| The Android Open Source Project | a27d2ba | 2008-10-21 07:00:00 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 18 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 19 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 22 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 25 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | #ifndef _SYS_TIME_H_ |
| 29 | #define _SYS_TIME_H_ |
| 30 | |
| 31 | #include <sys/cdefs.h> |
| 32 | #include <sys/types.h> |
| 33 | #include <linux/time.h> |
| 34 | |
| 35 | __BEGIN_DECLS |
| 36 | |
| 37 | extern int gettimeofday(struct timeval *, struct timezone *); |
| 38 | extern int settimeofday(const struct timeval *, const struct timezone *); |
| 39 | |
| 40 | extern int getitimer(int, struct itimerval *); |
| 41 | extern int setitimer(int, const struct itimerval *, struct itimerval *); |
| 42 | |
| 43 | extern int utimes(const char *, const struct timeval *); |
| 44 | |
| 45 | #define timerclear(a) \ |
| 46 | ((a)->tv_sec = (a)->tv_usec = 0) |
| 47 | |
| 48 | #define timerisset(a) \ |
| 49 | ((a)->tv_sec != 0 || (a)->tv_usec != 0) |
| 50 | |
| 51 | #define timercmp(a, b, op) \ |
| 52 | ((a)->tv_sec == (b)->tv_sec \ |
| 53 | ? (a)->tv_usec op (b)->tv_usec \ |
| 54 | : (a)->tv_sec op (b)->tv_sec) |
| 55 | |
| 56 | #define timeradd(a, b, res) \ |
| 57 | do { \ |
| 58 | (res)->tv_sec = (a)->tv_sec + (b)->tv_sec; \ |
| 59 | (res)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ |
| 60 | if ((res)->tv_usec >= 1000000) { \ |
| 61 | (res)->tv_usec -= 1000000; \ |
| 62 | (res)->tv_sec += 1; \ |
| 63 | } \ |
| 64 | } while (0) |
| 65 | |
| 66 | #define timersub(a, b, res) \ |
| 67 | do { \ |
| 68 | (res)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ |
| 69 | (res)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ |
| 70 | if ((res)->tv_usec < 0) { \ |
| 71 | (res)->tv_usec += 1000000; \ |
| 72 | (res)->tv_sec -= 1; \ |
| 73 | } \ |
| 74 | } while (0) |
| 75 | |
| 76 | __END_DECLS |
| 77 | |
| 78 | #endif /* _SYS_TIME_H_ */ |