static void expire_queries()
{
dns_query_t *q = NULL, *next = NULL;
int i = 0;
/* need to check for expired queries and either:
a) recheck/change ns
b) expire due to ttl
*/
if (query_head) {
for (q = query_head; q; q = q->next) {
if (q->expiretime <= now) { /* set in alloc_query */
if (q->next)
next = q->next;
egg_dns_cancel(q->id, 1);
if (!next) break;
q = next;
}
}
}
for (i = 0; i < ncache; i++) {
if (cache_expired(i)) {
cache_del(i);
if (i == ncache) break;
i--;
}
}
}
/*!
* \brief LineSensor::LineSensor creates sensor object, that is connected to
* the linesensor port of V-REP.
*/
LineSensor::LineSensor() :
SimComm(PORT_NUM_LINE) // call superclass constructor with correct port number
{
this->cachevalues = this->pvalues;
this->pvalues.reset();
QObject::connect(this, SIGNAL(cache_expired()), this, SLOT(reset_cache()));
}
/*!
* \brief SimComm::SimComm creates an abstract object to communicate with V-REP. \n
* This object does the actual communication via TCP sockets, and has the timer
* to signal cache expiration.
* \param port the TCP port to open.
*/
SimComm::SimComm(int port) :
cache_timer(new QTimer()),
socket(new QTcpSocket()),
port(port),
connected(false)
{
this->cache_timer->setSingleShot(true);
QObject::connect(this->cache_timer.get(), SIGNAL(timeout()), this, SIGNAL(cache_expired()));
QObject::connect(this->socket.get(), SIGNAL(stateChanged(QAbstractSocket::SocketState)), this, SLOT(socketStateChanged(QAbstractSocket::SocketState)));
}
_nc_first_db(DBDIRS * state, int *offset)
{
bool cache_has_expired = FALSE;
*state = dbdTIC;
*offset = 0;
T(("_nc_first_db"));
/* build a blob containing all of the strings we will use for a lookup
* table.
*/
if (my_blob == 0 || (cache_has_expired = cache_expired())) {
size_t blobsize = 0;
const char *values[dbdLAST];
struct stat *my_stat;
int j, k;
if (cache_has_expired)
free_cache();
for (j = 0; j < dbdLAST; ++j)
values[j] = 0;
/*
* This is the first item in the list, and is used only when tic is
* writing to the database, as a performance improvement.
*/
values[dbdTIC] = TicDirectory;
#if NCURSES_USE_DATABASE
#ifdef TERMINFO_DIRS
values[dbdCfgList] = TERMINFO_DIRS;
#endif
#ifdef TERMINFO
values[dbdCfgOnce] = TERMINFO;
#endif
#endif
#if NCURSES_USE_TERMCAP
values[dbdCfgList2] = TERMPATH;
#endif
if (use_terminfo_vars()) {
#if NCURSES_USE_DATABASE
values[dbdEnvOnce] = cache_getenv("TERMINFO", dbdEnvOnce);
values[dbdHome] = _nc_home_terminfo();
(void) cache_getenv("HOME", dbdHome);
values[dbdEnvList] = cache_getenv("TERMINFO_DIRS", dbdEnvList);
#endif
#if NCURSES_USE_TERMCAP
values[dbdEnvOnce2] = cache_getenv("TERMCAP", dbdEnvOnce2);
/* only use $TERMCAP if it is an absolute path */
if (values[dbdEnvOnce2] != 0
&& *values[dbdEnvOnce2] != '/') {
values[dbdEnvOnce2] = 0;
}
values[dbdEnvList2] = cache_getenv("TERMPATH", dbdEnvList2);
#endif /* NCURSES_USE_TERMCAP */
}
for (j = 0; j < dbdLAST; ++j) {
if (values[j] == 0)
values[j] = "";
blobsize += 2 + strlen(values[j]);
}
my_blob = malloc(blobsize);
if (my_blob != 0) {
*my_blob = '\0';
for (j = 0; j < dbdLAST; ++j) {
add_to_blob(values[j], blobsize);
}
/* Now, build an array which will be pointers to the distinct
* strings in the blob.
*/
blobsize = 2;
for (j = 0; my_blob[j] != '\0'; ++j) {
if (my_blob[j] == NCURSES_PATHSEP)
++blobsize;
}
my_list = typeCalloc(char *, blobsize);
my_stat = typeCalloc(struct stat, blobsize);
if (my_list != 0 && my_stat != 0) {
k = 0;
my_list[k++] = my_blob;
for (j = 0; my_blob[j] != '\0'; ++j) {
if (my_blob[j] == NCURSES_PATHSEP) {
my_blob[j] = '\0';
my_list[k++] = &my_blob[j + 1];
}
}
/*
* Eliminate duplicates from the list.
*/
for (j = 0; my_list[j] != 0; ++j) {
#ifdef TERMINFO
if (*my_list[j] == '\0')
my_list[j] = strdup(TERMINFO);
#endif
for (k = 0; k < j; ++k) {
if (!strcmp(my_list[j], my_list[k])) {
k = j - 1;
while ((my_list[j] = my_list[j + 1]) != 0) {
++j;
}
j = k;
break;
}
}
}
/*
* Eliminate non-existent databases, and those that happen to
* be symlinked to another location.
*/
for (j = 0; my_list[j] != 0; ++j) {
bool found = check_existence(my_list[j], &my_stat[j]);
#if HAVE_LINK
if (found) {
for (k = 0; k < j; ++k) {
if (my_stat[j].st_dev == my_stat[k].st_dev
&& my_stat[j].st_ino == my_stat[k].st_ino) {
found = FALSE;
break;
}
}
}
#endif
if (!found) {
k = j;
while ((my_list[k] = my_list[k + 1]) != 0) {
++k;
}
--j;
}
}
my_size = j;
my_time = time((time_t *) 0);
} else {
FreeAndNull(my_blob);
}
free(my_stat);
}
_nc_last_db(void)
{
if (my_blob != 0 && cache_expired()) {
free_cache();
}
}
