sion_internal_seek.h File Reference

#include "sion_const.h"
#include "sion_datatypes.h"
#include "sion_filedesc.h"

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Functions
int	_sion_seek_on_all_ranks_read (_sion_filedesc *sion_filedesc, int rank, int blocknr, sion_int64 posinblk)
	Function to set the file pointer to a new position, updates internal data structure. More...
int	_sion_seek_on_all_ranks_read_master (_sion_filedesc *sion_filedesc, int rank, int blocknr, sion_int64 posinblk)
	Function to set the file pointer to a new position, updates internal data structure. More...
int	_sion_seek_on_current_rank_read (_sion_filedesc *sion_filedesc, int rank, int blocknr, sion_int64 posinblk)
	Function to set the file pointer to a new position in the same rank, updates internal data structure. More...
int	_sion_seek_on_all_ranks_read_mapped (_sion_filedesc *sion_filedesc, int rank, int blocknr, sion_int64 posinblk)
	Function to set the file pointer to a new position, updates internal data structure. More...
int	_sion_seek_on_all_ranks_write (_sion_filedesc *sion_filedesc, int rank, int blocknr, sion_int64 posinblk)
	Function to set the file pointer to a new position, updates internal data structure. More...
int	_sion_seek_on_current_rank_write (_sion_filedesc *sion_filedesc, int rank, int blocknr, sion_int64 posinblk)
	Function to set the file pointer to a new position in the same rank, updates internal data structure. More...
int	_sion_seek_on_all_ranks_write_mapped (_sion_filedesc *sion_filedesc, int rank, int blocknr, sion_int64 posinblk)
	Function to set the file pointer to a new position, updates internal data structure. More...
int	_sion_seek_search_abs_pos (_sion_filedesc *sion_filedesc, sion_int64 abspos, int *newblocknr, sion_int64 *newposinblk)
	Find block and position inside block for absolute position abspos. More...
int	_sion_seek_search_end_pos (_sion_filedesc *sion_filedesc, sion_int64 posend, int *newblocknr, sion_int64 *newposinblk)
	Find block and position inside block position relative to end. More...

Function Documentation

_sion_seek_on_all_ranks_read()

int _sion_seek_on_all_ranks_read	(	_sion_filedesc *	sion_filedesc,
		int	rank,
		int	blocknr,
		sion_int64	posinblk
	)

Function to set the file pointer to a new position, updates internal data structure.

This function works on a SINGLE SION file

Parameters

[in,out]	sion_filedesc	sion data structure
[in]	rank	rank number of the process (SION_CURRENT_RANK to select the current rank)
[in]	blocknr	block number (SION_CURRENT_BLK to select the current block)
[in]	posinblk	position in the block (SION_CURRENT_POS to select the current position)

Return values

1	if file pointer can be moved to new position 0 otherwise

Definition at line 52 of file sion_internal_seek.c.

_sion_seek_on_all_ranks_read_mapped()

int _sion_seek_on_all_ranks_read_mapped	(	_sion_filedesc *	sion_filedesc_master,
		int	rank,
		int	blocknr,
		sion_int64	posinblk
	)

Function to set the file pointer to a new position, updates internal data structure.

This function works on a SINGLE SION file, Multi-files have to be handle in upper layer

Parameters

[in,out]	sion_filedesc_master	sion data structure
[in]	rank	rank number of the process (SION_CURRENT_RANK to select the current rank)
[in]	blocknr	block number (SION_CURRENT_BLK to select the current block)
[in]	posinblk	position in the block (SION_CURRENT_POS to select the current position)

Return values

1	if file pointer can be moved to new position 0 otherwise

Definition at line 389 of file sion_internal_seek.c.

_sion_seek_on_all_ranks_read_master()

int _sion_seek_on_all_ranks_read_master	(	_sion_filedesc *	sion_filedesc,
		int	rank,
		int	blocknr,
		sion_int64	posinblk
	)

Function to set the file pointer to a new position, updates internal data structure.

This function works on Multi-files

Parameters

[in,out]	sion_filedesc	sion data structure
[in]	rank	rank number of the process (SION_CURRENT_RANK to select the current rank)
[in]	blocknr	block number (SION_CURRENT_BLK to select the current block)
[in]	posinblk	position in the block (SION_CURRENT_POS to select the current position)

Return values

1	if file pointer can be moved to new position 0 otherwise

Definition at line 160 of file sion_internal_seek.c.

