8000 gh-90667: Add specializations of Py_DECREF when types are known by sweeneyde · Pull Request #30872 · python/cpython · GitHub
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gh-90667: Add specializations of Py_DECREF when types are known #30872

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Merged
merged 18 commits into from
Apr 19, 2022
Merged

gh-90667: Add specializations of Py_DECREF when types are known #30872

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ffe7d7b
Add specializations of Py_DECREF when types are known
sweeneyde Jan 23, 2022
d2d7b6f
📜🤖 Added by blurb_it.
blurb-it[bot] Jan 25, 2022
5cb77fd
Strings should be freed with unicode_dealloc, not PyObject_Free!
sweeneyde Jan 25, 2022
f58ebcf
_Py_DECREF_IMMORTAL
sweeneyde Jan 25, 2022
0046cd7
Remove a layer of macros. Retain _Py_DECREF_INT for private use in lo…
sweeneyde Jan 25, 2022
8edfa4d
Hide more functions
sweeneyde Jan 26, 2022
d095c43
Use PyAPI_FUNC again
sweeneyde Jan 27, 2022
fa6a26a
Use PyObject* to avoid casts
sweeneyde Jan 27, 2022
35c0d25
Remove PyAPI_FUNC and mathmodule optimizations
sweeneyde Jan 27, 2022
feebdb3
Use _Py_FataRefcountError() directly. Move it to the same header file.
sweeneyde Jan 28, 2022
05b050b
remove (destructor) cast in bltinmodule and longobject
sweeneyde Jan 29, 2022
0d6a598
Add newline at end of NEWS entry
sweeneyde Feb 11, 2022
731f79d
Merge remote-tracking branch 'upstream/main' into special_decref
sweeneyde Feb 11, 2022
d5f49b2
Merge with main: resolve boolobject.c includes
sweeneyde Feb 24, 2022
b331bf8
merge with main
sweeneyde Apr 12, 2022
ad146ef
naming: IMMORTAL --> NO_DEALLOC
sweeneyde Apr 12, 2022
ec763e6
mrege with main
sweeneyde Apr 18, 2022
3dd308a
Remove _PyLong_ExactDealloc
sweeneyde Apr 19, 2022
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naming: IMMORTAL --> NO_DEALLOC
  • Loading branch information
@sweeneyde
sweeneyde committed Apr 12, 2022
commit ad146ef86e5cae1cac0affaefd3eabda37bd6a87
4 changes: 2 additions & 2 deletions Include/internal/pycore_object.h
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Original file line number Diff line number Diff line change
Expand Up @@ -49,15 +49,15 @@ _Py_DECREF_SPECIALIZED(PyObject *op, const destructor destruct)
}

static inline void
_Py_DECREF_IMMORTAL(PyObject *op)
_Py_DECREF_NO_DEALLOC(PyObject *op)
{
#ifdef Py_REF_DEBUG
_Py_RefTotal--;
#endif
op->ob_refcnt--;
#ifdef Py_DEBUG
if (op->ob_refcnt <= 0) {
_Py_FatalRefcountError("deallocating a singleton");
_Py_FatalRefcountError("Expected a positive remaining refcount");
}
#endif
}
Expand Down
28 changes: 14 additions & 14 deletions Python/ceval.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2018,7 +2018,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
* that the string is safe to mutate.
*/
assert(Py_REFCNT(left) >= 2);
Py_DECREF(left); // XXX never need to dealloc
_Py_DECREF_NO_DEALLOC(left);
STACK_SHRINK(2);
PyUnicode_Append(target_local, right);
_Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
Expand Down Expand Up @@ -3940,11 +3940,11 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
PREDICTED(POP_JUMP_BACKWARD_IF_FALSE);
PyObject *cond = POP();
if (Py_IsTrue(cond)) {
_Py_DECREF_IMMORTAL(cond);
_Py_DECREF_NO_DEALLOC(cond);
DISPATCH();
}
if (Py_IsFalse(cond)) {
_Py_DECREF_IMMORTAL(cond);
_Py_DECREF_NO_DEALLOC(cond);
JUMPBY(-oparg);
CHECK_EVAL_BREAKER();
DISPATCH();
Expand All @@ -3966,10 +3966,10 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
PREDICTED(POP_JUMP_FORWARD_IF_FALSE);
PyObject *cond = POP();
if (Py_IsTrue(cond)) {
_Py_DECREF_IMMORTAL(cond);
_Py_DECREF_NO_DEALLOC(cond);
}
else if (Py_IsFalse(cond)) {
_Py_DECREF_IMMORTAL(cond);
_Py_DECREF_NO_DEALLOC(cond);
JUMPBY(oparg);
}
else {
Expand All @@ -3989,11 +3989,11 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
TARGET(POP_JUMP_BACKWARD_IF_TRUE) {
PyObject *cond = POP();
if (Py_IsFalse(cond)) {
_Py_DECREF_IMMORTAL(cond);
_Py_DECREF_NO_DEALLOC(cond);
DISPATCH();
}
if (Py_IsTrue(cond)) {
_Py_DECREF_IMMORTAL(cond);
_Py_DECREF_NO_DEALLOC(cond);
JUMPBY(-oparg);
CHECK_EVAL_BREAKER();
DISPATCH();
Expand All @@ -4014,10 +4014,10 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
TARGET(POP_JUMP_FORWARD_IF_TRUE) {
PyObject *cond = POP();
if (Py_IsFalse(cond)) {
_Py_DECREF_IMMORTAL(cond);
_Py_DECREF_NO_DEALLOC(cond);
}
else if (Py_IsTrue(cond)) {
_Py_DECREF_IMMORTAL(cond);
_Py_DECREF_NO_DEALLOC(cond);
JUMPBY(oparg);
}
else {
Expand All @@ -4042,7 +4042,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
CHECK_EVAL_BREAKER();
DISPATCH();
}
_Py_DECREF_IMMORTAL(value);
_Py_DECREF_NO_DEALLOC(value);
DISPATCH();
}

Expand All @@ -4058,7 +4058,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
TARGET(POP_JUMP_BACKWARD_IF_NONE) {
PyObject *value = POP();
if (Py_IsNone(value)) {
_Py_DECREF_IMMORTAL(value);
_Py_DECREF_NO_DEALLOC(value);
JUMPBY(-oparg);
CHECK_EVAL_BREAKER();
}
Expand All @@ -4071,7 +4071,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
TARGET(POP_JUMP_FORWARD_IF_NONE) {
PyObject *value = POP();
if (Py_IsNone(value)) {
_Py_DECREF_IMMORTAL(value);
_Py_DECREF_NO_DEALLOC(value);
JUMPBY(oparg);
}
else {
Expand All @@ -4085,7 +4085,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
int err;
if (Py_IsTrue(cond)) {
STACK_SHRINK(1);
_Py_DECREF_IMMORTAL(cond);
_Py_DECREF_NO_DEALLOC(cond);
DISPATCH();
}
if (Py_IsFalse(cond)) {
Expand All @@ -4109,7 +4109,7 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
int err;
if (Py_IsFalse(cond)) {
STACK_SHRINK(1);
_Py_DECREF_IMMORTAL(cond);
_Py_DECREF_NO_DEALLOC(cond);
DISPATCH();
}
if (Py_IsTrue(cond)) {
Expand Down
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