Feature #5789 » st_pool_alloc.patch
common.mk | ||
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$(VM_CORE_H_INCLUDES) {$(VPATH)}debug.h
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sprintf.$(OBJEXT): {$(VPATH)}sprintf.c $(RUBY_H_INCLUDES) {$(VPATH)}re.h \
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{$(VPATH)}regex.h {$(VPATH)}vsnprintf.c $(ENCODING_H_INCLUDES)
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st.$(OBJEXT): {$(VPATH)}st.c $(RUBY_H_INCLUDES)
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st.$(OBJEXT): {$(VPATH)}st.c $(RUBY_H_INCLUDES) {$(VPATH)}pool_alloc.inc.h
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strftime.$(OBJEXT): {$(VPATH)}strftime.c $(RUBY_H_INCLUDES) \
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{$(VPATH)}timev.h
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string.$(OBJEXT): {$(VPATH)}string.c $(RUBY_H_INCLUDES) {$(VPATH)}re.h \
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pool_alloc.inc.h | ||
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/*
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* this is generic pool allocator
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* you should define following macroses:
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* ITEM_NAME - unique identifier, which allows to hold functions in a namespace
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* ITEM_TYPEDEF(name) - passed to typedef to localize item type
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* free_entry - desired name of function for free entry
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* alloc_entry - defired name of function for allocate entry
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*/
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#define NAME_(prefix, kind) sta_##prefix##_##kind
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#define NAME(prefix, kind) NAME_(prefix, kind)
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#define holder_typename NAME(holder, ITEM_NAME)
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#define entry_typename NAME(entry, ITEM_NAME)
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#define list_typename NAME(list, ITEM_NAME)
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#define union_typename NAME(union, ITEM_NAME)
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#define item_type NAME(item, ITEM_NAME)
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typedef ITEM_TYPEDEF(item_type);
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typedef struct holder_typename holder_typename;
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typedef struct entry_typename entry_typename;
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typedef struct list_typename {
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entry_typename *fore, *back;
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} list_typename;
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typedef union union_typename {
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list_typename l;
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item_type item;
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} union_typename;
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struct entry_typename {
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union_typename p;
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holder_typename *holder;
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};
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#define HOLDER_SIZE (4096 / sizeof(entry_typename) - 1)
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struct holder_typename {
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unsigned int free;
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entry_typename items[HOLDER_SIZE];
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};
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#define free_entry_p NAME(free_pointer, ITEM_NAME)
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#define free_entry_count NAME(count, ITEM_NAME)
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static entry_typename *free_entry_p = NULL;
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static unsigned long free_entry_count = 0;
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#define entry_chain NAME(chain, ITEM_NAME)
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#define holder_alloc NAME(holder_alloc, ITEM_NAME)
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#define holder_free NAME(holder_free, ITEM_NAME)
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#define fore p.l.fore
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#define back p.l.back
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static inline void
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entry_chain(entry_typename *entry)
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{
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entry->fore = free_entry_p;
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entry->back = NULL;
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if (free_entry_p) {
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free_entry_p->back = entry;
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}
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free_entry_p = entry;
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}
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static void
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holder_alloc()
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{
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holder_typename *holder = alloc(holder_typename);
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unsigned int i = HOLDER_SIZE - 1;
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register entry_typename *ptr = holder->items;
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holder->free = HOLDER_SIZE;
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for(; i; ptr++, i-- ) {
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ptr->holder = holder;
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ptr->fore = ptr + 1;
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(ptr + 1)->back = ptr;
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}
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holder->items[0].back = NULL;
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holder->items[HOLDER_SIZE - 1].holder = holder;
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holder->items[HOLDER_SIZE - 1].fore = free_entry_p;
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free_entry_p = &holder->items[0];
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free_entry_count+= HOLDER_SIZE;
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}
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static void
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holder_free(holder_typename *holder)
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{
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unsigned int i;
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entry_typename *ptr;
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for(i = 0; i < HOLDER_SIZE; i++) {
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ptr = &holder->items[i];
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if (ptr->fore) {
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ptr->fore->back = ptr->back;
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}
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if (ptr->back) {
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ptr->back->fore = ptr->fore;
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} else {
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free_entry_p = ptr->fore;
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}
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}
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free_entry_count-= HOLDER_SIZE;
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free(holder);
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}
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static void
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free_entry(item_type *entry)
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{
