Ruby 1.9.3p327(2012-11-10revision37606)
Data Structures | Defines | Typedefs | Functions | Variables
st.c File Reference
#include "ruby/ruby.h"
#include <stdio.h>
#include <string.h>
Include dependency graph for st.c:

Go to the source code of this file.

Data Structures

struct  st_table_entry

Defines

#define ST_DEFAULT_MAX_DENSITY   5
#define ST_DEFAULT_INIT_TABLE_SIZE   11
#define malloc   xmalloc
#define calloc   xcalloc
#define free(x)   xfree(x)
#define numberof(array)   (int)(sizeof(array) / sizeof((array)[0]))
#define alloc(type)   (type*)malloc((size_t)sizeof(type))
#define Calloc(n, s)   (char*)calloc((n),(s))
#define EQUAL(table, x, y)   ((x)==(y) || (*(table)->type->compare)((x),(y)) == 0)
#define do_hash(key, table)   (unsigned int)(st_index_t)(*(table)->type->hash)((key))
#define do_hash_bin(key, table)   (do_hash((key), (table))%(table)->num_bins)
#define MINSIZE   8
#define MAX_PACKED_NUMHASH   (ST_DEFAULT_INIT_TABLE_SIZE/2)
#define PTR_NOT_EQUAL(table, ptr, hash_val, key)   ((ptr) != 0 && ((ptr)->hash != (hash_val) || !EQUAL((table), (key), (ptr)->key)))
#define COLLISION
#define FOUND_ENTRY
#define FIND_ENTRY(table, ptr, hash_val, bin_pos)
#define collision_check   0
#define collision_check   1
#define MORE_PACKABLE_P(table)
#define ADD_DIRECT(table, key, value, hash_val, bin_pos)
#define REMOVE_ENTRY(table, ptr)
#define FNV1_32A_INIT   0x811c9dc5
#define FNV_32_PRIME   0x01000193
#define UNALIGNED_WORD_ACCESS   0
#define MURMUR   2
#define MurmurMagic_1   (st_index_t)0xc6a4a793
#define MurmurMagic_2   (st_index_t)0x5bd1e995
#define MurmurMagic   MurmurMagic_2
#define murmur_step(h, k)   murmur((h), (k), 16)
#define murmur1(h)   murmur_step((h), 24)
#define data_at(n)   (st_index_t)((unsigned char)data[(n)])
#define UNALIGNED_ADD_4   UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
#define UNALIGNED_ADD_ALL   UNALIGNED_ADD_4
#define UNALIGNED_ADD(n)
#define UNALIGNED_ADD(n)
#define UNALIGNED_ADD(n)

Typedefs

typedef struct st_table_entry st_table_entry

Functions

static st_index_t strhash (st_data_t)
static st_index_t strcasehash (st_data_t)
static void rehash (st_table *)
static st_index_t new_size (st_index_t size)
st_tablest_init_table_with_size (const struct st_hash_type *type, st_index_t size)
st_tablest_init_table (const struct st_hash_type *type)
st_tablest_init_numtable (void)
st_tablest_init_numtable_with_size (st_index_t size)
st_tablest_init_strtable (void)
st_tablest_init_strtable_with_size (st_index_t size)
st_tablest_init_strcasetable (void)
st_tablest_init_strcasetable_with_size (st_index_t size)
void st_clear (st_table *table)
void st_free_table (st_table *table)
size_t st_memsize (const st_table *table)
int st_lookup (st_table *table, register st_data_t key, st_data_t *value)
int st_get_key (st_table *table, register st_data_t key, st_data_t *result)
static void unpack_entries (register st_table *table)
int st_insert (register st_table *table, register st_data_t key, st_data_t value)
int st_insert2 (register st_table *table, register st_data_t key, st_data_t value, st_data_t(*func)(st_data_t))
void st_add_direct (st_table *table, st_data_t key, st_data_t value)
static void rehash (register st_table *table)
st_tablest_copy (st_table *old_table)
int st_delete (register st_table *table, register st_data_t *key, st_data_t *value)
int st_delete_safe (register st_table *table, register st_data_t *key, st_data_t *value, st_data_t never)
void st_cleanup_safe (st_table *table, st_data_t never)
int st_foreach (st_table *table, int(*func)(ANYARGS), st_data_t arg)
static st_index_t murmur (st_index_t h, st_index_t k, int r)
static st_index_t murmur_finish (st_index_t h)
st_index_t st_hash (const void *ptr, size_t len, st_index_t h)
st_index_t st_hash_uint32 (st_index_t h, uint32_t i)
st_index_t st_hash_uint (st_index_t h, st_index_t i)
st_index_t st_hash_end (st_index_t h)
st_index_t st_hash_start (st_index_t h)
int st_strcasecmp (const char *s1, const char *s2)
int st_strncasecmp (const char *s1, const char *s2, size_t n)
int st_numcmp (st_data_t x, st_data_t y)
st_index_t st_numhash (st_data_t n)

