coturn/src/server/ns_turn_maps.c
2015-08-13 00:03:29 -07:00

1204 lines
25 KiB
C

/*
* Copyright (C) 2011, 2012, 2013 Citrix Systems
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "ns_turn_maps.h"
#include "ns_turn_ioalib.h"
#include "ns_turn_khash.h"
KHASH_MAP_INIT_INT64(3, ur_map_value_type)
#define MAGIC_HASH ((u64bits)(0x90ABCDEFL))
struct _ur_map {
khash_t(3) *h;
u64bits magic;
TURN_MUTEX_DECLARE(mutex)
};
static int ur_map_init(ur_map* map) {
if(map) {
map->h=kh_init(3);
if(map->h) {
map->magic=MAGIC_HASH;
TURN_MUTEX_INIT_RECURSIVE(&(map->mutex));
return 0;
}
}
return -1;
}
#define ur_map_valid(map) ((map) && ((map)->h) && ((map)->magic==MAGIC_HASH))
ur_map* ur_map_create() {
ur_map *map=(ur_map*)turn_malloc(sizeof(ur_map));
if(ur_map_init(map)<0) {
turn_free(map,sizeof(ur_map));
return NULL;
}
return map;
}
/**
* @ret:
* 0 - success
* -1 - error
*/
int ur_map_put(ur_map* map, ur_map_key_type key, ur_map_value_type value) {
if(!ur_map_valid(map)) return -1;
else {
int ret=0;
khiter_t k;
k = kh_get(3, map->h, key);
if(k != kh_end(map->h)) {
kh_del(3, map->h, k);
}
k = kh_put(3,map->h,key,&ret);
if (!ret) {
kh_del(3, map->h, k);
return -1;
}
kh_value(map->h, k) = value;
return 0;
}
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
int ur_map_get(const ur_map* map, ur_map_key_type key, ur_map_value_type *value) {
if(!ur_map_valid(map)) return 0;
else {
khiter_t k;
k = kh_get(3, map->h, key);
if((k != kh_end(map->h)) && kh_exist(map->h,k)) {
if(value) *value=kh_value(map->h,k);
return 1;
}
return 0;
}
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
int ur_map_del(ur_map* map, ur_map_key_type key,ur_map_del_func delfunc) {
if(!ur_map_valid(map)) return 0;
else {
khiter_t k;
k = kh_get(3, map->h, key);
if((k != kh_end(map->h)) && kh_exist(map->h,k)) {
if(delfunc) {
delfunc(kh_value(map->h,k));
}
kh_del(3,map->h,k);
return 1;
}
return 0;
}
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
int ur_map_exist(const ur_map* map, ur_map_key_type key) {
if(!ur_map_valid(map)) return 0;
else {
khiter_t k;
k = kh_get(3, map->h, key);
if((k != kh_end(map->h)) && kh_exist(map->h,k)) {
return 1;
}
return 0;
}
}
void ur_map_free(ur_map** map) {
if(map && ur_map_valid(*map)) {
{
static int khctest=0;
if(khctest)
kh_clear(3,(*map)->h);
}
kh_destroy(3,(*map)->h);
(*map)->h=NULL;
(*map)->magic=0;
TURN_MUTEX_DESTROY(&((*map)->mutex));
turn_free(*map,sizeof(ur_map));
*map=NULL;
}
}
size_t ur_map_size(const ur_map* map) {
if(ur_map_valid(map)) {
return kh_size(map->h);
} else {
return 0;
}
}
int ur_map_foreach(ur_map* map, foreachcb_type func) {
if(map && func && ur_map_valid(map)) {
khiter_t k;
for (k = kh_begin((*map)->h); k != kh_end(map->h); ++k) {
