maplog.c File Reference

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Functions
__clib_export int	clib_maplog_init (clib_maplog_init_args_t *a)
	Initialize a maplog object. More...
void	clib_maplog_update_header (clib_maplog_main_t *mm)
	Update a mapped log header file. More...
__clib_export void	clib_maplog_close (clib_maplog_main_t *mm)
	Close a mapped log, and update the log header file. More...
__clib_export u8 *	format_maplog_header (u8 *s, va_list *args)
	format a log header More...
__clib_export int	clib_maplog_process (char *file_basename, void *fp_arg)
	Process a complete maplog. More...

Function Documentation

clib_maplog_close()

__clib_export void clib_maplog_close

(

clib_maplog_main_t *

mm

)

Close a mapped log, and update the log header file.

Unmap the current log segments. Read the log header. Update the number of records, and number of files

Parameters

[in/out]

mm mapped log object

Definition at line 299 of file maplog.c.

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clib_maplog_init()

__clib_export int clib_maplog_init

(

clib_maplog_init_args_t *

a

)

Initialize a maplog object.

Compute record and file size parameters Create and map two log segments to seed the process

Parameters

[in/out]

a init args structure

Returns

0 => success, <0 => failure

Definition at line 28 of file maplog.c.

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clib_maplog_process()

__clib_export int clib_maplog_process	(	char *	file_basename,
		void *	fp_arg
	)

Process a complete maplog.

Reads the maplog header. Map and process all log segments in order. Calls the callback function once per file with a record count.

Note: if the file header isn't updated by calling clib_maplog_close(), it will appear to have an infinite number of records in an infinite number of files.

So long as the callback function understands that possibility

• by simply ignoring NULL records - the scheme still works...

Parameters

[in]	file_basename	Same basename supplied to clib_maplog_init
[in]	fp_arg	Callback function pointer

Definition at line 384 of file maplog.c.

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clib_maplog_update_header()

void clib_maplog_update_header

(

clib_maplog_main_t *

mm

)

Update a mapped log header file.

Read the log header. Update the number of records, and number of files

Parameters

[in/out]

mm mapped log object

Definition at line 246 of file maplog.c.

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format_maplog_header()

__clib_export u8* format_maplog_header	(	u8 *	s,
		va_list *	args
	)

format a log header

Usage: s = format (0, "%U", format_maplog_header(), headerp, verbose);

Parameters

[in]	h	clib_maplog_header_t pointer
[in]	verbose	self-explanatory

Definition at line 335 of file maplog.c.