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GH-127705: Add debug mode for _PyStackRefs inspired by HPy debug mode (GH-128121)

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Mark Shannon 2024-12-20 16:52:20 +00:00 • committed by GitHub
parent 78ffba4221
commit 128cc47fbd
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12 changed files with 395 additions and 33 deletions
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29
Python/pystate.c
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@ -19,6 +19,7 @@
#include "pycore_pymem.h" // _PyMem_SetDefaultAllocator()
#include "pycore_pystate.h"
#include "pycore_runtime_init.h" // _PyRuntimeState_INIT
#include "pycore_stackref.h" // Py_STACKREF_DEBUG
#include "pycore_obmalloc.h" // _PyMem_obmalloc_state_on_heap()
#include "pycore_uniqueid.h" // _PyObject_FinalizePerThreadRefcounts()
@ -663,6 +664,23 @@ init_interpreter(PyInterpreterState *interp,
/* Fix the self-referential, statically initialized fields. */
interp->dtoa = (struct _dtoa_state)_dtoa_state_INIT(interp);
}
#if !defined(Py_GIL_DISABLED) && defined(Py_STACKREF_DEBUG)
interp->next_stackref = 1;
_Py_hashtable_allocator_t alloc = {
.malloc = malloc,
.free = free,
};
interp->stackref_debug_table = _Py_hashtable_new_full(
_Py_hashtable_hash_ptr,
_Py_hashtable_compare_direct,
NULL,
NULL,
&alloc
);
_Py_stackref_associate(interp, Py_None, PyStackRef_None);
_Py_stackref_associate(interp, Py_False, PyStackRef_False);
_Py_stackref_associate(interp, Py_True, PyStackRef_True);
#endif
interp->_initialized = 1;
return _PyStatus_OK();
@ -768,6 +786,11 @@ PyInterpreterState_New(void)
return interp;
}
#if !defined(Py_GIL_DISABLED) && defined(Py_STACKREF_DEBUG)
extern void
_Py_stackref_report_leaks(PyInterpreterState *interp);
#endif
static void
interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate)
{
@ -877,6 +900,12 @@ interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate)
Py_CLEAR(interp->sysdict);
Py_CLEAR(interp->builtins);
#if !defined(Py_GIL_DISABLED) && defined(Py_STACKREF_DEBUG)
_Py_stackref_report_leaks(interp);
_Py_hashtable_destroy(interp->stackref_debug_table);
interp->stackref_debug_table = NULL;
#endif
if (tstate->interp == interp) {
/* We are now safe to fix tstate->_status.cleared. */
// XXX Do this (much) earlier?