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holder_typename *holder = ((entry_typename *)entry)->holder;
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entry_chain((entry_typename *)entry);
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holder->free++;
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free_entry_count++;
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if (holder->free == HOLDER_SIZE && free_entry_count > HOLDER_SIZE) {
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holder_free(holder);
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}
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}
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static item_type *
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alloc_entry()
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{
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entry_typename *result;
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if (!free_entry_p) {
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holder_alloc();
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}
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result = free_entry_p;
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free_entry_p = result->fore;
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result->holder->free--;
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free_entry_count--;
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return (item_type *)result;
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}
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#undef NAME_
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#undef NAME
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#undef holder_typename
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#undef entry_typename
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#undef list_typename
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#undef union_typename
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#undef item_type
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#undef free_entry_p
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#undef free_entry_count
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#undef HOLDER_SIZE
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#undef entry_chain
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#undef holder_alloc
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#undef holdef_free
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#undef fore
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#undef back
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st.c | ||
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st_table_entry *fore, *back;
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};
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#define ST_DEFAULT_MAX_DENSITY 5
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#define ST_DEFAULT_MAX_DENSITY 3
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#define ST_DEFAULT_INIT_TABLE_SIZE 11
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/*
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... | ... | |
#define do_hash(key,table) (unsigned int)(st_index_t)(*(table)->type->hash)((key))
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#define do_hash_bin(key,table) (do_hash((key), (table))%(table)->num_bins)
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#define ST_USE_POOLED_ALLOCATOR
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#ifdef ST_USE_POOLED_ALLOCATOR
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#define ITEM_NAME entry
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#define ITEM_TYPEDEF(name) st_table_entry name
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#define free_entry st_free_entry
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#define alloc_entry st_alloc_entry
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#include "pool_alloc.inc.h"
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#undef ITEM_NAME
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#undef ITEM_TYPEDEF
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#undef free_entry
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#undef alloc_entry
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#define ITEM_NAME bins11
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typedef st_table_entry *st_table_entry_p;
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#define ITEM_TYPEDEF(name) st_table_entry_p name[ST_DEFAULT_INIT_TABLE_SIZE]
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#define free_entry st_free_bins11
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#define alloc_entry st_alloc_bins11
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#include "pool_alloc.inc.h"
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#undef ITEM_NAME
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#undef ITEM_TYPEDEF
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#undef free_entry
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#undef alloc_entry
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#define ITEM_NAME table
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#define ITEM_TYPEDEF(name) st_table name
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#define free_entry st_dealloc_table
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#define alloc_entry st_alloc_table
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#include "pool_alloc.inc.h"
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#undef ITEM_NAME
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#undef ITEM_TYPEDEF
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#undef free_entry
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#undef alloc_entry
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static st_table_entry **
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st_alloc_bins(st_index_t num_bins)
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{
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st_table_entry **result;
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if (num_bins == ST_DEFAULT_INIT_TABLE_SIZE) {
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result = (st_table_entry **) st_alloc_bins11();
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}
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else {
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result = (st_table_entry **) malloc(num_bins * sizeof(st_table_entry *));
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}
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memset(result, 0, num_bins * sizeof(st_table_entry *));
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return result;
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}
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static void
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st_free_bins(st_table_entry **bins, st_index_t num_bins)
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{
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if (num_bins == ST_DEFAULT_INIT_TABLE_SIZE) {
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st_free_bins11(
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(st_table_entry_p (*)[ST_DEFAULT_INIT_TABLE_SIZE]) bins);
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} else {
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free(bins);
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}
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}
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#else
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#define st_alloc_entry() alloc(st_table_entry)
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#define st_free_entry(entry) free(entry)
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#define st_alloc_table() alloc(st_table)
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#define st_dealloc_table(table) free(table)
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#define st_alloc_bins(size) (st_table_entry **)Calloc(size, sizeof(st_table_entry *))
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#define st_free_bins(bins, size) free(bins)
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#endif
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/*
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* MINSIZE is the minimum size of a dictionary.
