mirror of https://github.com/python/cpython
bpo-1635741: Port mmap module to multiphase initialization (GH-19459)
This commit is contained in:
Dong-hee Na
GitHub
parent
e005ead49b
commit
3ad52e366f
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@ -0,0 +1 @@
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Port :mod:`mmap` to multiphase initialization.
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@ -1509,157 +1509,163 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict)
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}
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#endif /* MS_WINDOWS */
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static void
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setint(PyObject *d, const char *name, long value)
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static int
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mmap_exec(PyObject *module)
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{
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PyObject *o = PyLong_FromLong(value);
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if (o) {
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PyDict_SetItemString(d, name, o);
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Py_DECREF(o);
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if (PyType_Ready(&mmap_object_type) < 0) {
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return -1;
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}
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Py_INCREF(PyExc_OSError);
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if (PyModule_AddObject(module, "error", PyExc_OSError) < 0) {
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Py_DECREF(PyExc_OSError);
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return -1;
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}
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if (PyModule_AddType(module, &mmap_object_type) < 0) {
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return -1;
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}
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#define ADD_INT_MACRO(module, constant) \
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do { \
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if (PyModule_AddIntConstant(module, #constant, constant) < 0) { \
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return -1; \
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} \
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} while (0)
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#ifdef PROT_EXEC
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ADD_INT_MACRO(module, PROT_EXEC);
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#endif
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#ifdef PROT_READ
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ADD_INT_MACRO(module, PROT_READ);
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#endif
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#ifdef PROT_WRITE
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ADD_INT_MACRO(module, PROT_WRITE);
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#endif
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#ifdef MAP_SHARED
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ADD_INT_MACRO(module, MAP_SHARED);
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#endif
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#ifdef MAP_PRIVATE
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ADD_INT_MACRO(module, MAP_PRIVATE);
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#endif
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#ifdef MAP_DENYWRITE
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ADD_INT_MACRO(module, MAP_DENYWRITE);
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#endif
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#ifdef MAP_EXECUTABLE
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ADD_INT_MACRO(module, MAP_EXECUTABLE);
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#endif
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#ifdef MAP_ANONYMOUS
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if (PyModule_AddIntConstant(module, "MAP_ANON", MAP_ANONYMOUS) < 0 ) {
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return -1;
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}
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ADD_INT_MACRO(module, MAP_ANONYMOUS);
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#endif
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#ifdef MAP_POPULATE
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ADD_INT_MACRO(module, MAP_POPULATE);
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#endif
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if (PyModule_AddIntConstant(module, "PAGESIZE", (long)my_getpagesize()) < 0 ) {
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return -1;
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}
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if (PyModule_AddIntConstant(module, "ALLOCATIONGRANULARITY", (long)my_getallocationgranularity()) < 0 ) {
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return -1;
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}
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ADD_INT_MACRO(module, ACCESS_DEFAULT);
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ADD_INT_MACRO(module, ACCESS_READ);
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ADD_INT_MACRO(module, ACCESS_WRITE);
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ADD_INT_MACRO(module, ACCESS_COPY);
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#ifdef HAVE_MADVISE
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// Conventional advice values
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#ifdef MADV_NORMAL
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ADD_INT_MACRO(module, MADV_NORMAL);
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#endif
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#ifdef MADV_RANDOM
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ADD_INT_MACRO(module, MADV_RANDOM);
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#endif
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#ifdef MADV_SEQUENTIAL
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ADD_INT_MACRO(module, MADV_SEQUENTIAL);
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#endif
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#ifdef MADV_WILLNEED
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ADD_INT_MACRO(module, MADV_WILLNEED);
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#endif
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#ifdef MADV_DONTNEED
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ADD_INT_MACRO(module, MADV_DONTNEED);
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#endif
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// Linux-specific advice values
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#ifdef MADV_REMOVE
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ADD_INT_MACRO(module, MADV_REMOVE);
