Git-Mirrors/OpenModem
1
0
Fork 0
mirror of https://github.com/markqvist/OpenModem.git synced 2025-05-05 07:55:05 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Working

Browse source
This commit is contained in:
Mark Qvist 2014-04-03 22:21:37 +02:00
commit c898b090dd
1049 changed files with 288572 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

136
bertos/benchmark/context_switch.c Normal file
View file

@ -0,0 +1,136 @@
/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos 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 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2010 Develer S.r.l. (http://www.develer.com/)
*
* -->
*
* \brief Context switch benchmark
*
* \author Andrea Righi <arighi@develer.com>
* \author Daniele Basiele <asterix@develer.com>
*/
#include "context_switch.h"
#include "hw/hw_led.h"
#include "cfg/cfg_context_switch.h"
#include <cfg/debug.h>
#include <cpu/irq.h>
#include <cpu/power.h>
#include <drv/timer.h>
#if CONFIG_USE_HP_TIMER
#include <drv/ser.h>
static Serial out;
#endif
#include <kern/proc.h>
#define PROC_STACK_SIZE KERN_MINSTACKSIZE
static PROC_DEFINE_STACK(hp_stack, PROC_STACK_SIZE);
static PROC_DEFINE_STACK(lp_stack, PROC_STACK_SIZE);
static Process *hp_proc, *lp_proc, *main_proc;
#if CONFIG_USE_HP_TIMER
static hptime_t start, end;
#endif
static void NORETURN hp_process(void)
{
while (1)
{
sig_wait(SIG_USER0);
#if CONFIG_USE_LED
LED_ON();
#endif
#if CONFIG_USE_HP_TIMER
end = timer_hw_hpread();
#endif
sig_send(main_proc, SIG_USER0);
}
}
static void NORETURN lp_process(void)
{
while (1)
{
sig_wait(SIG_USER0);
#if CONFIG_USE_LED
LED_ON();
LED_OFF();
#endif
#if CONFIG_USE_HP_TIMER
start = timer_hw_hpread();
#endif
sig_send(hp_proc, SIG_USER0);
}
}
void NORETURN context_switch(void)
{
IRQ_ENABLE;
timer_init();
proc_init();
#if CONFIG_USE_HP_TIMER
ser_init(&out, CONFIG_CTX_DEBUG_PORT);
ser_setbaudrate(&out, CONFIG_CTX_DEBUG_BAUDRATE);
#endif
#if CONFIG_USE_LED
LED_INIT();
#endif
proc_forbid();
hp_proc = proc_new(hp_process, NULL, PROC_STACK_SIZE, hp_stack);
lp_proc = proc_new(lp_process, NULL, PROC_STACK_SIZE, lp_stack);
main_proc = proc_current();
proc_setPri(hp_proc, 2);
proc_setPri(lp_proc, 1);
proc_permit();
while (1)
{
timer_delay(100);
sig_send(lp_proc, SIG_USER0);
sig_wait(SIG_USER0);
#if CONFIG_USE_HP_TIMER
kfile_printf(&out.fd,
"Switch: %lu.%lu usec\n\r",
hptime_to_us((end - start)),
hptime_to_us((end - start) * 1000) % 1000);
#endif
}
}