From e32551b18f4560056d2d482f5e1505b1b98fa82a Mon Sep 17 00:00:00 2001 From: hunt Date: Tue, 29 Mar 2005 18:07:58 +0000 Subject: *** empty log message *** --- runtime/docs/html/io_8c.html | 298 ++----------------------------------------- 1 file changed, 8 insertions(+), 290 deletions(-) (limited to 'runtime/docs/html/io_8c.html') diff --git a/runtime/docs/html/io_8c.html b/runtime/docs/html/io_8c.html index ca8818d3..3357e2f8 100644 --- a/runtime/docs/html/io_8c.html +++ b/runtime/docs/html/io_8c.html @@ -4,309 +4,27 @@ -

io.c File Reference

I/O functions. More...

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Defines
-#define STP_BUF_LEN 8191

Functions
void dlog (const char *fmt,...)
Logs data.
void _stp_print_buf (const char *fmt,...)
Print into the print buffer.
void _stp_print_buf_init (void)
Clear the print buffer.
void _stp_print_symbol (const char *fmt, unsigned long address)
void dlog (const char *fmt,...)
Print addresses symbolically into the print buffer.
unsigned long cur_ret_addr (struct pt_regs *regs)
Logs Data.
void _stp_print (const char *fmt,...)
Get the current return address.

Variables
static const char *(* _stp_kallsyms_lookup )(unsigned long addr, unsigned long *symbolsize, unsigned long *offset, char **modname, char *namebuf) = (void *)KALLSYMS_LOOKUP
Lookup symbol.
-static char _stp_pbuf [8191+1]
Static buffer for printing.
-static int _stp_pbuf_len = 8191
Prints to the trace buffer.
void _stp_print_str (char *str)
Prints to the trace buffer.

Detailed Description

I/O functions.

-Definition in file io.c.

Function Documentation

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void _stp_print_buf ( const char * fmt,
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-Print into the print buffer. -
-Like printf, except output goes into _stp_pbuf, which will contain the null-terminated output. Safe because overflowing _stp_pbuf is not allowed. Size is limited by length of print buffer.
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Parameters:
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fmt A variable number of args.
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Note:
Formatting output should never be done within a probe. Use at module exit time.
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See also:
_stp_print_buf_init
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-Definition at line 55 of file io.c. -
-References _stp_pbuf. -
-Referenced by _stp_print_symbol().
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void _stp_print_buf_init ( void )
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-Clear the print buffer. -
-Output from _stp_print_buf() will accumulate in the buffer until this is called. -
-Definition at line 72 of file io.c. -
-References _stp_pbuf.
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void _stp_print_symbol ( const char * fmt,
unsigned long address
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-Print addresses symbolically into the print buffer. -
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Parameters:
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fmt A variable number of args.
address The address to lookup.
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Note:
Formatting output should never be done within a probe. Use at module exit time.
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-Definition at line 85 of file io.c. -
-References _stp_kallsyms_lookup, and _stp_print_buf().
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unsigned long cur_ret_addr ( struct pt_regs * regs )
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-Get the current return address. -
-Call from kprobes (not jprobes).
Parameters:
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regs The pt_regs saved by the kprobe.
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Returns:
The return address saved in esp or rsp.
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Note:
i386 and x86_64 only.
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-Definition at line 112 of file io.c.
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void dlog ( const char * fmt,
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-Logs data. -
-This function is compatible with printk. In fact it currently sends all output to vprintk, after sending "STP: ". This allows us to easily detect SystemTap output in the log file.
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Parameters:
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fmt A variable number of args.
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Bug:
Lines are limited in length by printk buffer.
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Todo:
Needs replaced with something much faster that does not use the system log.
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-Definition at line 16 of file io.c. -
-Referenced by _stp_list_clear(), _stp_register_jprobes(), _stp_register_kprobes(), _stp_unregister_jprobes(), and _stp_unregister_kprobes().
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Variable Documentation

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const char*(* _stp_kallsyms_lookup)(unsigned long addr, unsigned long *symbolsize, unsigned long *offset, char **modname, char *namebuf) = (void *)KALLSYMS_LOOKUP [static]
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-Lookup symbol. -
-This simply calls the kernel function kallsyms_lookup(). That function is not exported, so this workaround is required. See the kernel source, kernel/kallsyms.c for more information. -
-Definition at line 31 of file io.c. -
-Referenced by _stp_print_symbol().
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-Generated on Tue Mar 22 10:27:36 2005 for SystemTap. - +Definition in file io.c. -- cgit


Defines
-#define	STP_BUF_LEN 8191
Functions
void	dlog (const char *fmt,...)
	Logs data.
void	_stp_print_buf (const char *fmt,...)
	Print into the print buffer.
void	_stp_print_buf_init (void)
	Clear the print buffer.
void	_stp_print_symbol (const char *fmt, unsigned long address)
void	dlog (const char *fmt,...)
	Print addresses symbolically into the print buffer.
unsigned long	cur_ret_addr (struct pt_regs *regs)
	Logs Data.
void	_stp_print (const char *fmt,...)
	Get the current return address.
Variables
static const char (	_stp_kallsyms_lookup )(unsigned long addr, unsigned long symbolsize, unsigned long offset, char *modname, char namebuf) = (void *)KALLSYMS_LOOKUP
	Lookup symbol.
-static char	_stp_pbuf [8191+1]
	Static buffer for printing.
-static int	_stp_pbuf_len = 8191
	Prints to the trace buffer.
void	_stp_print_str (char *str)
	Prints to the trace buffer.