XrdFileCache::Cache Class Reference
Attaches/creates and detaches/deletes cache-io objects for disk based cache. More...
#include <XrdFileCache.hh>
Classes | |
| struct | WriteQ |
| struct | WriteTask |
Public Member Functions | |
| Cache (XrdOucCacheStats &) | |
| Constructor. | |
| virtual XrdOucCacheIO * | Attach (XrdOucCacheIO *, int Options=0) |
| Obtain a new IO object that fronts existing XrdOucCacheIO. | |
| virtual int | isAttached () |
| Number of cache-io objects atteched through this cache. | |
| virtual XrdOucCache * | Create (XrdOucCache::Parms &, XrdOucCacheIO::aprParms *) |
| Unused abstract method. Plugin instantiation role is given to the Factory class. | |
Static Public Member Functions | |
| static void | AddWriteTask (Prefetch *p, int ramBlockidx, size_t size, bool fromRead) |
| Add downloaded block in write queue. | |
| static bool | HaveFreeWritingSlots () |
| Check write queue size is not over limit. | |
| static void | RemoveWriteQEntriesFor (Prefetch *p) |
| Remove blocks from write queue which belong to given prefetch. This method is used at the time of Prefetch destruction. | |
| static void | ProcessWriteTasks () |
| Separate task which writes blocks from ram to disk. | |
Private Member Functions | |
| void | Detach (XrdOucCacheIO *) |
| Decrease attached count. Called from IO::Detach(). | |
| bool | getFilePathFromURL (const char *url, std::string &res) const |
| Transfor URL to path on local disk. | |
| XrdCl::Log * | clLog () const |
| Short log alias. | |
Private Attributes | |
| XrdSysMutex | m_io_mutex |
| central lock for this class | |
| unsigned int | m_attached |
| number of attached IO objects | |
| XrdOucCacheStats & | m_stats |
| global cache usage statistics | |
Static Private Attributes | |
| static WriteQ | s_writeQ |
Friends | |
| class | IOEntireFile |
| class | IOFileBlock |
Detailed Description
Attaches/creates and detaches/deletes cache-io objects for disk based cache.
Constructor & Destructor Documentation
| XrdFileCache::Cache::Cache | ( | XrdOucCacheStats & | ) |
Constructor.
Member Function Documentation
| static void XrdFileCache::Cache::AddWriteTask | ( | Prefetch * | p, | |
| int | ramBlockidx, | |||
| size_t | size, | |||
| bool | fromRead | |||
| ) | [static] |
Add downloaded block in write queue.
| virtual XrdOucCacheIO* XrdFileCache::Cache::Attach | ( | XrdOucCacheIO * | , | |
| int | Options = 0 | |||
| ) | [virtual] |
Obtain a new IO object that fronts existing XrdOucCacheIO.
Implements XrdOucCache.
| XrdCl::Log* XrdFileCache::Cache::clLog | ( | ) | const [inline, private] |
Short log alias.
References XrdCl::DefaultEnv::GetLog().
| virtual XrdOucCache* XrdFileCache::Cache::Create | ( | XrdOucCache::Parms & | , | |
| XrdOucCacheIO::aprParms * | ||||
| ) | [inline, virtual] |
Unused abstract method. Plugin instantiation role is given to the Factory class.
Implements XrdOucCache.
| void XrdFileCache::Cache::Detach | ( | XrdOucCacheIO * | ) | [private] |
Decrease attached count. Called from IO::Detach().
| bool XrdFileCache::Cache::getFilePathFromURL | ( | const char * | url, | |
| std::string & | res | |||
| ) | const [private] |
Transfor URL to path on local disk.
| static bool XrdFileCache::Cache::HaveFreeWritingSlots | ( | ) | [static] |
Check write queue size is not over limit.
| virtual int XrdFileCache::Cache::isAttached | ( | ) | [virtual] |
Number of cache-io objects atteched through this cache.
Reimplemented from XrdOucCache.
| static void XrdFileCache::Cache::ProcessWriteTasks | ( | ) | [static] |
Separate task which writes blocks from ram to disk.
| static void XrdFileCache::Cache::RemoveWriteQEntriesFor | ( | Prefetch * | p | ) | [static] |
Remove blocks from write queue which belong to given prefetch. This method is used at the time of Prefetch destruction.
Friends And Related Function Documentation
friend class IOEntireFile [friend] |
friend class IOFileBlock [friend] |
Member Data Documentation
unsigned int XrdFileCache::Cache::m_attached [private] |
number of attached IO objects
XrdSysMutex XrdFileCache::Cache::m_io_mutex [private] |
central lock for this class
XrdOucCacheStats& XrdFileCache::Cache::m_stats [private] |
global cache usage statistics
WriteQ XrdFileCache::Cache::s_writeQ [static, private] |
The documentation for this class was generated from the following file:
