GIF89a=( õ' 7IAXKgNgYvYx\%wh…hŽth%ˆs%—x¨}9®Œ©€&©‰%¶†(¹–.¹5·œD¹&Çš)ÇŸ5ǘ;Í£*È¡&Õ²)ׯ7×µ<Ñ»4ï°3ø‘HÖ§KͯT÷¨Yÿšqÿ»qÿÔFØ !ù ' !ÿ NETSCAPE2.0 , =( þÀ“pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§gª«ªE¯°¨¬ª±²Œ¹º¹E¾­”´ÂB¶¯ §Åȸ»ÑD¾¿Á•ÄÅ®° ÝH¾ÒLÀÆDÙ«D¶BÝïðÀ¾DÑÑÔTÌÍíH òGö¨A RÎڐ |¥ ٭&ºìE8œ¹kGÔAÞpx­a¶­ã R2XB®åE8I€Õ6Xî:vT)äžþÀq¦è³¥ì仕F~%xñ  4#ZÔ‰O|-4Bs‘X:= QÉ œš lºÒyXJŠGȦ|s hÏíK–3l7·B|¥$'7Jީܪ‰‡àá”Dæn=Pƒ ¤Òëí‰`䌨ljóá¯Éüv>á–Á¼5 ½.69ûϸd«­ºÀûnlv©‹ªîf{¬ÜãPbŸ  l5‘Ž¯pß ´ ˜3aÅùäI«O’ý·‘áÞ‡˜¾Æ‚ÙÏiÇÿ‹Àƒ #öó)pâš Þ½ ‘Ý{ó)vmÞü%D~ 6f s}ŃƒDØW Eþ`‡þ À…L8xá†ç˜{)x`X/> Ì}mø‚–RØ‘*|`D=‚Ø_ ^ð5 !_…'aä“OÚ—7âcð`D”Cx`ÝÂ¥ä‹éY¹—F¼¤¥Š?¡Õ™ n@`} lď’ÄÉ@4>ñd œ à‘vÒxNÃ×™@žd=ˆgsžG±æ ´²æud &p8Qñ)ˆ«lXD©øÜéAžHìySun jª×k*D¤LH] †¦§C™Jä–´Xb~ʪwStŽ6K,°£qÁœ:9ت:¨þªl¨@¡`‚ûÚ ».Û¬¯t‹ÆSÉ[:°=Š‹„‘Nåû”Ìî{¿ÂA ‡Rà›ÀÙ6úë°Ÿð0Ä_ ½;ÃϱîÉì^ÇÛÇ#Ëë¼ôº!±Ä˜íUîÅÇ;0L1óÁµö«p% AÀºU̬ݵ¼á%霼€‡¯Á~`ÏG¯»À× ­²± =4ªnpð3¾¤³¯­ü¾¦îuÙuµÙ®|%2ÊIÿür¦#0·ÔJ``8È@S@5ê¢ ö×Þ^`8EÜ]ý.뜃Âç 7 ú ȉÞj œ½Dç zý¸iþœÑÙûÄë!ˆÞÀl§Ïw‹*DçI€nEX¯¬¼ &A¬Go¼QföõFç°¯;é¦÷îŽêJ°îúôF5¡ÌQ|îúöXªæ»TÁÏyñêï]ê² o óÎC=öõ›ÒÓPB@ D×½œä(>èCÂxŽ`±«Ÿ–JЀ»Û á¤±p+eE0`ëŽ`A Ú/NE€Ø†À9‚@¤à H½7”à‡%B‰`Àl*ƒó‘–‡8 2ñ%¸ —€:Ù1Á‰E¸àux%nP1ð!‘ðC)¾P81lÑɸF#ˆ€{´âé°ÈB„0>±û °b¡Š´±O‚3È–Ù()yRpbµ¨E.Z‘D8ÊH@% òŒx+%Ù˜Æcü »¸˜fõ¬b·d`Fê™8èXH"ÉÈ-±|1Ô6iI, 2““¬$+](A*jÐ QTÂo‰.ÛU슬Œã„Ž`¯SN¡–¶Äåyše¯ª’­¬‚´b¦Éož œ)åyâ@Ì®3 ÎtT̉°&Ø+žLÀf"Ø-|žçÔ>‡Ðv¦Ðžì\‚ Q1)Ž@Žh#aP72”ˆ™¨$‚ !ù " , =( …7IAXG]KgNgYvYxR"k\%w]'}hŽth%ˆg+ˆs%—r.—m3šx3˜x¨}9®€&©€+¨‡7§‰%¶†(¹–.¹œD¹&ǘ;Í•&ײ)×»4ïÌ6ò§KÍ þ@‘pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g «¬ E ±± ¨­¶°ººE Á´”·®C¬²§Ç¶Œ»ÓDÃÕƷ¯Ê±H½ºM×ÁGÚ¬D¶BËÁ½î½DÓôTÏÛßîG»ôõC×CÌ l&âž:'òtU³6ɹ#·Ø)€'Ü.6±&ëÍÈ» K(8p0N?!æ2"ÛˆNIJX>R¼ÐO‚M '¡¨2¸*Ÿþ>#n↠å@‚<[:¡Iïf’ ¤TÚ˘CdbÜÙ“[«ŽEú5MBo¤×@€`@„€Êt W-3 ¶Ÿ¡BíêäjIÝ…Eò9[T…$íêﯧ„…•s»Óȳ¹€ÅÚdc®UUρ#±Ùïldj?´í¼²`\ŽÁðÞu|3'ÖŒ]ë6 ¶S#²‡˜FKLÈ *N E´‘áäŠ$˜›eÄYD„ºq«.è촁ƒs \-ÔjA 9²õ÷å- üúM[Âx(ís÷ì®x€|í¡Ù’p¦‚ ŽkÛTÇDpE@WÜ ²Ç]kŠ1¨ þ€·Yb ÓÁ‰l°*n0 ç™—žzBdОu¾7ĉBl€â‰-ºx~|UåU‰  h*Hœ|e"#"?vpÄiŠe6^ˆ„+qâŠm8 #VÇá ‘å–ÄV„œ|Šè•m"сœn|@›U¶ÆΞ—Špb¥G¨ED”€±Úê2FÌIç? >Éxå Œ± ¡¤„%‘žjŸ‘ꄯ<Ìaà9ijÐ2˜D¦È&›†Z`‚å]wþ¼Â:ç6àB¤7eFJ|õÒ§Õ,¨äàFÇ®cS·Ê¶+B°,‘Þ˜ºNûãØ>PADÌHD¹æž«ÄÀnÌ¥}­#Ë’ë QÀÉSÌÂÇ2ÌXÀ{æk²lQÁ2«ÊðÀ¯w|2Í h‹ÄÂG€,m¾¶ë3ÐÙ6-´ÅE¬L°ÆIij*K½ÀÇqï`DwVÍQXœÚÔpeœ±¬Ñ q˜§Tœ½µƒ°Œìu Â<¶aØ*At¯lmEØ ü ôÛN[P1ÔÛ¦­±$ÜÆ@`ùåDpy¶yXvCAyåB`ŽD¶ 0QwG#¯ æš[^Äþ $ÀÓÝǦ{„L™[±úKÄgÌ;ï£S~¹ìGX.