183 lines
6.1 KiB
C
183 lines
6.1 KiB
C
/*
|
|
* Copyright (c) 2007, Swedish Institute of Computer Science.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* This file is part of the Contiki operating system.
|
|
*
|
|
* $Id: profile.c,v 1.3 2007/11/18 19:16:49 oliverschmidt Exp $
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Implementation of the Contiki profiling system
|
|
* \author
|
|
* Adam Dunkels <adam@sics.se>
|
|
*/
|
|
|
|
#include "sys/profile.h"
|
|
|
|
#include <stddef.h> /* For NULL */
|
|
|
|
unsigned int profile_timestamp_ptr;
|
|
struct profile_timestamp profile_timestamps[PROFILE_LIST_LENGTH];
|
|
rtimer_clock_t profile_timestamp_time;
|
|
|
|
int profile_invalid_episode_overflow, profile_invalid_episode_toolong;
|
|
|
|
int profile_max_queuelen = 0;
|
|
|
|
static rtimer_clock_t episode_start_time;
|
|
|
|
/* The number of fine grained ticks per coarse grained ticks. We
|
|
currently (MSP430) have 2457600 ticks per second for the fine
|
|
grained timer, and 32678 / 8 ticks per second for the coarse. */
|
|
#define FINE_TICKS_PER_COARSE_TICK (2457600/(32678/8))
|
|
|
|
/* XXX hack: we use a function called clock_counter() that is not part
|
|
of the clock API and currently is only implemented for the
|
|
MSP430. We therefore declare this function here instead of in
|
|
dev/clock.h. */
|
|
rtimer_clock_t clock_counter(void);
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
rtimer_clock_t
|
|
profile_timediff(const char *ptr1, const char *ptr2)
|
|
{
|
|
int i;
|
|
int t1, t2;
|
|
int timestamp_ptr = PROFILE_TIMESTAMP_PTR;
|
|
|
|
/* printf("profile_timestamp_ptr %d max %d\n", profile_timestamp_ptr, profile_max_queuelen);*/
|
|
|
|
t1 = t2 = PROFILE_LIST_LENGTH;
|
|
|
|
for(i = timestamp_ptr - 1; i >= 0; --i) {
|
|
/* printf("Checking 1 %s %u == %s i %d\n",
|
|
profile_timestamps[i].ptr,
|
|
profile_timestamps[i].time,
|
|
ptr1, i);*/
|
|
if(profile_timestamps[i].ptr == ptr1) {
|
|
t1 = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
for(i = i - 1; i >= 0; --i) {
|
|
/* printf("Checking 2 %s %u == %s i %d\n",
|
|
profile_timestamps[i].ptr,
|
|
profile_timestamps[i].time,
|
|
ptr1, i);*/
|
|
if(profile_timestamps[i].ptr == ptr2) {
|
|
t2 = i;
|
|
break;
|
|
}
|
|
}
|
|
/* printf("t1 %d t2 %d\n", t1, t2);*/
|
|
if(t1 != PROFILE_LIST_LENGTH && t2 != PROFILE_LIST_LENGTH) {
|
|
return profile_timestamps[t1].time - profile_timestamps[t2].time;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
profile_clear_timestamps(void)
|
|
{
|
|
/* int i;
|
|
for(i = 0; i < PROFILE_LIST_LENGTH; ++i) {
|
|
profile_timestamps[i].str = "NULL";
|
|
profile_timestamps[i].time = 0;
|
|
}*/
|
|
profile_timestamp_ptr = 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
profile_init(void)
|
|
{
|
|
profile_clear_timestamps();
|
|
|
|
/* Measure the time for taking a timestamp. */
|
|
PROFILE_TIMESTAMP(NULL);
|
|
PROFILE_TIMESTAMP(NULL);
|
|
profile_timestamp_time = profile_timestamps[1].time - profile_timestamps[0].time;
|
|
|
|
profile_clear_timestamps();
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
profile_episode_start(void)
|
|
{
|
|
profile_timestamp_ptr = 0;
|
|
|
|
episode_start_time = clock_counter();
|
|
|
|
profile_timestamps[PROFILE_LIST_LENGTH - 1].ptr = NULL;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
profile_episode_end(void)
|
|
{
|
|
rtimer_clock_t episode_end_time = clock_counter();
|
|
|
|
PROFILE_TIMESTAMP("profile_episode_end");
|
|
|
|
/* printf("profile_episode_end start %u, end %u, max time %u\n", episode_start_time, episode_end_time, 65536/FINE_TICKS_PER_COARSE_TICK); */
|
|
if(profile_timestamps[PROFILE_LIST_LENGTH - 1].ptr != NULL) {
|
|
/* Invalid episode because of list overflow. */
|
|
profile_invalid_episode_overflow++;
|
|
profile_max_queuelen = PROFILE_LIST_LENGTH;
|
|
} else if(episode_end_time - episode_start_time > 65536/FINE_TICKS_PER_COARSE_TICK) {
|
|
/* Invalid episode because of timer overflow. */
|
|
profile_invalid_episode_toolong++;
|
|
} else {
|
|
/* Compute aggregates. */
|
|
if(PROFILE_TIMESTAMP_PTR > profile_max_queuelen) {
|
|
profile_max_queuelen = PROFILE_TIMESTAMP_PTR;
|
|
}
|
|
profile_aggregates_compute();
|
|
/* printf("Episode length %d\n", profile_timestamp_ptr);*/
|
|
}
|
|
|
|
/* profile_aggregates_print(); */
|
|
/* profile_print_stats(); */
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
#if 0
|
|
#include <stdio.h>
|
|
void
|
|
profile_print_stats(void)
|
|
{
|
|
printf("Memory for profiling: %d * %d = %d\n",
|
|
sizeof(struct profile_timestamp), profile_max_queuelen,
|
|
sizeof(struct profile_timestamp) * profile_max_queuelen);
|
|
printf("Invalid episodes overflow %d time %d\n",
|
|
profile_invalid_episode_overflow,
|
|
profile_invalid_episode_toolong);
|
|
}
|
|
#endif /* 0 */
|
|
/*---------------------------------------------------------------------------*/
|