Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 1da43e5e916949c8e849e656d9d05fa4b9d6836c authored by Benjamin Peterson on 26 June 2009, 13:21:52 UTC
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
Tip revision: 1da43e5
importdl.c
/* Support for dynamic loading of extension modules */
#include "Python.h"
/* ./configure sets HAVE_DYNAMIC_LOADING if dynamic loading of modules is
supported on this platform. configure will then compile and link in one
of the dynload_*.c files, as appropriate. We will call a function in
those modules to get a function pointer to the module's init function.
*/
#ifdef HAVE_DYNAMIC_LOADING
#include "importdl.h"
extern dl_funcptr _PyImport_GetDynLoadFunc(const char *name,
const char *shortname,
const char *pathname, FILE *fp);
PyObject *
_PyImport_LoadDynamicModule(char *name, char *pathname, FILE *fp)
{
PyObject *m;
PyObject *path;
char *lastdot, *shortname, *packagecontext, *oldcontext;
dl_funcptr p0;
PyObject* (*p)(void);
struct PyModuleDef *def;
if ((m = _PyImport_FindExtension(name, pathname)) != NULL) {
Py_INCREF(m);
return m;
}
lastdot = strrchr(name, '.');
if (lastdot == NULL) {
packagecontext = NULL;
shortname = name;
}
else {
packagecontext = name;
shortname = lastdot+1;
}
p0 = _PyImport_GetDynLoadFunc(name, shortname, pathname, fp);
p = (PyObject*(*)(void))p0;
if (PyErr_Occurred())
return NULL;
if (p == NULL) {
PyErr_Format(PyExc_ImportError,
"dynamic module does not define init function (PyInit_%.200s)",
shortname);
return NULL;
}
oldcontext = _Py_PackageContext;
_Py_PackageContext = packagecontext;
m = (*p)();
_Py_PackageContext = oldcontext;
if (m == NULL)
return NULL;
if (PyErr_Occurred()) {
Py_DECREF(m);
PyErr_Format(PyExc_SystemError,
"initialization of %s raised unreported exception",
shortname);
return NULL;
}
/* Remember pointer to module init function. */
def = PyModule_GetDef(m);
def->m_base.m_init = p;
/* Remember the filename as the __file__ attribute */
path = PyUnicode_DecodeFSDefault(pathname);
if (PyModule_AddObject(m, "__file__", path) < 0)
PyErr_Clear(); /* Not important enough to report */
if (_PyImport_FixupExtension(m, name, pathname) < 0)
return NULL;
if (Py_VerboseFlag)
PySys_WriteStderr(
"import %s # dynamically loaded from %s\n",
name, pathname);
return m;
}
#endif /* HAVE_DYNAMIC_LOADING */