/* returns != 0 if present in nometa array, == 0 if absent */
int st_check_if_matches_nometa (const t_st_strtable *st_strtable, const char *strdata)
{
int strdata_hash;
int pos;
int total_entries;
strdata_hash = string_fingerprint (strdata);
total_entries = st_strtable->nometa.total_entries;
pos = 0;
while (pos < total_entries) {
if (st_strtable->nometa.hashes_tab[pos] == strdata_hash) {
if (strcmp (strdata, st_strtable->nometa.exp_tab[pos]) == 0)
return (1);
}
pos++;
}
return (0);
}
void st_insert_base (t_st_strtable *st_strtable, const char *strexp, int force_nometa)
{
int has_meta; /* !=0 if meta */
int strexp_len;
int prev_exp_data_len;
int i, pos;
int *total_entries;
int **hashes_tab;
char ***exp_tab;
char **exp_data;
int *exp_data_len;
int *largest_len;
if (force_nometa == 0) {
if (strchr (strexp, '*') == NULL)
has_meta = 0;
else
has_meta = 1;
} else {
has_meta = 0;
}
strexp_len = strlen (strexp);
if (has_meta == 0) {
/* nometa */
total_entries = &(st_strtable->nometa.total_entries);
hashes_tab = &(st_strtable->nometa.hashes_tab);
exp_tab = &(st_strtable->nometa.exp_tab);
exp_data = &(st_strtable->nometa.exp_data);
exp_data_len = &(st_strtable->nometa.exp_data_len);
} else {
/* meta */
total_entries = &(st_strtable->meta.total_entries);
exp_tab = &(st_strtable->meta.exp_tab);
exp_data = &(st_strtable->meta.exp_data);
exp_data_len = &(st_strtable->meta.exp_data_len);
largest_len = &(st_strtable->meta.largest_len);
}
prev_exp_data_len = *exp_data_len;
*total_entries += 1;
*exp_data_len += strexp_len + 1;
*exp_tab = realloc (*exp_tab, sizeof (char *) * *total_entries);
*exp_data = realloc (*exp_data, sizeof (char) * *exp_data_len);
if (has_meta == 0)
*hashes_tab = realloc (*hashes_tab, sizeof (int *) * *total_entries);
/* generate hash */
if (has_meta == 0)
(*hashes_tab)[*total_entries - 1] = string_fingerprint (strexp);
/* update largest_len */
if (has_meta != 0) {
if (strexp_len > *largest_len)
*largest_len = strexp_len;
}
strcpy (*exp_data + prev_exp_data_len, strexp);
/* realloc'ed buffer, regenerate exp_tab */
pos = 0;
for (i = 0; i < *total_entries; i++) {
(*exp_tab)[i] = *exp_data + pos;
pos += strlen (*exp_data + pos) + 1;
}
}
/* returns: >= 0 (position in matrix), ok -- -1, error */
int stats_matrix_add_into (t_stats_matrix *stats_matrix, long long int bytes_in, long long int bytes_out, const char *host_name)
{
int pos_in_matrix = -1;
int counter;
int host_name_fingerprint;
int *fingerprints_table;
int used_entries;
t_stats_line *table;
int found_in_cache = 0;
fingerprints_table = stats_matrix->host_name_fingerprint;
used_entries = stats_matrix->used_entries;
table = stats_matrix->table;
host_name_fingerprint = string_fingerprint (host_name);
/* check whether host entry exists */
/* checks in cache, first */
counter = 0;
while (LIKELY(counter < HOSTNAME_CACHE_ENTRIES)) {
if (UNLIKELY(stats_matrix->hostname_cache.host_name_fingerprint [counter] == host_name_fingerprint)) {
if (LIKELY(stats_matrix->hostname_cache.entry_position_in_table [counter] >= 0)) {
if (LIKELY(! fast_strcmp (table[stats_matrix->hostname_cache.entry_position_in_table [counter]].host_name, host_name))) {
pos_in_matrix = stats_matrix->hostname_cache.entry_position_in_table [counter];
found_in_cache = 1;
counter = HOSTNAME_CACHE_ENTRIES; /* ends loop */
}
}
}
counter++;
}
/* if not found in cache, search the whole table */
if (UNLIKELY(pos_in_matrix < 0)) {
counter = 0;
while (LIKELY(counter < used_entries)) {
if (UNLIKELY(fingerprints_table[counter] == host_name_fingerprint)) {
if (LIKELY(! fast_strcmp (table[counter].host_name, host_name))) {
pos_in_matrix = counter;
counter = used_entries; /* ends loop */
}
}
counter++;
}
}
/* create host entry, if it does not exist */
if (UNLIKELY(pos_in_matrix < 0)) {
pos_in_matrix = stats_matrix_alloc_entry (stats_matrix);
if (pos_in_matrix < 0) // realloc error
return (-1);
stats_matrix->table[pos_in_matrix].total_bytes_orig = 0;
stats_matrix->table[pos_in_matrix].total_bytes_comp = 0;
stats_matrix->table[pos_in_matrix].total_accesses = 0;
strncpy (stats_matrix->table[pos_in_matrix].host_name, host_name, HOSTNAME_BUFFER - 1);
stats_matrix->table[pos_in_matrix].host_name[strlen (host_name)] = '\0';
stats_matrix->host_name_fingerprint[pos_in_matrix] = string_fingerprint (stats_matrix->table[pos_in_matrix].host_name);
}
/* if not found in cache, roll the cache and insert that entry */
if (found_in_cache == 0) {
stats_matrix->hostname_cache.entry_position_in_table[stats_matrix->hostname_cache.next_avail] = pos_in_matrix;
stats_matrix->hostname_cache.host_name_fingerprint [stats_matrix->hostname_cache.next_avail] = host_name_fingerprint;
stats_matrix->hostname_cache.next_avail++;
if (stats_matrix->hostname_cache.next_avail == HOSTNAME_CACHE_ENTRIES)
stats_matrix->hostname_cache.next_avail = 0;
}
/* update host data */
stats_matrix->table[pos_in_matrix].total_bytes_orig += bytes_in;
stats_matrix->table[pos_in_matrix].total_bytes_comp += bytes_out;
stats_matrix->table[pos_in_matrix].total_accesses++;
return (pos_in_matrix);
}