1  #ifndef Py_INTERNAL_GLOBAL_OBJECTS_H
       2  #define Py_INTERNAL_GLOBAL_OBJECTS_H
       3  #ifdef __cplusplus
       4  extern "C" {
       5  #endif
       6  
       7  #ifndef Py_BUILD_CORE
       8  #  error "this header requires Py_BUILD_CORE define"
       9  #endif
      10  
      11  #include "pycore_gc.h"              // PyGC_Head
      12  #include "pycore_global_strings.h"  // struct _Py_global_strings
      13  
      14  
      15  // These would be in pycore_long.h if it weren't for an include cycle.
      16  #define _PY_NSMALLPOSINTS           257
      17  #define _PY_NSMALLNEGINTS           5
      18  
      19  
      20  // Only immutable objects should be considered runtime-global.
      21  // All others must be per-interpreter.
      22  
      23  #define _Py_GLOBAL_OBJECT(NAME) \
      24      _PyRuntime.global_objects.NAME
      25  #define _Py_SINGLETON(NAME) \
      26      _Py_GLOBAL_OBJECT(singletons.NAME)
      27  
      28  struct _Py_global_objects {
      29      struct {
      30          /* Small integers are preallocated in this array so that they
      31           * can be shared.
      32           * The integers that are preallocated are those in the range
      33           * -_PY_NSMALLNEGINTS (inclusive) to _PY_NSMALLPOSINTS (exclusive).
      34           */
      35          PyLongObject small_ints[_PY_NSMALLNEGINTS + _PY_NSMALLPOSINTS];
      36  
      37          PyBytesObject bytes_empty;
      38          struct {
      39              PyBytesObject ob;
      40              char eos;
      41          } bytes_characters[256];
      42  
      43          struct _Py_global_strings strings;
      44  
      45          _PyGC_Head_UNUSED _tuple_empty_gc_not_used;
      46          PyTupleObject tuple_empty;
      47      } singletons;
      48  };
      49  
      50  
      51  #ifdef __cplusplus
      52  }
      53  #endif
      54  #endif /* !Py_INTERNAL_GLOBAL_OBJECTS_H */