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Memory benchmark plugin. Tests memory speeds and prints the kB/s.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25450 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Martitz 2010-04-03 14:04:50 +00:00
parent 83ffe43395
commit ef0cc085ad
2 changed files with 99 additions and 0 deletions
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apps/plugins/test_mem.c Normal file
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2010 Thomas Martitz
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
PLUGIN_HEADER
#define BUF_SIZE ((PLUGIN_BUFFER_SIZE-(10<<10)) / (sizeof(int)))
#define LOOP_REPEAT 8
static volatile int buf[BUF_SIZE];
#define KB_PER_SEC(delta) ((BUF_SIZE*sizeof(buf[0])*LOOP_REPEAT/delta) >> 10)
enum plugin_status plugin_start(const void* parameter)
{
(void)parameter;
bool done = false;
bool boost = false;
int count = 0;
int last_tick = 0;
rb->lcd_setfont(FONT_SYSFIXED);
while (!done)
{
unsigned i, j;
int line = 0;
int x;
int delta;
last_tick = *rb->current_tick;
for(i = 0; i < LOOP_REPEAT; i++)
{
for (j = 0; j < BUF_SIZE; j++)
buf[j] = j;
}
rb->screens[0]->clear_display();
rb->screens[0]->putsf(0, line++, "%s", boost?"boosted":"unboosted");
rb->screens[0]->putsf(0, line++, "bufsize: %u", BUF_SIZE*sizeof(buf[0]));
rb->screens[0]->putsf(0, line++, "loop#: %d", ++count);
delta = *rb->current_tick - last_tick;
rb->screens[0]->putsf(0, line++, "write ticks: %d (%d kB/s)", delta,
KB_PER_SEC(delta));
last_tick = *rb->current_tick;
for(i = 0; i < LOOP_REPEAT; i++)
{
for(j = 0; j < BUF_SIZE; j++)
x = buf[j];
}
delta = *rb->current_tick - last_tick;
rb->screens[0]->putsf(0, line++, "read ticks: %d (%d kB/s)", delta,
KB_PER_SEC(delta));
rb->screens[0]->update();
int button = rb->button_get(false);
switch (button)
{
case BUTTON_UP:
if (!boost)
{
rb->cpu_boost(true);
boost = true;
}
break;
case BUTTON_DOWN:
if (boost)
{
rb->cpu_boost(false);
boost = false;
}
break;
case BUTTON_LEFT:
done = true;
break;
}
}
return PLUGIN_OK;
}