Revision 9e7ef1a5
Added by Scott Ullrich almost 16 years ago
| etc/inc/util.inc | ||
|---|---|---|
| 122 | 122 |
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| 123 | 123 |
/* lock configuration file */ |
| 124 | 124 |
function lock($lock) {
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| 125 |
global $g, $cfglckkeyconsumers; |
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| 126 |
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if (!$lock) |
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die("WARNING: You must give a name as parameter to lock() function.");
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if (!file_exists("{$g['tmp_path']}/{$lock}.lock"))
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@touch("{$g['tmp_path']}/{$lock}.lock");
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$config_lock_key = ftok("{$g['tmp_path']}/{$lock}.lock", 'a');
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$cfglckkey = sem_get($config_lock_key, 1, 0666, true); |
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$cfglckkeyconsumers++; |
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// Rely on or own logging for errors here. |
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ini_set('error_reporting', E_NONE);
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if (!sem_acquire($cfglckkey)) {
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log_error("WARNING: lock() - Could not acquire {$lock} lock!");
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sem_remove($cfglckkey); |
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return NULL; |
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} else if ($g['debug']) |
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log_error("lock() - Got {$file} lock.");
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ini_set('error_reporting', E_ALL & ~E_NOTICE);
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return $cfglckkey; |
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global $g, $cfglckkeyconsumers; |
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if (!$lock) |
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die("WARNING: You must give a name as parameter to lock() function.");
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if (!file_exists("{$g['tmp_path']}/{$lock}.lock"))
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@touch("{$g['tmp_path']}/{$lock}.lock");
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ini_set('error_reporting', E_NONE);
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$config_lock_key = ftok("{$g['tmp_path']}/{$lock}.lock", 'a');
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$cfglckkey = sem_get($config_lock_key, 1, 0666, true); |
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$cfglckkeyconsumers++; |
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if ($fp = fopen("{$g['tmp_path']}/{$lock}.lock", "w+")) {
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if (flock($fp, LOCK_EX)) |
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return $fp; |
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else |
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fclose($fp); |
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} |
|
| 149 | 140 |
} |
| 150 | 141 |
|
| 151 | 142 |
/* unlock configuration file */ |
| 152 | 143 |
function unlock($cfglckkey = 0) {
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global $g, $cfglckkeyconsumers; |
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if ($cfglckkey == 0) |
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return; |
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// Rely on or own logging for errors here. |
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ini_set('error_reporting', E_NONE);
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if (!sem_release($cfglckkey)) |
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log_error("WARNING: unlock() - Could not unlock lock.");
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else {
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if ($g['debug']) |
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log_error("Released lock.");
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ini_set('error_reporting', E_NONE);
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sem_remove($cfglckkey); |
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ini_set('error_reporting', E_ALL & ~E_NOTICE);
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} |
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$cfglckkeyconsumers--; |
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ini_set('error_reporting', E_ALL & ~E_NOTICE);
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global $g, $cfglckkeyconsumers; |
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flock($cfglckkey, LOCK_UN); |
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return; |
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| 173 | 147 |
} |
| 174 | 148 |
|
| 175 | 149 |
function is_module_loaded($module_name) {
|
Also available in: Unified diff
Update locking to use Ermals non semaphore patch. I just beat the holy heck out of it with the CP torture scripts and all seems OK