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cpython/Python/importdl.h
Nick Coghlan d5cacbb1d9 PEP 489: Multi-phase extension module initialization
Known limitations of the current implementation:

- documentation changes are incomplete
- there's a reference leak I haven't tracked down yet

The leak is most visible by running:

  ./python -m test -R3:3 test_importlib

However, you can also see it by running:

  ./python -X showrefcount

Importing the array or _testmultiphase modules, and
then deleting them from both sys.modules and the local
namespace shows significant increases in the total
number of active references each cycle. By contrast,
with _testcapi (which continues to use single-phase
initialisation) the global refcounts stabilise after
a couple of cycles.
2015-05-23 22:24:10 +10:00

28 lines
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C

#ifndef Py_IMPORTDL_H
#define Py_IMPORTDL_H
#ifdef __cplusplus
extern "C" {
#endif
extern const char *_PyImport_DynLoadFiletab[];
extern PyObject *_PyImport_LoadDynamicModuleWithSpec(PyObject *spec, FILE *);
/* Max length of module suffix searched for -- accommodates "module.slb" */
#define MAXSUFFIXSIZE 12
#ifdef MS_WINDOWS
#include <windows.h>
typedef FARPROC dl_funcptr;
#else
typedef void (*dl_funcptr)(void);
#endif
#ifdef __cplusplus
}
#endif
#endif /* !Py_IMPORTDL_H */