if (kh_exist(map->h, k)) {
if(func((ur_map_key_type)(kh_key(map->h, k)),
(ur_map_value_type)(kh_value(map->h, k)))) {
return 1;
}
}
}
}
return 0;
}
int ur_map_foreach_arg(ur_map* map, foreachcb_arg_type func, void* arg) {
if(map && func && ur_map_valid(map)) {
khiter_t k;
for (k = kh_begin((*map)->h); k != kh_end(map->h); ++k) {
if (kh_exist(map->h, k)) {
if(func((ur_map_key_type)(kh_key(map->h, k)),
(ur_map_value_type)(kh_value(map->h, k)),
arg)
) {
return 1;
}
}
}
}
return 0;
}
int ur_map_lock(const ur_map* map) {
if(ur_map_valid(map)) {
TURN_MUTEX_LOCK((const turn_mutex*)&(map->mutex));
return 0;
}
return -1;
}
int ur_map_unlock(const ur_map* map) {
if(ur_map_valid(map)) {
TURN_MUTEX_UNLOCK((const turn_mutex*)&(map->mutex));
return 0;
}
return -1;
}
//////////////////// LOCAL MAPS ////////////////////////////////////
void lm_map_init(lm_map *map)
{
if(map) {
ns_bzero(map,sizeof(lm_map));
}
}
/**
* @ret:
* 0 - success
* -1 - error
*/
int lm_map_put(lm_map* map, ur_map_key_type key, ur_map_value_type value)
{
int ret = -1;
if(map && key && value) {
size_t index = (size_t)(key & (LM_MAP_HASH_SIZE - 1));
lm_map_array *a = &(map->table[index]);
size_t i;
for(i=0;i<LM_MAP_ARRAY_SIZE;++i) {
ur_map_key_type key0 = a->main_keys[i];
ur_map_value_type value0 = a->main_values[i];
if(key0 == key) {
if(value0 == value) {
return 0;
} else {
return -1;
}
}
if(!key0 || !value0) {
a->main_keys[i] = key;
a->main_values[i] = value;
return 0;
}
}
size_t esz = a->extra_sz;
if(esz && a->extra_keys && a->extra_values) {
for(i=0;i<esz;++i) {
ur_map_key_type *keyp = a->extra_keys[i];
ur_map_value_type *valuep = a->extra_values[i];
if(keyp && valuep) {
if(!(*keyp) || !(*valuep)) {
*keyp = key;
*valuep = value;
return 0;
}
} else {
if(!(*keyp)) {
a->extra_keys[i] = (ur_map_key_type*)turn_malloc(sizeof(ur_map_key_type));
keyp = a->extra_keys[i];
}
if(!(*valuep)) {
a->extra_values[i] = (ur_map_value_type*)turn_malloc(sizeof(ur_map_value_type));
valuep = a->extra_values[i];
}
*keyp = key;
*valuep = value;
return 0;
}
}
}
size_t old_sz = esz;
size_t old_sz_mem = esz * sizeof(ur_map_key_type*);
a->extra_keys = (ur_map_key_type**)turn_realloc(a->extra_keys,old_sz_mem,old_sz_mem + sizeof(ur_map_key_type*));
a->extra_keys[old_sz] = (ur_map_key_type*)turn_malloc(sizeof(ur_map_key_type));
*(a->extra_keys[old_sz]) = key;
old_sz_mem = esz * sizeof(ur_map_value_type*);
a->extra_values = (ur_map_value_type**)turn_realloc(a->extra_values,old_sz_mem,old_sz_mem + sizeof(ur_map_value_type*));
a->extra_values[old_sz] = (ur_map_value_type*)turn_malloc(sizeof(ur_map_value_type));
*(a->extra_values[old_sz]) = value;
a->extra_sz += 1;
return 0;
}
return ret;
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