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#endif
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#ifdef MADV_DONTFORK
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ADD_INT_MACRO(module, MADV_DONTFORK);
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#endif
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#ifdef MADV_DOFORK
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ADD_INT_MACRO(module, MADV_DOFORK);
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#endif
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#ifdef MADV_HWPOISON
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ADD_INT_MACRO(module, MADV_HWPOISON);
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#endif
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#ifdef MADV_MERGEABLE
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ADD_INT_MACRO(module, MADV_MERGEABLE);
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#endif
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#ifdef MADV_UNMERGEABLE
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ADD_INT_MACRO(module, MADV_UNMERGEABLE);
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#endif
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#ifdef MADV_SOFT_OFFLINE
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ADD_INT_MACRO(module, MADV_SOFT_OFFLINE);
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#endif
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#ifdef MADV_HUGEPAGE
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ADD_INT_MACRO(module, MADV_HUGEPAGE);
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#endif
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#ifdef MADV_NOHUGEPAGE
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ADD_INT_MACRO(module, MADV_NOHUGEPAGE);
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#endif
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#ifdef MADV_DONTDUMP
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ADD_INT_MACRO(module, MADV_DONTDUMP);
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#endif
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#ifdef MADV_DODUMP
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ADD_INT_MACRO(module, MADV_DODUMP);
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#endif
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#ifdef MADV_FREE // (Also present on FreeBSD and macOS.)
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ADD_INT_MACRO(module, MADV_FREE);
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#endif
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// FreeBSD-specific
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#ifdef MADV_NOSYNC
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ADD_INT_MACRO(module, MADV_NOSYNC);
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#endif
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#ifdef MADV_AUTOSYNC
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ADD_INT_MACRO(module, MADV_AUTOSYNC);
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#endif
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#ifdef MADV_NOCORE
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ADD_INT_MACRO(module, MADV_NOCORE);
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#endif
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#ifdef MADV_CORE
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ADD_INT_MACRO(module, MADV_CORE);
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#endif
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#ifdef MADV_PROTECT
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ADD_INT_MACRO(module, MADV_PROTECT);
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#endif
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#endif // HAVE_MADVISE
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return 0;
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}
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static PyModuleDef_Slot mmap_slots[] = {
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{Py_mod_exec, mmap_exec},
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{0, NULL}
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};
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static struct PyModuleDef mmapmodule = {
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PyModuleDef_HEAD_INIT,
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"mmap",
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NULL,
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-1,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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.m_name = "mmap",
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.m_size = 0,
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.m_slots = mmap_slots,
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};
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PyMODINIT_FUNC
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PyInit_mmap(void)
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{
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PyObject *dict, *module;
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if (PyType_Ready(&mmap_object_type) < 0)
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return NULL;
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module = PyModule_Create(&mmapmodule);
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if (module == NULL)
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return NULL;
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dict = PyModule_GetDict(module);
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if (!dict)
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return NULL;
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PyDict_SetItemString(dict, "error", PyExc_OSError);
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PyDict_SetItemString(dict, "mmap", (PyObject*) &mmap_object_type);
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#ifdef PROT_EXEC
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setint(dict, "PROT_EXEC", PROT_EXEC);
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#endif
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#ifdef PROT_READ
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setint(dict, "PROT_READ", PROT_READ);
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#endif
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#ifdef PROT_WRITE
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setint(dict, "PROT_WRITE", PROT_WRITE);
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#endif
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#ifdef MAP_SHARED
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setint(dict, "MAP_SHARED", MAP_SHARED);
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#endif
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#ifdef MAP_PRIVATE
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setint(dict, "MAP_PRIVATE", MAP_PRIVATE);
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#endif
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#ifdef MAP_DENYWRITE
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setint(dict, "MAP_DENYWRITE", MAP_DENYWRITE);
