mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 00:48:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

bpo-45522: Allow to disable freelists on build time (GH-29056)

Browse source 
Freelists for object structs can now be disabled. A new ``configure``
option ``--without-freelists`` can be used to disable all freelists
except empty tuple singleton. Internal Py*_MAXFREELIST macros can now
be defined as 0 without causing compiler warnings and segfaults.

Signed-off-by: Christian Heimes <christian@python.org>
This commit is contained in:
Christian Heimes 2021-10-21 16:12:20 +03:00 • committed by GitHub
parent 5a14f71fe8
commit 9942f42a93
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
15 changed files with 218 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

26
Objects/genobject.c
View file

@ -1567,12 +1567,14 @@ PyTypeObject PyAsyncGen_Type = {
};
#if _PyAsyncGen_MAXFREELIST > 0
static struct _Py_async_gen_state *
get_async_gen_state(void)
{
PyInterpreterState *interp = _PyInterpreterState_GET();
return &interp->async_gen;
}
#endif
PyObject *
@ -1595,6 +1597,7 @@ PyAsyncGen_New(PyFrameObject *f, PyObject *name, PyObject *qualname)
void
_PyAsyncGen_ClearFreeLists(PyInterpreterState *interp)
{
#if _PyAsyncGen_MAXFREELIST > 0
struct _Py_async_gen_state *state = &interp->async_gen;
while (state->value_numfree) {
@ -1610,13 +1613,14 @@ _PyAsyncGen_ClearFreeLists(PyInterpreterState *interp)
assert(Py_IS_TYPE(o, &_PyAsyncGenASend_Type));
PyObject_GC_Del(o);
}
#endif
}
void
_PyAsyncGen_Fini(PyInterpreterState *interp)
{
_PyAsyncGen_ClearFreeLists(interp);
#ifdef Py_DEBUG
#if defined(Py_DEBUG) && _PyAsyncGen_MAXFREELIST > 0
struct _Py_async_gen_state *state = &interp->async_gen;
state->value_numfree = -1;
state->asend_numfree = -1;
@ -1663,6 +1667,7 @@ async_gen_asend_dealloc(PyAsyncGenASend *o)
_PyObject_GC_UNTRACK((PyObject *)o);
Py_CLEAR(o->ags_gen);
Py_CLEAR(o->ags_sendval);
#if _PyAsyncGen_MAXFREELIST > 0
struct _Py_async_gen_state *state = get_async_gen_state();
#ifdef Py_DEBUG
// async_gen_asend_dealloc() must not be called after _PyAsyncGen_Fini()
@ -1672,7 +1677,9 @@ async_gen_asend_dealloc(PyAsyncGenASend *o)
assert(PyAsyncGenASend_CheckExact(o));
state->asend_freelist[state->asend_numfree++] = o;
}
else {
else
#endif
{
PyObject_GC_Del(o);
}
}
@ -1825,6 +1832,7 @@ static PyObject *
async_gen_asend_new(PyAsyncGenObject *gen, PyObject *sendval)
{
PyAsyncGenASend *o;
#if _PyAsyncGen_MAXFREELIST > 0
struct _Py_async_gen_state *state = get_async_gen_state();
#ifdef Py_DEBUG
// async_gen_asend_new() must not be called after _PyAsyncGen_Fini()
@ -1835,7 +1843,9 @@ async_gen_asend_new(PyAsyncGenObject *gen, PyObject *sendval)
o = state->asend_freelist[state->asend_numfree];
_Py_NewReference((PyObject *)o);
}
else {
else
#endif
{
o = PyObject_GC_New(PyAsyncGenASend, &_PyAsyncGenASend_Type);
if (o == NULL) {
return NULL;
@ -1863,6 +1873,7 @@ async_gen_wrapped_val_dealloc(_PyAsyncGenWrappedValue *o)
{
_PyObject_GC_UNTRACK((PyObject *)o);
Py_CLEAR(o->agw_val);
#if _PyAsyncGen_MAXFREELIST > 0
struct _Py_async_gen_state *state = get_async_gen_state();
#ifdef Py_DEBUG
// async_gen_wrapped_val_dealloc() must not be called after _PyAsyncGen_Fini()
@ -1872,7 +1883,9 @@ async_gen_wrapped_val_dealloc(_PyAsyncGenWrappedValue *o)
assert(_PyAsyncGenWrappedValue_CheckExact(o));
state->value_freelist[state->value_numfree++] = o;
}
else {
else
#endif
{
PyObject_GC_Del(o);
}
}
@ -1936,6 +1949,7 @@ _PyAsyncGenValueWrapperNew(PyObject *val)
_PyAsyncGenWrappedValue *o;
assert(val);
#if _PyAsyncGen_MAXFREELIST > 0
struct _Py_async_gen_state *state = get_async_gen_state();
#ifdef Py_DEBUG
// _PyAsyncGenValueWrapperNew() must not be called after _PyAsyncGen_Fini()
@ -1947,7 +1961,9 @@ _PyAsyncGenValueWrapperNew(PyObject *val)
assert(_PyAsyncGenWrappedValue_CheckExact(o));
_Py_NewReference((PyObject*)o);
}
else {
else
#endif
{
o = PyObject_GC_New(_PyAsyncGenWrappedValue,
&_PyAsyncGenWrappedValue_Type);
if (o == NULL) {