4.104.114.84.95
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1 | /* |
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2 | * times() - POSIX 1003.1b 4.5.2 - Get Process Times |
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3 | * |
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4 | * COPYRIGHT (c) 1989-1999. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.rtems.com/license/LICENSE. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #if HAVE_CONFIG_H |
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15 | #include "config.h" |
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16 | #endif |
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17 | |
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18 | #include <rtems.h> |
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19 | |
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20 | #include <sys/times.h> |
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21 | #include <time.h> |
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22 | #include <sys/time.h> |
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23 | #include <errno.h> |
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24 | #include <assert.h> |
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25 | |
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26 | clock_t _times( |
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27 | struct tms *ptms |
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28 | ) |
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29 | { |
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30 | rtems_interval ticks; |
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31 | |
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32 | if ( !ptms ) { |
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33 | errno = EFAULT; |
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34 | return -1; |
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35 | } |
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36 | |
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37 | /* |
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38 | * This call does not depend on TOD being initialized and can't fail. |
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39 | */ |
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40 | |
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41 | (void) rtems_clock_get( RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &ticks ); |
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42 | |
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43 | /* |
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44 | * RTEMS technically has no notion of system versus user time |
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45 | * since there is no separation of OS from application tasks. |
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46 | * But we can at least make a distinction between the number |
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47 | * of ticks since boot and the number of ticks executed by this |
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48 | * this thread. |
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49 | */ |
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50 | |
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51 | ptms->tms_utime = _Thread_Executing->ticks_executed; |
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52 | ptms->tms_stime = ticks; |
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53 | ptms->tms_cutime = 0; |
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54 | ptms->tms_cstime = 0; |
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55 | |
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56 | return ticks; |
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57 | } |
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58 | |
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59 | /* |
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60 | * times() |
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61 | * |
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62 | * times() system call wrapper for _times() above. |
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63 | */ |
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64 | |
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65 | clock_t times( |
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66 | struct tms *ptms |
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67 | ) |
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68 | { |
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69 | return _times( ptms ); |
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70 | } |
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71 | |
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72 | /* |
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73 | * _times_r |
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74 | * |
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75 | * This is the Newlib dependent reentrant version of times(). |
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76 | */ |
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77 | |
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78 | #if defined(RTEMS_NEWLIB) |
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79 | |
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80 | #include <reent.h> |
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81 | |
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82 | clock_t _times_r( |
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83 | struct _reent *ptr, |
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84 | struct tms *ptms |
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85 | ) |
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86 | { |
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87 | return _times( ptms ); |
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88 | } |
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89 | #endif |
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