196 lines
6.5 KiB
C
196 lines
6.5 KiB
C
/*
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* Copyright (c) 2007, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \file
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* Implementation of the Contiki profiling system
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#include "sys/profile.h"
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#include "sys/clock.h"
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#include <stdio.h>
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/* XXX: the profiling code is under development and may not work at
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present. */
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TIMETABLE_NONSTATIC(profile_timetable);
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TIMETABLE_NONSTATIC(profile_begin_timetable);
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TIMETABLE_NONSTATIC(profile_end_timetable);
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TIMETABLE_AGGREGATE(profile_aggregate, PROFILE_AGGREGATE_SIZE);
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static rtimer_clock_t episode_start_time;
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static unsigned int invalid_episode_overflow, invalid_episode_toolong,
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max_queuelen;
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/* The number of fine grained ticks per coarse grained ticks. We
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currently (MSP430) have 2457600 ticks per second for the fine
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grained timer, and 32678 / 8 ticks per second for the coarse. */
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#define XXX_HACK_FINE_TICKS_PER_COARSE_TICK (2457600/(32678/8))
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/*---------------------------------------------------------------------------*/
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void
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profile_init(void)
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{
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timetable_init();
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timetable_clear(&profile_begin_timetable);
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timetable_clear(&profile_end_timetable);
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}
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/*---------------------------------------------------------------------------*/
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void
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profile_episode_start(void)
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{
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struct timetable_timestamp *e;
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timetable_clear(&profile_begin_timetable);
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timetable_clear(&profile_end_timetable);
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episode_start_time = clock_time();
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e = timetable_entry(&profile_begin_timetable,
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PROFILE_TIMETABLE_SIZE - 1);
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if(e != NULL) {
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e->id = NULL;
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}
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e = timetable_entry(&profile_end_timetable,
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PROFILE_TIMETABLE_SIZE - 1);
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if(e != NULL) {
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e->id = NULL;
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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profile_episode_end(void)
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{
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struct timetable_timestamp *e;
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rtimer_clock_t episode_end_time = clock_time();
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/* printf("timetable_episode_end start %u, end %u, max time %u\n", episode_start_time, episode_end_time, 65536/FINE_TICKS_PER_COARSE_TICK); */
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e = timetable_entry(&profile_begin_timetable,
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PROFILE_TIMETABLE_SIZE - 1);
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if(e != NULL && e->id != NULL) {
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/* Invalid episode because of list overflow. */
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invalid_episode_overflow++;
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max_queuelen = PROFILE_TIMETABLE_SIZE;
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} else if(episode_end_time - episode_start_time >
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65536/XXX_HACK_FINE_TICKS_PER_COARSE_TICK) {
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/* Invalid episode because of timer overflow. */
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invalid_episode_toolong++;
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} else {
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/* Compute aggregates. */
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if(timetable_ptr(&profile_begin_timetable) > max_queuelen) {
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max_queuelen = timetable_ptr(&profile_begin_timetable);
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}
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/* timetable_aggregates_compute();*/
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}
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}
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/*---------------------------------------------------------------------------*/
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/*
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*
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* Find a specific aggregate ID in the list of aggregates.
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*
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*/
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static struct timetable_aggregate_entry *
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find_aggregate(struct timetable_aggregate *a,
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const char *id)
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{
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int i;
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for(i = 0; i < a->ptr; ++i) {
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if(a->entries[i].id == id) {
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return &a->entries[i];
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}
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}
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if(i == a->size) {
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return NULL;
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}
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a->entries[a->ptr].id = NULL;
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return &a->entries[a->ptr++];
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}
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/*---------------------------------------------------------------------------*/
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void
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profile_aggregate_print_detailed(void)
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{
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int i;
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struct timetable_aggregate *a = &profile_aggregate;
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/* printf("timetable_aggregate_print_detailed: a ptr %d\n", a->ptr);*/
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for(i = 0; i < a->ptr; ++i) {
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printf("-- %s: %lu / %u = %lu\n", a->entries[i].id,
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a->entries[i].time,
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a->entries[i].episodes,
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a->entries[i].time / a->entries[i].episodes);
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}
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printf("Memory for entries: %d * %d = %d\n",
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(int)sizeof(struct timetable_aggregate), a->ptr,
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(int)sizeof(struct timetable_aggregate) * a->ptr);
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}
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/*---------------------------------------------------------------------------*/
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void
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profile_aggregate_compute_detailed(void)
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{
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int i;
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int last;
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rtimer_clock_t t;
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struct timetable_aggregate *a = &profile_aggregate;
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struct timetable *timetable = &profile_timetable;
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struct timetable_aggregate_entry *entry;
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last = timetable_ptr(&profile_begin_timetable);
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t = profile_begin_timetable.timestamps[0].time;
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for(i = 0; i < last; ++i) {
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entry = find_aggregate(a, profile_begin_timetable.timestamps[i].id);
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if(entry == NULL) {
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/* The list is full, skip this entry */
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/* printf("detailed_timetable_aggregate_compute: list full\n");*/
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} else if(entry->id == NULL) {
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/* The id was found in the list, so we add it. */
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entry->id = timetable->timestamps[i - 1].id;
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entry->time = (unsigned long)(timetable->timestamps[i].time - t -
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timetable_timestamp_time);
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entry->episodes = 1;
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/* printf("New entry %s %lu\n", entry->id, entry->time);*/
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} else {
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entry->time += (unsigned long)(timetable->timestamps[i].time - t -
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timetable_timestamp_time);
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entry->episodes++;
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}
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t = timetable->timestamps[i].time;
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/* printf("a ptr %d\n", a->ptr);*/
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}
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}
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/*---------------------------------------------------------------------------*/
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