int lm_map_get(const lm_map* map, ur_map_key_type key, ur_map_value_type *value)
{
int ret = 0;
if(map && key) {
size_t index = (size_t)(key & (LM_MAP_HASH_SIZE - 1));
const lm_map_array *a = &(map->table[index]);
size_t i;
for(i=0;i<LM_MAP_ARRAY_SIZE;++i) {
ur_map_key_type key0 = a->main_keys[i];
if((key0 == key) && a->main_values[i]) {
if(value) {
*value = a->main_values[i];
}
return 1;
}
}
size_t esz = a->extra_sz;
if(esz && a->extra_keys && a->extra_values) {
for(i=0;i<esz;++i) {
ur_map_key_type *keyp = a->extra_keys[i];
ur_map_value_type *valuep = a->extra_values[i];
if(keyp && valuep) {
if(*keyp == key) {
if(value)
*value = *valuep;
return 1;
}
}
}
}
}
return ret;
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
int lm_map_del(lm_map* map, ur_map_key_type key,ur_map_del_func delfunc)
{
int ret = 0;
if(map && key) {
size_t index = (size_t)(key & (LM_MAP_HASH_SIZE - 1));
lm_map_array *a = &(map->table[index]);
size_t i;
for(i=0;i<LM_MAP_ARRAY_SIZE;++i) {
ur_map_key_type key0 = a->main_keys[i];
if((key0 == key) && a->main_values[i]) {
if(delfunc) {
delfunc(a->main_values[i]);
}
a->main_keys[i] = 0;
a->main_values[i] = 0;
return 1;
}
}
size_t esz = a->extra_sz;
if(esz && a->extra_keys && a->extra_values) {
for(i=0;i<esz;++i) {
ur_map_key_type *keyp = a->extra_keys[i];
ur_map_value_type *valuep = a->extra_values[i];
if(keyp && valuep) {
if(*keyp == key) {
if(delfunc)
delfunc(*valuep);
*keyp = 0;
*valuep = 0;
return 1;
}
}
}
}
}
return ret;
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
int lm_map_exist(const lm_map* map, ur_map_key_type key)
{
return lm_map_get(map, key, NULL);
}
void lm_map_clean(lm_map* map)
{
size_t j;
for(j=0;j<LM_MAP_HASH_SIZE;++j) {
lm_map_array *a = &(map->table[j]);
size_t esz = a->extra_sz;
if(esz) {
size_t i;
if(a->extra_keys) {
for(i=0;i<esz;++i) {
ur_map_key_type *keyp = a->extra_keys[i];
if(keyp) {
*keyp = 0;
turn_free(keyp,sizeof(ur_map_key_type));
}
}
turn_free(a->extra_keys,esz * sizeof(ur_map_key_type));
a->extra_keys = NULL;
}
if(a->extra_values) {
for(i=0;i<esz;++i) {
ur_map_value_type *valuep = a->extra_values[i];
if(valuep) {
*valuep = 0;
turn_free(valuep,sizeof(ur_map_value_type));
}
}
turn_free(a->extra_values,esz * sizeof(ur_map_value_type));
a->extra_values = NULL;
}
}
}
lm_map_init(map);
}
size_t lm_map_size(const lm_map* map)
{
size_t ret = 0;
if(map) {
size_t i;
for(i=0;i<LM_MAP_HASH_SIZE;++i) {
const lm_map_array *a = &(map->table[i]);
size_t j;
for(j=0;j<LM_MAP_ARRAY_SIZE;++j) {
if(a->main_keys[j] && a->main_values[j]) {
++ret;
}
}
size_t esz = a->extra_sz;
if(esz && a->extra_values && a->extra_keys) {
for(j=0;j<esz;++j) {
if(*(a->extra_keys[j]) && *(a->extra_values[j])) {
