| 1 | /* |
| 2 | * Copyright (c) 2012 Your File System Inc. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * 1. Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * |
| 13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR `AS IS'' AND ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 23 | */ |
| 24 | |
| 25 | /* This header provides routines for dealing with the 100ns based AFS |
| 26 | * time type. We hide the actual variable behind a structure, so that |
| 27 | * attempts to do |
| 28 | * |
| 29 | * time_t ourTime; |
| 30 | * opr_time theirTime; |
| 31 | * |
| 32 | * ourTime = theirTime; |
| 33 | * |
| 34 | * will be caught by the compiler. |
| 35 | */ |
| 36 | |
| 37 | #ifndef OPENAFS_OPR_TIME_H |
| 38 | #define OPENAFS_OPR_TIME_H |
| 39 | |
| 40 | struct opr_time { |
| 41 | afs_int64 time; |
| 42 | }; |
| 43 | |
| 44 | #define OPR_TIME_INIT {0LL} |
| 45 | |
| 46 | static_inline void |
| 47 | opr_time_FromSecs(struct opr_time *out, time_t in) |
| 48 | { |
| 49 | out->time = ((afs_int64)in) * 10000000; |
| 50 | } |
| 51 | |
| 52 | static_inline time_t |
| 53 | opr_time_ToSecs(struct opr_time *in) |
| 54 | { |
| 55 | return in->time/10000000;; |
| 56 | } |
| 57 | |
| 58 | static_inline void |
| 59 | opr_time_FromMsecs(struct opr_time *out, int msecs) |
| 60 | { |
| 61 | out->time = ((afs_int64)msecs) * 10000; |
| 62 | } |
| 63 | |
| 64 | static_inline int |
| 65 | opr_time_ToMsecs(struct opr_time *in) |
| 66 | { |
| 67 | return in->time/10000; |
| 68 | } |
| 69 | |
| 70 | static_inline void |
| 71 | opr_time_FromTimeval(struct opr_time *out, struct timeval *in) |
| 72 | { |
| 73 | out->time = ((afs_int64)in->tv_sec) * 10000000 + in->tv_usec * 10; |
| 74 | } |
| 75 | |
| 76 | static_inline void |
| 77 | opr_time_ToTimeval(struct opr_time *in, struct timeval *out) |
| 78 | { |
| 79 | out->tv_sec = in->time / 10000000; |
| 80 | out->tv_usec = (in->time / 10) % 1000000; |
| 81 | } |
| 82 | |
| 83 | static_inline int |
| 84 | opr_time_Now(struct opr_time *out) |
| 85 | { |
| 86 | struct timeval tv; |
| 87 | int code; |
| 88 | |
| 89 | code = gettimeofday(&tv, NULL); |
| 90 | if (code == 0) |
| 91 | opr_time_FromTimeval(out, &tv); |
| 92 | |
| 93 | return code; |
| 94 | } |
| 95 | |
| 96 | static_inline int |
| 97 | opr_time_GreaterThan(struct opr_time *t1, struct opr_time *t2) |
| 98 | { |
| 99 | return t1->time > t2->time; |
| 100 | } |
| 101 | |
| 102 | static_inline int |
| 103 | opr_time_LessThan(struct opr_time *t1, struct opr_time *t2) |
| 104 | { |
| 105 | return t1->time < t2->time; |
| 106 | } |
| 107 | |
| 108 | static_inline void |
| 109 | opr_time_Add(struct opr_time *t1, struct opr_time *t2) |
| 110 | { |
| 111 | t1->time += t2->time; |
| 112 | } |
| 113 | |
| 114 | static_inline void |
| 115 | opr_time_Sub(struct opr_time *t1, struct opr_time *t2) |
| 116 | { |
| 117 | t1->time -= t2->time; |
| 118 | } |
| 119 | |
| 120 | static_inline void |
| 121 | opr_time_AddMsec(struct opr_time *t1, int msec) |
| 122 | { |
| 123 | struct opr_time t2; |
| 124 | |
| 125 | opr_time_FromMsecs(&t2, msec); |
| 126 | opr_time_Add(t1, &t2); |
| 127 | } |
| 128 | |
| 129 | #endif |