Variables

static struct st_hash_type type_numhash
static struct st_hash_type type_strhash
static struct st_hash_type type_strcasehash
static const unsigned int primes []

Define Documentation

#define ADD_DIRECT (   table,
  key,
  value,
  hash_val,
  bin_pos 
)
Value:
do {\
    st_table_entry *entry;\
    if ((table)->num_entries > ST_DEFAULT_MAX_DENSITY * (table)->num_bins) {\
        rehash(table);\
        (bin_pos) = (hash_val) % (table)->num_bins;\
    }\
    \
    entry = alloc(st_table_entry);\
    \
    entry->hash = (hash_val);\
    entry->key = (key);\
    entry->record = (value);\
    entry->next = (table)->bins[(bin_pos)];\
    if ((table)->head != 0) {\
        entry->fore = 0;\
        (entry->back = (table)->tail)->fore = entry;\
        (table)->tail = entry;\
    }\
    else {\
        (table)->head = (table)->tail = entry;\
        entry->fore = entry->back = 0;\
    }\
    (table)->bins[(bin_pos)] = entry;\
    (table)->num_entries++;\
} while (0)

Definition at line 389 of file st.c.

Referenced by st_add_direct(), st_insert(), and st_insert2().

#define alloc (   type)    (type*)malloc((size_t)sizeof(type))
#define Calloc (   n,
 
)    (char*)calloc((n),(s))

Definition at line 70 of file st.c.

Referenced by st_copy(), and st_init_table_with_size().

#define calloc   xcalloc

Definition at line 63 of file st.c.

#define COLLISION

Definition at line 305 of file st.c.

#define collision_check   0

Definition at line 383 of file st.c.

#define collision_check   1

Definition at line 383 of file st.c.

#define data_at (   n)    (st_index_t)((unsigned char)data[(n)])
#define do_hash (   key,
  table 
)    (unsigned int)(st_index_t)(*(table)->type->hash)((key))

Definition at line 75 of file st.c.

Referenced by st_add_direct(), st_get_key(), st_insert(), st_insert2(), and st_lookup().

#define do_hash_bin (   key,
  table 
)    (do_hash((key), (table))%(table)->num_bins)

Definition at line 76 of file st.c.

Referenced by st_delete(), and st_delete_safe().

#define EQUAL (   table,
  x,
 
)    ((x)==(y) || (*(table)->type->compare)((x),(y)) == 0)

Definition at line 72 of file st.c.

Referenced by st_delete(), and st_delete_safe().

#define FIND_ENTRY (   table,
  ptr,
  hash_val,
  bin_pos 
)
Value:
do {\
    (bin_pos) = (hash_val)%(table)->num_bins;\
    (ptr) = (table)->bins[(bin_pos)];\
    FOUND_ENTRY;\
    if (PTR_NOT_EQUAL((table), (ptr), (hash_val), key)) {\
        COLLISION;\
        while (PTR_NOT_EQUAL((table), (ptr)->next, (hash_val), key)) {\
            (ptr) = (ptr)->next;\
        }\
        (ptr) = (ptr)->next;\
    }\
} while (0)

Definition at line 309 of file st.c.

Referenced by st_foreach(), st_get_key(), st_insert(), st_insert2(), and st_lookup().

#define FNV1_32A_INIT   0x811c9dc5

Definition at line 976 of file st.c.

Referenced by strcasehash(), and strhash().

#define FNV_32_PRIME   0x01000193

Definition at line 981 of file st.c.

Referenced by strcasehash().

#define FOUND_ENTRY

Definition at line 306 of file st.c.

#define free (   x)    xfree(x)

Definition at line 64 of file st.c.