++ret;
}
}
}
}
}
return ret;
}
int lm_map_foreach(lm_map* map, foreachcb_type func)
{
size_t ret = 0;
if(map) {
size_t i;
for(i=0;i<LM_MAP_HASH_SIZE;++i) {
lm_map_array *a = &(map->table[i]);
size_t j;
for(j=0;j<LM_MAP_ARRAY_SIZE;++j) {
if(a->main_keys[j] && a->main_values[j]) {
if(func((ur_map_key_type)a->main_keys[j],
(ur_map_value_type)a->main_values[j])) {
return 1;
}
}
}
size_t esz = a->extra_sz;
if(esz && a->extra_values && a->extra_keys) {
for(j=0;j<esz;++j) {
if(*(a->extra_keys[j]) && *(a->extra_values[j])) {
if(func((ur_map_key_type)*(a->extra_keys[j]),
(ur_map_value_type)*(a->extra_values[j]))) {
return 1;
}
}
}
}
}
}
return ret;
}
int lm_map_foreach_arg(lm_map* map, foreachcb_arg_type func, void* arg)
{
size_t ret = 0;
if(map) {
size_t i;
for(i=0;i<LM_MAP_HASH_SIZE;++i) {
lm_map_array *a = &(map->table[i]);
size_t j;
for(j=0;j<LM_MAP_ARRAY_SIZE;++j) {
if(a->main_keys[j] && a->main_values[j]) {
if(func((ur_map_key_type)a->main_keys[j],
(ur_map_value_type)a->main_values[j],
arg)) {
return 1;
}
}
}
size_t esz = a->extra_sz;
if(esz && a->extra_values && a->extra_keys) {
for(j=0;j<esz;++j) {
if(*(a->extra_keys[j]) && *(a->extra_values[j])) {
if(func((ur_map_key_type)*(a->extra_keys[j]),
(ur_map_value_type)*(a->extra_values[j]),
arg)) {
return 1;
}
}
}
}
}
}
return ret;
}
//////////////////// ADDR LISTS ///////////////////////////////////
static void addr_list_free(addr_list_header* slh) {
if(slh) {
if(slh->extra_list) {
turn_free(slh->extra_list,sizeof(addr_elem)*(slh->extra_sz));
}
ns_bzero(slh,sizeof(addr_list_header));
}
}
static void addr_list_add(addr_list_header* slh, const ioa_addr* key, ur_addr_map_value_type value) {
if(!key || !value) return;
addr_elem *elem = NULL;
size_t i;
for(i=0;i<ADDR_ARRAY_SIZE;++i) {
if(!(slh->main_list[i].value)) {
elem = &(slh->main_list[i]);
break;
}
}
if(!elem && slh->extra_list) {
for(i=0;i<slh->extra_sz;++i) {
if(!(slh->extra_list[i].value)) {
elem = &(slh->extra_list[i]);
break;
}
}
}
if(!elem) {
size_t old_sz = slh->extra_sz;
size_t old_sz_mem = old_sz * sizeof(addr_elem);
slh->extra_list = (addr_elem*)turn_realloc(slh->extra_list, old_sz_mem, old_sz_mem + sizeof(addr_elem));
elem = &(slh->extra_list[old_sz]);
slh->extra_sz += 1;
}
addr_cpy(&(elem->key),key);
elem->value=value;
}
static void addr_list_remove(addr_list_header* slh, const ioa_addr* key,
ur_addr_map_func delfunc, int *counter) {
if(!slh || !key) return;
if(counter)
*counter = 0;
size_t i;
for(i=0;i<ADDR_ARRAY_SIZE;++i) {
addr_elem *elem=&(slh->main_list[i]);
if(elem->value) {
if(addr_eq(&(elem->key),key)) {
if(delfunc && elem->value)
delfunc(elem->value);
elem->value = 0;
if(counter) {
*counter += 1;
}
}
}
}
if(slh->extra_list) {