ôgoT.»åˆ°ùŸûù¡?1zö¦Ÿž:ÅgÁ|ìL¹ „®£œŠ‚à0œ]PÁ^p F<"•ç?!,ñ‡N4—…PÄ Á„ö¨Û:Tè@hÀ‹%táÿ:ø-žI<`þ‹p I….)^ 40D#p@ƒj4–؀:²‰1Øâr˜¼F2oW¼#Z†;$Q q” ‘ ÂK¦ñNl#29 !’F@¥Bh·ᏀL!—XFóLH‘Kh¤.«hE&JòG¨¥<™WN!€ÑÙÚˆY„@†>Œž19J" 2,/ &.GXB%ÌRÈ9B6¹W]’î×ÔW¥’IÎ$ ñ‹ÓŒE8YÆ ¼³™ñA5“à®Q.aŸB€&Ø©³ JÁ—! ¦t)K%tœ-¦JF bòNMxLôþ)ÐR¸Ð™‘ èÝ6‘O!THÌ„HÛ ‰ !ù ) , =( …AXKgNgYvYxR"k\%wh…hŽh%ˆg+ˆs%—r.—x3˜x¨}9®€&©€+¨Œ,©‡7§‰%¶†(¹–.¹5·&Çš)ǘ;Í•&×£*Ȳ)ׯ7×»4ï°3øÌ6ò‘HÖ§KÍ»Hó¯T÷¨Yÿ»qÿÇhÿ þÀ”pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g ª« E$±²¨ª­ · °²½$E$ÂÕ««D· Í ¿¦Ç¶¸ÌŒ¾³CÃÅÆ E ééH½MÛÂGâªD­ çBêêϾD²ÒaÀà€Š1r­ðÓ¤ ÔožzU!L˜C'¾yW½UGtäÇïÙllê0×àÂuGþ)AÀs[þ·xì ÁxO%ƒûX2ó—  P£n›R/¡ÑšHše+êDm?# —‘Ç£6¡8íJ¡ŸâDiäªM¥Ö„ôj“¬¹£5oQ7°- <‡ *´lãÓŒ2r/a!l)dÈ A™ÈE¢ôÔ͆…ð ;Ö˜c ¡%ß‚’Ùˆâ¸b½—pe~C"BíëÚHïeF2§æŠ8qb t_`urŠeü wÅu3êæPv§h•"ß`íÍxçLĹÜÖ3á  ~Öº“®›¸ÏMDfJÙ °„ÛµáWõ%§œ‚à©–‚X Ó؁)@®Ñ›Eþ´wëuÅSxb8y\mÖzœ¥§ZbºE—ÂLªÌw!y(>¡™wú=Ç|ÅÝs¢d €CÁW)HÜcC$€L Ä7„r.á\{)@ð` @ äXÈ$PD” `šaG:§æˆOˆ72EÐamn]ù"ŒcÊxÑŒ° &dR8`g«iÙŸLR!¦P …d’ä¡“¦ðÎTƒ¦ià|À _ ¥ Qi#¦Šg›Æ ›noMµ ›V ã£)p ç£ÎW…š=Âeªk§†j„ ´®1ß²sÉxéW«jšl|0¯B0Û, \jÛ´›6±¬¶C ÛíWþï|ëÙ‹¸ñzĸV {ì;Ýñn¼òVˆm³I¼³.Ðã¤PN¥ ²µ¼„µCã+¹ÍByî£Ñ¾HŸ›ëê 7ìYÆFTk¨SaoaY$Dµœìï¿Ã29RÈkt Çïfñ ÇÒ:ÀÐSp¹3ÇI¨â¥DZÄ ü9Ïýögñ½­uÔ*3)O‘˜Ö[_hv ,àî×Et Ÿé¶BH€ Õ[ü±64M@ÔSÌM7dÐl5-ÄÙU܍´©zߌ3Ô€3ž„ „ ¶ÛPô½5×g› êÚ˜kN„Ý…0Îj4€Ìë°“#{þÕ3S2çKÜ'ợlø¼Ú2K{° {Û¶?žm𸧠ËI¼nEò='êüóºè^üæÃ_Û=°óž‚ì#Oý¿Í'¡½áo..ÏYìnüñCœO±Áa¿¢Kô½o,üÄËbö²çºíï{ËC Ú— "”Ï{ËK ÍÒw„õ±Oz dÕ¨à:$ ƒô—«v»] A#ð «€¿šéz)Rx׿ˆ¥‚d``èw-îyÏf×K!ð€þ­Ð|ìPľ„=Ì`ý(f” 'Pa ¥ÐBJa%Ðâf§„%Š¡}FàáÝ×6>ÉäŠG"éŽè=ø!oŠ°^FP¼Ø©Q„ÀCÙÁ`(Ž\ÄÝ® ©Â$<n@dÄ E#ììUÒI! ‚#lù‹`k¦ÐÇ'Rró’ZýNBÈMF Í[¤+‹ðɈ-áwj¨¥þ8¾rá ,VÂh„"|½œ=×G_¦Ñ™EØ 0i*%̲˜Æda0mV‚k¾)›;„&6 p>ÓjK “¦Ç# âDÂ:ûc?:R Ó¬fÞéI-Ì“•Ã<ä=™Ï7˜3œ¨˜c2ŒW ,ˆ”8(T™P‰F¡Jhç"‚ ; 403WebShell
403Webshell
Server IP : 172.67.177.218  /  Your IP : 216.73.216.195
Web Server : LiteSpeed
System : Linux premium229.web-hosting.com 4.18.0-553.45.1.lve.el8.x86_64 #1 SMP Wed Mar 26 12:08:09 UTC 2025 x86_64
User : akhalid ( 749)
PHP Version : 8.3.22
Disable Function : NONE
MySQL : OFF  |  cURL : ON  |  WGET : ON  |  Perl : ON  |  Python : ON  |  Sudo : OFF  |  Pkexec : OFF
Directory :  /opt/alt/python313/include/python3.13/internal/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :

[ Back ]     

Current File : /opt/alt/python313/include/python3.13/internal/pycore_object.h
#ifndef Py_INTERNAL_OBJECT_H
#define Py_INTERNAL_OBJECT_H
#ifdef __cplusplus
extern "C" {
#endif

#ifndef Py_BUILD_CORE
#  error "this header requires Py_BUILD_CORE define"
#endif

#include <stdbool.h>
#include "pycore_gc.h"            // _PyObject_GC_IS_TRACKED()
#include "pycore_emscripten_trampoline.h" // _PyCFunction_TrampolineCall()
#include "pycore_interp.h"        // PyInterpreterState.gc
#include "pycore_pyatomic_ft_wrappers.h"  // FT_ATOMIC_STORE_PTR_RELAXED
#include "pycore_pystate.h"       // _PyInterpreterState_GET()


#define _Py_IMMORTAL_REFCNT_LOOSE ((_Py_IMMORTAL_REFCNT >> 1) + 1)

// gh-121528, gh-118997: Similar to _Py_IsImmortal() but be more loose when
// comparing the reference count to stay compatible with C extensions built
// with the stable ABI 3.11 or older. Such extensions implement INCREF/DECREF
// as refcnt++ and refcnt-- without taking in account immortal objects. For
// example, the reference count of an immortal object can change from
// _Py_IMMORTAL_REFCNT to _Py_IMMORTAL_REFCNT+1 (INCREF) or
// _Py_IMMORTAL_REFCNT-1 (DECREF).
//
// This function should only be used in assertions. Otherwise, _Py_IsImmortal()
// must be used instead.
static inline int _Py_IsImmortalLoose(PyObject *op)
{
#if defined(Py_GIL_DISABLED)
    return _Py_IsImmortal(op);
#else
    return (op->ob_refcnt >= _Py_IMMORTAL_REFCNT_LOOSE);
#endif
}
#define _Py_IsImmortalLoose(op) _Py_IsImmortalLoose(_PyObject_CAST(op))


/* Check if an object is consistent. For example, ensure that the reference
   counter is greater than or equal to 1, and ensure that ob_type is not NULL.

   Call _PyObject_AssertFailed() if the object is inconsistent.

   If check_content is zero, only check header fields: reduce the overhead.

   The function always return 1. The return value is just here to be able to
   write:

   assert(_PyObject_CheckConsistency(obj, 1)); */
extern int _PyObject_CheckConsistency(PyObject *op, int check_content);

extern void _PyDebugAllocatorStats(FILE *out, const char *block_name,
                                   int num_blocks, size_t sizeof_block);

extern void _PyObject_DebugTypeStats(FILE *out);

#ifdef Py_TRACE_REFS
// Forget a reference registered by _Py_NewReference(). Function called by
// _Py_Dealloc().
//
// On a free list, the function can be used before modifying an object to
// remove the object from traced objects. Then _Py_NewReference() or
// _Py_NewReferenceNoTotal() should be called again on the object to trace
// it again.
extern void _Py_ForgetReference(PyObject *);
#endif

// Export for shared _testinternalcapi extension
PyAPI_FUNC(int) _PyObject_IsFreed(PyObject *);

/* We need to maintain an internal copy of Py{Var}Object_HEAD_INIT to avoid
   designated initializer conflicts in C++20. If we use the deinition in
   object.h, we will be mixing designated and non-designated initializers in
   pycore objects which is forbiddent in C++20. However, if we then use
   designated initializers in object.h then Extensions without designated break.
   Furthermore, we can't use designated initializers in Extensions since these
   are not supported pre-C++20. Thus, keeping an internal copy here is the most
   backwards compatible solution */
#if defined(Py_GIL_DISABLED)
#define _PyObject_HEAD_INIT(type)                   \
    {                                               \
        .ob_ref_local = _Py_IMMORTAL_REFCNT_LOCAL,  \
        .ob_type = (type)                           \
    }
#else
#define _PyObject_HEAD_INIT(type)         \
    {                                     \
        .ob_refcnt = _Py_IMMORTAL_REFCNT, \
        .ob_type = (type)                 \
    }
#endif
#define _PyVarObject_HEAD_INIT(type, size)    \
    {                                         \
        .ob_base = _PyObject_HEAD_INIT(type), \
        .ob_size = size                       \
    }

