Merge branch 'main' into zb/bolt

Doc/library/importlib.rst

@@ -380,13 +380,15 @@ ABC hierarchy::
 
 .. class:: ResourceLoader
 
+   *Superseded by TraversableResources*
+
     An abstract base class for a :term:`loader` which implements the optional
     :pep:`302` protocol for loading arbitrary resources from the storage
     back-end.
 
     .. deprecated:: 3.7
        This ABC is deprecated in favour of supporting resource loading
-       through :class:`importlib.resources.abc.ResourceReader`.
+       through :class:`importlib.resources.abc.TraversableResources`.
 
     .. abstractmethod:: get_data(path)
 

Doc/library/sys.rst

@@ -8,7 +8,7 @@
 
 This module provides access to some variables used or maintained by the
 interpreter and to functions that interact strongly with the interpreter. It is
-always available.
+always available. Unless explicitly noted otherwise, all variables are read-only.
 
 
 .. data:: abiflags

Include/cpython/object.h

@@ -475,9 +475,6 @@ partially-deallocated object. To check this, the tp_dealloc function must be
 passed as second argument to Py_TRASHCAN_BEGIN().
 */
 
-/* Python 3.9 private API, invoked by the macros below. */
-PyAPI_FUNC(int) _PyTrash_begin(PyThreadState *tstate, PyObject *op);
-PyAPI_FUNC(void) _PyTrash_end(PyThreadState *tstate);
 
 PyAPI_FUNC(void) _PyTrash_thread_deposit_object(PyThreadState *tstate, PyObject *op);
 PyAPI_FUNC(void) _PyTrash_thread_destroy_chain(PyThreadState *tstate);

Include/cpython/pystats.h

@@ -31,7 +31,7 @@
 
 #define PYSTATS_MAX_UOP_ID 512
 
-#define SPECIALIZATION_FAILURE_KINDS 36
+#define SPECIALIZATION_FAILURE_KINDS 37
 
 /* Stats for determining who is calling PyEval_EvalFrame */
 #define EVAL_CALL_TOTAL 0

Include/internal/pycore_code.h

@@ -100,6 +100,7 @@ typedef struct {
 
 typedef struct {
     _Py_BackoffCounter counter;
+    uint16_t external_cache[4];
 } _PyBinaryOpCache;
 
 #define INLINE_CACHE_ENTRIES_BINARY_OP CACHE_ENTRIES(_PyBinaryOpCache)
@@ -438,7 +439,7 @@ write_u64(uint16_t *p, uint64_t val)
 }
 
 static inline void
-write_obj(uint16_t *p, PyObject *val)
+write_ptr(uint16_t *p, void *val)
 {
     memcpy(p, &val, sizeof(val));
 }
@@ -576,6 +577,16 @@ adaptive_counter_backoff(_Py_BackoffCounter counter) {
     return restart_backoff_counter(counter);
 }
 
+/* Specialization Extensions */
+
+/* callbacks for an external specialization */
+typedef int (*binaryopguardfunc)(PyObject *lhs, PyObject *rhs);
+typedef PyObject *(*binaryopactionfunc)(PyObject *lhs, PyObject *rhs);
+
+typedef struct {
+    binaryopguardfunc guard;
+    binaryopactionfunc action;
+} _PyBinaryOpSpecializationDescr;
 
 /* Comparison bit masks. */
 

Include/internal/pycore_dict.h

@@ -114,6 +114,16 @@ extern Py_ssize_t _Py_dict_lookup_threadsafe_stackref(PyDictObject *mp, PyObject
 
 extern Py_ssize_t _PyDict_LookupIndex(PyDictObject *, PyObject *);
 extern Py_ssize_t _PyDictKeys_StringLookup(PyDictKeysObject* dictkeys, PyObject *key);
+
+/* Look up a string key in an all unicode dict keys, assign the keys object a version, and
+ * store it in version.
+ *
+ * Returns DKIX_ERROR if key is not a string or if the keys object is not all
+ * strings.
+ *
+ * Returns DKIX_EMPTY if the key is not present.
+ */
+extern Py_ssize_t _PyDictKeys_StringLookupAndVersion(PyDictKeysObject* dictkeys, PyObject *key, uint32_t *version);
 extern Py_ssize_t _PyDictKeys_StringLookupSplit(PyDictKeysObject* dictkeys, PyObject *key);
 PyAPI_FUNC(PyObject *)_PyDict_LoadGlobal(PyDictObject *, PyDictObject *, PyObject *);
 PyAPI_FUNC(void) _PyDict_LoadGlobalStackRef(PyDictObject *, PyDictObject *, PyObject *, _PyStackRef *);

Include/internal/pycore_gc.h

@@ -45,12 +45,13 @@ static inline PyObject* _Py_FROM_GC(PyGC_Head *gc) {
  * the per-object lock.
  */
 #ifdef Py_GIL_DISABLED
-#  define _PyGC_BITS_TRACKED        (1)     // Tracked by the GC
-#  define _PyGC_BITS_FINALIZED      (2)     // tp_finalize was called
-#  define _PyGC_BITS_UNREACHABLE    (4)
-#  define _PyGC_BITS_FROZEN         (8)
-#  define _PyGC_BITS_SHARED         (16)
-#  define _PyGC_BITS_DEFERRED       (64)    // Use deferred reference counting
+#  define _PyGC_BITS_TRACKED        (1<<0)     // Tracked by the GC
+#  define _PyGC_BITS_FINALIZED      (1<<1)     // tp_finalize was called
+#  define _PyGC_BITS_UNREACHABLE    (1<<2)
+#  define _PyGC_BITS_FROZEN         (1<<3)
+#  define _PyGC_BITS_SHARED         (1<<4)
+#  define _PyGC_BITS_ALIVE          (1<<5)    // Reachable from a known root.
+#  define _PyGC_BITS_DEFERRED       (1<<6)    // Use deferred reference counting
 #endif
 