Referenced by st_cleanup_safe(), st_clear(), st_copy(), st_delete(), st_foreach(), and st_free_table().

#define malloc   xmalloc

Definition at line 62 of file st.c.

#define MAX_PACKED_NUMHASH   (ST_DEFAULT_INIT_TABLE_SIZE/2)

Definition at line 164 of file st.c.

Referenced by st_init_table_with_size(), and unpack_entries().

#define MINSIZE   8

Definition at line 82 of file st.c.

Referenced by new_size().

#define MORE_PACKABLE_P (   table)
Value:
((st_index_t)((table)->num_entries+1) * 2 <= (table)->num_bins && \
     (table)->num_entries+1 <= MAX_PACKED_NUMHASH)

Definition at line 385 of file st.c.

Referenced by st_add_direct(), st_insert(), and st_insert2().

#define MURMUR   2

Definition at line 1017 of file st.c.

#define murmur1 (   h)    murmur_step((h), 24)

Definition at line 1070 of file st.c.

Referenced by st_hash_uint().

#define murmur_step (   h,
 
)    murmur((h), (k), 16)

Definition at line 1065 of file st.c.

Referenced by st_hash(), st_hash_end(), and st_hash_uint32().

#define MurmurMagic   MurmurMagic_2

Definition at line 1028 of file st.c.

Referenced by murmur(), murmur_finish(), and st_hash().

#define MurmurMagic_1   (st_index_t)0xc6a4a793

Definition at line 1020 of file st.c.

#define MurmurMagic_2   (st_index_t)0x5bd1e995

Definition at line 1021 of file st.c.

#define numberof (   array)    (int)(sizeof(array) / sizeof((array)[0]))

Definition at line 67 of file st.c.

Referenced by new_size().

#define PTR_NOT_EQUAL (   table,
  ptr,
  hash_val,
  key 
)    ((ptr) != 0 && ((ptr)->hash != (hash_val) || !EQUAL((table), (key), (ptr)->key)))

Definition at line 284 of file st.c.

#define REMOVE_ENTRY (   table,
  ptr 
)
Value:
do                                      \
    {                                                                   \
        if ((ptr)->fore == 0 && (ptr)->back == 0) {                     \
            (table)->head = 0;                                          \
            (table)->tail = 0;                                          \
        }                                                               \
        else {                                                          \
            st_table_entry *fore = (ptr)->fore, *back = (ptr)->back;    \
            if (fore) fore->back = back;                                \
            if (back) back->fore = fore;                                \
            if ((ptr) == (table)->head) (table)->head = fore;           \
            if ((ptr) == (table)->tail) (table)->tail = back;           \
        }                                                               \
        (table)->num_entries--;                                         \
    } while (0)

Definition at line 607 of file st.c.

Referenced by st_delete(), st_delete_safe(), and st_foreach().

#define ST_DEFAULT_INIT_TABLE_SIZE   11

Definition at line 29 of file st.c.

#define ST_DEFAULT_MAX_DENSITY   5

Definition at line 28 of file st.c.

#define UNALIGNED_ADD (   n)
Value:
case (n) + 1: \
        t |= data_at(n) << CHAR_BIT*(n)
#define UNALIGNED_ADD (   n)
Value:
case (n) + 1: \
                d |= data_at(n) << CHAR_BIT*(n)
#define UNALIGNED_ADD (   n)
Value:
case SIZEOF_ST_INDEX_T - (n) - 1:       \
                t |= data_at(n) << CHAR_BIT*(n)
#define UNALIGNED_ADD_4   UNALIGNED_ADD(2); UNALIGNED_ADD(1); UNALIGNED_ADD(0)
#define UNALIGNED_ADD_ALL   UNALIGNED_ADD_4

Referenced by st_hash().

#define UNALIGNED_WORD_ACCESS   0

Definition at line 1012 of file st.c.


Typedef Documentation

Definition at line 18 of file st.c.


Function Documentation

static st_index_t murmur ( st_index_t  h,
st_index_t  k,
int  r 
) [inline, static]

Definition at line 1033 of file st.c.

References MurmurMagic.

Referenced by murmur_finish().

static st_index_t murmur_finish ( st_index_t  h) [inline, static]

Definition at line 1052 of file st.c.

