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<?php
/* Copyright (C) 2009-2010 Laurent Destailleur <eldy@users.sourceforge.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* or see http://www.gnu.org/
*/
/**
* \file htdocs/core/lib/memory.lib.php
* \brief Set of function for memory/cache management
*/
global $shmkeys,$shmoffset;
$shmkeys=array('main'=>1,'admin'=>2,'dict'=>3,'companies'=>4,'suppliers'=>5,'products'=>6,
'commercial'=>7,'compta'=>8,'projects'=>9,'cashdesk'=>10,'agenda'=>11,'bills'=>12,
'propal'=>13,'boxes'=>14,'banks'=>15,'other'=>16,'errors'=>17,'members'=>18,'ecm'=>19,
'orders'=>20,'users'=>21,'help'=>22,'stocks'=>23,'interventions'=>24,
'donations'=>25,'contracts'=>26);
$shmoffset=1000; // Max number of entries found into a language file. If too low, some entries will be overwritten.
/**
* Save data into a memory area shared by all users, all sessions on server
*
* @param string $memoryid Memory id of shared area
* @param string $data Data to save
* @return int <0 if KO, Nb of bytes written if OK
*/
function dol_setcache($memoryid, $data)
{
global $conf;
$result=0;
// Using a memcached server
if (! empty($conf->memcached->enabled) && class_exists('Memcached'))
{
global $dolmemcache;
if (empty($dolmemcache) || ! is_object($dolmemcache))
{
$dolmemcache=new Memcached();
$tmparray=explode(':', $conf->global->MEMCACHED_SERVER);
$result=$dolmemcache->addServer($tmparray[0], $tmparray[1]?$tmparray[1]:11211);
if (! $result) return -1;
}
$memoryid=session_name().'_'.$memoryid;
//$dolmemcache->setOption(Memcached::OPT_COMPRESSION, false);
$dolmemcache->add($memoryid, $data); // This fails if key already exists
$rescode=$dolmemcache->getResultCode();
if ($rescode == 0)
{
return count($data);
}
else
{
return -$rescode;
}
}
elseif (! empty($conf->memcached->enabled) && class_exists('Memcache'))
{
global $dolmemcache;
if (empty($dolmemcache) || ! is_object($dolmemcache))
{
$dolmemcache=new Memcache();
$tmparray=explode(':', $conf->global->MEMCACHED_SERVER);
$result=$dolmemcache->addServer($tmparray[0], $tmparray[1]?$tmparray[1]:11211);
if (! $result) return -1;
}
$memoryid=session_name().'_'.$memoryid;
//$dolmemcache->setOption(Memcached::OPT_COMPRESSION, false);
$result=$dolmemcache->add($memoryid, $data); // This fails if key already exists
if ($result)
{
return count($data);
}
else
{
return -1;
}
}
// Using shmop
elseif (isset($conf->global->MAIN_OPTIMIZE_SPEED) && ($conf->global->MAIN_OPTIMIZE_SPEED & 0x02))
{
$result=dol_setshmop($memoryid, $data);
}
return $result;
}
/**
* Read a memory area shared by all users, all sessions on server
*
* @param string $memoryid Memory id of shared area
* @return int <0 if KO, data if OK
*/
function dol_getcache($memoryid)
{
global $conf;
// Using a memcached server
if (! empty($conf->memcached->enabled) && class_exists('Memcached'))
{
global $m;
if (empty($m) || ! is_object($m))
{
$m=new Memcached();
$tmparray=explode(':', $conf->global->MEMCACHED_SERVER);
$result=$m->addServer($tmparray[0], $tmparray[1]?$tmparray[1]:11211);
if (! $result) return -1;
}
$memoryid=session_name().'_'.$memoryid;
//$m->setOption(Memcached::OPT_COMPRESSION, false);
//print "Get memoryid=".$memoryid;
$data=$m->get($memoryid);
$rescode=$m->getResultCode();
//print "memoryid=".$memoryid." - rescode=".$rescode." - data=".count($data)."\n<br>";
//var_dump($data);
if ($rescode == 0)
{
return $data;
}
else
{
return -$rescode;
}
}
elseif (! empty($conf->memcached->enabled) && class_exists('Memcache'))
{
global $m;
if (empty($m) || ! is_object($m))
{
$m=new Memcache();
$tmparray=explode(':', $conf->global->MEMCACHED_SERVER);
$result=$m->addServer($tmparray[0], $tmparray[1]?$tmparray[1]:11211);
if (! $result) return -1;
}
$memoryid=session_name().'_'.$memoryid;
//$m->setOption(Memcached::OPT_COMPRESSION, false);
$data=$m->get($memoryid);
//print "memoryid=".$memoryid." - rescode=".$rescode." - data=".count($data)."\n<br>";
//var_dump($data);
if ($data)
{
return $data;
}
else
{
return -1;
}
}
// Using shmop
elseif (isset($conf->global->MAIN_OPTIMIZE_SPEED) && ($conf->global->MAIN_OPTIMIZE_SPEED & 0x02))
{
$data=dol_getshmop($memoryid);
return $data;
}
return 0;
}
/**
* Return shared memory address used to store dataset with key memoryid
*
* @param string $memoryid Memory id of shared area ('main', 'agenda', ...)