for(i=0;i<slh->extra_sz;++i) {
addr_elem *elem=&(slh->extra_list[i]);
if(elem->value) {
if(addr_eq(&(elem->key),key)) {
if(delfunc && elem->value)
delfunc(elem->value);
elem->value = 0;
if(counter) {
*counter += 1;
}
}
}
}
}
}
static void addr_list_foreach(addr_list_header* slh, ur_addr_map_func func) {
if(slh && func) {
size_t i;
for(i=0;i<ADDR_ARRAY_SIZE;++i) {
addr_elem *elem=&(slh->main_list[i]);
if(elem->value) {
func(elem->value);
}
}
if(slh->extra_list) {
for(i=0;i<slh->extra_sz;++i) {
addr_elem *elem=&(slh->extra_list[i]);
if(elem->value) {
func(elem->value);
}
}
}
}
}
static size_t addr_list_num_elements(const addr_list_header* slh) {
size_t ret = 0;
if (slh) {
size_t i;
for (i = 0; i < ADDR_ARRAY_SIZE; ++i) {
const addr_elem *elem = &(slh->main_list[i]);
if (elem->value) {
++ret;
}
}
if (slh->extra_list) {
for (i = 0; i < slh->extra_sz; ++i) {
addr_elem *elem = &(slh->extra_list[i]);
if (elem->value) {
++ret;
}
}
}
}
return ret;
}
static size_t addr_list_size(const addr_list_header* slh) {
size_t ret = 0;
if (slh) {
ret += ADDR_ARRAY_SIZE;
ret += slh->extra_sz;
}
return ret;
}
static addr_elem* addr_list_get(addr_list_header* slh, const ioa_addr* key) {
if(!slh || !key) return NULL;
size_t i;
for(i=0;i<ADDR_ARRAY_SIZE;++i) {
addr_elem *elem=&(slh->main_list[i]);
if(elem->value) {
if(addr_eq(&(elem->key),key)) {
return elem;
}
}
}
if(slh->extra_list) {
for(i=0;i<slh->extra_sz;++i) {
addr_elem *elem=&(slh->extra_list[i]);
if(elem->value) {
if(addr_eq(&(elem->key),key)) {
return elem;
}
}
}
}
return NULL;
}
static const addr_elem* addr_list_get_const(const addr_list_header* slh, const ioa_addr* key) {
if(!slh || !key) return NULL;
size_t i;
for(i=0;i<ADDR_ARRAY_SIZE;++i) {
const addr_elem *elem=&(slh->main_list[i]);
if(elem->value) {
if(addr_eq(&(elem->key),key)) {
return elem;
}
}
}
if(slh->extra_list) {
for(i=0;i<slh->extra_sz;++i) {
const addr_elem *elem=&(slh->extra_list[i]);
if(elem->value) {
if(addr_eq(&(elem->key),key)) {
return elem;
}
}
}
}
return NULL;
}
////////// ADDR MAPS ////////////////////////////////////////////
#define addr_map_index(key) (addr_hash((key)) & (ADDR_MAP_SIZE - 1))
#define get_addr_list_header(map, key) (&((map)->lists[addr_map_index((key))]))
#define ur_addr_map_valid(map) ((map) && ((map)->magic==MAGIC_HASH))
void ur_addr_map_init(ur_addr_map* map) {
if(map) {
ns_bzero(map,sizeof(ur_addr_map));
map->magic=MAGIC_HASH;
}
}
void ur_addr_map_clean(ur_addr_map* map) {
if(map && ur_addr_map_valid(map)) {
u32bits i=0;
for(i=0;i<ADDR_MAP_SIZE;i++) {
addr_list_free(&(map->lists[i]));
}
ns_bzero(map,sizeof(ur_addr_map));
}
}
/**
* @ret:
* 0 - success
* -1 - error
* if the addr key exists, the value is updated.
