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| author | Christian Heimes <christian@python.org> | 2021-10-21 13:12:20 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-10-21 13:12:20 (GMT) |
| commit | 9942f42a93ccda047fd3558c47b822e99afe10c0 (patch) | |
| tree | 5a28ecf799a90b9225530c12acd7c38c1935f156 /Objects/floatobject.c | |
| parent | 5a14f71fe869d4a62dcdeb9a8fbbb5884c75060c (diff) | |
| download | cpython-9942f42a93ccda047fd3558c47b822e99afe10c0.zip cpython-9942f42a93ccda047fd3558c47b822e99afe10c0.tar.gz cpython-9942f42a93ccda047fd3558c47b822e99afe10c0.tar.bz2 | |
bpo-45522: Allow to disable freelists on build time (GH-29056)
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>
Diffstat (limited to 'Objects/floatobject.c')
| -rw-r--r-- | Objects/floatobject.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/Objects/floatobject.c b/Objects/floatobject.c index 1be31e3..7fc192e 100644 --- a/Objects/floatobject.c +++ b/Objects/floatobject.c @@ -28,12 +28,14 @@ class float "PyObject *" "&PyFloat_Type" #endif +#if PyFloat_MAXFREELIST > 0 static struct _Py_float_state * get_float_state(void) { PyInterpreterState *interp = _PyInterpreterState_GET(); return &interp->float_state; } +#endif double @@ -126,8 +128,10 @@ PyFloat_GetInfo(void) PyObject * PyFloat_FromDouble(double fval) { + PyFloatObject *op; +#if PyFloat_MAXFREELIST > 0 struct _Py_float_state *state = get_float_state(); - PyFloatObject *op = state->free_list; + op = state->free_list; if (op != NULL) { #ifdef Py_DEBUG // PyFloat_FromDouble() must not be called after _PyFloat_Fini() @@ -136,7 +140,9 @@ PyFloat_FromDouble(double fval) state->free_list = (PyFloatObject *) Py_TYPE(op); state->numfree--; } - else { + else +#endif + { op = PyObject_Malloc(sizeof(PyFloatObject)); if (!op) { return PyErr_NoMemory(); @@ -233,6 +239,7 @@ PyFloat_FromString(PyObject *v) static void float_dealloc(PyFloatObject *op) { +#if PyFloat_MAXFREELIST > 0 if (PyFloat_CheckExact(op)) { struct _Py_float_state *state = get_float_state(); #ifdef Py_DEBUG @@ -247,7 +254,9 @@ float_dealloc(PyFloatObject *op) Py_SET_TYPE(op, (PyTypeObject *)state->free_list); state->free_list = op; } - else { + else +#endif + { Py_TYPE(op)->tp_free((PyObject *)op); } } @@ -2036,6 +2045,7 @@ _PyFloat_InitTypes(void) void _PyFloat_ClearFreeList(PyInterpreterState *interp) { +#if PyFloat_MAXFREELIST > 0 struct _Py_float_state *state = &interp->float_state; PyFloatObject *f = state->free_list; while (f != NULL) { @@ -2045,13 +2055,14 @@ _PyFloat_ClearFreeList(PyInterpreterState *interp) } state->free_list = NULL; state->numfree = 0; +#endif } void _PyFloat_Fini(PyInterpreterState *interp) { _PyFloat_ClearFreeList(interp); -#ifdef Py_DEBUG +#if defined(Py_DEBUG) && PyFloat_MAXFREELIST > 0 struct _Py_float_state *state = &interp->float_state; state->numfree = -1; #endif @@ -2061,10 +2072,12 @@ _PyFloat_Fini(PyInterpreterState *interp) void _PyFloat_DebugMallocStats(FILE *out) { +#if PyFloat_MAXFREELIST > 0 struct _Py_float_state *state = get_float_state(); _PyDebugAllocatorStats(out, "free PyFloatObject", state->numfree, sizeof(PyFloatObject)); +#endif } |