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Dominique Fournier
2022-11-25 21:21:30 +01:00
parent 2d6df0d5f0
commit 94deb06f52
132 changed files with 44887 additions and 41368 deletions
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197
src/Lockfile.php
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@@ -1,4 +1,5 @@
<?php
/** DomFramework
* @package domframework
* @author Dominique Fournier <dominique@fournier38.fr>
@@ -11,107 +12,123 @@ namespace Domframework;
*/
class Lockfile
{
/** The Exclusive lock file */
public $storagelock = "./data/lockfile.lock";
/** The Read-Only lock file */
private $storagelockRO = FALSE;
/** The Exclusive lock file */
public $storagelock = "./data/lockfile.lock";
/** The Read-Only lock file */
private $storagelockRO = false;
/** This function lock the storage file until all is written.
If an other processus want to lock, it hang until the lock is released */
public function lockRW ()
{
if (!is_dir (dirname ($this->storagelock)))
@mkdir (dirname ($this->storagelock));
if (!is_dir (dirname ($this->storagelock)))
throw new \Exception ("Can't create '".dirname ($this->storagelock).
/** This function lock the storage file until all is written.
If an other processus want to lock, it hang until the lock is released */
public function lockRW()
{
if (!is_dir(dirname($this->storagelock))) {
@mkdir(dirname($this->storagelock));
}
if (!is_dir(dirname($this->storagelock))) {
throw new \Exception(
"Can't create '" . dirname($this->storagelock) .
"' directory for lockfile",
500);
$lockid = uniqid() . '_' . md5 (mt_rand());
$startTime = microtime (TRUE);
// Stale lock : 60s old min
if (file_exists ($this->storagelock) &&
filemtime ($this->storagelock) < time() - 60)
{
// TODO : Log the Stale lock removing
unlink ($this->storagelock);
500
);
}
$lockid = uniqid() . '_' . md5(mt_rand());
$startTime = microtime(true);
// Stale lock : 60s old min
if (
file_exists($this->storagelock) &&
filemtime($this->storagelock) < time() - 60
) {
// TODO : Log the Stale lock removing
unlink($this->storagelock);
}
// Wait RW Lock
while (1) {
while (file_exists($this->storagelock)) {
usleep(100000);
clearstatcache(true, $this->storagelock);
if (microtime(true) > $startTime + 10) {
throw new \Exception(
"Can't have the authorization lock RW in 10s",
500
);
}
}
file_put_contents($this->storagelock, $lockid, FILE_APPEND);
clearstatcache(true, $this->storagelock);
$cnt = file_get_contents($this->storagelock);
if (substr($cnt, 0, strlen($lockid)) === $lockid) {
break;
}
}
// Wait all the RO lock to go away
$startTime = microtime(true);
while (count(glob($this->storagelock . "-*")) > 0) {
usleep(100000);
if (microtime(true) > $startTime + 10) {
throw new \Exception(
"Can't have the authorization lock RO in 10s",
500
);
}
}
// I have the lock and no RO lock !
return true;
}
// Wait RW Lock
while (1)
/** This function lock the storage in share mode (to read the file without
modification at the same time) */
public function lockRO()
{
while (file_exists ($this->storagelock))
{
usleep (100000);
clearstatcache (TRUE, $this->storagelock);
if (microtime (TRUE) > $startTime + 10)
throw new \Exception ("Can't have the authorization lock RW in 10s",
500);
}
if (!is_dir(dirname($this->storagelock))) {
@mkdir(dirname($this->storagelock));
}
if (!is_dir(dirname($this->storagelock))) {
throw new \Exception(
"Can't create '" . dirname($this->storagelock) . "'",
500
);
}
$lockid = uniqid() . '_' . md5(mt_rand());
// Stale lock : 60s old min
if (
file_exists($this->storagelock) &&
filemtime($this->storagelock) < time() - 60
) {
// TODO : Log the Stale lock removing
unlink($this->storagelock);
}
file_put_contents ($this->storagelock, $lockid, FILE_APPEND);
clearstatcache (TRUE, $this->storagelock);
$cnt = file_get_contents ($this->storagelock);
if (substr ($cnt, 0, strlen ($lockid)) === $lockid)
break;
// wait the removing of lockRW
$startTime = microtime(true);
while (file_exists($this->storagelock)) {
usleep(100000);
clearstatcache(true, $this->storagelock);
if (microtime(true) > $startTime + 10) {
throw new \Exception("Can't have the authorization lock in 10s", 500);
}
}
touch($this->storagelock . "-" . $lockid);
$this->storagelockRO = $this->storagelock . "-" . $lockid;
}
// Wait all the RO lock to go away
$startTime = microtime (TRUE);
while (count (glob ($this->storagelock."-*")) > 0)
/** This function unlock RW the storage file */
public function unlockRW()
{
usleep (100000);
if (microtime (TRUE) > $startTime + 10)
throw new \Exception ("Can't have the authorization lock RO in 10s",
500);
if (file_exists($this->storagelock)) {
unlink($this->storagelock);
}
}
// I have the lock and no RO lock !
return TRUE;
}
/** This function lock the storage in share mode (to read the file without
modification at the same time) */
public function lockRO ()
{
if (!is_dir (dirname ($this->storagelock)))
@mkdir (dirname ($this->storagelock));
if (!is_dir (dirname ($this->storagelock)))
throw new \Exception ("Can't create '".dirname ($this->storagelock)."'",
500);
$lockid = uniqid() . '_' . md5 (mt_rand());
// Stale lock : 60s old min
if (file_exists ($this->storagelock) &&
filemtime ($this->storagelock) < time() - 60)
/** This function unlock RO the storage file */
public function unlockRO()
{
// TODO : Log the Stale lock removing
unlink ($this->storagelock);
if ($this->storagelockRO !== false && file_exists($this->storagelockRO)) {
unlink($this->storagelockRO);
}
}
// wait the removing of lockRW
$startTime = microtime (TRUE);
while (file_exists ($this->storagelock))
{
usleep (100000);
clearstatcache (TRUE, $this->storagelock);
if (microtime (TRUE) > $startTime + 10)
throw new \Exception ("Can't have the authorization lock in 10s", 500);
}
touch ($this->storagelock."-".$lockid);
$this->storagelockRO = $this->storagelock."-".$lockid;
}
/** This function unlock RW the storage file */
public function unlockRW ()
{
if (file_exists ($this->storagelock))
unlink ($this->storagelock);
}
/** This function unlock RO the storage file */
public function unlockRO ()
{
if ($this->storagelockRO !== FALSE && file_exists ($this->storagelockRO))
unlink ($this->storagelockRO);
}
}