2 * Copyright (C) 2008 The Android Open Source Project
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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11 * notice, this list of conditions and the following disclaimer in
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15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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31 #include <sys/cdefs.h>
32 #include <sys/types.h>
33 #include <linux/time.h>
37 extern int gettimeofday(struct timeval *, struct timezone *);
38 extern int settimeofday(const struct timeval *, const struct timezone *);
40 extern int getitimer(int, struct itimerval *);
41 extern int setitimer(int, const struct itimerval *, struct itimerval *);
43 extern int utimes(const char *, const struct timeval *);
45 #define timerclear(a) \
46 ((a)->tv_sec = (a)->tv_usec = 0)
48 #define timerisset(a) \
49 ((a)->tv_sec != 0 || (a)->tv_usec != 0)
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)
56 #define timeradd(a, b, res) \
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; \
66 #define timersub(a, b, res) \
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; \
78 #endif /* _SYS_TIME_H_ */