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/*
 *  $Id: time.h,v 1.2 2000-09-05 17:10:20 joel Exp $
 */
 
#include <sys/types.h>
 
#ifndef __POSIX_SYS_TIME_h
#define __POSIX_SYS_TIME_h
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*
 *  Get the CPU dependent types for clock_t and time_t
 *
 *  NOTE:  These must be visible by including <time.h>.
 */
 
/* Get _CLOCK_T_ and _TIME_T_.  */
#include <machine/types.h>
 
#ifndef __clock_t_defined
typedef _CLOCK_T_ clock_t;
#define __clock_t_defined
#endif
 
#ifndef __time_t_defined
typedef _TIME_T_ time_t;
#define __time_t_defined
#endif
 
/*
 *  14.1.1 Time Value Specification Structures, P1003.1b-1993, p. 261
 */
 
struct timespec {
  time_t  tv_sec;   /* Seconds */
  long    tv_nsec;  /* Nanoseconds */
};
 
struct itimerspec {
  struct timespec  it_interval;  /* Timer period */
  struct timespec  it_value;     /* Timer expiration */
};
 
/* XXX should really be ifdef'ed */
 
/*
 *  BSD based stuff
 */
 
struct timezone {
  int tz_minuteswest;
  int tz_dsttime;
};
 
struct timeval {
  int tv_sec;
  int tv_usec;
};
 
int gettimeofday(
  struct timeval  *tp,
  struct timezone *tzp
);
 
/* Convenience macros for operations on timevals.
   NOTE: `timercmp' does not work for >= or <=.  */
#define timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
#define timerclear(tvp)         ((tvp)->tv_sec = (tvp)->tv_usec = 0)
#define timercmp(a, b, CMP)                                                   \
  (((a)->tv_sec == (b)->tv_sec) ?                                             \
   ((a)->tv_usec CMP (b)->tv_usec) :                                          \
   ((a)->tv_sec CMP (b)->tv_sec))
#define timeradd(a, b, result)                                                \
  do {                                                                        \
    (result)->tv_sec = (a)->tv_sec + (b)->tv_sec;                             \
    (result)->tv_usec = (a)->tv_usec + (b)->tv_usec;                          \
    if ((result)->tv_usec >= 1000000)                                         \
      {                                                                       \
        ++(result)->tv_sec;                                                   \
        (result)->tv_usec -= 1000000;                                         \
      }                                                                       \
  } while (0)
#define timersub(a, b, result)                                                \
  do {                                                                        \
    (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;                             \
    (result)->tv_usec = (a)->tv_usec - (b)->tv_usec;                          \
    if ((result)->tv_usec < 0) {                                       \
      --(result)->tv_sec;                                                     \
      (result)->tv_usec += 1000000;                                           \
    }                                                                         \
  } while (0)
#ifdef __cplusplus
}
#endif 
 
#endif
/* end of include */

Line No.	Rev	Author	Line
1	39	lampret	`/*`
2	59	joel	`* $Id: time.h,v 1.2 2000-09-05 17:10:20 joel Exp $`
3	39	lampret	`*/`
4
5			`#include <sys/types.h>`
6
7			`#ifndef __POSIX_SYS_TIME_h`
8			`#define __POSIX_SYS_TIME_h`
9
10	56	joel	`#ifdef __cplusplus`
11			`extern "C" {`
12			`#endif`
13
14	39	lampret	`/*`
15			`* Get the CPU dependent types for clock_t and time_t`
16			`*`
17			`* NOTE: These must be visible by including <time.h>.`
18			`*/`
19
20			`/* Get _CLOCK_T_ and _TIME_T_. */`
21			`#include <machine/types.h>`
22
23			`#ifndef __clock_t_defined`
24			`typedef _CLOCK_T_ clock_t;`
25			`#define __clock_t_defined`
26			`#endif`
27
28			`#ifndef __time_t_defined`
29			`typedef _TIME_T_ time_t;`
30			`#define __time_t_defined`
31			`#endif`
32
33			`/*`
34			`* 14.1.1 Time Value Specification Structures, P1003.1b-1993, p. 261`
35			`*/`
36
37			`struct timespec {`
38			`time_t tv_sec; /* Seconds */`
39			`long tv_nsec; /* Nanoseconds */`
40			`};`
41
42			`struct itimerspec {`
43			`struct timespec it_interval; /* Timer period */`
44			`struct timespec it_value; /* Timer expiration */`
45			`};`
46
47			`/* XXX should really be ifdef'ed */`
48
49			`/*`
50			`* BSD based stuff`
51			`*/`
52
53			`struct timezone {`
54			`int tz_minuteswest;`
55			`int tz_dsttime;`
56			`};`
57
58			`struct timeval {`
59			`int tv_sec;`
60			`int tv_usec;`
61			`};`
62
63			`int gettimeofday(`
64			`struct timeval *tp,`
65			`struct timezone *tzp`
66			`);`
67
68	59	joel	`/* Convenience macros for operations on timevals.`
69			NOTE: `timercmp' does not work for >= or <=. */
70			`#define timerisset(tvp) ((tvp)->tv_sec \|\| (tvp)->tv_usec)`
71			`#define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0)`
72			`#define timercmp(a, b, CMP) \`
73			`(((a)->tv_sec == (b)->tv_sec) ? \`
74			`((a)->tv_usec CMP (b)->tv_usec) : \`
75			`((a)->tv_sec CMP (b)->tv_sec))`
76			`#define timeradd(a, b, result) \`
77			`do { \`
78			`(result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \`
79			`(result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \`
80			`if ((result)->tv_usec >= 1000000) \`
81			`{ \`
82			`++(result)->tv_sec; \`
83			`(result)->tv_usec -= 1000000; \`
84			`} \`
85			`} while (0)`
86			`#define timersub(a, b, result) \`
87			`do { \`
88			`(result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \`
89			`(result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \`
90			`if ((result)->tv_usec < 0) { \`
91			`--(result)->tv_sec; \`
92			`(result)->tv_usec += 1000000; \`
93			`} \`
94			`} while (0)`
95	56	joel	`#ifdef __cplusplus`
96			`}`
97			`#endif`
98
99	39	lampret	`#endif`
100			`/* end of include */`

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[/] [or1k_old/] [trunk/] [newlib/] [newlib/] [libc/] [sys/] [rtems/] [sys/] [time.h] - Blame information for rev 1782