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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2013-07-27 22:15:01 +0000
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2013-07-27 22:15:01 +0000
commit7996a3d79d55b7f879dfd62e202bbfe2963718d3 (patch)
tree8d9f6759fec4099b9be503c11c7ed174f7204980 /libdde-linux26/contrib/include/linux/time.h
parent4fbe7358c7747a9165f776eb19addbb9baf7def2 (diff)
really properly move files
Diffstat (limited to 'libdde-linux26/contrib/include/linux/time.h')
-rw-r--r--libdde-linux26/contrib/include/linux/time.h243
1 files changed, 243 insertions, 0 deletions
diff --git a/libdde-linux26/contrib/include/linux/time.h b/libdde-linux26/contrib/include/linux/time.h
new file mode 100644
index 00000000..fbbd2a1c
--- /dev/null
+++ b/libdde-linux26/contrib/include/linux/time.h
@@ -0,0 +1,243 @@
+#ifndef _LINUX_TIME_H
+#define _LINUX_TIME_H
+
+#include <linux/types.h>
+
+#ifdef __KERNEL__
+# include <linux/cache.h>
+# include <linux/seqlock.h>
+# include <linux/math64.h>
+#endif
+
+#ifndef _STRUCT_TIMESPEC
+#define _STRUCT_TIMESPEC
+struct timespec {
+ time_t tv_sec; /* seconds */
+ long tv_nsec; /* nanoseconds */
+};
+#endif
+
+struct timeval {
+ time_t tv_sec; /* seconds */
+ suseconds_t tv_usec; /* microseconds */
+};
+
+struct timezone {
+ int tz_minuteswest; /* minutes west of Greenwich */
+ int tz_dsttime; /* type of dst correction */
+};
+
+#ifdef __KERNEL__
+
+extern struct timezone sys_tz;
+
+/* Parameters used to convert the timespec values: */
+#define MSEC_PER_SEC 1000L
+#define USEC_PER_MSEC 1000L
+#define NSEC_PER_USEC 1000L
+#define NSEC_PER_MSEC 1000000L
+#define USEC_PER_SEC 1000000L
+#define NSEC_PER_SEC 1000000000L
+#define FSEC_PER_SEC 1000000000000000L
+
+#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
+
+static inline int timespec_equal(const struct timespec *a,
+ const struct timespec *b)
+{
+ return (a->tv_sec == b->tv_sec) && (a->tv_nsec == b->tv_nsec);
+}
+
+/*
+ * lhs < rhs: return <0
+ * lhs == rhs: return 0
+ * lhs > rhs: return >0
+ */
+static inline int timespec_compare(const struct timespec *lhs, const struct timespec *rhs)
+{
+ if (lhs->tv_sec < rhs->tv_sec)
+ return -1;
+ if (lhs->tv_sec > rhs->tv_sec)
+ return 1;
+ return lhs->tv_nsec - rhs->tv_nsec;
+}
+
+static inline int timeval_compare(const struct timeval *lhs, const struct timeval *rhs)
+{
+ if (lhs->tv_sec < rhs->tv_sec)
+ return -1;
+ if (lhs->tv_sec > rhs->tv_sec)
+ return 1;
+ return lhs->tv_usec - rhs->tv_usec;
+}
+
+extern unsigned long mktime(const unsigned int year, const unsigned int mon,
+ const unsigned int day, const unsigned int hour,
+ const unsigned int min, const unsigned int sec);
+
+extern void set_normalized_timespec(struct timespec *ts, time_t sec, long nsec);
+extern struct timespec timespec_add_safe(const struct timespec lhs,
+ const struct timespec rhs);
+
+/*
+ * sub = lhs - rhs, in normalized form
+ */
+static inline struct timespec timespec_sub(struct timespec lhs,
+ struct timespec rhs)
+{
+ struct timespec ts_delta;
+ set_normalized_timespec(&ts_delta, lhs.tv_sec - rhs.tv_sec,
+ lhs.tv_nsec - rhs.tv_nsec);
+ return ts_delta;
+}
+
+/*
+ * Returns true if the timespec is norm, false if denorm:
+ */
+#define timespec_valid(ts) \
+ (((ts)->tv_sec >= 0) && (((unsigned long) (ts)->tv_nsec) < NSEC_PER_SEC))
+
+extern struct timespec xtime;
+extern struct timespec wall_to_monotonic;
+extern seqlock_t xtime_lock;
+
+extern unsigned long read_persistent_clock(void);
+extern int update_persistent_clock(struct timespec now);
+extern int no_sync_cmos_clock __read_mostly;
+void timekeeping_init(void);
+extern int timekeeping_suspended;
+
+unsigned long get_seconds(void);
+struct timespec current_kernel_time(void);
+
+#define CURRENT_TIME (current_kernel_time())
+#define CURRENT_TIME_SEC ((struct timespec) { get_seconds(), 0 })
+
+extern void do_gettimeofday(struct timeval *tv);
+extern int do_settimeofday(struct timespec *tv);
+extern int do_sys_settimeofday(struct timespec *tv, struct timezone *tz);
+#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
+extern long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags);
+struct itimerval;
+extern int do_setitimer(int which, struct itimerval *value,
+ struct itimerval *ovalue);
+extern unsigned int alarm_setitimer(unsigned int seconds);
+extern int do_getitimer(int which, struct itimerval *value);
+extern void getnstimeofday(struct timespec *tv);
+extern void getrawmonotonic(struct timespec *ts);
+extern void getboottime(struct timespec *ts);
+extern void monotonic_to_bootbased(struct timespec *ts);
+
+extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
+extern int timekeeping_valid_for_hres(void);
+extern void update_wall_time(void);
+extern void update_xtime_cache(u64 nsec);
+
+struct tms;
+extern void do_sys_times(struct tms *);
+
+/**
+ * timespec_to_ns - Convert timespec to nanoseconds
+ * @ts: pointer to the timespec variable to be converted
+ *
+ * Returns the scalar nanosecond representation of the timespec
+ * parameter.
