOADING if dynamic loading of modules is |
| 16 | supported on this platform. configure will then compile and link in one |
| 17 | of the dynload_*.c files, as appropriate. We will call a function in |
| 18 | those modules to get a function pointer to the module's init function. |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 19 | */ |
Guido van Rossum | 6ea9092 | 1999-12-20 21:20:42 +0000 | [diff] [blame] | 20 | #ifdef HAVE_DYNAMIC_LOADING |
Guido van Rossum | ff4af06 | 1996-01-12 01:17:50 +0000 | [diff] [blame] | 21 | |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 22 | #include "importdl.h" |
| 23 | |
Guido van Rossum | 6ea9092 | 1999-12-20 21:20:42 +0000 | [diff] [blame] | 24 | extern dl_funcptr _PyImport_GetDynLoadFunc(const char *name, |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 25 | const char *shortname, |
Guido van Rossum | 6ea9092 | 1999-12-20 21:20:42 +0000 | [diff] [blame] | 26 | const char *pathname, FILE *fp); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 27 | |
Guido van Rossum | 3823420 | 1996-07-31 17:55:19 +0000 | [diff] [blame] | 28 | |
Guido van Rossum | 6ea9092 | 1999-12-20 21:20:42 +0000 | [diff] [blame] | 29 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 30 | PyObject * |
| 31 | _PyImport_LoadDynamicModule(name, pathname, fp) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 32 | char *name; |
| 33 | char *pathname; |
Sjoerd Mullender | fbe6d33 | 1995-06-12 15:51:34 +0000 | [diff] [blame] | 34 | FILE *fp; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 35 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 36 | PyObject *m, *d, *s; |
Guido van Rossum | 2e58ff3 | 1997-11-19 18:53:33 +0000 | [diff] [blame] | 37 | char *lastdot, *shortname, *packagecontext; |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 38 | dl_funcptr p; |
Guido van Rossum | 6ea9092 | 1999-12-20 21:20:42 +0000 | [diff] [blame] | 39 | |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 40 | if ((m = _PyImport_FindExtension(name, pathname)) != NULL) { |
| 41 | Py_INCREF(m); |
| 42 | return m; |
| 43 | } |
Guido van Rossum | 2e58ff3 | 1997-11-19 18:53:33 +0000 | [diff] [blame] | 44 | lastdot = strrchr(name, '.'); |
| 45 | if (lastdot == NULL) { |
| 46 | packagecontext = NULL; |
| 47 | shortname = name; |
| 48 | } |
| 49 | else { |
| 50 | packagecontext = name; |
| 51 | shortname = lastdot+1; |
| 52 | } |
Guido van Rossum | d5962ad | 1996-07-31 22:44:53 +0000 | [diff] [blame] | 53 | |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 54 | p = _PyImport_GetDynLoadFunc(name, shortname, pathname, fp); |
Guido van Rossum | 6ea9092 | 1999-12-20 21:20:42 +0000 | [diff] [blame] | 55 | if (PyErr_Occurred()) |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 56 | return NULL; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 57 | if (p == NULL) { |
Guido van Rossum | 2e58ff3 | 1997-11-19 18:53:33 +0000 | [diff] [blame] | 58 | PyErr_Format(PyExc_ImportError, |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 59 | "dynamic module does not define init function (init%.200s)", |
| 60 | shortname); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 61 | return NULL; |
| 62 | } |
Guido van Rossum | 2e58ff3 | 1997-11-19 18:53:33 +0000 | [diff] [blame] | 63 | _Py_PackageContext = packagecontext; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 64 | (*p)(); |
Guido van Rossum | 2e58ff3 | 1997-11-19 18:53:33 +0000 | [diff] [blame] | 65 | _Py_PackageContext = NULL; |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 66 | if (PyErr_Occurred()) |
| 67 | return NULL; |
| 68 | if (_PyImport_FixupExtension(name, pathname) == NULL) |
| 69 | return NULL; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 70 | |
Guido van Rossum | ef3d02e | 1997-07-21 14:54:36 +0000 | [diff] [blame] | 71 | m = PyDict_GetItemString(PyImport_GetModuleDict(), name); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 72 | if (m == NULL) { |
Guido van Rossum | 25ce566 | 1997-08-02 03:10:38 +0000 | [diff] [blame] | 73 | PyErr_SetString(PyExc_SystemError, |
| 74 | "dynamic module not initialized properly"); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 75 | return NULL; |
| 76 | } |
Guido van Rossum | 1e61249 | 1996-08-19 22:12:10 +0000 | [diff] [blame] | 77 | /* Remember the filename as the __file__ attribute */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 78 | d = PyModule_GetDict(m); |
| 79 | s = PyString_FromString(pathname); |
| 80 | if (s == NULL || PyDict_SetItemString(d, "__file__", s) != 0) |
| 81 | PyErr_Clear(); /* Not important enough to report */ |
| 82 | Py_XDECREF(s); |
| 83 | if (Py_VerboseFlag) |
Guido van Rossum | 2f3667a | 1998-10-12 18:23:55 +0000 | [diff] [blame] | 84 | PySys_WriteStderr( |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 85 | "import %s # dynamically loaded from %s\n", |
| 86 | name, pathname); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 87 | Py_INCREF(m); |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 88 | return m; |
Guido van Rossum | 1ae940a | 1995-01-02 19:04:15 +0000 | [diff] [blame] | 89 | } |
Guido van Rossum | 96a8fb7 | 1999-12-22 14:09:35 +0000 | [diff] [blame] | 90 | |
| 91 | #endif /* HAVE_DYNAMIC_LOADING */ |