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Feature #5789 » st_func.patch

rewrite some macroses to functions - funny_falcon (Yura Sokolov), 12/22/2011 06:34 PM

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st.c
Table of prime numbers 2^n+a, 2<=n<=30.
*/
static const unsigned int primes[] = {
8 + 3,
ST_DEFAULT_INIT_TABLE_SIZE,
16 + 3,
32 + 5,
64 + 3,
......
#define FOUND_ENTRY
#endif
#define FIND_ENTRY(table, ptr, hash_val, bin_pos) 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)
static st_table_entry *
find_entry(st_table *table, st_data_t key, st_index_t hash_val, st_index_t *bin_posp)
{
st_index_t bin_pos = hash_val % table->num_bins;
register st_table_entry *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;
}
if (bin_posp != NULL)
*bin_posp = bin_pos;
return ptr;
}
static inline st_index_t
find_packed_index(st_table *table, st_data_t key)
{
st_index_t i = 0;
while (i < table->num_entries && (st_data_t)table->bins[i*2] != key) i++;
return i;
}
#define collision_check 0
int
st_lookup(st_table *table, register st_data_t key, st_data_t *value)
{
st_index_t hash_val, bin_pos;
register st_table_entry *ptr;
if (table->entries_packed) {
st_index_t i;
for (i = 0; i < table->num_entries; i++) {
if ((st_data_t)table->bins[i*2] == key) {
if (value !=0) *value = (st_data_t)table->bins[i*2+1];
return 1;
}
}
st_index_t i = find_packed_index(table, key);
if (i < table->num_entries) {
if (value != 0) *value = (st_data_t)table->bins[i*2+1];
return 1;
}
return 0;
}
hash_val = do_hash(key, table);
FIND_ENTRY(table, ptr, hash_val, bin_pos);
ptr = find_entry(table, key, do_hash(key, table), NULL);
if (ptr == 0) {
return 0;
......
int
st_get_key(st_table *table, register st_data_t key, st_data_t *result)
{
st_index_t hash_val, bin_pos;
register st_table_entry *ptr;
if (table->entries_packed) {
st_index_t i;
for (i = 0; i < table->num_entries; i++) {
if ((st_data_t)table->bins[i*2] == key) {
if (result !=0) *result = (st_data_t)table->bins[i*2];
return 1;
}
}
st_index_t i = find_packed_index(table, key);
if (i < table->num_entries) {
if (result != 0) *result = (st_data_t)table->bins[i*2];
return 1;
}
return 0;
}
hash_val = do_hash(key, table);
FIND_ENTRY(table, ptr, hash_val, bin_pos);
ptr = find_entry(table, key, do_hash(key, table), NULL);
if (ptr == 0) {
return 0;
......
((st_index_t)((table)->num_entries+1) * 2 <= (table)->num_bins && \
(table)->num_entries+1 <= MAX_PACKED_NUMHASH)
#define ADD_DIRECT(table, key, value, hash_val, bin_pos)\
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)
static void
add_direct(st_table * table, st_data_t key, st_data_t value,
st_index_t hash_val, st_index_t bin_pos)
{
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++;
}
static void
unpack_entries(register st_table *table)
......
*table = tmp_table;
}
static int
add_packed_direct(st_table *table, st_data_t key, st_data_t value)
{
int res = 1;
if (MORE_PACKABLE_P(table)) {
st_index_t i = table->num_entries++;
table->bins[i*2] = (struct st_table_entry*)key;
table->bins[i*2+1] = (struct st_table_entry*)value;
}
else {
unpack_entries(table);
res = 0;
}
return res;
}
int
st_insert(register st_table *table, register st_data_t key, st_data_t value)
{
......
register st_table_entry *ptr;
if (table->entries_packed) {
st_index_t i;
for (i = 0; i < table->num_entries; i++) {
if ((st_data_t)table->bins[i*2] == key) {
table->bins[i*2+1] = (struct st_table_entry*)value;
return 1;
}
}
if (MORE_PACKABLE_P(table)) {
i = table->num_entries++;
table->bins[i*2] = (struct st_table_entry*)key;
table->bins[i*2+1] = (struct st_table_entry*)value;
return 0;
}
else {
unpack_entries(table);
st_index_t i = find_packed_index(table, key);
if (i < table->num_entries) {
table->bins[i*2+1] = (struct st_table_entry*)value;
return 1;
}
if (add_packed_direct(table, key, value)) {
return 0;
}
}
hash_val = do_hash(key, table);
FIND_ENTRY(table, ptr, hash_val, bin_pos);
ptr = find_entry(table, key, hash_val, &bin_pos);
if (ptr == 0) {
ADD_DIRECT(table, key, value, hash_val, bin_pos);
add_direct(table, key, value, hash_val, bin_pos);
return 0;
}
else {
......
