sion_metadata.h File Reference

#include "sion_filedesc.h"

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Macros
#define	SION_ID   "sion"

Functions
int	_sion_write_header (_sion_filedesc *sion_filedesc)
	Write the SION Meta Block 1. More...
int	_sion_write_header_var_info (_sion_filedesc *sion_filedesc)
	Write the SION Meta Block 1. More...
int	_sion_write_header_var_part_blocksizes (_sion_filedesc *sion_filedesc)
	Write the SION Meta Block 2. More...
int	_sion_write_header_var_part_mapping (_sion_filedesc *sion_filedesc, sion_int32 mapping_size, sion_int32 *mapping)
	Write mapping into the SION Meta Block 2. More...
int	_sion_read_header_fix_part (_sion_filedesc *sion_filedesc)
	Read part of the SION Meta Block 1. More...
int	_sion_read_header_var_part (_sion_filedesc *sion_filedesc)
	Read the second part of SION Meta Block 1. More...
int	_sion_read_header_var_part_blocksizes (_sion_filedesc *sion_filedesc)
	Read the SION Meta Block 2. More...
int	_sion_read_header_var_part_blocksizes_rank (_sion_filedesc *sion_filedesc)
	Read the SION Meta Block 2. More...
int	_sion_read_header_var_part_mapping (_sion_filedesc *sion_filedesc)
	Read the mapping data at end of SION Meta Block 2. More...
int	_sion_read_header_var_part_mapping_rank (_sion_filedesc *sion_filedesc)
	Read the mapping data at end of SION Meta Block 2. More...
int	_sion_write_header_var_part_blockcount_from_field (_sion_filedesc *sion_filedesc, int field_size, sion_int64 *field)
	Write the block sizes from Meta Block 2. More...
int	_sion_write_header_var_part_nextblocksizes_from_field (_sion_filedesc *sion_filedesc, int field_size, sion_int64 *field)
	Write the next set of blocksizes from Meta Block 2 Assuming that filepointer is at the correct position. More...
int	_sion_read_header_var_part_blockcount_to_field (_sion_filedesc *sion_filedesc, int field_size, sion_int64 *field)
	Read the block sizes from Meta Block 2. More...
int	_sion_read_header_var_part_nextblocksizes_to_field (_sion_filedesc *sion_filedesc, int field_size, sion_int64 *field)
	Read the next set of blocksizes from Meta Block 2 Assuming that filepointer is at the correct position. More...

Detailed Description

example meta data format

Metadata 1:
 
M11: SIONSTR                          4 bytes
     endianness                       sion_uint32
     sion_version                     sion_int32 (not in data structure)
     sion_version_patchlevel          sion_int32 (not in data structure)
     sion_fileformat_version          sion_int32
     fsblksize                        sion_int32
     ntasks                           sion_int32
     nfiles                           sion_int32
     filenumber                       sion_int32
     flag1                            sion_int64 
     flag2                            sion_int64
     prefix                           SION_FILENAME_LENGTH 

M12: globalranks(ntasks)              ntasks*sion_int64
     chunksizes(ntasks)               ntasks*sion_int64 

M13: maxusedchunks                    sion_int32
     start_of_varheader               sion_int64

Metadata 2: (starts at sion_filedesc->start_of_varheader)

M21: all_blockcount                   ntasks*sion_int64
     all_blocksizes                   ntasks*maxusedchunks*sion_int64

M22: mapping_size                     sion_int32
     mapping                          mapping_size*2**sion_int32

Definition in file sion_metadata.h.

Macro Definition Documentation

SION_ID

#define SION_ID   "sion"

Sion identification string (offset: 0x00)

Definition at line 12 of file sion_metadata.h.

Function Documentation

_sion_read_header_fix_part()

int _sion_read_header_fix_part

(

_sion_filedesc *

sion_filedesc

)

Read part of the SION Meta Block 1.

Parameters

*sion_filedesc

pointer to internal data structure, contaiing all meta data

Return values

SION_SUCESS

if okay

Definition at line 313 of file sion_metadata.c.

_sion_read_header_var_part()

int _sion_read_header_var_part

(

_sion_filedesc *

sion_filedesc

)

Read the second part of SION Meta Block 1.

Parameters

*sion_filedesc

pointer to internal data structure, containing all meta data

Return values

SION_SUCESS

if okay

Definition at line 499 of file sion_metadata.c.

_sion_read_header_var_part_blockcount_to_field()

int _sion_read_header_var_part_blockcount_to_field	(	_sion_filedesc *	sion_filedesc,
		int	field_size,
		sion_int64 *	field
	)

Read the block sizes from Meta Block 2.

Parameters

*sion_filedesc	pointer to internal data structure, contaiing all meta data
field_size	size of field
field	field where blocksizes will be stored

Return values

SION_SUCESS

if okay

Definition at line 562 of file sion_metadata.c.

