Skip to content

bpo-41798: Allocate _decimal extension module CAPI on the heap #24117

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
vstinner merged 5 commits into from
Jan 6, 2021
Merged

bpo-41798: Allocate _decimal extension module CAPI on the heap #24117

Changes from 1 commit
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
548a5d0
bpo-41798: Allocate _decimal extension module CAPI on the heap
Jan 5, 2021
d54e7d5
Address review: Move capsule name macro to header file
Jan 5, 2021
aa5a4e7
Address review: Use calloc iso. malloc
Jan 5, 2021
5459943
Address review: Drop free_api() aux. method
Jan 5, 2021
a8c17a4
Improve naming
Jan 5, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
33 changes: 28 additions & 5 deletions Modules/_decimal/_decimal.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5574,8 +5574,6 @@ static PyTypeObject PyDecContext_Type =
/* C-API */
/****************************************************************************/

static void *_decimal_api[CPYTHON_DECIMAL_MAX_API];

/* Simple API */
static int
PyDec_TypeCheck(const PyObject *v)
Expand Down Expand Up @@ -5699,9 +5697,29 @@ PyDec_GetConst(const PyObject *v)
return MPD(v);
}

static void
free_api(void *capi)
{
PyMem_Free(capi);
}

#define CAPSULE_NAME "_decimal._API"
Comment thread
erlend-aasland marked this conversation as resolved.
Outdated
static void
destroy_api(PyObject *obj)
{
void *capi = PyCapsule_GetPointer(obj, CAPSULE_NAME);
free_api(capi);
}

static PyObject *
init_api(void)
{
void **_decimal_api = PyMem_Malloc(CPYTHON_DECIMAL_MAX_API * sizeof(void *));
Comment thread
erlend-aasland marked this conversation as resolved.
Outdated
if (_decimal_api == NULL) {
PyErr_NoMemory();
return NULL;
}

/* Simple API */
_decimal_api[PyDec_TypeCheck_INDEX] = (void *)PyDec_TypeCheck;
_decimal_api[PyDec_IsSpecial_INDEX] = (void *)PyDec_IsSpecial;
Expand All @@ -5716,8 +5734,13 @@ init_api(void)
_decimal_api[PyDec_Get_INDEX] = (void *)PyDec_Get;
_decimal_api[PyDec_GetConst_INDEX] = (void *)PyDec_GetConst;

return PyCapsule_New(_decimal_api, "_decimal._API", NULL);
PyObject *capsule = PyCapsule_New(_decimal_api, CAPSULE_NAME, destroy_api);
if (!capsule) {
free_api(_decimal_api);
Comment thread
erlend-aasland marked this conversation as resolved.
Outdated
}
return capsule;
}
#undef CAPSULE_NAME


/****************************************************************************/
Expand Down Expand Up @@ -6080,8 +6103,7 @@ PyInit__decimal(void)
CHECK_INT(PyModule_AddStringConstant(m, "__libmpdec_version__", mpd_version()));

/* Add capsule API */
Py_INCREF(capsule);
if (PyModule_AddObject(m, "_API", capsule) < 0) {
if (PyModule_AddObjectRef(m, "_API", capsule) < 0) {
goto error;
}

Expand All @@ -6107,6 +6129,7 @@ PyInit__decimal(void)
Py_CLEAR(basic_context_template); /* GCOV_NOT_REACHED */
Py_CLEAR(extended_context_template); /* GCOV_NOT_REACHED */
Py_CLEAR(m); /* GCOV_NOT_REACHED */
Py_CLEAR(capsule); /* GCOV_NOT_REACHED */

return NULL; /* GCOV_NOT_REACHED */
}
Expand Down