// Provide some ability to lock a PHP function so that multiple processes
// can't run the function concurrently
-if(! function_exists('lock_function')) {
+if (! function_exists('lock_function')) {
function lock_function($fn_name, $block = true, $wait_sec = 2, $timeout = 30) {
- if( $wait_sec == 0 )
+ if ( $wait_sec == 0 )
$wait_sec = 2; // don't let the user pick a value that's likely to crash the system
$got_lock = false;
dbesc($fn_name)
);
- if((count($r)) AND (!$r[0]['locked'] OR (strtotime($r[0]['created']) < time() - 3600))) {
+ if ((dbm::is_result($r)) AND (!$r[0]['locked'] OR (strtotime($r[0]['created']) < time() - 3600))) {
q("UPDATE `locks` SET `locked` = 1, `created` = '%s' WHERE `name` = '%s'",
dbesc(datetime_convert()),
dbesc($fn_name)
);
$got_lock = true;
}
- elseif(! $r) { // the Boolean value for count($r) should be equivalent to the Boolean value of $r
+ elseif (! dbm::is_result($r)) {
+ /// @TODO the Boolean value for count($r) should be equivalent to the Boolean value of $r
q("INSERT INTO `locks` (`name`, `created`, `locked`) VALUES ('%s', '%s', 1)",
dbesc($fn_name),
dbesc(datetime_convert())
q("UNLOCK TABLES");
- if(($block) && (! $got_lock))
+ if (($block) && (! $got_lock))
sleep($wait_sec);
- } while(($block) && (! $got_lock) && ((time() - $start) < $timeout));
+ } while (($block) && (! $got_lock) && ((time() - $start) < $timeout));
logger('lock_function: function ' . $fn_name . ' with blocking = ' . $block . ' got_lock = ' . $got_lock . ' time = ' . (time() - $start), LOGGER_DEBUG);
}}
-if(! function_exists('block_on_function_lock')) {
+if (! function_exists('block_on_function_lock')) {
function block_on_function_lock($fn_name, $wait_sec = 2, $timeout = 30) {
- if( $wait_sec == 0 )
+ if ( $wait_sec == 0 )
$wait_sec = 2; // don't let the user pick a value that's likely to crash the system
$start = time();
do {
$r = q("SELECT locked FROM locks WHERE name = '%s' LIMIT 1",
- dbesc($fn_name)
- );
+ dbesc($fn_name)
+ );
- if(count($r) && $r[0]['locked'])
+ if (dbm::is_result($r) && $r[0]['locked']) {
sleep($wait_sec);
+ }
- } while(count($r) && $r[0]['locked'] && ((time() - $start) < $timeout));
+ } while (dbm::is_result($r) && $r[0]['locked'] && ((time() - $start) < $timeout));
return;
}}
-if(! function_exists('unlock_function')) {
+if (! function_exists('unlock_function')) {
function unlock_function($fn_name) {
$r = q("UPDATE `locks` SET `locked` = 0, `created` = '0000-00-00 00:00:00' WHERE `name` = '%s'",
dbesc($fn_name)