_sion_read_header_var_part_blocksizes()

int _sion_read_header_var_part_blocksizes

(

_sion_filedesc *

sion_filedesc

)

Read the SION Meta Block 2.

Parameters

*sion_filedesc

pointer to internal data structure, contaiing all meta data

Return values

SION_SUCESS

if okay

Definition at line 637 of file sion_metadata.c.

_sion_read_header_var_part_blocksizes_rank()

int _sion_read_header_var_part_blocksizes_rank

(

_sion_filedesc *

sion_filedesc

)

Read the SION Meta Block 2.

Parameters

*sion_filedesc

pointer to internal data structure, contaiing all meta data

Return values

SION_SUCESS

if okay

Definition at line 739 of file sion_metadata.c.

_sion_read_header_var_part_mapping()

int _sion_read_header_var_part_mapping

(

_sion_filedesc *

sion_filedesc

)

Read the mapping data at end of SION Meta Block 2.

Parameters

*sion_filedesc

pointer to internal data structure, contaiing all meta data

file pointer will be set to the correct position

Return values

SION_SUCESS

if okay

Definition at line 685 of file sion_metadata.c.

_sion_read_header_var_part_mapping_rank()

int _sion_read_header_var_part_mapping_rank

(

_sion_filedesc *

sion_filedesc

)

Read the mapping data at end of SION Meta Block 2.

Parameters

*sion_filedesc

pointer to internal data structure, contaiing all meta data

file pointer will be set to the correct position

Return values

SION_SUCESS

if okay

Definition at line 800 of file sion_metadata.c.

_sion_read_header_var_part_nextblocksizes_to_field()

int _sion_read_header_var_part_nextblocksizes_to_field	(	_sion_filedesc *	sion_filedesc,
		int	field_size,
		sion_int64 *	field
	)

Read the next set of blocksizes from Meta Block 2 Assuming that filepointer is at the correct position.

Parameters

*sion_filedesc	pointer to internal data structure, contaiing all meta data
field_size	size of field
field	field where blocksizes will be stored

Return values

SION_SUCESS

if okay

Definition at line 603 of file sion_metadata.c.

_sion_write_header()

int _sion_write_header

(

_sion_filedesc *

sion_filedesc

)

Write the SION Meta Block 1.

Parameters

*sion_filedesc

pointer to internal data structure, contaiing all meta data

Return values

SION_SUCESS

if okay

Definition at line 35 of file sion_metadata.c.

_sion_write_header_var_info()

int _sion_write_header_var_info

(

_sion_filedesc *

sion_filedesc

)

Write the SION Meta Block 1.

Parameters

*sion_filedesc

pointer to internal data structure, containing all meta data

Return values

SION_SUCESS

if okay

Definition at line 180 of file sion_metadata.c.

_sion_write_header_var_part_blockcount_from_field()

int _sion_write_header_var_part_blockcount_from_field	(	_sion_filedesc *	sion_filedesc,
		int	field_size,
		sion_int64 *	field
	)

Write the block sizes from Meta Block 2.

Parameters

*sion_filedesc	pointer to internal data structure, contaiing all meta data
field_size	size of field
field	field where blocksizes will be stored

Return values

SION_SUCESS

if okay

Definition at line 875 of file sion_metadata.c.

_sion_write_header_var_part_blocksizes()

int _sion_write_header_var_part_blocksizes

(

_sion_filedesc *

sion_filedesc

)

Write the SION Meta Block 2.

Parameters

*sion_filedesc

pointer to internal data structure, containing all meta data

Return values

SION_SUCESS

if okay

Definition at line 219 of file sion_metadata.c.

_sion_write_header_var_part_mapping()

int _sion_write_header_var_part_mapping	(	_sion_filedesc *	sion_filedesc,
		sion_int32	mapping_size,
		sion_int32 *	mapping
	)

Write mapping into the SION Meta Block 2.

Parameters

*sion_filedesc	pointer to internal data structure, containing all meta data
*mapping_size	number of tasks in map
*mapping	pointer to map

Return values

SION_SUCESS

if okay

Definition at line 260 of file sion_metadata.c.

_sion_write_header_var_part_nextblocksizes_from_field()

int _sion_write_header_var_part_nextblocksizes_from_field	(	_sion_filedesc *	sion_filedesc,
		int	field_size,
		sion_int64 *	field
	)

Write the next set of blocksizes from Meta Block 2 Assuming that filepointer is at the correct position.

Parameters

*sion_filedesc	pointer to internal data structure, contaiing all meta data
field_size	size of field
field	field where blocksizes will be stored

Return values

SION_SUCESS

if okay

Definition at line 915 of file sion_metadata.c.