wrdk/wiki-app/profile.c

/*
 * Copyright (c) 2009 Openmoko Inc.
 *
 * Authors   Marek Lindner
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 *
 */



#include <profile.h>
#include <tick.h>
#include <string.h>
#include <msg.h>
#include <delay.h>
#include <regs.h>
#include <samo.h>


#if PROFILER_ON

struct prof_container prof_container[PROF_COUNT];
static const char *prof_to_string[] = { PROF_TO_STRING };


void profile_init(void)
{
	memset(&prof_container, 0, sizeof(prof_container));
}

void prof_start(unsigned long index)
{
	prof_container[index].start_time = Tick_get();
}

void prof_stop(unsigned long index)
{
	unsigned long tmp_tick = Tick_get();

	prof_container[index].calls++;
	prof_container[index].total_time += tmp_tick - prof_container[index].start_time;
}

void prof_print(void)
{
	unsigned long index, count = 0;

	msg(MSG_INFO, "\nProfile data:\n");

	for (index = 0; index < PROF_COUNT; index++) {

		if (prof_container[index].calls == 0)
			continue;

		count++;

		msg(MSG_INFO, "   %s: total cpu time = %u, calls: %u, avg time per call = %u\n",
		    prof_to_string[index],
		    prof_container[index].total_time / MCLK_MHz, prof_container[index].calls,
		    ((prof_container[index].total_time / MCLK_MHz) / prof_container[index].calls));

	}

	if (count == 0)
		msg(MSG_INFO, "   no profile data available\n");
}

void prof_demo(void)
{
	volatile unsigned int x = 2323;

	prof_start(PROF_add);
	x = 50000 + x;
	prof_stop(PROF_add);

	prof_start(PROF_subt);
	x = 50000 - x;
	prof_stop(PROF_subt);

	prof_start(PROF_mult);
	x = 50000 * x;
	prof_stop(PROF_mult);

	prof_start(PROF_div);
	x = 50000 / x;
	prof_stop(PROF_div);

	prof_start(PROF_mod);
	x = 50000 % x;
	prof_stop(PROF_mod);

	prof_start(PROF_delay);
	delay_us(1000);
	prof_stop(PROF_delay);
}

#else

void profile_init(void)
{
}

void prof_start(unsigned long index)
{
}

void prof_stop(unsigned long index)
{
}

void prof_print(void)
{
}

void prof_demo(void)
{
}

#endif