#include <XrdThrottle.hh>

Inheritance diagram for XrdThrottle::File:

Collaboration diagram for XrdThrottle::File:

[legend]

Public Member Functions
virtual int	open (const char fileName, XrdSfsFileOpenMode openMode, mode_t createMode, const XrdSecEntity client, const char *opaque=0)

virtual int	close ()

virtual int	checkpoint (cpAct act, struct iov *range=0, int n=0)

virtual int	fctl (const int cmd, const char *args, XrdOucErrInfo &out_error)

virtual const char *	FName ()

virtual int	getMmap (void **Addr, off_t &Size)

virtual XrdSfsXferSize	pgRead (XrdSfsFileOffset offset, char buffer, XrdSfsXferSize rdlen, uint32_t csvec, uint64_t opts=0)

virtual XrdSfsXferSize	pgRead (XrdSfsAio *aioparm, uint64_t opts=0)

virtual XrdSfsXferSize	pgWrite (XrdSfsFileOffset offset, char buffer, XrdSfsXferSize rdlen, uint32_t csvec, uint64_t opts=0)

virtual XrdSfsXferSize	pgWrite (XrdSfsAio *aioparm, uint64_t opts=0)

virtual int	read (XrdSfsFileOffset fileOffset, XrdSfsXferSize amount)

virtual XrdSfsXferSize	read (XrdSfsFileOffset fileOffset, char *buffer, XrdSfsXferSize buffer_size)

virtual int	read (XrdSfsAio *aioparm)

virtual XrdSfsXferSize	write (XrdSfsFileOffset fileOffset, const char *buffer, XrdSfsXferSize buffer_size)

virtual int	write (XrdSfsAio *aioparm)

virtual int	sync ()

virtual int	sync (XrdSfsAio *aiop)

virtual int	stat (struct stat *buf)

virtual int	truncate (XrdSfsFileOffset fileOffset)

virtual int	getCXinfo (char cxtype[4], int &cxrsz)

virtual int	SendData (XrdSfsDio *sfDio, XrdSfsFileOffset offset, XrdSfsXferSize size)

virtual int	fctl (const int cmd, const char *args, XrdOucErrInfo &eInfo)=0

virtual int	fctl (const int cmd, int alen, const char args, const XrdSecEntity client=0)

Public Member Functions inherited from XrdSfsFile
virtual int	fctl (const int cmd, int alen, const char args, const XrdSecEntity client=0)

virtual XrdSfsXferSize	readv (XrdOucIOVec *readV, int rdvCnt)

virtual XrdSfsXferSize	writev (XrdOucIOVec *writeV, int wdvCnt)

virtual void	setXio (XrdSfsXio *xioP)

	XrdSfsFile (const char *user=0, int MonID=0)

	XrdSfsFile (XrdSfsFile &wrapF)

	XrdSfsFile (XrdOucErrInfo &eInfo)

virtual	~XrdSfsFile ()
	Destructor. More...

Private Member Functions
	File (const char *, unique_sfs_ptr, XrdThrottleManager &, XrdSysError &)

virtual	~File ()

Private Attributes
unique_sfs_ptr	m_sfs

int	m_uid

std::string	m_loadshed

std::string	m_user

XrdThrottleManager &	m_throttle

XrdSysError &	m_eroute

Friends
class	FileSystem

Additional Inherited Members
Public Types inherited from XrdSfsFile
enum	cpAct { cpCreate =0, cpDelete, cpRestore }

Public Attributes inherited from XrdSfsFile
XrdOucErrInfo &	error

Static Public Attributes inherited from XrdSfsFile
static const uint64_t	Verify = 0x8000000000000000ULL
	Options for pgRead() and pgWrite() as noted below. More...

static const uint64_t	NetOrder = 0x4000000000000000ULL
	all: bytes in/out in net byte order More...

Constructor & Destructor Documentation

◆ File()

XrdThrottle::File::File	(	const char *	,
		unique_sfs_ptr	,
		XrdThrottleManager &	,
		XrdSysError &
	)

private

◆ ~File()

virtual XrdThrottle::File::~File ( )

privatevirtual

Member Function Documentation

◆ checkpoint()

virtual int XrdThrottle::File::checkpoint	(	cpAct	act,
		struct iov *	range = `0`,
		int	n = `0`
	)

virtual

Reimplemented from XrdSfsFile.

◆ close()

virtual int XrdThrottle::File::close ( )

virtual

Close the file.