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*/
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... | ... | |
Table of prime numbers 2^n+a, 2<=n<=30.
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*/
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static const unsigned int primes[] = {
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8 + 3,
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ST_DEFAULT_INIT_TABLE_SIZE,
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16 + 3,
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32 + 5,
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64 + 3,
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... | ... | |
size = new_size(size); /* round up to prime number */
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tbl = alloc(st_table);
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tbl = st_alloc_table();
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tbl->type = type;
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tbl->num_entries = 0;
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tbl->entries_packed = type == &type_numhash && size/2 <= MAX_PACKED_NUMHASH;
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tbl->num_bins = size;
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tbl->bins = (st_table_entry **)Calloc(size, sizeof(st_table_entry*));
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tbl->bins = st_alloc_bins(size);
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tbl->head = 0;
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tbl->tail = 0;
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... | ... | |
table->bins[i] = 0;
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while (ptr != 0) {
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next = ptr->next;
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free(ptr);
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st_free_entry(ptr);
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ptr = next;
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}
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}
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... | ... | |
st_free_table(st_table *table)
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{
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st_clear(table);
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free(table->bins);
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free(table);
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st_free_bins(table->bins, table->num_bins);
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st_dealloc_table(table);
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}
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size_t
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... | ... | |
#define FOUND_ENTRY
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#endif
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#define FIND_ENTRY(table, ptr, hash_val, bin_pos) do {\
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(bin_pos) = (hash_val)%(table)->num_bins;\
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(ptr) = (table)->bins[(bin_pos)];\
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FOUND_ENTRY;\
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if (PTR_NOT_EQUAL((table), (ptr), (hash_val), key)) {\
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COLLISION;\
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while (PTR_NOT_EQUAL((table), (ptr)->next, (hash_val), key)) {\
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(ptr) = (ptr)->next;\
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}\
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(ptr) = (ptr)->next;\
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}\
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} while (0)
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static st_table_entry *
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find_entry(st_table *table, st_data_t key, st_index_t hash_val, st_index_t *bin_posp)
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{
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st_index_t bin_pos = hash_val % table->num_bins;
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register st_table_entry *ptr = table->bins[bin_pos];
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FOUND_ENTRY;
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if (PTR_NOT_EQUAL(table, ptr, hash_val, key)) {
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COLLISION;
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while (PTR_NOT_EQUAL(table, ptr->next, hash_val, key)) {
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ptr = ptr->next;
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}
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ptr = ptr->next;
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}
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if (bin_posp != NULL)
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*bin_posp = bin_pos;
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return ptr;
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}
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static inline st_index_t
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find_packed_index(st_table *table, st_data_t key)
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{
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st_index_t i = 0;
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while (i < table->num_entries && (st_data_t)table->bins[i*2] != key) i++;
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return i;
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}
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#define collision_check 0
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int
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st_lookup(st_table *table, register st_data_t key, st_data_t *value)
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{
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st_index_t hash_val, bin_pos;
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register st_table_entry *ptr;
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if (table->entries_packed) {
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st_index_t i;
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for (i = 0; i < table->num_entries; i++) {
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if ((st_data_t)table->bins[i*2] == key) {
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if (value !=0) *value = (st_data_t)table->bins[i*2+1];
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return 1;
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}
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}
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st_index_t i = find_packed_index(table, key);
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if (i < table->num_entries) {
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if (value != 0) *value = (st_data_t)table->bins[i*2+1];
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return 1;
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}
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return 0;
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}