*/
int ur_addr_map_put(ur_addr_map* map, ioa_addr* key, ur_addr_map_value_type value) {
if(!ur_addr_map_valid(map)) return -1;
else {
addr_list_header* slh = get_addr_list_header(map, key);
addr_elem* elem = addr_list_get(slh, key);
if(elem) {
elem->value=value;
} else {
addr_list_add(slh,key,value);
}
return 0;
}
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
int ur_addr_map_get(const ur_addr_map* map, ioa_addr* key, ur_addr_map_value_type *value) {
if(!ur_addr_map_valid(map)) return 0;
else {
const addr_list_header* slh = get_addr_list_header(map, key);
const addr_elem *elem = addr_list_get_const(slh, key);
if(elem) {
if(value) *value=elem->value;
return 1;
}
return 0;
}
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
int ur_addr_map_del(ur_addr_map* map, ioa_addr* key,ur_addr_map_func delfunc) {
if(!ur_addr_map_valid(map)) return 0;
else {
addr_list_header* slh = get_addr_list_header(map, key);
int counter=0;
addr_list_remove(slh, key, delfunc, &counter);
return (counter>0);
}
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
void ur_addr_map_foreach(ur_addr_map* map, ur_addr_map_func func) {
if(ur_addr_map_valid(map)) {
u32bits i=0;
for(i=0;i<ADDR_MAP_SIZE;i++) {
addr_list_header* slh = &(map->lists[i]);
addr_list_foreach(slh, func);
}
}
}
size_t ur_addr_map_num_elements(const ur_addr_map* map) {
size_t ret = 0;
if (ur_addr_map_valid(map)) {
u32bits i = 0;
for (i = 0; i < ADDR_MAP_SIZE; i++) {
const addr_list_header* slh = &(map->lists[i]);
ret += addr_list_num_elements(slh);
}
}
return ret;
}
size_t ur_addr_map_size(const ur_addr_map* map) {
size_t ret = 0;
if (ur_addr_map_valid(map)) {
u32bits i = 0;
for (i = 0; i < ADDR_MAP_SIZE; i++) {
const addr_list_header* slh = &(map->lists[i]);
ret += addr_list_size(slh);
}
}
return ret;
}
//////////////////// STRING LISTS ///////////////////////////////////
typedef struct _string_list {
struct _string_list* next;
} string_list;
typedef struct _string_elem {
string_list list;
ur_string_map_key_type key;
u32bits key_size;
ur_string_map_value_type value;
} string_elem;
typedef struct _string_list_header {
string_list *list;
} string_list_header;
static size_t string_list_size(const string_list *sl) {
if(!sl) return 0;
return 1+string_list_size(sl->next);
}
static void string_list_free(string_list_header* slh, ur_string_map_func del_value_func) {
if(slh) {
string_list* list=slh->list;
while(list) {
string_elem *elem=(string_elem*)list;
string_list* tail=elem->list.next;
if(elem->key) turn_free(elem->key,elem->key_size);
if(del_value_func && elem->value)
del_value_func(elem->value);
turn_free(elem,sizeof(string_elem));
list=tail;
}
slh->list=NULL;
}
}
static string_list* string_list_add(string_list* sl, const ur_string_map_key_type key, ur_string_map_value_type value) {
if(!key) return sl;
string_elem *elem=(string_elem*)turn_malloc(sizeof(string_elem));
elem->list.next=sl;
elem->key_size = strlen(key)+1;
elem->key=(s08bits*)turn_malloc(elem->key_size);
ns_bcopy(key,elem->key,elem->key_size);
elem->value=value;
return &(elem->list);
}
static string_list* string_list_remove(string_list* sl, const ur_string_map_key_type key,
ur_string_map_func del_value_func, int *counter) {
if(!sl || !key) return sl;
string_elem *elem=(string_elem*)sl;
string_list* tail=elem->list.next;
if(strcmp(elem->key,key)==0) {
turn_free(elem->key,elem->key_size);
if(del_value_func)
del_value_func(elem->value);
turn_free(elem,sizeof(string_elem));
if(counter) *counter+=1;
sl=string_list_remove(tail, key, del_value_func, counter);
} else {
elem->list.next=string_list_remove(tail,key,del_value_func,counter);
}
return sl;
}
static string_elem* string_list_get(string_list* sl, const ur_string_map_key_type key) {
if(!sl || !key) return NULL;
string_elem *elem=(string_elem*)sl;
if(strcmp(elem->key,key)==0) {
