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fixed sync to be more robust

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This commit is contained in:
botanic 2014-09-05 19:38:53 -07:00
parent f9c4c3ac1f
commit 4f51c4cdb6
1 changed files with 36 additions and 3 deletions
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37
code/web/private_php/ams/autoload/sync.php
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@ -7,6 +7,11 @@
*/
class Sync{
const OS_UNKNOWN = 1;
const OS_WIN = 2;
const OS_LINUX = 3;
const OS_OSX = 4;
/**
* performs the actions listed in the querycache.
* All entries in the querycache will be read and performed depending on their type.
@ -24,10 +29,10 @@ class Sync{
if(isset($pid) and function_exists('pcntl_fork') ) {
// We're the main process.
} else {
if(!file_exists($pidfile)) {
$pid = getmypid();
if(!file_exists($pidfile) or (file_exists($pidfile) && Sync::check_pid(file_get_contents($pid)))) {
$file = fopen($pidfile, 'w+');
if (!$file)
if (!$file) {
echo $pidfile.' is not writeable.';
error_log($pidfile.' is not writeable.');
throw new SystemExit();
@ -94,4 +99,32 @@ class Sync{
}
}
public static function check_pid($pid){
$OS = Sync::getOS();
if ($OS == 2) {
$processes = explode( "\n", shell_exec( "tasklist.exe" ));
foreach( $processes as $process )
{
if( strpos( "Image Name", $process ) === 0
|| strpos( "===", $process ) === 0 )
continue;
$matches = false;
preg_match( "/(.*?)\s+(\d+).*$/", $process, $matches );
$pid = $matches[ 2 ];
}
} else {
return file_exists( "/proc/$pid" );
}
}
static public function getOS() {
switch (true) {
case stristr(PHP_OS, 'DAR'): return self::OS_OSX;
case stristr(PHP_OS, 'WIN'): return self::OS_WIN;
case stristr(PHP_OS, 'LINUX'): return self::OS_LINUX;
default : return self::OS_UNKNOWN;
}
}
}