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#endif
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#ifdef MAP_EXECUTABLE
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setint(dict, "MAP_EXECUTABLE", MAP_EXECUTABLE);
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#endif
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#ifdef MAP_ANONYMOUS
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setint(dict, "MAP_ANON", MAP_ANONYMOUS);
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setint(dict, "MAP_ANONYMOUS", MAP_ANONYMOUS);
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#endif
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#ifdef MAP_POPULATE
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setint(dict, "MAP_POPULATE", MAP_POPULATE);
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#endif
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setint(dict, "PAGESIZE", (long)my_getpagesize());
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setint(dict, "ALLOCATIONGRANULARITY", (long)my_getallocationgranularity());
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setint(dict, "ACCESS_DEFAULT", ACCESS_DEFAULT);
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setint(dict, "ACCESS_READ", ACCESS_READ);
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setint(dict, "ACCESS_WRITE", ACCESS_WRITE);
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setint(dict, "ACCESS_COPY", ACCESS_COPY);
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#ifdef HAVE_MADVISE
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// Conventional advice values
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#ifdef MADV_NORMAL
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setint(dict, "MADV_NORMAL", MADV_NORMAL);
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#endif
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#ifdef MADV_RANDOM
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setint(dict, "MADV_RANDOM", MADV_RANDOM);
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#endif
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#ifdef MADV_SEQUENTIAL
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setint(dict, "MADV_SEQUENTIAL", MADV_SEQUENTIAL);
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#endif
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#ifdef MADV_WILLNEED
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setint(dict, "MADV_WILLNEED", MADV_WILLNEED);
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#endif
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#ifdef MADV_DONTNEED
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setint(dict, "MADV_DONTNEED", MADV_DONTNEED);
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#endif
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// Linux-specific advice values
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#ifdef MADV_REMOVE
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setint(dict, "MADV_REMOVE", MADV_REMOVE);
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#endif
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#ifdef MADV_DONTFORK
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setint(dict, "MADV_DONTFORK", MADV_DONTFORK);
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#endif
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#ifdef MADV_DOFORK
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setint(dict, "MADV_DOFORK", MADV_DOFORK);
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#endif
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#ifdef MADV_HWPOISON
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setint(dict, "MADV_HWPOISON", MADV_HWPOISON);
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#endif
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#ifdef MADV_MERGEABLE
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setint(dict, "MADV_MERGEABLE", MADV_MERGEABLE);
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#endif
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#ifdef MADV_UNMERGEABLE
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setint(dict, "MADV_UNMERGEABLE", MADV_UNMERGEABLE);
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#endif
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#ifdef MADV_SOFT_OFFLINE
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setint(dict, "MADV_SOFT_OFFLINE", MADV_SOFT_OFFLINE);
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#endif
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#ifdef MADV_HUGEPAGE
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setint(dict, "MADV_HUGEPAGE", MADV_HUGEPAGE);
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#endif
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#ifdef MADV_NOHUGEPAGE
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setint(dict, "MADV_NOHUGEPAGE", MADV_NOHUGEPAGE);
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#endif
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#ifdef MADV_DONTDUMP
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setint(dict, "MADV_DONTDUMP", MADV_DONTDUMP);
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#endif
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#ifdef MADV_DODUMP
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setint(dict, "MADV_DODUMP", MADV_DODUMP);
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#endif
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#ifdef MADV_FREE // (Also present on FreeBSD and macOS.)
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setint(dict, "MADV_FREE", MADV_FREE);
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#endif
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// FreeBSD-specific
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#ifdef MADV_NOSYNC
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setint(dict, "MADV_NOSYNC", MADV_NOSYNC);
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#endif
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#ifdef MADV_AUTOSYNC
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setint(dict, "MADV_AUTOSYNC", MADV_AUTOSYNC);
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#endif
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#ifdef MADV_NOCORE
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setint(dict, "MADV_NOCORE", MADV_NOCORE);
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#endif
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#ifdef MADV_CORE
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setint(dict, "MADV_CORE", MADV_CORE);
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#endif
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#ifdef MADV_PROTECT
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setint(dict, "MADV_PROTECT", MADV_PROTECT);
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#endif
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#endif // HAVE_MADVISE
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return module;
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return PyModuleDef_Init(&mmapmodule);
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}
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