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#include "user_data.h"
struct user_data{
i64 userid;
int *fds;
i64 fds_cap,fds_len;
};
struct hash_item{
struct user_data data;
struct hash_item *next;
};
#define USER_HASH_SIZE (16)
static struct hash_item *user_hash[USER_HASH_SIZE];
static struct hash_item* find_userdata(i64 userid){
struct hash_item *item=user_hash[userid%USER_HASH_SIZE];
while(item&&item->data.userid!=userid)item=item->next;
return item;
}
void userdata_register(i64 userid,int fd){
struct hash_item *item=find_userdata(userid);
if(item){
for(i64 i=0;i<item->data.fds_len;i++){
if(item->data.fds[i]==fd){
debug("userdata_register(%lld, %d) while pair already existed",userid,fd);
return;
}
}
if(item->data.fds_len==item->data.fds_cap){
item->data.fds_cap*=2;
item->data.fds=realloc(item->data.fds,item->data.fds_cap,int);
}
item->data.fds[item->data.fds_len++]=fd;
} else {
item=malloc(1,struct hash_item);
item->data.userid=userid;
item->data.fds_cap=2;
item->data.fds_len=1;
item->data.fds=malloc(item->data.fds_cap,int);
item->data.fds[0]=fd;
item->next=user_hash[userid%USER_HASH_SIZE];
user_hash[userid%USER_HASH_SIZE]=item;
}
}
void userdata_unregister(i64 userid,int fd);
bool userdata_online(i64 userid);
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