References murmur(), and MurmurMagic.

Referenced by st_hash().

static st_index_t new_size ( st_index_t  size) [static]
static void rehash ( st_table ) [static]
static void rehash ( register st_table table) [static]
void st_add_direct ( st_table table,
st_data_t  key,
st_data_t  value 
)
void st_cleanup_safe ( st_table table,
st_data_t  never 
)
void st_clear ( st_table table)
st_table* st_copy ( st_table old_table)
int st_delete ( register st_table table,
register st_data_t key,
st_data_t value 
)
int st_delete_safe ( register st_table table,
register st_data_t key,
st_data_t value,
st_data_t  never 
)
int st_foreach ( st_table table,
int(*)(ANYARGS)  func,
st_data_t  arg 
)
void st_free_table ( st_table table)
int st_get_key ( st_table table,
register st_data_t  key,
st_data_t result 
)
st_index_t st_hash ( const void *  ptr,
size_t  len,
st_index_t  h 
)

Definition at line 1074 of file st.c.

References CHAR_BIT, murmur_finish(), murmur_step, MurmurMagic, SIZEOF_ST_INDEX_T, and UNALIGNED_ADD_ALL.

Referenced by hash_i(), and strhash().

st_index_t st_hash_end ( st_index_t  h)

Definition at line 1238 of file st.c.

References murmur_step.

st_index_t st_hash_start ( st_index_t  h)

Definition at line 1247 of file st.c.

st_index_t st_hash_uint ( st_index_t  h,
st_index_t  i 
)

Definition at line 1207 of file st.c.

References murmur1.

st_index_t st_hash_uint32 ( st_index_t  h,
uint32_t  i 
)

Definition at line 1201 of file st.c.

References murmur_step.

st_table* st_init_numtable ( void  )
st_table* st_init_numtable_with_size ( st_index_t  size)

Definition at line 211 of file st.c.

References st_init_table_with_size().

Referenced by init_case_fold_table(), and Init_sym().

st_table* st_init_strcasetable ( void  )
st_table* st_init_strcasetable_with_size ( st_index_t  size)

Definition at line 235 of file st.c.

References st_init_table_with_size().

st_table* st_init_strtable ( void  )
st_table* st_init_strtable_with_size ( st_index_t  size)

Definition at line 223 of file st.c.

References st_init_table_with_size().

st_table* st_init_table ( const struct st_hash_type type)

Definition at line 199 of file st.c.

References st_init_table_with_size().

Referenced by rb_hash_tbl(), st_init_numtable(), st_init_strcasetable(), and st_init_strtable().

st_table* st_init_table_with_size ( const struct st_hash_type type,
st_index_t  size 
)
int st_insert ( register st_table table,
register st_data_t  key,
st_data_t  value 
)
int st_insert2 ( register st_table table,
register st_data_t  key,
st_data_t  value,
st_data_t(*)(st_data_t func 
)
int st_lookup ( st_table table,
register st_data_t  key,
st_data_t value 
)
size_t st_memsize ( const st_table table)
int st_numcmp ( st_data_t  x,
st_data_t  y 
)

Definition at line 1330 of file st.c.

st_index_t st_numhash ( st_data_t  n)

Definition at line 1336 of file st.c.

int st_strcasecmp ( const char *  s1,
const char *  s2 
)

Definition at line 1261 of file st.c.

int st_strncasecmp ( const char *  s1,
const char *  s2,
size_t  n 
)

Definition at line 1285 of file st.c.

static st_index_t strcasehash ( st_data_t  arg) [static]

Definition at line 1310 of file st.c.

References FNV1_32A_INIT, and FNV_32_PRIME.

static st_index_t strhash ( st_data_t  arg) [static]

Definition at line 1253 of file st.c.

References FNV1_32A_INIT, st_hash(), and strlen().

static void unpack_entries ( register st_table table) [static]

Variable Documentation

const unsigned int primes[] [static]

Definition at line 87 of file st.c.

Referenced by new_size().

struct st_hash_type type_numhash [static]
Initial value:

Definition at line 41 of file st.c.

struct st_hash_type type_strcasehash [static]
Initial value:

Definition at line 54 of file st.c.

struct st_hash_type type_strhash [static]
Initial value:
 {
    strcmp,
    strhash,
}

Definition at line 48 of file st.c.