return elem;
} else {
return string_list_get(elem->list.next, key);
}
}
////////// STRING MAPS ////////////////////////////////////////////
#define STRING_MAP_SIZE (1024)
struct _ur_string_map {
string_list_header lists[STRING_MAP_SIZE];
u64bits magic;
ur_string_map_func del_value_func;
TURN_MUTEX_DECLARE(mutex)
};
static u32bits string_hash(const ur_string_map_key_type key) {
u08bits *str=(u08bits*)key;
u32bits hash = 0;
int c = 0;
while ((c = *str++))
hash = c + (hash << 6) + (hash << 16) - hash;
return hash;
}
static int string_map_index(const ur_string_map_key_type key) {
return (int)(string_hash(key) % STRING_MAP_SIZE);
}
static string_list_header* get_string_list_header(ur_string_map *map, const ur_string_map_key_type key) {
return &(map->lists[string_map_index(key)]);
}
static int ur_string_map_init(ur_string_map* map) {
if(map) {
ns_bzero(map,sizeof(ur_string_map));
map->magic=MAGIC_HASH;
TURN_MUTEX_INIT_RECURSIVE(&(map->mutex));
return 0;
}
return -1;
}
static int ur_string_map_valid(const ur_string_map *map) {
return (map && map->magic==MAGIC_HASH);
}
ur_string_map* ur_string_map_create(ur_string_map_func del_value_func) {
ur_string_map *map=(ur_string_map*)turn_malloc(sizeof(ur_string_map));
if(ur_string_map_init(map)<0) {
turn_free(map,sizeof(ur_string_map));
return NULL;
}
map->del_value_func = del_value_func;
return map;
}
/**
* @ret:
* 0 - success
* -1 - error
* if the string key exists, and the value is different, return error.
*/
int ur_string_map_put(ur_string_map* map, const ur_string_map_key_type key, ur_string_map_value_type value) {
if(!ur_string_map_valid(map)) return -1;
else {
string_list_header* slh = get_string_list_header(map, key);
string_elem *elem = string_list_get(slh->list, key);
if(elem) {
if(elem->value != value) {
if(map->del_value_func)
map->del_value_func(elem->value);
elem->value = value;
}
return 0;
}
slh->list=string_list_add(slh->list,key,value);
return 0;
}
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
int ur_string_map_get(ur_string_map* map, const ur_string_map_key_type key, ur_string_map_value_type *value) {
if(!ur_string_map_valid(map)) return 0;
else {
string_list_header* slh = get_string_list_header(map, key);
string_elem *elem = string_list_get(slh->list, key);
if(elem) {
if(value) *value=elem->value;
return 1;
} else {
return 0;
}
}
}
/**
* @ret:
* 1 - success
* 0 - not found
*/
int ur_string_map_del(ur_string_map* map, const ur_string_map_key_type key) {
if(!ur_string_map_valid(map)) return 0;
else {
string_list_header* slh = get_string_list_header(map, key);
int counter=0;
slh->list=string_list_remove(slh->list, key, map->del_value_func, &counter);
return (counter>0);
}
}
void ur_string_map_clean(ur_string_map* map) {
if (ur_string_map_valid(map)) {
int i = 0;
for (i = 0; i < STRING_MAP_SIZE; i++) {
string_list_free(&(map->lists[i]), map->del_value_func);
}
}
}
void ur_string_map_free(ur_string_map** map) {
if(map && ur_string_map_valid(*map)) {
int i=0;
for(i=0;i<STRING_MAP_SIZE;i++) {
string_list_free(&((*map)->lists[i]),(*map)->del_value_func);
}
(*map)->magic=0;
TURN_MUTEX_DESTROY(&((*map)->mutex));
turn_free(*map,sizeof(ur_string_map));
*map=NULL;
}
}
size_t ur_string_map_size(const ur_string_map* map) {
if(ur_string_map_valid(map)) {
size_t ret=0;
int i=0;
for(i=0;i<STRING_MAP_SIZE;i++) {
ret+=string_list_size(map->lists[i].list);
}
return ret;
} else {
return 0;
}
}
int ur_string_map_lock(const ur_string_map* map) {
if(ur_string_map_valid(map)) {
TURN_MUTEX_LOCK((const turn_mutex*)&(map->mutex));
return 0;
}
return -1;
}
int ur_string_map_unlock(const ur_string_map* map) {
if(ur_string_map_valid(map)) {
TURN_MUTEX_UNLOCK((const turn_mutex*)&(map->mutex));
return 0;
}
return -1;
}
////////////////////////////////////////////////////////////////