Contiki-NG
energest.c
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1 /*
2  * Copyright (c) 2007, Swedish Institute of Computer Science.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * This file is part of the Contiki operating system.
30  *
31  */
32 
33 /**
34  * \file
35  * Implementation of the energy estimation module
36  * \author
37  * Adam Dunkels <adam@sics.se>
38  */
39 
40 #include "contiki.h"
41 #include "sys/energest.h"
42 
43 #if ENERGEST_CONF_ON
44 
45 uint64_t energest_total_time[ENERGEST_TYPE_MAX];
46 ENERGEST_TIME_T energest_current_time[ENERGEST_TYPE_MAX];
47 unsigned char energest_current_mode[ENERGEST_TYPE_MAX];
48 
49 /*---------------------------------------------------------------------------*/
50 void
51 energest_init(void)
52 {
53  int i;
54  for(i = 0; i < ENERGEST_TYPE_MAX; ++i) {
55  energest_total_time[i] = energest_current_time[i] = 0;
56  energest_current_mode[i] = 0;
57  }
58  ENERGEST_ON(ENERGEST_TYPE_CPU);
59 }
60 /*---------------------------------------------------------------------------*/
61 void
62 energest_flush(void)
63 {
64  uint64_t now;
65  int i;
66  for(i = 0; i < ENERGEST_TYPE_MAX; i++) {
67  if(energest_current_mode[i]) {
68  now = ENERGEST_CURRENT_TIME();
69  energest_total_time[i] +=
70  (ENERGEST_TIME_T)(now - energest_current_time[i]);
71  energest_current_time[i] = now;
72  }
73  }
74 }
75 /*---------------------------------------------------------------------------*/
76 uint64_t
77 energest_get_total_time(void)
78 {
79  return energest_type_time(ENERGEST_TYPE_CPU) +
80  energest_type_time(ENERGEST_TYPE_LPM) +
81  energest_type_time(ENERGEST_TYPE_DEEP_LPM);
82 }
83 /*---------------------------------------------------------------------------*/
84 #else /* ENERGEST_CONF_ON */
85 
86 void
87 energest_init(void)
88 {
89 }
90 
91 void
92 energest_flush(void)
93 {
94 }
95 
96 uint64_t
97 energest_get_total_time(void)
98 {
99  return 0;
100 }
101 
102 #endif /* ENERGEST_CONF_ON */
Header file for the energy estimation mechanism