* @return int <0 if KO, Memoy address of shared memory for key
*/
function dol_getshmopaddress($memoryid)
{
global $shmkeys,$shmoffset;
if (empty($shmkeys[$memoryid])) return 0;
return $shmkeys[$memoryid]+$shmoffset;
}
/**
* Return list of contents of all memory area shared
*
* @return array
*/
function dol_listshmop()
{
global $shmkeys,$shmoffset;
$resarray=array();
foreach($shmkeys as $key => $val)
{
$result=dol_getshmop($key);
if (! is_numeric($result) || $result > 0) $resarray[$key]=$result;
}
return $resarray;
}
/**
* Save data into a memory area shared by all users, all sessions on server
*
* @param int $memoryid Memory id of shared area ('main', 'agenda', ...)
* @param string $data Data to save
* @return int <0 if KO, Nb of bytes written if OK
*/
function dol_setshmop($memoryid, $data)
{
global $shmkeys,$shmoffset;
//print 'dol_setshmop memoryid='.$memoryid."<br>\n";
if (empty($shmkeys[$memoryid]) || ! function_exists("shmop_write")) return 0;
$shmkey=dol_getshmopaddress($memoryid);
$newdata=serialize($data);
$size=strlen($newdata);
//print 'dol_setshmop memoryid='.$memoryid." shmkey=".$shmkey." newdata=".$size."bytes<br>\n";
$handle=shmop_open($shmkey, 'c', 0644, 6+$size);
if ($handle)
{
$shm_bytes_written1=shmop_write($handle, str_pad($size, 6), 0);
$shm_bytes_written2=shmop_write($handle, $newdata, 6);
if (($shm_bytes_written1 + $shm_bytes_written2) != (6+dol_strlen($newdata)))
{
print "Couldn't write the entire length of data\n";
}
shmop_close($handle);
return ($shm_bytes_written1+$shm_bytes_written2);
}
else
{
print 'Error in shmop_open for memoryid='.$memoryid.' shmkey='.$shmkey.' 6+size=6+'.$size;
return -1;
}
}
/**
* Read a memory area shared by all users, all sessions on server
*
* @param string $memoryid Memory id of shared area ('main', 'agenda', ...)
* @return int <0 if KO, data if OK
*/
function dol_getshmop($memoryid)
{
global $shmkeys,$shmoffset;
if (empty($shmkeys[$memoryid]) || ! function_exists("shmop_open")) return 0;
$shmkey=dol_getshmopaddress($memoryid);
//print 'dol_getshmop memoryid='.$memoryid." shmkey=".$shmkey."<br>\n";
$handle=@shmop_open($shmkey, 'a', 0, 0);
if ($handle)
{
$size=trim(shmop_read($handle, 0, 6));
if ($size) $data=unserialize(shmop_read($handle, 6, $size));
else return -1;
shmop_close($handle);
}
else
{
return -2;
}
return $data;
}