XrdPosixCache Class Reference

#include <XrdPosixCache.hh>

Collaboration diagram for XrdPosixCache:

Public Member Functions
	XrdPosixCache ()
	Constructor and destructor. More...
	~XrdPosixCache ()
int	CachePath (const char *url, char *buff, int blen)
int	CacheQuery (const char *url, bool hold=false)
int	Rename (const char *oldPath, const char *newPath)
int	Rmdir (const char *path)
int	Stat (const char *path, struct stat &sbuff)
void	Statistics (XrdOucCacheStats &Stats)
int	Truncate (const char *path, off_t size)
int	Unlink (const char *path)

Detailed Description

Definition at line 35 of file XrdPosixCache.hh.

Constructor & Destructor Documentation

XrdPosixCache()

XrdPosixCache::XrdPosixCache ( )

inline

Constructor and destructor.

Definition at line 138 of file XrdPosixCache.hh.

{}

~XrdPosixCache()

XrdPosixCache::~XrdPosixCache ( )

inline

Definition at line 139 of file XrdPosixCache.hh.

{}

Member Function Documentation

CachePath()

int XrdPosixCache::CachePath	(	const char *	url,
		char *	buff,
		int	blen
	)

Convert a logical path to the path of the corresonding entry in the cache.

Parameters

url	-> url of the directory or file to be converted.
buff	-> buffer to receive the result.
blen	The length of the buffer (should be at least 1024).

Returns

=0 Buffer holds the result.

<0 Conversion failed, the return value is -errno.

Definition at line 50 of file XrdPosixCache.cc.

{
   return theCache->LocalFilePath(url, buff, blen, XrdOucCache::ForPath);
}

References XrdOucCache::ForPath, XrdOucCache::LocalFilePath(), and XrdPosixGlobals::theCache.

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CacheQuery()

int XrdPosixCache::CacheQuery	(	const char *	url,
		bool	hold = false
	)

Check cache status of a file.

Parameters

url	-> url of the logical file to be checked in the cache.
hold	When true, the file purge time is extended to allow the file to be accessed before eligible for purging. When false (the default) only status information is returned.

Returns

>0 The file is fully cached.

=0 The file exists in the cache but is not fully cached.

<0 The file does not exist in the cache.

Definition at line 59 of file XrdPosixCache.cc.

{
 
   int rc = theCache->LocalFilePath(url, 0, 0,
                                    (hold ? XrdOucCache::ForAccess
                                          : XrdOucCache::ForInfo)
                                   );
   if (!rc) return 1;
   if (rc == -EREMOTE) return 0;
   return -1;
}

References XrdOucCache::ForAccess, XrdOucCache::ForInfo, XrdOucCache::LocalFilePath(), and XrdPosixGlobals::theCache.

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Rename()

int XrdPosixCache::Rename	(	const char *	oldPath,
		const char *	newPath
	)

Rename a file or directory in the cache.

Parameters

oldPath	-> filepath of existing directory or file.
newPath	-> filepath the directory or file is to have.

Returns

0 This method is currently not supported.

Definition at line 82 of file XrdPosixCache.cc.

                         {return theCache->Rename(oldPath, newPath);}

References XrdOucCache::Rename(), and XrdPosixGlobals::theCache.

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Rmdir()

int XrdPosixCache::Rmdir

(

const char *

path

)

Remove directory from the cache.

Parameters

path	-> filepath of directory to be removed

Returns

0 This method is currently not supported.

Definition at line 75 of file XrdPosixCache.cc.

                        {return theCache->Rmdir(path);}

References XrdOucCache::Rmdir(), and XrdPosixGlobals::theCache.

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Stat()

int XrdPosixCache::Stat	(	const char *	path,
		struct stat &	sbuff
	)

Rename a file or directory in the cache.

Parameters

path	-> filepath of existing directory or file. This is the actual path in the cache (see CachePath()).
sbuff	Reference to the stat structure to hold the information.

Returns

=0 The sbuff hold the information.

!0 The file or direcory does not exist in the cache.

Definition at line 89 of file XrdPosixCache.cc.

                       {return theCache->Stat(path, sbuff);}

References XrdOucCache::Stat(), and XrdPosixGlobals::theCache.

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Statistics()

void XrdPosixCache::Statistics

(

XrdOucCacheStats &

Stats

)

Rename a file or directory in the cache.

Parameters

Stats

Reference to the statistics object to be filled in.

Definition at line 96 of file XrdPosixCache.cc.

                        {return theCache->Statistics.Get(Stats);}

References XrdOucCacheStats::Get(), XrdOucCache::Statistics, XrdPosixGlobals::Stats, and XrdPosixGlobals::theCache.

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Truncate()

int XrdPosixCache::Truncate	(	const char *	path,
		off_t	size
	)

Truncate a file in the cache.

Parameters

path	-> filepath of file to be truncated.
size	The size in bytes the file should have.

Returns

0 This method is currently not supported.

Definition at line 103 of file XrdPosixCache.cc.

                           {return theCache->Truncate(path, size);}

References XrdPosixGlobals::theCache, and XrdOucCache::Truncate().

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Unlink()

int XrdPosixCache::Unlink

(

const char *

path

)

Remove a file from the cache.

Parameters

path	-> filepath of file to be removed.

Returns

=0 File was removed.

!0 File could not be removed, because of one of the below: -EBUSY - the file is in use. -EAGAIN - file is currently subject to internal processing. -errno - file was not removed, filesystem unlink() failed.

Definition at line 110 of file XrdPosixCache.cc.

                         {return theCache->Unlink(path);}

References XrdPosixGlobals::theCache, and XrdOucCache::Unlink().

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The documentation for this class was generated from the following files:

• XrdPosixCache.hh
• XrdPosixCache.cc