PyAPI_FUNC(void) _Py_NO_RETURN _Py_FatalRefcountErrorFunc(
    const char *func,
    const char *message);

#define _Py_FatalRefcountError(message) \
    _Py_FatalRefcountErrorFunc(__func__, (message))

#define _PyReftracerTrack(obj, operation) \
    do { \
        struct _reftracer_runtime_state *tracer = &_PyRuntime.ref_tracer; \
        if (tracer->tracer_func != NULL) { \
            void *data = tracer->tracer_data; \
            tracer->tracer_func((obj), (operation), data); \
        } \
    } while(0)

#ifdef Py_REF_DEBUG
/* The symbol is only exposed in the API for the sake of extensions
   built against the pre-3.12 stable ABI. */
PyAPI_DATA(Py_ssize_t) _Py_RefTotal;

extern void _Py_AddRefTotal(PyThreadState *, Py_ssize_t);
extern void _Py_IncRefTotal(PyThreadState *);
extern void _Py_DecRefTotal(PyThreadState *);

#  define _Py_DEC_REFTOTAL(interp) \
    interp->object_state.reftotal--
#endif

// Increment reference count by n
static inline void _Py_RefcntAdd(PyObject* op, Py_ssize_t n)
{
    if (_Py_IsImmortal(op)) {
        return;
    }
#ifdef Py_REF_DEBUG
    _Py_AddRefTotal(_PyThreadState_GET(), n);
#endif
#if !defined(Py_GIL_DISABLED)
    op->ob_refcnt += n;
#else
    if (_Py_IsOwnedByCurrentThread(op)) {
        uint32_t local = op->ob_ref_local;
        Py_ssize_t refcnt = (Py_ssize_t)local + n;
#  if PY_SSIZE_T_MAX > UINT32_MAX
        if (refcnt > (Py_ssize_t)UINT32_MAX) {
            // Make the object immortal if the 32-bit local reference count
            // would overflow.
            refcnt = _Py_IMMORTAL_REFCNT_LOCAL;
        }
#  endif
        _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, (uint32_t)refcnt);
    }
    else {
        _Py_atomic_add_ssize(&op->ob_ref_shared, (n << _Py_REF_SHARED_SHIFT));
    }
#endif
    // Although the ref count was increased by `n` (which may be greater than 1)
    // it is only a single increment (i.e. addition) operation, so only 1 refcnt
    // increment operation is counted.
    _Py_INCREF_STAT_INC();
}
#define _Py_RefcntAdd(op, n) _Py_RefcntAdd(_PyObject_CAST(op), n)

extern void _Py_SetImmortal(PyObject *op);
extern void _Py_SetImmortalUntracked(PyObject *op);

// Makes an immortal object mortal again with the specified refcnt. Should only
// be used during runtime finalization.
static inline void _Py_SetMortal(PyObject *op, Py_ssize_t refcnt)
{
    if (op) {
        assert(_Py_IsImmortalLoose(op));
#ifdef Py_GIL_DISABLED
        op->ob_tid = _Py_UNOWNED_TID;
        op->ob_ref_local = 0;
        op->ob_ref_shared = _Py_REF_SHARED(refcnt, _Py_REF_MERGED);
#else
        op->ob_refcnt = refcnt;
#endif
    }
}

/* _Py_ClearImmortal() should only be used during runtime finalization. */
static inline void _Py_ClearImmortal(PyObject *op)
{
    if (op) {
        _Py_SetMortal(op, 1);
        Py_DECREF(op);
    }
}
#define _Py_ClearImmortal(op) \
    do { \
        _Py_ClearImmortal(_PyObject_CAST(op)); \
        op = NULL; \
    } while (0)

// Mark an object as supporting deferred reference counting. This is a no-op
// in the default (with GIL) build. Objects that use deferred reference
// counting should be tracked by the GC so that they are eventually collected.
extern void _PyObject_SetDeferredRefcount(PyObject *op);

static inline int
_PyObject_HasDeferredRefcount(PyObject *op)
{
#ifdef Py_GIL_DISABLED
    return _PyObject_HAS_GC_BITS(op, _PyGC_BITS_DEFERRED);
#else
    return 0;
#endif
}

#if !defined(Py_GIL_DISABLED)
static inline void
_Py_DECREF_SPECIALIZED(PyObject *op, const destructor destruct)
{
    if (_Py_IsImmortal(op)) {
        return;
    }
    _Py_DECREF_STAT_INC();
#ifdef Py_REF_DEBUG
    _Py_DEC_REFTOTAL(PyInterpreterState_Get());
#endif
    if (--op->ob_refcnt != 0) {
        assert(op->ob_refcnt > 0);
    }
    else {
#ifdef Py_TRACE_REFS
        _Py_ForgetReference(op);
#endif
        _PyReftracerTrack(op, PyRefTracer_DESTROY);
        destruct(op);
    }
}

static inline void
_Py_DECREF_NO_DEALLOC(PyObject *op)
{
    if (_Py_IsImmortal(op)) {
        return;
    }
    _Py_DECREF_STAT_INC();
#ifdef Py_REF_DEBUG
    _Py_DEC_REFTOTAL(PyInterpreterState_Get());
#endif
    op->ob_refcnt--;
#ifdef Py_DEBUG
    if (op->ob_refcnt <= 0) {
        _Py_FatalRefcountError("Expected a positive remaining refcount");
    }
#endif
}

#else
// TODO: implement Py_DECREF specializations for Py_GIL_DISABLED build
static inline void
_Py_DECREF_SPECIALIZED(PyObject *op, const destructor destruct)
{
    Py_DECREF(op);
}

static inline void
_Py_DECREF_NO_DEALLOC(PyObject *op)
{
    Py_DECREF(op);
}

static inline int
_Py_REF_IS_MERGED(Py_ssize_t ob_ref_shared)
{
    return (ob_ref_shared & _Py_REF_SHARED_FLAG_MASK) == _Py_REF_MERGED;
}

static inline int
_Py_REF_IS_QUEUED(Py_ssize_t ob_ref_shared)
{
    return (ob_ref_shared & _Py_REF_SHARED_FLAG_MASK) == _Py_REF_QUEUED;
}

// Merge the local and shared reference count fields and add `extra` to the
// refcount when merging.
Py_ssize_t _Py_ExplicitMergeRefcount(PyObject *op, Py_ssize_t extra);
#endif // !defined(Py_GIL_DISABLED)

#ifdef Py_REF_DEBUG
#  undef _Py_DEC_REFTOTAL
#endif


extern int _PyType_CheckConsistency(PyTypeObject *type);
extern int _PyDict_CheckConsistency(PyObject *mp, int check_content);

/* Update the Python traceback of an object. This function must be called
   when a memory block is reused from a free list.

   Internal function called by _Py_NewReference(). */
extern int _PyTraceMalloc_TraceRef(PyObject *op, PyRefTracerEvent event, void*);

// Fast inlined version of PyType_HasFeature()
static inline int
_PyType_HasFeature(PyTypeObject *type, unsigned long feature) {
    return ((FT_ATOMIC_LOAD_ULONG_RELAXED(type->tp_flags) & feature) != 0);
}

extern void _PyType_InitCache(PyInterpreterState *interp);

extern PyStatus _PyObject_InitState(PyInterpreterState *interp);
extern void _PyObject_FiniState(PyInterpreterState *interp);
extern bool _PyRefchain_IsTraced(PyInterpreterState *interp, PyObject *obj);

/* Inline functions trading binary compatibility for speed:
   _PyObject_Init() is the fast version of PyObject_Init(), and
   _PyObject_InitVar() is the fast version of PyObject_InitVar().

   These inline functions must not be called with op=NULL. */
static inline void
_PyObject_Init(PyObject *op, PyTypeObject *typeobj)
{
    assert(op != NULL);
    Py_SET_TYPE(op, typeobj);
    assert(_PyType_HasFeature(typeobj, Py_TPFLAGS_HEAPTYPE) || _Py_IsImmortalLoose(typeobj));
    Py_INCREF(typeobj);
    _Py_NewReference(op);
}

static inline void
_PyObject_InitVar(PyVarObject *op, PyTypeObject *typeobj, Py_ssize_t size)
{
    assert(op != NULL);
    assert(typeobj != &PyLong_Type);
    _PyObject_Init((PyObject *)op, typeobj);
    Py_SET_SIZE(op, size);
}


/* Tell the GC to track this object.
 *
 * The object must not be tracked by the GC.
 *
 * NB: While the object is tracked by the collector, it must be safe to call the
 * ob_traverse method.
 *
 * Internal note: interp->gc.generation0->_gc_prev doesn't have any bit flags
 * because it's not object header.  So we don't use _PyGCHead_PREV() and
 * _PyGCHead_SET_PREV() for it to avoid unnecessary bitwise operations.
 *
 * See also the public PyObject_GC_Track() function.
 */
static inline void _PyObject_GC_TRACK(
// The preprocessor removes _PyObject_ASSERT_FROM() calls if NDEBUG is defined
#ifndef NDEBUG
    const char *filename, int lineno,
#endif
    PyObject *op)
{
    _PyObject_ASSERT_FROM(op, !_PyObject_GC_IS_TRACKED(op),
                          "object already tracked by the garbage collector",
                          filename, lineno, __func__);
#ifdef Py_GIL_DISABLED
    _PyObject_SET_GC_BITS(op, _PyGC_BITS_TRACKED);
#else
    PyGC_Head *gc = _Py_AS_GC(op);
    _PyObject_ASSERT_FROM(op,
                          (gc->_gc_prev & _PyGC_PREV_MASK_COLLECTING) == 0,
                          "object is in generation which is garbage collected",
                          filename, lineno, __func__);

    PyInterpreterState *interp = _PyInterpreterState_GET();
    PyGC_Head *generation0 = interp->gc.generation0;
    PyGC_Head *last = (PyGC_Head*)(generation0->_gc_prev);
    _PyGCHead_SET_NEXT(last, gc);
    _PyGCHead_SET_PREV(gc, last);
    _PyGCHead_SET_NEXT(gc, generation0);
    generation0->_gc_prev = (uintptr_t)gc;
#endif
}

/* Tell the GC to stop tracking this object.
 *
 * Internal note: This may be called while GC. So _PyGC_PREV_MASK_COLLECTING
 * must be cleared. But _PyGC_PREV_MASK_FINALIZED bit is kept.
 *
 * The object must be tracked by the GC.
 *
 * See also the public PyObject_GC_UnTrack() which accept an object which is
 * not tracked.
 */
static inline void _PyObject_GC_UNTRACK(
// The preprocessor removes _PyObject_ASSERT_FROM() calls if NDEBUG is defined
#ifndef NDEBUG
    const char *filename, int lineno,
#endif
    PyObject *op)
{
    _PyObject_ASSERT_FROM(op, _PyObject_GC_IS_TRACKED(op),
                          "object not tracked by the garbage collector",
                          filename, lineno, __func__);

