prof.c File Reference

#include <stdlib.h>
#include <malloc.h>
#include <stdio.h>
#include <string.h>
#include <pspprof.h>
#include <pspthreadman.h>

Include dependency graph for prof.c:

Data Structures
struct	gmonhdr
	gmon.out file header More...
struct	rawarc
	frompc -> selfpc graph More...
struct	gmonparam
	context More...

Macros
#define	GMON_PROF_ON   0
#define	GMON_PROF_BUSY   1
#define	GMON_PROF_ERROR   2
#define	GMON_PROF_OFF   3
#define	GMONVERSION   0x00051879
#define	HISTFRACTION   4
	one histogram per four bytes of text space
#define	SAMPLE_FREQ   1000
	define sample frequency - 1000 hz = 1ms

Functions
void	__gprof_cleanup ()
	Writes gmon.out dump file and stops profiling Called from atexit() handler; will dump out a gmon.out file at cwd with all collected information.
void	__mcount (unsigned int frompc, unsigned int selfpc)
	Internal C handler for _mcount()
void	gprof_start (void)
	Start the profiler.
void	gprof_stop (const char *filename, int should_dump)
	Stop the profiler.

Variables
int	_ftext
	defined by linker
int	_etext

Macro Definition Documentation

GMON_PROF_BUSY

#define GMON_PROF_BUSY   1

GMON_PROF_ERROR

#define GMON_PROF_ERROR   2

GMON_PROF_OFF

#define GMON_PROF_OFF   3

Referenced by gprof_stop().

GMON_PROF_ON

#define GMON_PROF_ON   0

Referenced by __mcount(), gprof_start(), and gprof_stop().

GMONVERSION

#define GMONVERSION   0x00051879

Referenced by gprof_stop().

HISTFRACTION

#define HISTFRACTION   4

one histogram per four bytes of text space

SAMPLE_FREQ

#define SAMPLE_FREQ   1000

define sample frequency - 1000 hz = 1ms

Referenced by gprof_stop().

Function Documentation

__gprof_cleanup()

void __gprof_cleanup

(

void

)

Writes gmon.out dump file and stops profiling Called from atexit() handler; will dump out a gmon.out file at cwd with all collected information.

References gprof_stop().

__mcount()

void __mcount	(	unsigned int	frompc,
		unsigned int	selfpc )

Internal C handler for _mcount()

Parameters

frompc	pc address of caller
selfpc	pc address of current function

Called from mcount.S to make life a bit easier. __mcount is called right before a function starts. GCC generates a tiny stub at the very beginning of each compiled routine, which eventually brings the control to here.

References rawarc::frompc, GMON_PROF_ON, gp, and rawarc::selfpc.

gprof_start()

void gprof_start

(

void

)

Start the profiler.

If the profiler is already running, this function stop previous one, and ignore the result. Finally, it initializes a new profiler session.

References GMON_PROF_ON, and gp.

gprof_stop()

void gprof_stop	(	const char *	filename,
		int	should_dump )

Stop the profiler.

If the profiler is not running, this function does nothing.

Parameters

filename	The name of the file to write the profiling data to.
should_dump	If 1, the profiling data will be written to the file. If 0, the profiling data will be discarded.

References fp, GMON_PROF_OFF, GMON_PROF_ON, GMONVERSION, gp, gmonhdr::hpc, gmonhdr::lpc, gmonhdr::ncnt, gmonhdr::profrate, gmonhdr::resv, SAMPLE_FREQ, sceKernelDeleteVTimer(), sceKernelStopVTimer(), and gmonhdr::version.

Referenced by __gprof_cleanup().

Variable Documentation

_etext

int _etext

extern

_ftext

int _ftext

extern

defined by linker