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General: Reduce cell caching overhead using dirty flag to ensure that cells are only rewritten to the cache if they have actually been changed 

git-svn-id: https://phpexcel.svn.codeplex.com/svn/trunk@72227 2327b42d-5241-43d6-9e2a-de5ac946f064
This commit is contained in:
Mark Baker 2011-04-25 14:25:53 +00:00
parent ff4daef39c
commit 5672f25ebf
9 changed files with 76 additions and 39 deletions
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12
Classes/PHPExcel/CachedObjectStorage/APC.php
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@ -41,11 +41,14 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
private function _storeData() {
$this->_currentObject->detach();
if ($this->_currentCellIsDirty) {
$this->_currentObject->detach();
if (!apc_store($this->_cachePrefix.$this->_currentObjectID.'.cache',serialize($this->_currentObject),$this->_cacheTime)) {
$this->__destruct();
throw new Exception('Failed to store cell '.$cellID.' in APC');
if (!apc_store($this->_cachePrefix.$this->_currentObjectID.'.cache',serialize($this->_currentObject),$this->_cacheTime)) {
$this->__destruct();
throw new Exception('Failed to store cell '.$cellID.' in APC');
}
$this->_currentCellIsDirty = false;
}
$this->_currentObjectID = $this->_currentObject = null;
} // function _storeData()
@ -67,6 +70,7 @@ class PHPExcel_CachedObjectStorage_APC extends PHPExcel_CachedObjectStorage_Cach
$this->_currentObjectID = $pCoord;
$this->_currentObject = $cell;
$this->_currentCellIsDirty = true;
return $cell;
} // function addCacheData()

8
Classes/PHPExcel/CachedObjectStorage/CacheBase.php
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@ -57,6 +57,13 @@ class PHPExcel_CachedObjectStorage_CacheBase {
protected $_currentObjectID = null;
/**
* Flag indicating whether the currently active Cell requires saving
*
* @var boolean
*/
protected $_currentCellIsDirty = true;
/**
* An array of cells or cell pointers for the worksheet cells held in this cache,
* and indexed by their coordinate address within the worksheet
@ -118,6 +125,7 @@ class PHPExcel_CachedObjectStorage_CacheBase {
$this->_cellCache[$pCoord]->detach();
unset($this->_cellCache[$pCoord]);
}
$this->_currentCellIsDirty = false;
} // function deleteCacheData()

18
Classes/PHPExcel/CachedObjectStorage/DiscISAM.php
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@ -40,14 +40,17 @@ class PHPExcel_CachedObjectStorage_DiscISAM extends PHPExcel_CachedObjectStorage
private function _storeData() {
$this->_currentObject->detach();
if ($this->_currentCellIsDirty) {
$this->_currentObject->detach();
fseek($this->_fileHandle,0,SEEK_END);
$offset = ftell($this->_fileHandle);
fwrite($this->_fileHandle, serialize($this->_currentObject));
$this->_cellCache[$this->_currentObjectID] = array('ptr' => $offset,
'sz' => ftell($this->_fileHandle) - $offset
);
fseek($this->_fileHandle,0,SEEK_END);
$offset = ftell($this->_fileHandle);
fwrite($this->_fileHandle, serialize($this->_currentObject));
$this->_cellCache[$this->_currentObjectID] = array('ptr' => $offset,
'sz' => ftell($this->_fileHandle) - $offset
);
$this->_currentCellIsDirty = false;
}
$this->_currentObjectID = $this->_currentObject = null;
} // function _storeData()
@ -67,6 +70,7 @@ class PHPExcel_CachedObjectStorage_DiscISAM extends PHPExcel_CachedObjectStorage
$this->_currentObjectID = $pCoord;
$this->_currentObject = $cell;
$this->_currentCellIsDirty = true;
return $cell;
} // function addCacheData()

16
Classes/PHPExcel/CachedObjectStorage/Memcache.php
View File

@ -43,14 +43,17 @@ class PHPExcel_CachedObjectStorage_Memcache extends PHPExcel_CachedObjectStorage
private function _storeData() {
$this->_currentObject->detach();
if ($this->_currentCellIsDirty) {
$this->_currentObject->detach();
$obj = serialize($this->_currentObject);
if (!$this->_memcache->replace($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
if (!$this->_memcache->add($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
$this->__destruct();
throw new Exception('Failed to store cell '.$cellID.' in MemCache');
$obj = serialize($this->_currentObject);
if (!$this->_memcache->replace($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
if (!$this->_memcache->add($this->_cachePrefix.$this->_currentObjectID.'.cache',$obj,NULL,$this->_cacheTime)) {
$this->__destruct();
throw new Exception('Failed to store cell '.$cellID.' in MemCache');
}
}
$this->_currentCellIsDirty = false;
}
$this->_currentObjectID = $this->_currentObject = null;
} // function _storeData()
@ -72,6 +75,7 @@ class PHPExcel_CachedObjectStorage_Memcache extends PHPExcel_CachedObjectStorage
$this->_currentObjectID = $pCoord;
$this->_currentObject = $cell;
$this->_currentCellIsDirty = true;
return $cell;
} // function addCacheData()

