Scratch Buffer

Scratch Buffer Functions. More...

Defines
#define	STP_BUF_LEN   8191
	Maximum size of buffer, not including terminating NULL.
Functions
void	_stp_sprint (const char *fmt,...)
	Sprint into the scratch buffer.
void	_stp_sprint_str (const char *str)
void	_stp_scbuf_clear (void)
	Clear the scratch buffer.
Variables
char	_stp_scbuf [8191+1]
	Scratch buffer for printing, building strings, etc.

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Detailed Description

Scratch Buffer Functions.

The scratch buffer is for collecting output before storing in a map, printing, etc. This is a per-cpu static buffer. It is necessary because of the limited stack space available in the kernel.

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Function Documentation

void _stp_scbuf_clear (  void   )

Clear the scratch buffer. Output from _stp_sprint() will accumulate in the buffer until this is called. Definition at line 59 of file scbuf.c. References _stp_scbuf, and STP_BUF_LEN.

void _stp_sprint (  const char *  fmt,   ... )

Sprint into the scratch buffer. Like printf, except output goes into _stp_scbuf, which will contain the null-terminated output. Safe because overflowing _stp_scbuf is not allowed. Size is limited by length of scratch buffer, STP_BUF_LEN. Parameters: fmt  A printf-style format string followed by a variable number of args. See also: _stp_scbuf_clear Definition at line 32 of file scbuf.c. References _stp_scbuf, and STP_BUF_LEN. Referenced by _stp_symbol_sprint().