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hash_val = do_hash(key, table);
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FIND_ENTRY(table, ptr, hash_val, bin_pos);
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ptr = find_entry(table, key, do_hash(key, table), NULL);
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if (ptr == 0) {
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return 0;
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... | ... | |
int
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st_get_key(st_table *table, register st_data_t key, st_data_t *result)
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{
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st_index_t hash_val, bin_pos;
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register st_table_entry *ptr;
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if (table->entries_packed) {
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st_index_t i;
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for (i = 0; i < table->num_entries; i++) {
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if ((st_data_t)table->bins[i*2] == key) {
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if (result !=0) *result = (st_data_t)table->bins[i*2];
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return 1;
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}
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}
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st_index_t i = find_packed_index(table, key);
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if (i < table->num_entries) {
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if (result != 0) *result = (st_data_t)table->bins[i*2];
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return 1;
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}
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return 0;
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}
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hash_val = do_hash(key, table);
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FIND_ENTRY(table, ptr, hash_val, bin_pos);
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ptr = find_entry(table, key, do_hash(key, table), NULL);
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if (ptr == 0) {
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return 0;
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... | ... | |
((st_index_t)((table)->num_entries+1) * 2 <= (table)->num_bins && \
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(table)->num_entries+1 <= MAX_PACKED_NUMHASH)
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#define ADD_DIRECT(table, key, value, hash_val, bin_pos)\
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do {\
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st_table_entry *entry;\
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if ((table)->num_entries > ST_DEFAULT_MAX_DENSITY * (table)->num_bins) {\
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rehash(table);\
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(bin_pos) = (hash_val) % (table)->num_bins;\
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}\
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\
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entry = alloc(st_table_entry);\
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\
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entry->hash = (hash_val);\
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entry->key = (key);\
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entry->record = (value);\
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entry->next = (table)->bins[(bin_pos)];\
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if ((table)->head != 0) {\
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entry->fore = 0;\
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(entry->back = (table)->tail)->fore = entry;\
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(table)->tail = entry;\
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}\
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else {\
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(table)->head = (table)->tail = entry;\
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entry->fore = entry->back = 0;\
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}\
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(table)->bins[(bin_pos)] = entry;\
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(table)->num_entries++;\
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} while (0)
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static void
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add_direct(st_table * table, st_data_t key, st_data_t value,
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st_index_t hash_val, st_index_t bin_pos)
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{
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st_table_entry *entry;
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if (table->num_entries > ST_DEFAULT_MAX_DENSITY * table->num_bins) {
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rehash(table);
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bin_pos = hash_val % table->num_bins;
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}
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entry = st_alloc_entry();
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entry->hash = hash_val;
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entry->key = key;
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entry->record = value;
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entry->next = table->bins[bin_pos];
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if (table->head != 0) {
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entry->fore = 0;
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(entry->back = table->tail)->fore = entry;
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table->tail = entry;
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}
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else {
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table->head = table->tail = entry;
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entry->fore = entry->back = 0;
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}
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table->bins[bin_pos] = entry;
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table->num_entries++;
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}
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static void
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unpack_entries(register st_table *table)
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... | ... | |
*table = tmp_table;
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}
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static int
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add_packed_direct(st_table *table, st_data_t key, st_data_t value)
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{
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int res = 1;
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if (MORE_PACKABLE_P(table)) {
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st_index_t i = table->num_entries++;