Returns: One of SFS_OK or SFS_ERROR.

Implements XrdSfsFile.

◆ fctl() [1/3]

virtual int XrdSfsFile::fctl

Execute a special operation on the file (version 1)

Parameters

cmd	- The operation to be performed (see below). SFS_FCTL_GETFD Return file descriptor if possible SFS_FCTL_STATV Reserved for future use.
args	- specific arguments to cmd SFS_FCTL_GETFD Set to zero.
eInfo	- The object where error info or results are to be returned. This is legacy and the error onject may be used as well.

Returns: If an error occurs or the operation is not support, SFS_ERROR should be returned with error.code set to errno. Otherwise, SFS_FCTL_GETFD error.code holds the real file descriptor number If the value is negative, sendfile() is not used. If the value is SFS_SFIO_FDVAL then the SendData() method is used for future read requests.

◆ fctl() [2/3]

virtual int XrdThrottle::File::fctl	(	const int	cmd,
		const char *	args,
		XrdOucErrInfo &	eInfo
	)

virtual

Execute a special operation on the file (version 1)

Parameters

cmd	- The operation to be performed (see below). SFS_FCTL_GETFD Return file descriptor if possible SFS_FCTL_STATV Reserved for future use.
args	- specific arguments to cmd SFS_FCTL_GETFD Set to zero.
eInfo	- The object where error info or results are to be returned. This is legacy and the error onject may be used as well.

Returns: If an error occurs or the operation is not support, SFS_ERROR should be returned with error.code set to errno. Otherwise, SFS_FCTL_GETFD error.code holds the real file descriptor number If the value is negative, sendfile() is not used. If the value is SFS_SFIO_FDVAL then the SendData() method is used for future read requests.

Implements XrdSfsFile.

◆ fctl() [3/3]

virtual int XrdSfsFile::fctl

Execute a special operation on the file (version 2)

Parameters

cmd	- The operation to be performed: SFS_FCTL_SPEC1 Perform implementation defined action
alen	- Length of data pointed to by args.
args	- Data sent with request, zero if alen is zero.
client	- Client's identify (see common description).

Returns: SFS_OK a null response is sent.; SFS_DATA error.code length of the data to be sent. error.message contains the data to be sent. o/w one of SFS_ERROR, SFS_REDIRECT, or SFS_STALL.

◆ FName()

virtual const char* XrdThrottle::File::FName ( )

virtual

Get the file path.

Returns: Null terminated string of the path used in open().

Implements XrdSfsFile.

◆ getCXinfo()

virtual int XrdThrottle::File::getCXinfo	(	char	cxtype[4],
		int &	cxrsz
	)

virtual

Get compression information for the file.

Parameters

cxtype	- Place where the compression algorithm name is to be placed
cxrsz	- Place where the compression page size is to be returned

Returns: One of the valid SFS return codes described above. If the file is not compressed or an error is returned, cxrsz must be set to 0.

Implements XrdSfsFile.

◆ getMmap()

virtual int XrdThrottle::File::getMmap	(	void **	Addr,
		off_t &	Size
	)

virtual

Get file's memory mapping if one exists (memory mapped files only).

Parameters

addr	- Place where the starting memory address is returned.
size	- Place where the file's size is returned.

Returns: SFS_OK when the file is memory mapped or any other code otherwise.

Implements XrdSfsFile.

◆ open()

virtual int XrdThrottle::File::open	(	const char *	fileName,
		XrdSfsFileOpenMode	openMode,
		mode_t	createMode,
		const XrdSecEntity *	client,
		const char *	opaque = `0`
	)

virtual

Open a file.

Parameters

path	- Pointer to the path of the file to be opened.
oMode	- Flags indicating how the open is to be handled. SFS_O_CREAT create the file SFS_O_MKPTH Make directory path if missing SFS_O_NOWAIT do not impose operational delays SFS_O_NOTPC do not allow TPC operation SFS_O_POSC persist only on successful close SFS_O_RAWIO allow client-side decompression SFS_O_RDONLY open read/only SFS_O_RDWR open read/write SFS_O_REPLICA Open for replication SFS_O_RESET Reset any cached information SFS_O_TRUNC truncate existing file to zero length SFS_O_WRONLY open write/only
cMode	- The file's mode if it will be created.
client	- Client's identify (see common description).
opaque	- path's CGI information (see common description).

Returns: One of SFS_OK, SFS_ERROR, SFS_REDIRECT, SFS_STALL, or SFS_STARTED

Implements XrdSfsFile.