register st_table_entry *ptr;
if (table->entries_packed) {
st_index_t i;
for (i = 0; i < table->num_entries; i++) {
if ((st_data_t)table->bins[i*2] == key) {
table->bins[i*2+1] = (struct st_table_entry*)value;
return 1;
}
}
if (MORE_PACKABLE_P(table)) {
i = table->num_entries++;
table->bins[i*2] = (struct st_table_entry*)key;
table->bins[i*2+1] = (struct st_table_entry*)value;
return 0;
}
else {
unpack_entries(table);
st_index_t i = find_packed_index(table, key);
if (i < table->num_entries) {
table->bins[i*2+1] = (struct st_table_entry*)value;
return 1;
}
if (add_packed_direct(table, key, value)) {
return 0;
}
}
hash_val = do_hash(key, table);
FIND_ENTRY(table, ptr, hash_val, bin_pos);
ptr = find_entry(table, key, hash_val, &bin_pos);
if (ptr == 0) {
key = (*func)(key);
ADD_DIRECT(table, key, value, hash_val, bin_pos);
add_direct(table, key, value, hash_val, bin_pos);
return 0;
}
else {
......
st_index_t hash_val, bin_pos;
if (table->entries_packed) {
int i;
if (MORE_PACKABLE_P(table)) {
i = table->num_entries++;
table->bins[i*2] = (struct st_table_entry*)key;
table->bins[i*2+1] = (struct st_table_entry*)value;
return;
}
else {
unpack_entries(table);
}
if (add_packed_direct(table, key, value)) {
return;
}
}
hash_val = do_hash(key, table);
bin_pos = hash_val % table->num_bins;
ADD_DIRECT(table, key, value, hash_val, bin_pos);
add_direct(table, key, value, hash_val, bin_pos);
}
static void
......
return new_table;
}
#define REMOVE_ENTRY(table, ptr) 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)
static inline void
remove_entry(st_table *table, st_table_entry *ptr)
{
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--;
}
int
st_delete(register st_table *table, register st_data_t *key, st_data_t *value)
......
register st_table_entry *ptr;
if (table->entries_packed) {
st_index_t i;
for (i = 0; i < table->num_entries; i++) {
if ((st_data_t)table->bins[i*2] == *key) {
if (value != 0) *value = (st_data_t)table->bins[i*2+1];
table->num_entries--;
memmove(&table->bins[i*2], &table->bins[(i+1)*2],
sizeof(struct st_table_entry*) * 2*(table->num_entries-i));
return 1;
}
st_index_t i = find_packed_index(table, *key);
if (i < table->num_entries) {
if (value != 0) *value = (st_data_t)table->bins[i*2+1];
table->num_entries--;
memmove(&table->bins[i*2], &table->bins[(i+1)*2],
sizeof(struct st_table_entry*) * 2*(table->num_entries-i));
return 1;
}
if (value != 0) *value = 0;
return 0;
......
for (prev = &table->bins[hash_val]; (ptr = *prev) != 0; prev = &ptr->next) {
if (EQUAL(table, *key, ptr->key)) {
*prev = ptr->next;
REMOVE_ENTRY(table, ptr);
remove_entry(table, ptr);
if (value != 0) *value = ptr->record;
*key = ptr->key;
free(ptr);
......
register st_table_entry *ptr;
if (table->entries_packed) {
st_index_t i;
for (i = 0; i < table->num_entries; i++) {
if ((st_data_t)table->bins[i*2] == *key) {
if (value != 0) *value = (st_data_t)table->bins[i*2+1];
table->bins[i*2] = (void *)never;
return 1;
}
st_index_t i = find_packed_index(table, *key);
if (i < table->num_entries) {
if (value != 0) *value = (st_data_t)table->bins[i*2+1];
table->bins[i*2] = (void *)never;
return 1;
}
if (value != 0) *value = 0;
return 0;
......
for (; ptr != 0; ptr = ptr->next) {
if ((ptr->key != never) && EQUAL(table, ptr->key, *key)) {
REMOVE_ENTRY(table, ptr);
remove_entry(table, ptr);
*key = ptr->key;
if (value != 0) *value = ptr->record;
ptr->key = ptr->record = never;
......
if (ptr == tmp) {
tmp = ptr->fore;
*last = ptr->next;
REMOVE_ENTRY(table, ptr);
remove_entry(table, ptr);
free(ptr);
if (ptr == tmp) return 0;
ptr = tmp;
......
if (ptr == tmp) {
tmp = ptr->back;
*last = ptr->next;
REMOVE_ENTRY(table, ptr);
remove_entry(table, ptr);
free(ptr);
ptr = tmp;
break;
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