 #ifdef Py_GIL_DISABLED
@@ -330,6 +331,9 @@ struct _gc_runtime_state {
        collections, and are awaiting to undergo a full collection for
        the first time. */
     Py_ssize_t long_lived_pending;
+
+    /* True if gc.freeze() has been used. */
+    int freeze_active;
 #endif
 };
 

Include/internal/pycore_magic_number.h

@@ -266,6 +266,7 @@ Known values:
     Python 3.14a4 3611 (Add NOT_TAKEN instruction)
     Python 3.14a4 3612 (Add POP_ITER and INSTRUMENTED_POP_ITER)
     Python 3.14a4 3613 (Add LOAD_CONST_MORTAL instruction)
+    Python 3.14a5 3614 (Add BINARY_OP_EXTEND)
 
     Python 3.15 will start with 3650
 
@@ -278,7 +279,7 @@ PC/launcher.c must also be updated.
 
 */
 
-#define PYC_MAGIC_NUMBER 3613
+#define PYC_MAGIC_NUMBER 3614
 /* This is equivalent to converting PYC_MAGIC_NUMBER to 2 bytes
    (little-endian) and then appending b'\r\n'. */
 #define PYC_MAGIC_NUMBER_TOKEN \

Include/internal/pycore_object.h

@@ -299,12 +299,6 @@ Py_ssize_t _Py_ExplicitMergeRefcount(PyObject *op, Py_ssize_t extra);
 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) {

Include/internal/pycore_optimizer.h

@@ -98,11 +98,6 @@ struct _PyOptimizerObject {
 };
 
 /** Test support **/
-typedef struct {
-    _PyOptimizerObject base;
-    int64_t count;
-} _PyCounterOptimizerObject;
-
 _PyOptimizerObject *_Py_SetOptimizer(PyInterpreterState *interp, _PyOptimizerObject* optimizer);
 
 
@@ -119,7 +114,6 @@ PyAPI_FUNC(void) _Py_Executor_DependsOn(_PyExecutorObject *executor, void *obj);
 // Export for '_testinternalcapi' shared extension.
 PyAPI_FUNC(_PyOptimizerObject *) _Py_GetOptimizer(void);
 PyAPI_FUNC(int) _Py_SetTier2Optimizer(_PyOptimizerObject* optimizer);
-PyAPI_FUNC(PyObject *) _PyOptimizer_NewCounter(void);
 PyAPI_FUNC(PyObject *) _PyOptimizer_NewUOpOptimizer(void);
 
 #define _Py_MAX_ALLOWED_BUILTINS_MODIFICATIONS 3
@@ -150,8 +144,6 @@ int _Py_uop_analyze_and_optimize(struct _PyInterpreterFrame *frame,
     _PyUOpInstruction *trace, int trace_len, int curr_stackentries,
     _PyBloomFilter *dependencies);
 
-extern PyTypeObject _PyCounterExecutor_Type;
-extern PyTypeObject _PyCounterOptimizer_Type;
 extern PyTypeObject _PyDefaultOptimizer_Type;
 extern PyTypeObject _PyUOpExecutor_Type;
 extern PyTypeObject _PyUOpOptimizer_Type;

Include/internal/pycore_tracemalloc.h

@@ -25,7 +25,7 @@ struct _PyTraceMalloc_Config {
     } initialized;
 
     /* Is tracemalloc tracing memory allocations?
-       Variable protected by the GIL */
+       Variable protected by the TABLES_LOCK(). */
     int tracing;
 
     /* limit of the number of frames in a traceback, 1 by default.
@@ -85,14 +85,14 @@ struct _tracemalloc_runtime_state {
     size_t peak_traced_memory;
     /* Hash table used as a set to intern filenames:
        PyObject* => PyObject*.
-       Protected by the GIL */
+       Protected by the TABLES_LOCK(). */
     _Py_hashtable_t *filenames;
     /* Buffer to store a new traceback in traceback_new().
-       Protected by the GIL. */
+       Protected by the TABLES_LOCK(). */
     struct tracemalloc_traceback *traceback;
     /* Hash table used as a set to intern tracebacks:
        traceback_t* => traceback_t*
-       Protected by the GIL */
+       Protected by the TABLES_LOCK(). */
     _Py_hashtable_t *tracebacks;
     /* pointer (void*) => trace (trace_t*).
        Protected by TABLES_LOCK(). */
@@ -144,7 +144,7 @@ extern PyObject* _PyTraceMalloc_GetTraces(void);
 extern PyObject* _PyTraceMalloc_GetObjectTraceback(PyObject *obj);
 
 /* Initialize tracemalloc */
-extern int _PyTraceMalloc_Init(void);
+extern PyStatus _PyTraceMalloc_Init(void);
 
 /* Start tracemalloc */
 extern int _PyTraceMalloc_Start(int max_nframe);