◆ pgRead() [1/2]

virtual XrdSfsXferSize XrdThrottle::File::pgRead	(	XrdSfsAio *	aioparm,
		uint64_t	opts = `0`
	)

virtual

Read file pages and checksums using asynchronous I/O.

Parameters

aioparm	- Pointer to async I/O object controlling the I/O.
opts	- Processing options (see above).

Returns: SFS_OK Request accepted and will be scheduled.; SFS_ERROR File could not be read, error holds the reason.

Reimplemented from XrdSfsFile.

◆ pgRead() [2/2]

virtual XrdSfsXferSize XrdThrottle::File::pgRead	(	XrdSfsFileOffset	offset,
		char *	buffer,
		XrdSfsXferSize	rdlen,
		uint32_t *	csvec,
		uint64_t	opts = `0`
	)

virtual

Read file pages into a buffer and return corresponding checksums.

Parameters

offset	- The offset where the read is to start. It must be page aligned.
buffer	- pointer to buffer where the bytes are to be placed.
rdlen	- The number of bytes to read. The amount must be an integral number of XrdSfsPage::Size bytes.
csvec	- A vector of entries to be filled with the cooresponding CRC32C checksum for each page. It must be size to rdlen/XrdSys::PageSize + (rdlenXrdSys::PageSize != 0)
opts	- Processing options (see above).

Returns: >= 0 The number of bytes that placed in buffer.; SFS_ERROR File could not be read, error holds the reason.

Reimplemented from XrdSfsFile.

◆ pgWrite() [1/2]

virtual XrdSfsXferSize XrdThrottle::File::pgWrite	(	XrdSfsAio *	aioparm,
		uint64_t	opts = `0`
	)

virtual

Write file pages and checksums using asynchronous I/O.

Parameters

aioparm	- Pointer to async I/O object controlling the I/O.
opts	- Processing options (see above).

Returns: SFS_OK Request accepted and will be scheduled.; SFS_ERROR File could not be read, error holds the reason.

Reimplemented from XrdSfsFile.

◆ pgWrite() [2/2]

virtual XrdSfsXferSize XrdThrottle::File::pgWrite	(	XrdSfsFileOffset	offset,
		char *	buffer,
		XrdSfsXferSize	wrlen,
		uint32_t *	csvec,
		uint64_t	opts = `0`
	)

virtual

Write file pages into a file with corresponding checksums.

Parameters

offset	- The offset where the write is to start. It must be page aligned.
buffer	- pointer to buffer containing the bytes to write.
wrlen	- The number of bytes to write. If amount is not an integral number of XrdSys::PageSize bytes, then this must be the last write to the file at or above the offset.
csvec	- A vector which contains the corresponding CRC32 checksum for each page. It must be size to wrlen/XrdSys::PageSize + (wrlenXrdSys::PageSize != 0)
opts	- Processing options (see above).

Returns: >= 0 The number of bytes written.; SFS_ERROR File could not be read, error holds the reason.

Reimplemented from XrdSfsFile.

◆ read() [1/3]

virtual int XrdThrottle::File::read ( XrdSfsAio * aioparm )

virtual

Read file bytes using asynchronous I/O.

Parameters

aioparm - Pointer to async I/O object controlling the I/O.

Returns: SFS_OK Request accepted and will be scheduled.; SFS_ERROR File could not be read, error holds the reason.

Implements XrdSfsFile.

◆ read() [2/3]

virtual XrdSfsXferSize XrdThrottle::File::read	(	XrdSfsFileOffset	offset,
		char *	buffer,
		XrdSfsXferSize	size
	)

virtual

Read file bytes into a buffer.

Parameters

offset	- The offset where the read is to start.
buffer	- pointer to buffer where the bytes are to be placed.
size	- The number of bytes to read.

Returns: >= 0 The number of bytes that placed in buffer.; SFS_ERROR File could not be read, error holds the reason.

Implements XrdSfsFile.

◆ read() [3/3]

virtual int XrdThrottle::File::read	(	XrdSfsFileOffset	offset,
		XrdSfsXferSize	size
	)

virtual

Preread file blocks into the file system cache.

Parameters

offset	- The offset where the read is to start.
size	- The number of bytes to pre-read.

Returns: >= 0 The number of bytes that will be pre-read.; SFS_ERROR File could not be preread, error holds the reason.

Implements XrdSfsFile.