+ */
+static inline s64 timespec_to_ns(const struct timespec *ts)
+{
+ return ((s64) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec;
+}
+
+/**
+ * timeval_to_ns - Convert timeval to nanoseconds
+ * @ts: pointer to the timeval variable to be converted
+ *
+ * Returns the scalar nanosecond representation of the timeval
+ * parameter.
+ */
+static inline s64 timeval_to_ns(const struct timeval *tv)
+{
+ return ((s64) tv->tv_sec * NSEC_PER_SEC) +
+ tv->tv_usec * NSEC_PER_USEC;
+}
+
+/**
+ * ns_to_timespec - Convert nanoseconds to timespec
+ * @nsec: the nanoseconds value to be converted
+ *
+ * Returns the timespec representation of the nsec parameter.
+ */
+extern struct timespec ns_to_timespec(const s64 nsec);
+
+/**
+ * ns_to_timeval - Convert nanoseconds to timeval
+ * @nsec: the nanoseconds value to be converted
+ *
+ * Returns the timeval representation of the nsec parameter.
+ */
+extern struct timeval ns_to_timeval(const s64 nsec);
+
+/**
+ * timespec_add_ns - Adds nanoseconds to a timespec
+ * @a: pointer to timespec to be incremented
+ * @ns: unsigned nanoseconds value to be added
+ *
+ * This must always be inlined because its used from the x86-64 vdso,
+ * which cannot call other kernel functions.
+ */
+static __always_inline void timespec_add_ns(struct timespec *a, u64 ns)
+{
+ a->tv_sec += __iter_div_u64_rem(a->tv_nsec + ns, NSEC_PER_SEC, &ns);
+ a->tv_nsec = ns;
+}
+#endif /* __KERNEL__ */
+
+#define NFDBITS __NFDBITS
+
+#define FD_SETSIZE __FD_SETSIZE
+#define FD_SET(fd,fdsetp) __FD_SET(fd,fdsetp)
+#define FD_CLR(fd,fdsetp) __FD_CLR(fd,fdsetp)
+#define FD_ISSET(fd,fdsetp) __FD_ISSET(fd,fdsetp)
+#define FD_ZERO(fdsetp) __FD_ZERO(fdsetp)
+
+/*
+ * Names of the interval timers, and structure
+ * defining a timer setting:
+ */
+#define ITIMER_REAL 0
+#define ITIMER_VIRTUAL 1
+#define ITIMER_PROF 2
+
+struct itimerspec {
+ struct timespec it_interval; /* timer period */
+ struct timespec it_value; /* timer expiration */
+};
+
+struct itimerval {
+ struct timeval it_interval; /* timer interval */
+ struct timeval it_value; /* current value */
+};
+
+/*
+ * The IDs of the various system clocks (for POSIX.1b interval timers):
+ */
+#define CLOCK_REALTIME 0
+#define CLOCK_MONOTONIC 1
+#define CLOCK_PROCESS_CPUTIME_ID 2
+#define CLOCK_THREAD_CPUTIME_ID 3
+#define CLOCK_MONOTONIC_RAW 4
+
+/*
+ * The IDs of various hardware clocks:
+ */
+#define CLOCK_SGI_CYCLE 10
+#define MAX_CLOCKS 16
+#define CLOCKS_MASK (CLOCK_REALTIME | CLOCK_MONOTONIC)
+#define CLOCKS_MONO CLOCK_MONOTONIC
+
+/*
+ * The various flags for setting POSIX.1b interval timers:
+ */
+#define TIMER_ABSTIME 0x01
+
+#endif
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