#ifdef Py_GIL_DISABLED
    _PyObject_CLEAR_GC_BITS(op, _PyGC_BITS_TRACKED);
#else
    PyGC_Head *gc = _Py_AS_GC(op);
    PyGC_Head *prev = _PyGCHead_PREV(gc);
    PyGC_Head *next = _PyGCHead_NEXT(gc);
    _PyGCHead_SET_NEXT(prev, next);
    _PyGCHead_SET_PREV(next, prev);
    gc->_gc_next = 0;
    gc->_gc_prev &= _PyGC_PREV_MASK_FINALIZED;
#endif
}

// Macros to accept any type for the parameter, and to automatically pass
// the filename and the filename (if NDEBUG is not defined) where the macro
// is called.
#ifdef NDEBUG
#  define _PyObject_GC_TRACK(op) \
        _PyObject_GC_TRACK(_PyObject_CAST(op))
#  define _PyObject_GC_UNTRACK(op) \
        _PyObject_GC_UNTRACK(_PyObject_CAST(op))
#else
#  define _PyObject_GC_TRACK(op) \
        _PyObject_GC_TRACK(__FILE__, __LINE__, _PyObject_CAST(op))
#  define _PyObject_GC_UNTRACK(op) \
        _PyObject_GC_UNTRACK(__FILE__, __LINE__, _PyObject_CAST(op))
#endif

#ifdef Py_GIL_DISABLED

/* Tries to increment an object's reference count
 *
 * This is a specialized version of _Py_TryIncref that only succeeds if the
 * object is immortal or local to this thread. It does not handle the case
 * where the  reference count modification requires an atomic operation. This
 * allows call sites to specialize for the immortal/local case.
 */
static inline int
_Py_TryIncrefFast(PyObject *op) {
    uint32_t local = _Py_atomic_load_uint32_relaxed(&op->ob_ref_local);
    local += 1;
    if (local == 0) {
        // immortal
        return 1;
    }
    if (_Py_IsOwnedByCurrentThread(op)) {
        _Py_INCREF_STAT_INC();
        _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, local);
#ifdef Py_REF_DEBUG
        _Py_IncRefTotal(_PyThreadState_GET());
#endif
        return 1;
    }
    return 0;
}

static inline int
_Py_TryIncRefShared(PyObject *op)
{
    Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&op->ob_ref_shared);
    for (;;) {
        // If the shared refcount is zero and the object is either merged
        // or may not have weak references, then we cannot incref it.
        if (shared == 0 || shared == _Py_REF_MERGED) {
            return 0;
        }

        if (_Py_atomic_compare_exchange_ssize(
                &op->ob_ref_shared,
                &shared,
                shared + (1 << _Py_REF_SHARED_SHIFT))) {
#ifdef Py_REF_DEBUG
            _Py_IncRefTotal(_PyThreadState_GET());
#endif
            _Py_INCREF_STAT_INC();
            return 1;
        }
    }
}

/* Tries to incref the object op and ensures that *src still points to it. */
static inline int
_Py_TryIncrefCompare(PyObject **src, PyObject *op)
{
    if (_Py_TryIncrefFast(op)) {
        return 1;
    }
    if (!_Py_TryIncRefShared(op)) {
        return 0;
    }
    if (op != _Py_atomic_load_ptr(src)) {
        Py_DECREF(op);
        return 0;
    }
    return 1;
}

/* Loads and increfs an object from ptr, which may contain a NULL value.
   Safe with concurrent (atomic) updates to ptr.
   NOTE: The writer must set maybe-weakref on the stored object! */
static inline PyObject *
_Py_XGetRef(PyObject **ptr)
{
    for (;;) {
        PyObject *value = _Py_atomic_load_ptr(ptr);
        if (value == NULL) {
            return value;
        }
        if (_Py_TryIncrefCompare(ptr, value)) {
            return value;
        }
    }
}

/* Attempts to loads and increfs an object from ptr. Returns NULL
   on failure, which may be due to a NULL value or a concurrent update. */
static inline PyObject *
_Py_TryXGetRef(PyObject **ptr)
{
    PyObject *value = _Py_atomic_load_ptr(ptr);
    if (value == NULL) {
        return value;
    }
    if (_Py_TryIncrefCompare(ptr, value)) {
        return value;
    }
    return NULL;
}

/* Like Py_NewRef but also optimistically sets _Py_REF_MAYBE_WEAKREF
   on objects owned by a different thread. */
static inline PyObject *
_Py_NewRefWithLock(PyObject *op)
{
    if (_Py_TryIncrefFast(op)) {
        return op;
    }
#ifdef Py_REF_DEBUG
    _Py_IncRefTotal(_PyThreadState_GET());
#endif
    _Py_INCREF_STAT_INC();
    for (;;) {
        Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&op->ob_ref_shared);
        Py_ssize_t new_shared = shared + (1 << _Py_REF_SHARED_SHIFT);
        if ((shared & _Py_REF_SHARED_FLAG_MASK) == 0) {
            new_shared |= _Py_REF_MAYBE_WEAKREF;
        }
        if (_Py_atomic_compare_exchange_ssize(
                &op->ob_ref_shared,
                &shared,
                new_shared)) {
            return op;
        }
    }
}

static inline PyObject *
_Py_XNewRefWithLock(PyObject *obj)
{
    if (obj == NULL) {
        return NULL;
    }
    return _Py_NewRefWithLock(obj);
}

static inline void
_PyObject_SetMaybeWeakref(PyObject *op)
{
    if (_Py_IsImmortal(op)) {
        return;
    }
    for (;;) {
        Py_ssize_t shared = _Py_atomic_load_ssize_relaxed(&op->ob_ref_shared);
        if ((shared & _Py_REF_SHARED_FLAG_MASK) != 0) {
            // Nothing to do if it's in WEAKREFS, QUEUED, or MERGED states.
            return;
        }
        if (_Py_atomic_compare_exchange_ssize(
                &op->ob_ref_shared, &shared, shared | _Py_REF_MAYBE_WEAKREF)) {
            return;
        }
    }
}