_sion_seek_on_all_ranks_write()

int _sion_seek_on_all_ranks_write	(	_sion_filedesc *	sion_filedesc,
		int	rank,
		int	blocknr,
		sion_int64	posinblk
	)

Function to set the file pointer to a new position, updates internal data structure.

This function works on a SINGLE SION file, Multi-files have to be handle in upper layer

Parameters

[in,out]	sion_filedesc	sion data structure
[in]	rank	rank number of the process (SION_CURRENT_RANK to select the current rank)
[in]	blocknr	block number (SION_CURRENT_BLK to select the current block)
[in]	posinblk	position in the block (SION_CURRENT_POS to select the current position)

Return values

1	if file pointer can be moved to new position 0 otherwise

Definition at line 537 of file sion_internal_seek.c.

_sion_seek_on_all_ranks_write_mapped()

int _sion_seek_on_all_ranks_write_mapped	(	_sion_filedesc *	sion_filedesc_master,
		int	rank,
		int	blocknr,
		sion_int64	posinblk
	)

Function to set the file pointer to a new position, updates internal data structure.

This function works on a SINGLE SION file, Multi-files have to be handle in upper layer

Parameters

[in,out]	sion_filedesc_master	sion data structure
[in]	rank	rank number of the process (SION_CURRENT_RANK to select the current rank)
[in]	blocknr	block number (SION_CURRENT_BLK to select the current block)
[in]	posinblk	position in the block (SION_CURRENT_POS to select the current position)

Return values

1	if file pointer can be moved to new position 0 otherwise

Definition at line 629 of file sion_internal_seek.c.

_sion_seek_on_current_rank_read()

int _sion_seek_on_current_rank_read	(	_sion_filedesc *	sion_filedesc,
		int	rank,
		int	blocknr,
		sion_int64	posinblk
	)

Function to set the file pointer to a new position in the same rank, updates internal data structure.

Parameters

[in,out]	sion_filedesc	sion data structure
[in]	rank	rank number of the process (SION_CURRENT_RANK to select the current rank)
[in]	blocknr	block number (SION_CURRENT_BLK to select the current block)
[in]	posinblk	position in the block (SION_CURRENT_POS to select the current position)

Return values

1	if file pointer can be moved to new position 0 otherwise

Definition at line 273 of file sion_internal_seek.c.

_sion_seek_on_current_rank_write()

int _sion_seek_on_current_rank_write	(	_sion_filedesc *	sion_filedesc,
		int	rank,
		int	blocknr,
		sion_int64	posinblk
	)

Function to set the file pointer to a new position in the same rank, updates internal data structure.

Parameters

[in,out]	sion_filedesc	sion data structure
[in]	rank	rank number of the process (SION_CURRENT_RANK to select the current rank)
[in]	blocknr	block number (SION_CURRENT_BLK to select the current block)
[in]	posinblk	position in the block (SION_CURRENT_POS to select the current position)

Return values

1	if file pointer can be moved to new position 0 otherwise

Definition at line 766 of file sion_internal_seek.c.

_sion_seek_search_abs_pos()

int _sion_seek_search_abs_pos	(	_sion_filedesc *	sion_filedesc,
		sion_int64	abspos,
		int *	newblocknr,
		sion_int64 *	newposinblk
	)

Find block and position inside block for absolute position abspos.

Parameters

[in]	sion_filedesc	sion data structure
[in]	abspos	absolut position in file
[out]	newblocknr	block number for absolut position
[out]	newposinblk	position in the block for absolut position

Return values

1	if abspos lays inside available data 0 otherwise

Definition at line 824 of file sion_internal_seek.c.

_sion_seek_search_end_pos()

int _sion_seek_search_end_pos	(	_sion_filedesc *	sion_filedesc,
		sion_int64	posend,
		int *	newblocknr,
		sion_int64 *	newposinblk
	)

Find block and position inside block position relative to end.

Parameters

[in]	sion_filedesc	sion data structure
[in]	posend	position in file relative to end (-1 seeks before last byte)
[out]	newblocknr	block number for new position
[out]	newposinblk	position in the block for new position

Return values

1	if posend lays inside available data 0 otherwise

Definition at line 864 of file sion_internal_seek.c.