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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <threads.h>
#include "mdb.h"
static int setkey_helper(void *thr_data);
static int delkey_helper(void *thr_data);
static int *clone(int n);
static tablist_t *copytab(tablist_t *dst, tablist_t *src);
static void dellist(tablist_t *list);
extern int setkey(tablist_t **, int, char *);
extern int delkey(tablist_t *, int, char *);
tablist_t *setkey_copy;
char *setkey_str;
mtx_t setkey_mtx;
int setkeys(tablist_t **list, int id, char **pairs, int len)
{
if (id < -1 || pairs == NULL || len <= 0)
return -1;
if (mtx_init(&setkey_mtx, mtx_plain) != thrd_success)
return -2;
int rc = 0;
setkey_copy = calloc((*list)[0].len, sizeof(tablist_t));
copytab(setkey_copy, *list);
for (int i = 0; i < len; ++i) {
setkey_str = pairs[i];
if (id == -1) {
thrd_t *thrds = calloc((*list)[0].len, sizeof(thrd_t));
for (int i = 0; i < setkey_copy[0].len; ++i)
thrd_create(&thrds[i], setkey_helper, clone(i));
for (int i = 0; i < setkey_copy[0].len; ++i) {
if (rc)
thrd_join(thrds[i], NULL);
else
thrd_join(thrds[i], &rc);
}
free(thrds);
}
else
rc = setkey_helper(clone(id));
}
if (!rc) {
if (setkey_copy[0].len > (*list)[0].len)
*list = realloc(*list, setkey_copy[0].len * sizeof(tablist_t));
dellist(*list);
copytab(*list, setkey_copy);
}
dellist(setkey_copy);
free(setkey_copy);
return rc;
}
tablist_t *delkey_copy;
char **delkeys_keys;
int keys_len;
mtx_t delkey_mtx;
int delkeys(tablist_t *list, int id, char **keys, int len)
{
if (id < -1 || len < 0)
return -1;
if (mtx_init(&delkey_mtx, mtx_plain) != thrd_success)
return -2;
int rc = 0;
delkey_copy = calloc(list[0].len, sizeof(tablist_t));
copytab(delkey_copy, list);
delkeys_keys = keys;
keys_len = len;
if (id == -1) {
thrd_t *thrds = calloc(list[0].len, sizeof(thrd_t));
for (int i = 0; i < delkey_copy[0].len; ++i)
thrd_create(&thrds[i], delkey_helper, clone(i));
for (int i = 0; i < delkey_copy[0].len; ++i) {
if (rc)
thrd_join(thrds[i], NULL);
else
thrd_join(thrds[i], &rc);
}
free(thrds);
} else
rc = delkey_helper(clone(id));
if (!rc) {
dellist(list);
memmove(list, delkey_copy, delkey_copy[0].len * sizeof(tablist_t));
} else
dellist(delkey_copy);
free(delkey_copy);
return rc;
}
static int setkey_helper(void *thr_data)
{
int rc;
int *id = (int *) thr_data;
mtx_lock(&setkey_mtx);
rc = setkey(&setkey_copy, *id, setkey_str);
mtx_unlock(&setkey_mtx);
free(id);
return rc;
}
static int delkey_helper(void *thr_data)
{
int rc = 0;
int *id = (int *) thr_data;
mtx_lock(&delkey_mtx);
if (keys_len > 0 && delkeys_keys != NULL)
for (int i = 0; i < keys_len; ++i) {
if (delkeys_keys[i] == NULL)
return -3;
rc = delkey(delkey_copy, *id, delkeys_keys[i]);
}
else {
tabidx_t *indexes = getkeys(delkey_copy, *id, NULL, 0);
for (int i = 0; indexes[i].flag; ++i)
rc = delkey(delkey_copy, *id, indexes[i].key);
free(indexes);
}
mtx_unlock(&delkey_mtx);
free(id);
return rc;
}
static int *clone(int n)
{
int *c = calloc(1, sizeof(int));
*c = n;
return c;
}
static tablist_t *copytab(tablist_t *dst, tablist_t *src)
{
if (dst == NULL)
return NULL;
dst[0].len = src[0].len;
for (int i = 0; i < src[0].len; ++i) {
for (int j = 0; j < TABLEN; ++j) {
dst[i].tab[j] = (tabidx_t) { NULL, 0, { 0 } };
if (src[i].tab[j].flag) {
switch (src[i].tab[j].flag) {
case 3:
dst[i].tab[j].value.str =
calloc(strlen(src[i].tab[j].value.str) + 1, sizeof(char));
strcpy(dst[i].tab[j].value.str, src[i].tab[j].value.str);
break;
default:
dst[i].tab[j].value = src[i].tab[j].value;
break;
}
dst[i].tab[j].flag = src[i].tab[j].flag;
dst[i].tab[j].key = calloc(strlen(src[i].tab[j].key) + 1, sizeof(char));
strcpy(dst[i].tab[j].key, src[i].tab[j].key);
}
}
}
return dst;
}
static void dellist(tablist_t *list)
{
for (int i = 0; i < list[0].len; ++i) {
tabidx_t *indexes = getkeys(list, i, NULL, 0);
for (int j = 0; indexes[j].flag; ++j)
delkey(list, i, indexes[j].key);
free(indexes);
}
}
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