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1 // Written in the D programming language
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2 // www.digitalmars.com/d/
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3
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4 /*
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5 * The contents of this file are subject to the Mozilla Public License Version
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6 * 1.1 (the "License"); you may not use this file except in compliance with
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7 * the License. You may obtain a copy of the License at
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8 * http://www.mozilla.org/MPL/
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9 *
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10 * Software distributed under the License is distributed on an "AS IS" basis,
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11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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12 * for the specific language governing rights and limitations under the
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13 * License.
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14 *
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15 * The Original Code is the Dynamin library.
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16 *
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17 * The Initial Developer of the Original Code is Jordan Miner.
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18 * Portions created by the Initial Developer are Copyright (C) 2007-2009
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19 * the Initial Developer. All Rights Reserved.
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20 *
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21 * Contributor(s):
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22 * Jordan Miner <jminer7@gmail.com>
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23 *
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24 */
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25
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26 module dynamin.core.unix_environment;
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27
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28 public import tango.stdc.posix.sys.time;
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29 public import tango.io.Stdout;
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30
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31 // TODO: v1.0 make a binding to these
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32 extern(C) {
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33 int get_nprocs_conf();
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34 int get_nprocs();
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35 int getitimer(int which, itimerval* value);
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36 int setitimer(int which, itimerval* value,
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37 itimerval* ovalue);
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38 }
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39
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40 enum {
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41 ITIMER_REAL = 0,
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42 ITIMER_VIRTUAL = 1,
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43 ITIMER_PROF = 2
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44 }
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45
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46 struct itimerval {
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47 timeval it_interval;
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48 timeval it_value;
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49 }
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50
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51 template EnvironmentBackend() {
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52 long backend_timevalToMs(timeval* tv) {
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53 return tv.tv_sec*1000L+tv.tv_usec/1000;
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54 }
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55 const long timerSec = 31_536_000*5; // 31,536,000 seconds in 365 days
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56 static this() {
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57 itimerval itv;
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58 itv.it_value.tv_sec = timerSec;
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59 if(setitimer(ITIMER_REAL, &itv, null))
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60 Stdout("setitimer() failed").newline;
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61 }
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62 long backend_runningTime() {
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63 itimerval itv;
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64 getitimer(ITIMER_REAL, &itv);
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65 return timerSec*1000-backend_timevalToMs(&itv.it_value);
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66 }
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67 long backend_systemTime() {
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68 timeval tv;
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69 if(gettimeofday(&tv, null))
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70 Stdout("gettimeofday() failed!").newline;
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71 return backend_timevalToMs(&tv);
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72 }
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73 int backend_processorCount() {
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74 return get_nprocs();
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75 }
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76 long backend_processorTime() {
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77 return 0;
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78 }
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79 }
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80
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