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gh-81057: Move the Allocators to _PyRuntimeState (gh-99217)

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The global allocators were stored in 3 static global variables: _PyMem_Raw, _PyMem, and _PyObject.  State for the "small block" allocator was stored in another 13.  That makes a total of 16 global variables. We are moving all 16 to the _PyRuntimeState struct as part of the work for gh-81057.  (If PEP 684 is accepted then we will follow up by moving them all to PyInterpreterState.)

https://github.com/python/cpython/issues/81057
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Eric Snow 2022-11-11 16:30:46 -07:00 • committed by GitHub
parent 55c96e8053
commit 67807cfc87
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14 changed files with 1129 additions and 925 deletions
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68
Include/internal/pycore_obmalloc_init.h Normal file
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#ifndef Py_INTERNAL_OBMALLOC_INIT_H
#define Py_INTERNAL_OBMALLOC_INIT_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
/****************************************************/
/* the default object allocator's state initializer */
#define PTA(pools, x) \
((poolp )((uint8_t *)&(pools.used[2*(x)]) - 2*sizeof(pymem_block *)))
#define PT(p, x) PTA(p, x), PTA(p, x)
#define PT_8(p, start) \
PT(p, start), \
PT(p, start+1), \
PT(p, start+2), \
PT(p, start+3), \
PT(p, start+4), \
PT(p, start+5), \
PT(p, start+6), \
PT(p, start+7)
#if NB_SMALL_SIZE_CLASSES <= 8
# define _obmalloc_pools_INIT(p) \
{ PT_8(p, 0) }
#elif NB_SMALL_SIZE_CLASSES <= 16
# define _obmalloc_pools_INIT(p) \
{ PT_8(p, 0), PT_8(p, 8) }
#elif NB_SMALL_SIZE_CLASSES <= 24
# define _obmalloc_pools_INIT(p) \
{ PT_8(p, 0), PT_8(p, 8), PT_8(p, 16) }
#elif NB_SMALL_SIZE_CLASSES <= 32
# define _obmalloc_pools_INIT(p) \
{ PT_8(p, 0), PT_8(p, 8), PT_8(p, 16), PT_8(p, 24) }
#elif NB_SMALL_SIZE_CLASSES <= 40
# define _obmalloc_pools_INIT(p) \
{ PT_8(p, 0), PT_8(p, 8), PT_8(p, 16), PT_8(p, 24), PT_8(p, 32) }
#elif NB_SMALL_SIZE_CLASSES <= 48
# define _obmalloc_pools_INIT(p) \
{ PT_8(p, 0), PT_8(p, 8), PT_8(p, 16), PT_8(p, 24), PT_8(p, 32), PT_8(p, 40) }
#elif NB_SMALL_SIZE_CLASSES <= 56
# define _obmalloc_pools_INIT(p) \
{ PT_8(p, 0), PT_8(p, 8), PT_8(p, 16), PT_8(p, 24), PT_8(p, 32), PT_8(p, 40), PT_8(p, 48) }
#elif NB_SMALL_SIZE_CLASSES <= 64
# define _obmalloc_pools_INIT(p) \
{ PT_8(p, 0), PT_8(p, 8), PT_8(p, 16), PT_8(p, 24), PT_8(p, 32), PT_8(p, 40), PT_8(p, 48), PT_8(p, 56) }
#else
# error "NB_SMALL_SIZE_CLASSES should be less than 64"
#endif
#define _obmalloc_state_INIT(obmalloc) \
{ \
.pools = { \
.used = _obmalloc_pools_INIT(obmalloc.pools), \
}, \
}
#ifdef __cplusplus
}
#endif
#endif // !Py_INTERNAL_OBMALLOC_INIT_H