Add debug offsets for free threaded builds (#123041)

Include/internal/pycore_runtime.h

@@ -44,6 +44,15 @@ struct _gilstate_runtime_state {
 
 /* Runtime audit hook state */
 
+#define _Py_Debug_Cookie "xdebugpy"
+
+#ifdef Py_GIL_DISABLED
+# define _Py_Debug_gilruntimestate_enabled offsetof(struct _gil_runtime_state, enabled)
+# define _Py_Debug_Free_Threaded 1
+#else
+# define _Py_Debug_gilruntimestate_enabled 0
+# define _Py_Debug_Free_Threaded 0
+#endif
 typedef struct _Py_AuditHookEntry {
     struct _Py_AuditHookEntry *next;
     Py_AuditHookFunction hookCFunction;
@@ -53,6 +62,7 @@ typedef struct _Py_AuditHookEntry {
 typedef struct _Py_DebugOffsets {
     char cookie[8];
     uint64_t version;
+    uint64_t free_threaded;
     // Runtime state offset;
     struct _runtime_state {
         uint64_t size;
@@ -71,6 +81,8 @@ typedef struct _Py_DebugOffsets {
         uint64_t sysdict;
         uint64_t builtins;
         uint64_t ceval_gil;
+        uint64_t gil_runtime_state;
+        uint64_t gil_runtime_state_enabled;
         uint64_t gil_runtime_state_locked;
         uint64_t gil_runtime_state_holder;
     } interpreter_state;
@@ -122,20 +134,57 @@ typedef struct _Py_DebugOffsets {
     struct _type_object {
         uint64_t size;
         uint64_t tp_name;
+        uint64_t tp_repr;
+        uint64_t tp_flags;
     } type_object;
 
     // PyTuple object offset;
     struct _tuple_object {
         uint64_t size;
         uint64_t ob_item;
+        uint64_t ob_size;
     } tuple_object;
 
+    // PyList object offset;
+    struct _list_object {
+        uint64_t size;
+        uint64_t ob_item;
+        uint64_t ob_size;
+    } list_object;
+
+    // PyDict object offset;
+    struct _dict_object {
+        uint64_t size;
+        uint64_t ma_keys;
+        uint64_t ma_values;
+    } dict_object;
+
+    // PyFloat object offset;
+    struct _float_object {
+        uint64_t size;
+        uint64_t ob_fval;
+    } float_object;
+
+    // PyLong object offset;
+    struct _long_object {
+        uint64_t size;
+        uint64_t lv_tag;
+        uint64_t ob_digit;
+    } long_object;
+
+    // PyBytes object offset;
+    struct _bytes_object {
+        uint64_t size;
+        uint64_t ob_size;
+        uint64_t ob_sval;
+    } bytes_object;
+
     // Unicode object offset;
     struct _unicode_object {
         uint64_t size;
         uint64_t state;
         uint64_t length;
-        size_t asciiobject_size;
+        uint64_t asciiobject_size;
     } unicode_object;
 
     // GC runtime state offset;

Include/internal/pycore_runtime_init.h

@@ -29,11 +29,12 @@ extern PyTypeObject _PyExc_MemoryError;
 /* The static initializers defined here should only be used
    in the runtime init code (in pystate.c and pylifecycle.c). */
 
