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214 lines (177 loc) · 7.33 KB
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#ifndef Py_LIMITED_API
#ifndef Py_INTERNAL_IMPORT_H
#define Py_INTERNAL_IMPORT_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_lock.h" // PyMutex
#include "pycore_hashtable.h" // _Py_hashtable_t
extern int _PyImport_IsInitialized(PyInterpreterState *);
// Export for 'pyexpat' shared extension
PyAPI_FUNC(int) _PyImport_SetModule(PyObject *name, PyObject *module);
extern int _PyImport_SetModuleString(const char *name, PyObject* module);
extern void _PyImport_AcquireLock(PyInterpreterState *interp);
extern int _PyImport_ReleaseLock(PyInterpreterState *interp);
// This is used exclusively for the sys and builtins modules:
extern int _PyImport_FixupBuiltin(
PyObject *mod,
const char *name, /* UTF-8 encoded string */
PyObject *modules
);
extern int _PyImport_FixupExtensionObject(PyObject*, PyObject *,
PyObject *, PyObject *);
// Export for many shared extensions, like '_json'
PyAPI_FUNC(PyObject*) _PyImport_GetModuleAttr(PyObject *, PyObject *);
// Export for many shared extensions, like '_datetime'
PyAPI_FUNC(PyObject*) _PyImport_GetModuleAttrString(const char *, const char *);
struct _import_runtime_state {
/* The builtin modules (defined in config.c). */
struct _inittab *inittab;
/* The most recent value assigned to a PyModuleDef.m_base.m_index.
This is incremented each time PyModuleDef_Init() is called,
which is just about every time an extension module is imported.
See PyInterpreterState.modules_by_index for more info. */
Py_ssize_t last_module_index;
struct {
/* A lock to guard the cache. */
PyMutex mutex;
/* The actual cache of (filename, name, PyModuleDef) for modules.
Only legacy (single-phase init) extension modules are added
and only if they support multiple initialization (m_size >- 0)
or are imported in the main interpreter.
This is initialized lazily in _PyImport_FixupExtensionObject().
Modules are added there and looked up in _imp.find_extension(). */
_Py_hashtable_t *hashtable;
} extensions;
/* Package context -- the full module name for package imports */
const char * pkgcontext;
};
struct _import_state {
/* cached sys.modules dictionary */
PyObject *modules;
/* This is the list of module objects for all legacy (single-phase init)
extension modules ever loaded in this process (i.e. imported
in this interpreter or in any other). Py_None stands in for
modules that haven't actually been imported in this interpreter.
A module's index (PyModuleDef.m_base.m_index) is used to look up
the corresponding module object for this interpreter, if any.
(See PyState_FindModule().) When any extension module
is initialized during import, its moduledef gets initialized by
PyModuleDef_Init(), and the first time that happens for each
PyModuleDef, its index gets set to the current value of
a global counter (see _PyRuntimeState.imports.last_module_index).
The entry for that index in this interpreter remains unset until
the module is actually imported here. (Py_None is used as
a placeholder.) Note that multi-phase init modules always get
an index for which there will never be a module set.
This is initialized lazily in PyState_AddModule(), which is also
where modules get added. */
PyObject *modules_by_index;
/* importlib module._bootstrap */
PyObject *importlib;
/* override for config->use_frozen_modules (for tests)
(-1: "off", 1: "on", 0: no override) */
int override_frozen_modules;
int override_multi_interp_extensions_check;
#ifdef HAVE_DLOPEN
int dlopenflags;
#endif
PyObject *import_func;
/* The global import lock. */
struct {
PyThread_type_lock mutex;
unsigned long thread;
int level;
} lock;
/* diagnostic info in PyImport_ImportModuleLevelObject() */
struct {
int import_level;
PyTime_t accumulated;
int header;
} find_and_load;
};
#ifdef HAVE_DLOPEN
# include <dlfcn.h> // RTLD_NOW, RTLD_LAZY
# if HAVE_DECL_RTLD_NOW
# define _Py_DLOPEN_FLAGS RTLD_NOW
# else
# define _Py_DLOPEN_FLAGS RTLD_LAZY
# endif
# define DLOPENFLAGS_INIT .dlopenflags = _Py_DLOPEN_FLAGS,
#else
# define _Py_DLOPEN_FLAGS 0
# define DLOPENFLAGS_INIT
#endif
#define IMPORTS_INIT \
{ \
DLOPENFLAGS_INIT \
.lock = { \
.mutex = NULL, \
.thread = PYTHREAD_INVALID_THREAD_ID, \
.level = 0, \
}, \
.find_and_load = { \
.header = 1, \
}, \
}
extern void _PyImport_ClearCore(PyInterpreterState *interp);
extern Py_ssize_t _PyImport_GetNextModuleIndex(void);
extern const char * _PyImport_ResolveNameWithPackageContext(const char *name);
extern const char * _PyImport_SwapPackageContext(const char *newcontext);
extern int _PyImport_GetDLOpenFlags(PyInterpreterState *interp);
extern void _PyImport_SetDLOpenFlags(PyInterpreterState *interp, int new_val);
extern PyObject * _PyImport_InitModules(PyInterpreterState *interp);
extern PyObject * _PyImport_GetModules(PyInterpreterState *interp);
extern void _PyImport_ClearModules(PyInterpreterState *interp);
extern void _PyImport_ClearModulesByIndex(PyInterpreterState *interp);
extern int _PyImport_InitDefaultImportFunc(PyInterpreterState *interp);
extern int _PyImport_IsDefaultImportFunc(
PyInterpreterState *interp,
PyObject *func);
extern PyObject * _PyImport_GetImportlibLoader(
PyInterpreterState *interp,
const char *loader_name);
extern PyObject * _PyImport_GetImportlibExternalLoader(
PyInterpreterState *interp,
const char *loader_name);
extern PyObject * _PyImport_BlessMyLoader(
PyInterpreterState *interp,
PyObject *module_globals);
extern PyObject * _PyImport_ImportlibModuleRepr(
PyInterpreterState *interp,
PyObject *module);
extern PyStatus _PyImport_Init(void);
extern void _PyImport_Fini(void);
extern void _PyImport_Fini2(void);
extern PyStatus _PyImport_InitCore(
PyThreadState *tstate,
PyObject *sysmod,
int importlib);
extern PyStatus _PyImport_InitExternal(PyThreadState *tstate);
extern void _PyImport_FiniCore(PyInterpreterState *interp);
extern void _PyImport_FiniExternal(PyInterpreterState *interp);
#ifdef HAVE_FORK
extern PyStatus _PyImport_ReInitLock(PyInterpreterState *interp);
#endif
extern PyObject* _PyImport_GetBuiltinModuleNames(void);
struct _module_alias {
const char *name; /* ASCII encoded string */
const char *orig; /* ASCII encoded string */
};
// Export these 3 symbols for test_ctypes
PyAPI_DATA(const struct _frozen*) _PyImport_FrozenBootstrap;
PyAPI_DATA(const struct _frozen*) _PyImport_FrozenStdlib;
PyAPI_DATA(const struct _frozen*) _PyImport_FrozenTest;
extern const struct _module_alias * _PyImport_FrozenAliases;
extern int _PyImport_CheckSubinterpIncompatibleExtensionAllowed(
const char *name);
// Export for '_testinternalcapi' shared extension
PyAPI_FUNC(int) _PyImport_ClearExtension(PyObject *name, PyObject *filename);
#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_IMPORT_H */
#endif /* !Py_LIMITED_API */