function JB_do_house_keeping()
{
global $jb_mysql_link;
if (defined('NO_HOUSE_KEEPING')) {
return;
}
$unix_time = time();
// get the time of last run housekeep
$sql = "SELECT * FROM `jb_variables` where `key` = 'LAST_HOUSEKEEP_RUN' ";
if (!($result = JB_mysql_query($sql))) {
return false;
}
$t_row = @mysql_fetch_array($result, MYSQL_ASSOC);
// Poor man's lock
//$sql = "LOCK TABLES `jb_variables` WRITE";
//JB_mysql_query($sql)
$sql = "UPDATE `jb_variables` SET `val`='YES' WHERE `key`='HOUSEKEEP_RUNNING' AND `val`='NO' ";
$result = @JB_mysql_query($sql) or $DB_ERROR = mysql_error();
if (JB_mysql_affected_rows() == 0) {
// it is running in another proccess
// make sure it cannot be locked for more than 30 secs
// This is in case the proccess fails inside the lock
// and does not release it.
if ($unix_time > $t_row['val'] + 30) {
// 30
// release the lock
$sql = "UPDATE `jb_variables` SET `val`='NO' WHERE `key`='HOUSEKEEP_RUNNING' ";
$result = @JB_mysql_query($sql) or $DB_ERROR = mysql_error();
// update timestamp
$sql = "REPLACE INTO jb_variables (`key`, `val`) VALUES ('LAST_HOUSEKEEP_RUN', '{$unix_time}') ";
$result = @JB_mysql_query($sql) or $DB_ERROR = mysql_error();
}
return;
// this function is already executing in another process.
}
///////////////////////////////////////////////////////////
// Start Critical Section - is only executed in one process at at time
///////////////////////////////////////////////////////////
JB_save_session();
// update sessions on every request
JBPLUG_do_callback('house_keeping_critical_section', $A = false);
// added in 3.6.1
if ($unix_time > $t_row['val'] + 60) {
// did 1 minute elapse since last run? 60
// do stuff here -
JBPLUG_do_callback('do_house_keeping', $A = false);
// added in 3.5.0
JB_update_all_sessions();
// update timestamp
$sql = "REPLACE INTO jb_variables (`key`, `val`) VALUES ('LAST_HOUSEKEEP_RUN', '{$unix_time}') ";
$result = @JB_mysql_query($sql) or $DB_ERROR = mysql_error();
if (!defined('NO_HOUSE_KEEPING') && JB_CRON_EMULATION_ENABLED == 'YES') {
set_time_limit(40);
JB_do_cron_job();
}
}
// release the poor man's lock
$sql = "UPDATE `jb_variables` SET `val`='NO' WHERE `key`='HOUSEKEEP_RUNNING' ";
JB_mysql_query($sql) or die(mysql_error());
/////////////////////////////////////////////////////////////////
// End Critical Section
}
if (!defined('JB_CRON_HTTP_USER')) {
define('JB_CRON_HTTP_USER', '');
}
if (!defined('JB_CRON_HTTP_PASS')) {
define('JB_CRON_HTTP_PASS', '');
}
if (JB_CRON_HTTP_ALLOW == 'YES') {
if (strlen(JB_CRON_HTTP_USER) > 0) {
// requires user/pass?
if (!isset($_SERVER['PHP_AUTH_USER'])) {
header('WWW-Authenticate: Basic realm="Jamit Cron"');
header('HTTP/1.0 401 Unauthorized');
echo 'Access Denied. Please see the user/pass on the Admin->Edit Config page, \'Cron Settings\'.';
exit;
} else {
if ($_SERVER['PHP_AUTH_USER'] !== JB_CRON_HTTP_USER && $_SERVER['PHP_AUTH_PW'] !== JB_CRON_HTTP_PASS) {
header('WWW-Authenticate: Basic realm="Jamit Cron"');
header('HTTP/1.0 401 Unauthorized');
die('Login Failed. Please see the user/pass on the Admin->Edit Config page, \'Cron Settings\'');
}
}
}
} else {
die('This script cannot be executed from the web browser. Please see settings in Admin->Edit Config, also Admin->Cron Info for more details');
}
}
@set_time_limit(180);
// (180 seconds, 3 min max)
if (JB_CRON_EMULATION_ENABLED != 'YES') {
JB_do_cron_job();
}