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table->bins[i*2] = (struct st_table_entry*)key;
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table->bins[i*2+1] = (struct st_table_entry*)value;
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}
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else {
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unpack_entries(table);
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res = 0;
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}
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return res;
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}
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int
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st_insert(register st_table *table, register st_data_t key, st_data_t value)
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{
|
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... | ... | |
register st_table_entry *ptr;
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if (table->entries_packed) {
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st_index_t i;
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for (i = 0; i < table->num_entries; i++) {
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if ((st_data_t)table->bins[i*2] == key) {
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table->bins[i*2+1] = (struct st_table_entry*)value;
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return 1;
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}
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}
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if (MORE_PACKABLE_P(table)) {
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i = table->num_entries++;
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table->bins[i*2] = (struct st_table_entry*)key;
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table->bins[i*2+1] = (struct st_table_entry*)value;
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return 0;
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}
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else {
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unpack_entries(table);
|
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st_index_t i = find_packed_index(table, key);
|
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if (i < table->num_entries) {
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table->bins[i*2+1] = (struct st_table_entry*)value;
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return 1;
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}
|
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if (add_packed_direct(table, key, value)) {
|
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return 0;
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}
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}
|
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hash_val = do_hash(key, table);
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FIND_ENTRY(table, ptr, hash_val, bin_pos);
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ptr = find_entry(table, key, hash_val, &bin_pos);
|
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if (ptr == 0) {
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ADD_DIRECT(table, key, value, hash_val, bin_pos);
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add_direct(table, key, value, hash_val, bin_pos);
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return 0;
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}
|
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else {
|
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... | ... | |
register st_table_entry *ptr;
|
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if (table->entries_packed) {
|
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st_index_t i;
|
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for (i = 0; i < table->num_entries; i++) {
|
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if ((st_data_t)table->bins[i*2] == key) {
|
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table->bins[i*2+1] = (struct st_table_entry*)value;
|
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return 1;
|
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}
|
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}
|
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if (MORE_PACKABLE_P(table)) {
|
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i = table->num_entries++;
|
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table->bins[i*2] = (struct st_table_entry*)key;
|
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table->bins[i*2+1] = (struct st_table_entry*)value;
|
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return 0;
|
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}
|
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else {
|
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unpack_entries(table);
|
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st_index_t i = find_packed_index(table, key);
|
||
if (i < table->num_entries) {
|
||
table->bins[i*2+1] = (struct st_table_entry*)value;
|
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return 1;
|
||
}
|
||
if (add_packed_direct(table, key, value)) {
|
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return 0;
|
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}
|
||
}
|
||
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
|
||
... | ... | |
st_index_t i, new_num_bins, hash_val;
|
||
new_num_bins = new_size(table->num_bins+1);
|
||
new_bins = (st_table_entry**)
|
||
xrealloc(table->bins, new_num_bins * sizeof(st_table_entry*));
|
||
for (i = 0; i < new_num_bins; ++i) new_bins[i] = 0;
|
||
st_free_bins(table->bins, table->num_bins);
|
||
new_bins = st_alloc_bins(new_num_bins);
|
||
table->num_bins = new_num_bins;
|
||
table->bins = new_bins;
|
||
... | ... | |
st_index_t num_bins = old_table->num_bins;
|
||
st_index_t hash_val;
|
||
new_table = alloc(st_table);
|
||
new_table = st_alloc_table();
|
||
if (new_table == 0) {
|
||
return 0;
|
||
}
|
||
*new_table = *old_table;
|
||
new_table->bins = (st_table_entry**)
|
||
Calloc((unsigned)num_bins, sizeof(st_table_entry*));
|
||
new_table->bins = st_alloc_bins(num_bins);
|
||
if (new_table->bins == 0) {
|
||
free(new_table);
|
||
st_dealloc_table(new_table);
|
||
return 0;
|
||
}
|
||
... | ... | |
prev = 0;
|
||
tail = &new_table->head;
|
||
do {
|
||
entry = alloc(st_table_entry);
|
||
entry = st_alloc_entry();
|
||
if (entry == 0) {
|
||
st_free_table(new_table);
|
||
st_dealloc_table(new_table);
|
||
return 0;
|
||
}
|
||
*entry = *ptr;
|
||
... | ... | |
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);
|
||
st_free_entry(ptr);
|
||
return 1;
|
||
}
|
||
}
|
||
... | ... | |
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->key == never) {
|
||
tmp = ptr;
|
||
*last = ptr = ptr->next;
|
||
free(tmp);
|
||
st_free_entry(tmp);
|
||
}
|
||
else {
|
||
ptr = *(last = &ptr->next);
|
||
... | ... | |
if (ptr == tmp) {
|
||
tmp = ptr->fore;
|
||
*last = ptr->next;
|
||
REMOVE_ENTRY(table, ptr);
|
||
free(ptr);
|
||
remove_entry(table, ptr);
|
||
st_free_entry(ptr);
|
||
if (ptr == tmp) return 0;
|
||
ptr = tmp;
|
||
break;
|
||
... | ... | |
if (ptr == tmp) {
|
||
tmp = ptr->back;
|
||
*last = ptr->next;
|
||
REMOVE_ENTRY(table, ptr);
|
||
remove_entry(table, ptr);
|
||
free(ptr);
|
||
ptr = tmp;
|
||
break;
|