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| Rev | Author | Line No. | Line |
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| 947 | trimarchi | 1 | /*---------------------------------------------------------------------------- |
| 2 | *------------------------- M a R T E O S ------------------------ |
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| 3 | *---------------------------------------------------------------------------- |
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| 4 | * V1.0 Dec 2001 |
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| 5 | * |
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| 6 | * 't i m e s p e c _ o p e r a t i o n s' |
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| 7 | * |
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| 8 | * H |
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| 9 | * |
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| 10 | * File 'timespec_operations.h' by MAR. |
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| 11 | * (july 2002) transformed into macros by Jul. |
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| 12 | * Some basic operations with the type 'timespec'. |
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| 13 | * |
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| 14 | * ---------------------------------------------------------------------- |
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| 15 | * Copyright (C) 2001 Universidad de Cantabria, SPAIN |
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| 16 | * |
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| 17 | * Authors: Mario Aldea Rivas aldeam@ctr.unican.es |
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| 18 | * Michael Gonzalez Harbour mgh@ctr.unican.es |
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| 19 | * |
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| 20 | * MaRTE OS is free software; you can redistribute it and/or modify it |
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| 21 | * under the terms of the GNU General Public License as published by the |
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| 22 | * Free Software Foundation; either version 2, or (at your option) any |
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| 23 | * later version. |
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| 24 | * |
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| 25 | * MaRTE OS is distributed in the hope that it will be useful, but |
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| 26 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 28 | * General Public License for more details. |
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| 29 | * |
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| 30 | * You should have received a copy of the GNU General Public License |
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| 31 | * distributed with MaRTE OS; see file COPYING. If not, write to the |
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| 32 | * Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
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| 33 | * 02111-1307, USA. |
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| 34 | * |
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| 35 | * As a special exception, if you link this unit with other files to |
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| 36 | * produce an executable, this unit does not by itself cause the |
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| 37 | * resulting executable to be covered by the GNU General Public License. |
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| 38 | * This exception does not however invalidate any other reasons why the |
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| 39 | * executable file might be covered by the GNU Public License. |
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| 40 | * |
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| 41 | *---------------------------------------------------------------------------*/ |
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| 42 | |||
| 43 | #ifndef _MARTE_MISC_TIMESPEC_OPERATIONS_H_ |
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| 44 | #define _MARTE_MISC_TIMESPEC_OPERATIONS_H_ |
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| 45 | |||
| 46 | #include <time.h> |
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| 47 | |||
| 48 | #define smaller_timespec(t1, t2) \ |
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| 49 | ( \ |
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| 50 | (t1)->tv_sec < (t2)->tv_sec || ((t1)->tv_sec == (t2)->tv_sec && \ |
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| 51 | (t1)->tv_nsec < (t2)->tv_nsec) \ |
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| 52 | ) |
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| 53 | |||
| 54 | #define smaller_or_equal_timespec(t1, t2) \ |
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| 55 | ( \ |
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| 56 | (t1)->tv_sec < (t2)->tv_sec || ((t1)->tv_sec == (t2)->tv_sec && \ |
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| 57 | (t1)->tv_nsec <= (t2)->tv_nsec) \ |
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| 58 | ) |
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| 59 | |||
| 60 | #define incr_timespec(t1, t2) \ |
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| 61 | { \ |
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| 62 | (t1)->tv_sec += (t2)->tv_sec; \ |
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| 63 | (t1)->tv_nsec += (t2)->tv_nsec; \ |
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| 64 | if ((t1)->tv_nsec >= 1000000000) { \ |
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| 65 | (t1)->tv_sec ++; \ |
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| 66 | (t1)->tv_nsec -= 1000000000; \ |
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| 67 | } \ |
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| 68 | } |
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| 69 | |||
| 70 | #define decr_timespec(t1, t2) \ |
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| 71 | { \ |
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| 72 | if ((t1)->tv_nsec < (t2)->tv_nsec) { \ |
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| 73 | (t1)->tv_sec -= (t2)->tv_sec + 1; \ |
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| 74 | (t1)->tv_nsec = (t1)->tv_nsec + 1000000000 - (t2)->tv_nsec; \ |
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| 75 | } else { \ |
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| 76 | (t1)->tv_sec -= (t2)->tv_sec; \ |
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| 77 | (t1)->tv_nsec -= (t2)->tv_nsec; \ |
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| 78 | } \ |
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| 79 | } |
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| 80 | |||
| 81 | |||
| 82 | #define add_timespec( sum , t1 , t2 ) \ |
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| 83 | { \ |
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| 84 | (sum)->tv_sec = (t1)->tv_sec + (t2)->tv_sec; \ |
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| 85 | (sum)->tv_nsec = (t1)->tv_nsec + (t2)->tv_nsec; \ |
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| 86 | if ((sum)->tv_nsec >= 1000000000) { \ |
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| 87 | (sum)->tv_sec ++; \ |
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| 88 | (sum)->tv_nsec -= 1000000000; \ |
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| 89 | } \ |
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| 90 | } |
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| 91 | |||
| 92 | #define float_to_timespec( f1 , t1 ) \ |
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| 93 | ( \ |
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| 94 | (t1)->tv_sec = (int)(f1), \ |
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| 95 | (t1)->tv_nsec = (int)(((f1)-(float)((t1)->tv_sec))*1000000000.0), \ |
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| 96 | (t1) \ |
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| 97 | ) |
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| 98 | |||
| 99 | #define float_to_timespec_value(f1, t1) \ |
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| 100 | ( \ |
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| 101 | (t1).tv_sec = (int)(f1), \ |
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| 102 | (t1).tv_nsec = (int)(((f1)-(float)((t1).tv_sec))*1000000000.0), \ |
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| 103 | (t1) \ |
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| 104 | ) |
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| 105 | |||
| 106 | #endif /* _MARTE_MISC_TIMESPEC_OPERATIONS_H_ */ |
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| 107 |