◆ SendData()

virtual int XrdThrottle::File::SendData	(	XrdSfsDio *	sfDio,
		XrdSfsFileOffset	offset,
		XrdSfsXferSize	size
	)

virtual

Send file bytes via a XrdSfsDio sendfile object to a client (optional).

Parameters

sfDio	- Pointer to the sendfile object for data transfer.
offset	- The offset where the read is to start.
size	- The number of bytes to read and send.

Returns: SFS_ERROR File not read, error object has reason.; SFS_OK Either data has been successfully sent via sfDio or no data has been sent and a normal read() should be issued.

Reimplemented from XrdSfsFile.

◆ stat()

virtual int XrdThrottle::File::stat ( struct stat * buf )

virtual

Return state information on the file.

Parameters

buf	- Pointer to the structure where info it to be returned.

Returns: One of SFS_OK, SFS_ERROR, SFS_REDIRECT, or SFS_STALL. When SFS_OK is returned, buf must hold stat information.

Implements XrdSfsFile.

◆ sync() [1/2]

virtual int XrdThrottle::File::sync ( )

virtual

Make sure all outstanding data is actually written to the file (sync).

Returns: One of SFS_OK, SFS_ERROR, SFS_REDIRECT, SFS_STALL, or SFS_STARTED

Implements XrdSfsFile.

◆ sync() [2/2]

virtual int XrdThrottle::File::sync ( XrdSfsAio * aiop )

virtual

Make sure all outstanding data is actually written to the file (async).

Returns: SFS_OK Request accepted and will be scheduled.; SFS_ERROR Request could not be accepted, return error has reason.

Implements XrdSfsFile.

◆ truncate()

virtual int XrdThrottle::File::truncate ( XrdSfsFileOffset fsize )

virtual

Truncate the file.

Parameters

fsize - The size that the file is to have.

Returns: One of SFS_OK, SFS_ERROR, SFS_REDIRECT, or SFS_STALL

Implements XrdSfsFile.

◆ write() [1/2]

virtual int XrdThrottle::File::write ( XrdSfsAio * aioparm )

virtual

Write file bytes using asynchronous I/O.

Parameters

aioparm - Pointer to async I/O object controlling the I/O.

Returns: 0 Request accepted and will be scheduled.; !0 Request not accepted, returned value is errno.

Implements XrdSfsFile.

◆ write() [2/2]

virtual XrdSfsXferSize XrdThrottle::File::write	(	XrdSfsFileOffset	offset,
		const char *	buffer,
		XrdSfsXferSize	size
	)

virtual

Write file bytes from a buffer.

Parameters

offset	- The offset where the write is to start.
buffer	- pointer to buffer where the bytes reside.
size	- The number of bytes to write.

Returns: >= 0 The number of bytes that were written.; SFS_ERROR File could not be written, error holds the reason.

Implements XrdSfsFile.

Friends And Related Function Documentation

◆ FileSystem

friend class FileSystem

friend

Member Data Documentation

◆ m_eroute

XrdSysError& XrdThrottle::File::m_eroute

private

◆ m_loadshed

std::string XrdThrottle::File::m_loadshed

private

◆ m_sfs

unique_sfs_ptr XrdThrottle::File::m_sfs

private

◆ m_throttle

XrdThrottleManager& XrdThrottle::File::m_throttle

private

◆ m_uid

int XrdThrottle::File::m_uid

private

◆ m_user

std::string XrdThrottle::File::m_user

private

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

XrdThrottle.hh

Public Member Functions

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Constructor & Destructor Documentation

◆ File()

◆ ~File()

Member Function Documentation

◆ checkpoint()

◆ close()

◆ fctl() [1/3]

◆ fctl() [2/3]

◆ fctl() [3/3]

◆ FName()

◆ getCXinfo()

◆ getMmap()

◆ open()

◆ pgRead() [1/2]

◆ pgRead() [2/2]

◆ pgWrite() [1/2]

◆ pgWrite() [2/2]

◆ read() [1/3]

◆ read() [2/3]

◆ read() [3/3]

◆ SendData()

◆ stat()

◆ sync() [1/2]

◆ sync() [2/2]

◆ truncate()

◆ write() [1/2]

◆ write() [2/2]

Friends And Related Function Documentation

◆ FileSystem

Member Data Documentation

◆ m_eroute

◆ m_loadshed

◆ m_sfs

◆ m_throttle

◆ m_uid

◆ m_user