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readability code clean-up (#547)

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Francesco Carli 2020-12-19 12:28:57 +01:00 committed by GitHub
parent bd48a5c34d
commit 4e6d9a8f43
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2 changed files with 36 additions and 29 deletions
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0
include/sn_selection.h Executable file → Normal file
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17
src/sn_selection.c Executable file → Normal file
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@ -26,6 +26,7 @@ static int sn_selection_criterion_sort(peer_info_t *a, peer_info_t *b);
/* Initialize selection_criterion field in peer_info structure*/
int sn_selection_criterion_init (peer_info_t *peer) {
if(peer != NULL) {
sn_selection_criterion_default(&(peer->selection_criterion));
}
@ -35,6 +36,7 @@ int sn_selection_criterion_init(peer_info_t *peer){
/* Set selection_criterion field to default value according to selected strategy. */
int sn_selection_criterion_default (SN_SELECTION_CRITERION_DATA_TYPE *selection_criterion) {
*selection_criterion = (SN_SELECTION_CRITERION_DATA_TYPE) UINT32_MAX >> 1;
return 0; /* OK */
@ -44,11 +46,11 @@ int sn_selection_criterion_default(SN_SELECTION_CRITERION_DATA_TYPE *selection_c
* This function is highly dependant of the chosen selection criterion.
*/
int sn_selection_criterion_calculate (n2n_edge_t *eee, peer_info_t *peer, SN_SELECTION_CRITERION_DATA_TYPE *data) {
SN_SELECTION_CRITERION_DATA_TYPE common_data;
int sum = 0;
common_data = sn_selection_criterion_common_read(eee);
peer->selection_criterion = (SN_SELECTION_CRITERION_DATA_TYPE)(be32toh(*data) + common_data);
/* Mitigation of the real supernode load in order to see less oscillations.
@ -65,14 +67,13 @@ int sn_selection_criterion_calculate(n2n_edge_t *eee, peer_info_t *peer, SN_SELE
/* Set sn_selection_criterion_common_data field to default value. */
int sn_selection_criterion_common_data_default (n2n_edge_t *eee) {
SN_SELECTION_CRITERION_DATA_TYPE tmp = 0;
tmp = HASH_COUNT(eee->pending_peers);
if(eee->conf.header_encryption == HEADER_ENCRYPTION_ENABLED) {
tmp *= 2;
}
eee->sn_selection_criterion_common_data = tmp / HASH_COUNT(eee->conf.supernodes);
return 0; /* OK */
@ -80,17 +81,20 @@ int sn_selection_criterion_common_data_default(n2n_edge_t *eee){
/* Return the value of sn_selection_criterion_common_data field. */
static SN_SELECTION_CRITERION_DATA_TYPE sn_selection_criterion_common_read (n2n_edge_t *eee) {
return eee->sn_selection_criterion_common_data;
}
/* Function that compare two selection_criterion fields and sorts them in ascending order. */
static int sn_selection_criterion_sort (peer_info_t *a, peer_info_t *b) {
// comparison function for sorting supernodes in ascending order of their selection_criterion.
return (a->selection_criterion - b->selection_criterion);
}
/* Function that sorts peer_list using sn_selection_criterion_sort. */
int sn_selection_sort (peer_info_t **peer_list) {
HASH_SORT(*peer_list, sn_selection_criterion_sort);
return 0; /* OK */
@ -98,6 +102,7 @@ int sn_selection_sort(peer_info_t **peer_list){
/* Function that gathers requested data on a supernode. */
SN_SELECTION_CRITERION_DATA_TYPE sn_selection_criterion_gather_data (n2n_sn_t *sss) {
SN_SELECTION_CRITERION_DATA_TYPE data = 0, tmp = 0;
struct sn_community *comm, *tmp_comm;
@ -114,9 +119,11 @@ SN_SELECTION_CRITERION_DATA_TYPE sn_selection_criterion_gather_data(n2n_sn_t *ss
/* Convert selection_criterion field in a string for management port output. */
extern char * sn_selection_criterion_str (selection_criterion_str_t out, peer_info_t *peer) {
if(NULL == out) { return NULL; }
memset(out, 0, SN_SELECTION_CRITERION_BUF_SIZE);
if(NULL == out) {
return NULL;
}
memset(out, 0, SN_SELECTION_CRITERION_BUF_SIZE);
snprintf(out, SN_SELECTION_CRITERION_BUF_SIZE - 1, "ld = %d", (short int)(peer->selection_criterion));
return out;