Mercurial > cpython-lru_cache-weakref

annotate Python/importdl.c @ 17104:a488a63cb867 legacy-trunk

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Fix PyFrame_FastToLocals() and counterpart to deal with cells and frees. Note there doesn't seem to be any way to test LocalsToFast(), because the instructions that trigger it are illegal in nested scopes with free variables. Fix allocation strategy for cells that are also formal parameters. Instead of emitting LOAD_FAST / STORE_DEREF pairs for each parameter, have the argument handling code in eval_code2() do the right thing. A side-effect of this change is that cell variables that are also arguments are listed at the front of co_cellvars in the order they appear in the argument list.
author Jeremy Hylton <jeremy@alum.mit.edu>
date Wed, 21 Mar 2001 16:43:47 +0000
parents 6f6f965c5e2d
children 2f0c5af4d5ea
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1
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2 /* Support for dynamic loading of extension modules */
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3
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4 #include "Python.h"
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5
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6 /* ./configure sets HAVE_DYNAMIC_LOADING if dynamic loading of modules is
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7 supported on this platform. configure will then compile and link in one
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8 of the dynload_*.c files, as appropriate. We will call a function in
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9 those modules to get a function pointer to the module's init function.
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10 */
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11 #ifdef HAVE_DYNAMIC_LOADING
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13 #include "importdl.h"
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15 extern dl_funcptr _PyImport_GetDynLoadFunc(const char *name,
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16 const char *shortname,
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17 const char *pathname, FILE *fp);
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21 PyObject *
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22 _PyImport_LoadDynamicModule(char *name, char *pathname, FILE *fp)
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23 {
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24 PyObject *m, *d, *s;
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25 char *lastdot, *shortname, *packagecontext;
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26 dl_funcptr p;
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28 if ((m = _PyImport_FindExtension(name, pathname)) != NULL) {
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29 Py_INCREF(m);
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30 return m;
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31 }
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32 lastdot = strrchr(name, '.');
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33 if (lastdot == NULL) {
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34 packagecontext = NULL;
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35 shortname = name;
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36 }
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37 else {
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38 packagecontext = name;
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39 shortname = lastdot+1;
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40 }
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41
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42 p = _PyImport_GetDynLoadFunc(name, shortname, pathname, fp);
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43 if (PyErr_Occurred())
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44 return NULL;
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45 if (p == NULL) {
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46 PyErr_Format(PyExc_ImportError,
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47 "dynamic module does not define init function (init%.200s)",
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48 shortname);
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49 return NULL;
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50 }
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51 _Py_PackageContext = packagecontext;
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52 (*p)();
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53 _Py_PackageContext = NULL;
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54 if (PyErr_Occurred())
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55 return NULL;
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56 if (_PyImport_FixupExtension(name, pathname) == NULL)
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57 return NULL;
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58
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59 m = PyDict_GetItemString(PyImport_GetModuleDict(), name);
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60 if (m == NULL) {
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61 PyErr_SetString(PyExc_SystemError,
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62 "dynamic module not initialized properly");
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63 return NULL;
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64 }
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65 /* Remember the filename as the __file__ attribute */
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66 d = PyModule_GetDict(m);
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67 s = PyString_FromString(pathname);
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68 if (s == NULL || PyDict_SetItemString(d, "__file__", s) != 0)
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69 PyErr_Clear(); /* Not important enough to report */
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70 Py_XDECREF(s);
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71 if (Py_VerboseFlag)
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72 PySys_WriteStderr(
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73 "import %s # dynamically loaded from %s\n",
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74 name, pathname);
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75 Py_INCREF(m);
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76 return m;
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77 }
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79 #endif /* HAVE_DYNAMIC_LOADING */