1 | /*
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2 | * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without modification,
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6 | * are permitted provided that the following conditions are met:
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7 | *
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8 | * 1. Redistributions of source code must retain the above copyright notice,
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9 | * this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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11 | * this list of conditions and the following disclaimer in the documentation
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12 | * and/or other materials provided with the distribution.
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13 | * 3. The name of the author may not be used to endorse or promote products
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14 | * derived from this software without specific prior written permission.
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15 | *
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16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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25 | * OF SUCH DAMAGE.
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26 | *
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27 | * This file is part of the lwIP TCP/IP stack.
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28 | *
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29 | * Author: Adam Dunkels <adam@sics.se>
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30 | *
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31 | */
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32 |
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33 | #include "arch/perf.h"
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34 |
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35 | #include <stdio.h>
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36 |
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37 | static FILE *f;
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38 |
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39 | void
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40 | perf_print(unsigned long c1l, unsigned long c1h,
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41 | unsigned long c2l, unsigned long c2h,
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42 | char *key)
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43 | {
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44 | unsigned long sub_ms, sub_ls;
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45 |
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46 | sub_ms = c2h - c1h;
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47 | sub_ls = c2l - c1l;
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48 | if (c2l < c1l) sub_ms--;
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49 | fprintf(f, "%s: %.8lu%.8lu\n", key, sub_ms, sub_ls);
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50 | fflush(NULL);
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51 | }
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52 |
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53 | void
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54 | perf_print_times(struct tms *start, struct tms *end, char *key)
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55 | {
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56 | fprintf(f, "%s: %lu\n", key, end->tms_stime - start->tms_stime);
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57 | fflush(NULL);
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58 | }
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59 |
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60 | void
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61 | perf_init(char *fname)
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62 | {
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63 | f = fopen(fname, "w");
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64 | }
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65 |
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