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Use shmop module to implement reference count calls.

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This commit is contained in:
Ermal Lui 2010-03-08 18:43:29 +00:00
parent 3339fac0c4
commit ef3af02ebe
1 changed files with 29 additions and 0 deletions
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29
etc/inc/util.inc
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@ -142,6 +142,35 @@ function unlock($cfglckkey = 0) {
return;
}
function refcount_init($reference) {
$shmid = shmop_open(1000, "c", 0644, 10);
shmop_write($shmid, 0, 0);
shmop_close($shmid);
}
function refcount_reference($reference) {
$shmid = shmop_open(1000, "w", 0644, 10);
$shm_data = shmop_read($shmid, 0, 10);
$shm_data = intval($shm_data) + 1;
shmop_write($shmid, $shm_data, 0);
shmop_close($shmid);
return $shm_data;
}
function refcount_unreference($reference) {
/* We assume that the shared memory exists. */
$shmid = shmop_open(1000, "w", 0644, 10);
$shm_data = shmop_read($shmid, 0, 10);
$shm_data = intval($shm_data) - 1;
if ($shm_data < 0) {
//debug_backtrace();
log_error("Reference {$reference} is going negative, not doing unreference.");
} else
shmop_write($shmid, $shm_data, 0);
shmop_close($shmid);
}
function is_module_loaded($module_name) {
$running = `/sbin/kldstat | grep {$module_name} | /usr/bin/grep -v grep | /usr/bin/wc -l`;
if (intval($running) >= 1)