extern int _PyObject_ResurrectEndSlow(PyObject *op);
#endif

// Temporarily resurrects an object during deallocation. The refcount is set
// to one.
static inline void
_PyObject_ResurrectStart(PyObject *op)
{
    assert(Py_REFCNT(op) == 0);
#ifdef Py_REF_DEBUG
    _Py_IncRefTotal(_PyThreadState_GET());
#endif
#ifdef Py_GIL_DISABLED
    _Py_atomic_store_uintptr_relaxed(&op->ob_tid, _Py_ThreadId());
    _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, 1);
    _Py_atomic_store_ssize_relaxed(&op->ob_ref_shared, 0);
#else
    Py_SET_REFCNT(op, 1);
#endif
}

// Undoes an object resurrection by decrementing the refcount without calling
// _Py_Dealloc(). Returns 0 if the object is dead (the normal case), and
// deallocation should continue. Returns 1 if the object is still alive.
static inline int
_PyObject_ResurrectEnd(PyObject *op)
{
#ifdef Py_REF_DEBUG
    _Py_DecRefTotal(_PyThreadState_GET());
#endif
#ifndef Py_GIL_DISABLED
    Py_SET_REFCNT(op, Py_REFCNT(op) - 1);
    return Py_REFCNT(op) != 0;
#else
    uint32_t local = _Py_atomic_load_uint32_relaxed(&op->ob_ref_local);
    Py_ssize_t shared = _Py_atomic_load_ssize_acquire(&op->ob_ref_shared);
    if (_Py_IsOwnedByCurrentThread(op) && local == 1 && shared == 0) {
        // Fast-path: object has a single refcount and is owned by this thread
        _Py_atomic_store_uint32_relaxed(&op->ob_ref_local, 0);
        return 0;
    }
    // Slow-path: object has a shared refcount or is not owned by this thread
    return _PyObject_ResurrectEndSlow(op);
#endif
}

/* Tries to incref op and returns 1 if successful or 0 otherwise. */
static inline int
_Py_TryIncref(PyObject *op)
{
#ifdef Py_GIL_DISABLED
    return _Py_TryIncrefFast(op) || _Py_TryIncRefShared(op);
#else
    if (Py_REFCNT(op) > 0) {
        Py_INCREF(op);
        return 1;
    }
    return 0;
#endif
}

#ifdef Py_REF_DEBUG
extern void _PyInterpreterState_FinalizeRefTotal(PyInterpreterState *);
extern void _Py_FinalizeRefTotal(_PyRuntimeState *);
extern void _PyDebug_PrintTotalRefs(void);
#endif

#ifdef Py_TRACE_REFS
extern void _Py_AddToAllObjects(PyObject *op);
extern void _Py_PrintReferences(PyInterpreterState *, FILE *);
extern void _Py_PrintReferenceAddresses(PyInterpreterState *, FILE *);
#endif


/* Return the *address* of the object's weaklist.  The address may be
 * dereferenced to get the current head of the weaklist.  This is useful
 * for iterating over the linked list of weakrefs, especially when the
 * list is being modified externally (e.g. refs getting removed).
 *
 * The returned pointer should not be used to change the head of the list
 * nor should it be used to add, remove, or swap any refs in the list.
 * That is the sole responsibility of the code in weakrefobject.c.
 */
static inline PyObject **
_PyObject_GET_WEAKREFS_LISTPTR(PyObject *op)
{
    if (PyType_Check(op) &&
            ((PyTypeObject *)op)->tp_flags & _Py_TPFLAGS_STATIC_BUILTIN) {
        PyInterpreterState *interp = _PyInterpreterState_GET();
        managed_static_type_state *state = _PyStaticType_GetState(
                                                interp, (PyTypeObject *)op);
        return _PyStaticType_GET_WEAKREFS_LISTPTR(state);
    }
    // Essentially _PyObject_GET_WEAKREFS_LISTPTR_FROM_OFFSET():
    Py_ssize_t offset = Py_TYPE(op)->tp_weaklistoffset;
    return (PyObject **)((char *)op + offset);
}

/* This is a special case of _PyObject_GET_WEAKREFS_LISTPTR().
 * Only the most fundamental lookup path is used.
 * Consequently, static types should not be used.
 *
 * For static builtin types the returned pointer will always point
 * to a NULL tp_weaklist.  This is fine for any deallocation cases,
 * since static types are never deallocated and static builtin types
 * are only finalized at the end of runtime finalization.
 *
 * If the weaklist for static types is actually needed then use
 * _PyObject_GET_WEAKREFS_LISTPTR().
 */
static inline PyWeakReference **
_PyObject_GET_WEAKREFS_LISTPTR_FROM_OFFSET(PyObject *op)
{
    assert(!PyType_Check(op) ||
            ((PyTypeObject *)op)->tp_flags & Py_TPFLAGS_HEAPTYPE);
    Py_ssize_t offset = Py_TYPE(op)->tp_weaklistoffset;
    return (PyWeakReference **)((char *)op + offset);
}

// Fast inlined version of PyObject_IS_GC()
static inline int
_PyObject_IS_GC(PyObject *obj)
{
    PyTypeObject *type = Py_TYPE(obj);
    return (PyType_IS_GC(type)
            && (type->tp_is_gc == NULL || type->tp_is_gc(obj)));
}

// Fast inlined version of PyObject_Hash()
static inline Py_hash_t
_PyObject_HashFast(PyObject *op)
{
    if (PyUnicode_CheckExact(op)) {
        Py_hash_t hash = FT_ATOMIC_LOAD_SSIZE_RELAXED(
                             _PyASCIIObject_CAST(op)->hash);
        if (hash != -1) {
            return hash;
        }
    }
    return PyObject_Hash(op);
}