8
Classes/PHPExcel/CachedObjectStorage/MemoryGZip.php
View File

@ -36,9 +36,12 @@
class PHPExcel_CachedObjectStorage_MemoryGZip extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
private function _storeData() {
$this->_currentObject->detach();
if ($this->_currentCellIsDirty) {
$this->_currentObject->detach();
$this->_cellCache[$this->_currentObjectID] = gzdeflate(serialize($this->_currentObject));
$this->_cellCache[$this->_currentObjectID] = gzdeflate(serialize($this->_currentObject));
$this->_currentCellIsDirty = false;
}
$this->_currentObjectID = $this->_currentObject = null;
} // function _storeData()
@ -58,6 +61,7 @@ class PHPExcel_CachedObjectStorage_MemoryGZip extends PHPExcel_CachedObjectStora
$this->_currentObjectID = $pCoord;
$this->_currentObject = $cell;
$this->_currentCellIsDirty = true;
return $cell;
} // function addCacheData()

8
Classes/PHPExcel/CachedObjectStorage/MemorySerialized.php
View File

@ -36,9 +36,12 @@
class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjectStorage_CacheBase implements PHPExcel_CachedObjectStorage_ICache {
private function _storeData() {
$this->_currentObject->detach();
if ($this->_currentCellIsDirty) {
$this->_currentObject->detach();
$this->_cellCache[$this->_currentObjectID] = serialize($this->_currentObject);
$this->_cellCache[$this->_currentObjectID] = serialize($this->_currentObject);
$this->_currentCellIsDirty = false;
}
$this->_currentObjectID = $this->_currentObject = null;
} // function _storeData()
@ -58,6 +61,7 @@ class PHPExcel_CachedObjectStorage_MemorySerialized extends PHPExcel_CachedObjec
$this->_currentObjectID = $pCoord;
$this->_currentObject = $cell;
$this->_currentCellIsDirty = true;
return $cell;
} // function addCacheData()

18
Classes/PHPExcel/CachedObjectStorage/PHPTemp.php
View File

@ -41,14 +41,17 @@ class PHPExcel_CachedObjectStorage_PHPTemp extends PHPExcel_CachedObjectStorage_
private $_memoryCacheSize = null;
private function _storeData() {
$this->_currentObject->detach();
if ($this->_currentCellIsDirty) {
$this->_currentObject->detach();
fseek($this->_fileHandle,0,SEEK_END);
$offset = ftell($this->_fileHandle);
fwrite($this->_fileHandle, serialize($this->_currentObject));
$this->_cellCache[$this->_currentObjectID] = array('ptr' => $offset,
'sz' => ftell($this->_fileHandle) - $offset
);
fseek($this->_fileHandle,0,SEEK_END);
$offset = ftell($this->_fileHandle);
fwrite($this->_fileHandle, serialize($this->_currentObject));
$this->_cellCache[$this->_currentObjectID] = array('ptr' => $offset,
'sz' => ftell($this->_fileHandle) - $offset
);
$this->_currentCellIsDirty = false;
}
$this->_currentObjectID = $this->_currentObject = null;
} // function _storeData()
@ -68,6 +71,7 @@ class PHPExcel_CachedObjectStorage_PHPTemp extends PHPExcel_CachedObjectStorage_
$this->_currentObjectID = $pCoord;
$this->_currentObject = $cell;
$this->_currentCellIsDirty = true;
return $cell;
} // function addCacheData()

26
Classes/PHPExcel/CachedObjectStorage/Wincache.php
View File

@ -41,19 +41,22 @@ class PHPExcel_CachedObjectStorage_Wincache extends PHPExcel_CachedObjectStorage
private function _storeData() {
$this->_currentObject->detach();
if ($this->_currentCellIsDirty) {
$this->_currentObject->detach();
$obj = serialize($this->_currentObject);
if (wincache_ucache_exists($this->_cachePrefix.$this->_currentObjectID.'.cache')) {
if (!wincache_ucache_set($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
$this->__destruct();
throw new Exception('Failed to store cell '.$cellID.' in WinCache');
}
} else {
if (!wincache_ucache_add($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
$this->__destruct();
throw new Exception('Failed to store cell '.$cellID.' in WinCache');
$obj = serialize($this->_currentObject);
if (wincache_ucache_exists($this->_cachePrefix.$this->_currentObjectID.'.cache')) {
if (!wincache_ucache_set($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
$this->__destruct();
throw new Exception('Failed to store cell '.$cellID.' in WinCache');
}
} else {
if (!wincache_ucache_add($this->_cachePrefix.$this->_currentObjectID.'.cache', $obj, $this->_cacheTime)) {
$this->__destruct();
throw new Exception('Failed to store cell '.$cellID.' in WinCache');
}
}
$this->_currentCellIsDirty = false;
}
$this->_currentObjectID = $this->_currentObject = null;
@ -76,6 +79,7 @@ class PHPExcel_CachedObjectStorage_Wincache extends PHPExcel_CachedObjectStorage
$this->_currentObjectID = $pCoord;
$this->_currentObject = $cell;
$this->_currentCellIsDirty = true;
return $cell;
} // function addCacheData()

1
changelog.txt
View File

@ -25,6 +25,7 @@
Fixed in SVN:
- General: (MBaker) Fix to build to ensure that Examples are included with the documentation
- General: (MBaker) Reduce cell caching overhead using dirty flag to ensure that cells are only rewritten to the cache if they have actually been changed
- Bugfix: (MBaker) Work item 15459 - Invalid cell coordinate in Autofilter for Excel2007 Writer
- Bugfix: (MBaker) Work item 15518 - PCLZip library issue
- Bugfix: (MBaker) Work item 15537 - Excel2007 Reader canRead function bug