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cpython/Modules/hashtable.h at 3.5 · python/cpython · GitHub
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hashtable.h
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#ifndef
Py_HASHTABLE_H
#define
Py_HASHTABLE_H
/* The whole API is private */
#ifndef
Py_LIMITED_API
typedef
struct
_Py_slist_item_s
{
struct
_Py_slist_item_s
*
next
;
}
_Py_slist_item_t
;
typedef
struct
{
_Py_slist_item_t
*
head
;
}
_Py_slist_t
;
#define
_Py_SLIST_ITEM_NEXT
(
ITEM
) (((_Py_slist_item_t *)ITEM)->next)
#define
_Py_SLIST_HEAD
(
SLIST
) (((_Py_slist_t *)SLIST)->head)
typedef
struct
{
/* used by _Py_hashtable_t.buckets to link entries */
_Py_slist_item_t
_Py_slist_item
;
const
void
*
key
;
Py_uhash_t
key_hash
;
/* data follows */
}
_Py_hashtable_entry_t
;
#define
_Py_HASHTABLE_ENTRY_DATA
(
ENTRY
) \
((char *)(ENTRY) + sizeof(_Py_hashtable_entry_t))
#define
_Py_HASHTABLE_ENTRY_DATA_AS_VOID_P
(
ENTRY
) \
(*(void **)_Py_HASHTABLE_ENTRY_DATA(ENTRY))
#define
_Py_HASHTABLE_ENTRY_READ_DATA
(
TABLE
,
DATA
,
DATA_SIZE
,
ENTRY
) \
do { \
assert((DATA_SIZE) == (TABLE)->data_size); \
memcpy(DATA, _Py_HASHTABLE_ENTRY_DATA(ENTRY), DATA_SIZE); \
} while (0)
typedef
Py_uhash_t
(
*
_Py_hashtable_hash_func
) (
const
void
*
key
);
typedef
int
(
*
_Py_hashtable_compare_func
) (
const
void
*
key
,
const
_Py_hashtable_entry_t
*
he
);
typedef
void
*
(
*
_Py_hashtable_copy_data_func
)(
void
*
data
);
typedef
void
(
*
_Py_hashtable_free_data_func
)(
void
*
data
);
typedef
size_t
(
*
_Py_hashtable_get_data_size_func
)(
void
*
data
);
typedef
struct
{
/* allocate a memory block */
void
*
(
*
malloc
) (
size_t
size
);
/* release a memory block */
void
(
*
free
) (
void
*
ptr
);
}
_Py_hashtable_allocator_t
;
typedef
struct
{
size_t
num_buckets
;
size_t
entries
;
/* Total number of entries in the table. */
_Py_slist_t
*
buckets
;
size_t
data_size
;
_Py_hashtable_hash_func
hash_func
;
_Py_hashtable_compare_func
compare_func
;
_Py_hashtable_copy_data_func
copy_data_func
;
_Py_hashtable_free_data_func
free_data_func
;
_Py_hashtable_get_data_size_func
get_data_size_func
;
_Py_hashtable_allocator_t
alloc
;
}
_Py_hashtable_t
;
/* hash and compare functions for integers and pointers */
PyAPI_FUNC
(
Py_uhash_t
)
_Py_hashtable_hash_ptr
(
const
void
*
key
);
PyAPI_FUNC
(
Py_uhash_t
)
_Py_hashtable_hash_int
(
const
void
*
key
);
PyAPI_FUNC
(
int
)
_Py_hashtable_compare_direct
(
const
void
*
key
,
const
_Py_hashtable_entry_t
*
entry
);
PyAPI_FUNC
(
_Py_hashtable_t
*
)
_Py_hashtable_new
(
size_t
data_size
,
_Py_hashtable_hash_func
hash_func
,
_Py_hashtable_compare_func
compare_func
);
PyAPI_FUNC
(
_Py_hashtable_t
*
)
_Py_hashtable_new_full
(
size_t
data_size
,
size_t
init_size
,
_Py_hashtable_hash_func
hash_func
,
_Py_hashtable_compare_func
compare_func
,
_Py_hashtable_copy_data_func
copy_data_func
,
_Py_hashtable_free_data_func
free_data_func
,
_Py_hashtable_get_data_size_func
get_data_size_func
,
_Py_hashtable_allocator_t
*
allocator
);
PyAPI_FUNC
(
_Py_hashtable_t
*
)
_Py_hashtable_copy
(
_Py_hashtable_t
*
src
);
PyAPI_FUNC
(
void
)
_Py_hashtable_clear
(
_Py_hashtable_t
*
ht
);
PyAPI_FUNC
(
void
)
_Py_hashtable_destroy
(
_Py_hashtable_t
*
ht
);
typedef
int
(
*
_Py_hashtable_foreach_func
) (
_Py_hashtable_entry_t
*
entry
,
void
*
arg
);
PyAPI_FUNC
(
int
)
_Py_hashtable_foreach
(
_Py_hashtable_t
*
ht
,
_Py_hashtable_foreach_func
func
,
void
*
arg
);
PyAPI_FUNC
(
size_t
)
_Py_hashtable_size
(
_Py_hashtable_t
*
ht
);
PyAPI_FUNC
(
_Py_hashtable_entry_t
*
)
_Py_hashtable_get_entry
(
_Py_hashtable_t
*
ht
,
const
void
*
key
);
PyAPI_FUNC
(
int
)
_Py_hashtable_set
(
_Py_hashtable_t
*
ht
,
const
void
*
key
,
void
*
data
,
size_t
data_size
);
PyAPI_FUNC
(
int
)
_Py_hashtable_get
(
_Py_hashtable_t
*
ht
,
const
void
*
key
,
void
*
data
,
size_t
data_size
);
PyAPI_FUNC
(
int
)
_Py_hashtable_pop
(
_Py_hashtable_t
*
ht
,
const
void
*
key
,
void
*
data
,
size_t
data_size
);
PyAPI_FUNC
(
void
)
_Py_hashtable_delete
(
_Py_hashtable_t
*
ht
,
const
void
*
key
);
#define
_Py_HASHTABLE_SET
(
TABLE
,
KEY
,
DATA
) \
_Py_hashtable_set(TABLE, KEY, &(DATA), sizeof(DATA))
#define
_Py_HASHTABLE_GET
(
TABLE
,
KEY
,
DATA
) \
_Py_hashtable_get(TABLE, KEY, &(DATA), sizeof(DATA))
#endif
/* Py_LIMITED_API */
#endif
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