Contiki 2.6
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00001 /* 00002 * Copyright (c) 2008, Swedish Institute of Computer Science. 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the Institute nor the names of its contributors 00014 * may be used to endorse or promote products derived from this software 00015 * without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * 00029 * This file is part of the Contiki operating system. 00030 * 00031 * $Id: timetable.c,v 1.4 2010/04/06 19:10:21 anthony-a Exp $ 00032 */ 00033 00034 /** 00035 * \file 00036 * Implementation of timetable, a data structure containing timestamps for events 00037 * \author 00038 * Adam Dunkels <adam@sics.se> 00039 */ 00040 #include "sys/clock.h" 00041 #include "sys/timetable.h" 00042 00043 #include <stdio.h> 00044 00045 rtimer_clock_t timetable_timestamp_time; 00046 00047 00048 /*---------------------------------------------------------------------------*/ 00049 struct timetable_timestamp * 00050 timetable_entry(struct timetable *t, int num) 00051 { 00052 if(t == NULL) { 00053 return NULL; 00054 } 00055 return &(t->timestamps[num]); 00056 } 00057 /*---------------------------------------------------------------------------*/ 00058 int 00059 timetable_ptr(struct timetable *t) 00060 { 00061 return *t->ptr; 00062 } 00063 /*---------------------------------------------------------------------------*/ 00064 void 00065 timetable_clear(struct timetable *t) 00066 { 00067 *t->ptr = 0; 00068 } 00069 /*---------------------------------------------------------------------------*/ 00070 rtimer_clock_t 00071 timetable_timediff(struct timetable *t, 00072 const char *id1, const char *id2) 00073 { 00074 #ifdef SDCC_mcs51 00075 char i; /* SDCC tracker 2982753 */ 00076 #else 00077 int i; 00078 #endif 00079 int t1, t2; 00080 00081 t1 = t2 = t->size; 00082 00083 for(i = *t->ptr - 1; i >= 0; --i) { 00084 if(t->timestamps[i].id == id1) { 00085 t1 = i; 00086 break; 00087 } 00088 } 00089 00090 for(i = i - 1; i >= 0; --i) { 00091 if(t->timestamps[i].id == id2) { 00092 t2 = i; 00093 break; 00094 } 00095 } 00096 if(t1 != t->size && t2 != t->size) { 00097 return t->timestamps[t1].time - t->timestamps[t2].time; 00098 } 00099 00100 return 0; 00101 } 00102 /*---------------------------------------------------------------------------*/ 00103 void 00104 timetable_init(void) 00105 { 00106 char dummy1, dummy2; 00107 #define temp_size 4 00108 TIMETABLE_STATIC(temp); 00109 00110 timetable_clear(&temp); 00111 00112 /* Measure the time for taking a timestamp. */ 00113 TIMETABLE_TIMESTAMP(temp, &dummy1); 00114 TIMETABLE_TIMESTAMP(temp, &dummy2); 00115 timetable_timestamp_time = timetable_timediff(&temp, &dummy1, &dummy2); 00116 } 00117 /*---------------------------------------------------------------------------*/ 00118 void 00119 timetable_print(struct timetable *t) 00120 { 00121 unsigned int i; 00122 int time; 00123 00124 time = t->timestamps[0].time; 00125 00126 printf("---\n"); 00127 for(i = 1; i < *t->ptr; ++i) { 00128 printf("%s: %u\n", t->timestamps[i - 1].id, t->timestamps[i].time - time); 00129 time = t->timestamps[i].time; 00130 } 00131 } 00132 /*---------------------------------------------------------------------------*/