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gh-85283: Build posixshmem extension with Limited C API (#111087)

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Build the _multiprocessing.posixshmem extension with the Limited C
API.

* Add <errno.h> include.
* Replace PyUnicode_AsUTF8() with PyUnicode_AsUTF8AndSize().
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Victor Stinner 2023-10-20 00:23:49 +02:00 • committed by GitHub
parent 9376728ce4
commit 8d234cd315
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4 changed files with 24 additions and 104 deletions
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15
Modules/_multiprocessing/posixshmem.c
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@ -2,18 +2,17 @@
posixshmem - A Python extension that provides shm_open() and shm_unlink()
*/
// clinic/posixshmem.c.h uses internal pycore_modsupport.h API
#ifndef Py_BUILD_CORE_BUILTIN
# define Py_BUILD_CORE_MODULE 1
#endif
// Need limited C API version 3.13 for Py_MOD_PER_INTERPRETER_GIL_SUPPORTED
#define Py_LIMITED_API 0x030d0000
#include <Python.h>
// for shm_open() and shm_unlink()
#include <errno.h> // EINTR
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
# include <sys/mman.h> // shm_open(), shm_unlink()
#endif
/*[clinic input]
module _posixshmem
[clinic start generated code]*/
@ -45,7 +44,7 @@ _posixshmem_shm_open_impl(PyObject *module, PyObject *path, int flags,
{
int fd;
int async_err = 0;
const char *name = PyUnicode_AsUTF8(path);
const char *name = PyUnicode_AsUTF8AndSize(path, NULL);
if (name == NULL) {
return -1;
}
@ -84,7 +83,7 @@ _posixshmem_shm_unlink_impl(PyObject *module, PyObject *path)
{
int rv;
int async_err = 0;
const char *name = PyUnicode_AsUTF8(path);
const char *name = PyUnicode_AsUTF8AndSize(path, NULL);
if (name == NULL) {
return NULL;
}