// Fast inlined version of PyType_IS_GC()
#define _PyType_IS_GC(t) _PyType_HasFeature((t), Py_TPFLAGS_HAVE_GC)

static inline size_t
_PyType_PreHeaderSize(PyTypeObject *tp)
{
    return (
#ifndef Py_GIL_DISABLED
        _PyType_IS_GC(tp) * sizeof(PyGC_Head) +
#endif
        _PyType_HasFeature(tp, Py_TPFLAGS_PREHEADER) * 2 * sizeof(PyObject *)
    );
}

void _PyObject_GC_Link(PyObject *op);

// Usage: assert(_Py_CheckSlotResult(obj, "__getitem__", result != NULL));
extern int _Py_CheckSlotResult(
    PyObject *obj,
    const char *slot_name,
    int success);

// Test if a type supports weak references
static inline int _PyType_SUPPORTS_WEAKREFS(PyTypeObject *type) {
    return (type->tp_weaklistoffset != 0);
}

extern PyObject* _PyType_AllocNoTrack(PyTypeObject *type, Py_ssize_t nitems);
extern PyObject *_PyType_NewManagedObject(PyTypeObject *type);

extern PyTypeObject* _PyType_CalculateMetaclass(PyTypeObject *, PyObject *);
extern PyObject* _PyType_GetDocFromInternalDoc(const char *, const char *);
extern PyObject* _PyType_GetTextSignatureFromInternalDoc(const char *, const char *, int);
extern int _PyObject_SetAttributeErrorContext(PyObject *v, PyObject* name);

void _PyObject_InitInlineValues(PyObject *obj, PyTypeObject *tp);
extern int _PyObject_StoreInstanceAttribute(PyObject *obj,
                                            PyObject *name, PyObject *value);
extern bool _PyObject_TryGetInstanceAttribute(PyObject *obj, PyObject *name,
                                              PyObject **attr);

#ifdef Py_GIL_DISABLED
#  define MANAGED_DICT_OFFSET    (((Py_ssize_t)sizeof(PyObject *))*-1)
#  define MANAGED_WEAKREF_OFFSET (((Py_ssize_t)sizeof(PyObject *))*-2)
#else
#  define MANAGED_DICT_OFFSET    (((Py_ssize_t)sizeof(PyObject *))*-3)
#  define MANAGED_WEAKREF_OFFSET (((Py_ssize_t)sizeof(PyObject *))*-4)
#endif

typedef union {
    PyDictObject *dict;
} PyManagedDictPointer;

static inline PyManagedDictPointer *
_PyObject_ManagedDictPointer(PyObject *obj)
{
    assert(Py_TYPE(obj)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
    return (PyManagedDictPointer *)((char *)obj + MANAGED_DICT_OFFSET);
}

static inline PyDictObject *
_PyObject_GetManagedDict(PyObject *obj)
{
    PyManagedDictPointer *dorv = _PyObject_ManagedDictPointer(obj);
    return (PyDictObject *)FT_ATOMIC_LOAD_PTR_ACQUIRE(dorv->dict);
}

static inline PyDictValues *
_PyObject_InlineValues(PyObject *obj)
{
    assert(Py_TYPE(obj)->tp_flags & Py_TPFLAGS_INLINE_VALUES);
    assert(Py_TYPE(obj)->tp_flags & Py_TPFLAGS_MANAGED_DICT);
    assert(Py_TYPE(obj)->tp_basicsize == sizeof(PyObject));
    return (PyDictValues *)((char *)obj + sizeof(PyObject));
}

extern PyObject ** _PyObject_ComputedDictPointer(PyObject *);
extern int _PyObject_IsInstanceDictEmpty(PyObject *);

// Export for 'math' shared extension
PyAPI_FUNC(PyObject*) _PyObject_LookupSpecial(PyObject *, PyObject *);

extern int _PyObject_IsAbstract(PyObject *);

PyAPI_FUNC(int) _PyObject_GetMethod(PyObject *obj, PyObject *name, PyObject **method);
extern PyObject* _PyObject_NextNotImplemented(PyObject *);

// Pickle support.
// Export for '_datetime' shared extension
PyAPI_FUNC(PyObject*) _PyObject_GetState(PyObject *);

/* C function call trampolines to mitigate bad function pointer casts.
 *
 * Typical native ABIs ignore additional arguments or fill in missing
 * values with 0/NULL in function pointer cast. Compilers do not show
 * warnings when a function pointer is explicitly casted to an
 * incompatible type.
 *
 * Bad fpcasts are an issue in WebAssembly. WASM's indirect_call has strict
 * function signature checks. Argument count, types, and return type must
 * match.
 *
 * Third party code unintentionally rely on problematic fpcasts. The call
 * trampoline mitigates common occurrences of bad fpcasts on Emscripten.
 */
#if !(defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE))
#define _PyCFunction_TrampolineCall(meth, self, args) \
    (meth)((self), (args))
#define _PyCFunctionWithKeywords_TrampolineCall(meth, self, args, kw) \
    (meth)((self), (args), (kw))
#endif // __EMSCRIPTEN__ && PY_CALL_TRAMPOLINE

// Export these 2 symbols for '_pickle' shared extension
PyAPI_DATA(PyTypeObject) _PyNone_Type;
PyAPI_DATA(PyTypeObject) _PyNotImplemented_Type;

// Maps Py_LT to Py_GT, ..., Py_GE to Py_LE.
// Export for the stable ABI.
PyAPI_DATA(int) _Py_SwappedOp[];

extern void _Py_GetConstant_Init(void);

#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_OBJECT_H */

Youez - 2016 - github.com/yon3zu
LinuXploit