-#define _PyRuntimeState_INIT(runtime) \
+#define _PyRuntimeState_INIT(runtime, debug_cookie) \
     { \
         .debug_offsets = { \
-            .cookie = "xdebugpy", \
+            .cookie = debug_cookie, \
             .version = PY_VERSION_HEX, \
+            .free_threaded = _Py_Debug_Free_Threaded, \
             .runtime_state = { \
                 .size = sizeof(_PyRuntimeState), \
                 .finalizing = offsetof(_PyRuntimeState, _finalizing), \
@@ -49,6 +50,8 @@ extern PyTypeObject _PyExc_MemoryError;
                 .sysdict = offsetof(PyInterpreterState, sysdict), \
                 .builtins = offsetof(PyInterpreterState, builtins), \
                 .ceval_gil = offsetof(PyInterpreterState, ceval.gil), \
+                .gil_runtime_state = offsetof(PyInterpreterState, _gil), \
+                .gil_runtime_state_enabled = _Py_Debug_gilruntimestate_enabled, \
                 .gil_runtime_state_locked = offsetof(PyInterpreterState, _gil.locked), \
                 .gil_runtime_state_holder = offsetof(PyInterpreterState, _gil.last_holder), \
             }, \
@@ -90,10 +93,37 @@ extern PyTypeObject _PyExc_MemoryError;
             .type_object = { \
                 .size = sizeof(PyTypeObject), \
                 .tp_name = offsetof(PyTypeObject, tp_name), \
+                .tp_repr = offsetof(PyTypeObject, tp_repr), \
+                .tp_flags = offsetof(PyTypeObject, tp_flags), \
             }, \
             .tuple_object = { \
                 .size = sizeof(PyTupleObject), \
                 .ob_item = offsetof(PyTupleObject, ob_item), \
+                .ob_size = offsetof(PyTupleObject, ob_base.ob_size), \
+            }, \
+            .list_object = { \
+                .size = sizeof(PyListObject), \
+                .ob_item = offsetof(PyListObject, ob_item), \
+                .ob_size = offsetof(PyListObject, ob_base.ob_size), \
+            }, \
+            .dict_object = { \
+                .size = sizeof(PyDictObject), \
+                .ma_keys = offsetof(PyDictObject, ma_keys), \
+                .ma_values = offsetof(PyDictObject, ma_values), \
+            }, \
+            .float_object = { \
+                .size = sizeof(PyFloatObject), \
+                .ob_fval = offsetof(PyFloatObject, ob_fval), \
+            }, \
+            .long_object = { \
+                .size = sizeof(PyLongObject), \
+                .lv_tag = offsetof(_PyLongValue, lv_tag), \
+                .ob_digit = offsetof(_PyLongValue, ob_digit), \
+            }, \
+            .bytes_object = { \
+                .size = sizeof(PyBytesObject), \
+                .ob_size = offsetof(PyBytesObject, ob_base.ob_size), \
+                .ob_sval = offsetof(PyBytesObject, ob_sval), \
             }, \
             .unicode_object = { \
                 .size = sizeof(PyUnicodeObject), \

Python/pylifecycle.c

@@ -104,7 +104,7 @@ _PyRuntimeState _PyRuntime
 #if defined(__linux__) && (defined(__GNUC__) || defined(__clang__))
 __attribute__ ((section (".PyRuntime")))
 #endif
-= _PyRuntimeState_INIT(_PyRuntime);
+= _PyRuntimeState_INIT(_PyRuntime, _Py_Debug_Cookie);
 _Py_COMP_DIAG_POP
 
 static int runtime_initialized = 0;

Python/pystate.c

@@ -390,7 +390,7 @@ _Py_COMP_DIAG_IGNORE_DEPR_DECLS
    Note that we initialize "initial" relative to _PyRuntime,
    to ensure pre-initialized pointers point to the active
    runtime state (and not "initial"). */
-static const _PyRuntimeState initial = _PyRuntimeState_INIT(_PyRuntime);
+static const _PyRuntimeState initial = _PyRuntimeState_INIT(_PyRuntime, "");
 _Py_COMP_DIAG_POP
 
 #define LOCKS_INIT(runtime) \
@@ -455,6 +455,8 @@ _PyRuntimeState_Init(_PyRuntimeState *runtime)
         // Py_Initialize() must be running again.
         // Reset to _PyRuntimeState_INIT.
         memcpy(runtime, &initial, sizeof(*runtime));
+        // Preserve the cookie from the original runtime.
+        memcpy(runtime->debug_offsets.cookie, _Py_Debug_Cookie, 8);
         assert(!runtime->_initialized);
     }