Commit | Line | Data |
---|---|---|
10a4cc63 | 1 | /* systime.h - System-dependent definitions for time manipulations. |
3a22ee35 | 2 | Copyright (C) 1993, 1994 Free Software Foundation, Inc. |
f469625a JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
d712c26d | 20 | #ifdef TIME_WITH_SYS_TIME |
7b89707c | 21 | #include <sys/time.h> |
f469625a | 22 | #include <time.h> |
d712c26d | 23 | #else |
5cbdb356 JB |
24 | #ifdef HAVE_SYS_TIME_H |
25 | #include <sys/time.h> | |
d712c26d JB |
26 | #else |
27 | #include <time.h> | |
98f77753 | 28 | #endif |
b7cceaf1 | 29 | #endif |
7b89707c | 30 | |
2ffe7ef2 RS |
31 | #ifdef HAVE_TZNAME |
32 | #ifndef tzname /* For SGI. */ | |
33 | extern char *tzname[]; /* RS6000 and others want it this way. */ | |
34 | #endif | |
35 | #endif | |
36 | ||
9e70858b JB |
37 | /* SVr4 doesn't actually declare this in its #include files. */ |
38 | #ifdef USG5_4 | |
39 | extern long timezone; | |
40 | #endif | |
41 | ||
210b2b4f JB |
42 | #ifdef VMS |
43 | #ifdef VAXC | |
44 | #include "vmstime.h" | |
45 | #endif | |
46 | #endif | |
47 | ||
71068d78 KH |
48 | /* On some configurations (hpux8.0, X11R4), sys/time.h and X11/Xos.h |
49 | disagree about the name of the guard symbol. */ | |
c810639a | 50 | #ifdef HPUX |
71068d78 KH |
51 | #ifdef _STRUCT_TIMEVAL |
52 | #ifndef __TIMEVAL__ | |
53 | #define __TIMEVAL__ | |
54 | #endif | |
55 | #endif | |
c810639a | 56 | #endif |
10a4cc63 | 57 | \f |
f469625a JB |
58 | /* EMACS_TIME is the type to use to represent temporal intervals - |
59 | struct timeval on some systems, int on others. It can be passed as | |
88729235 | 60 | the timeout argument to the select system call. |
f469625a JB |
61 | |
62 | EMACS_SECS (TIME) is an rvalue for the seconds component of TIME. | |
63 | EMACS_SET_SECS (TIME, SECONDS) sets that to SECONDS. | |
64 | ||
65 | EMACS_HAS_USECS is defined iff EMACS_TIME has a usecs component. | |
7f86bdac JB |
66 | EMACS_USECS (TIME) is an rvalue for the microseconds component of TIME. |
67 | This returns zero if EMACS_TIME doesn't have a microseconds component. | |
68 | EMACS_SET_USECS (TIME, MICROSECONDS) sets that to MICROSECONDS. | |
69 | This does nothing if EMACS_TIME doesn't have a microseconds component. | |
f469625a JB |
70 | |
71 | EMACS_SET_SECS_USECS (TIME, SECS, USECS) sets both components of TIME. | |
72 | ||
73 | EMACS_GET_TIME (TIME) stores the current system time in TIME, which | |
74 | should be an lvalue. | |
f469625a JB |
75 | |
76 | EMACS_ADD_TIME (DEST, SRC1, SRC2) adds SRC1 to SRC2 and stores the | |
77 | result in DEST. SRC should not be negative. | |
78 | ||
79 | EMACS_SUB_TIME (DEST, SRC1, SRC2) subtracts SRC2 from SRC1 and | |
80 | stores the result in DEST. SRC should not be negative. | |
81 | EMACS_TIME_NEG_P (TIME) is true iff TIME is negative. | |
82 | ||
83 | */ | |
84 | ||
85 | #ifdef HAVE_TIMEVAL | |
86 | ||
722687f5 JB |
87 | #define EMACS_HAS_USECS |
88 | ||
f469625a JB |
89 | #define EMACS_TIME struct timeval |
90 | #define EMACS_SECS(time) ((time).tv_sec + 0) | |
91 | #define EMACS_USECS(time) ((time).tv_usec + 0) | |
92 | #define EMACS_SET_SECS(time, seconds) ((time).tv_sec = (seconds)) | |
7f86bdac | 93 | #define EMACS_SET_USECS(time, microseconds) ((time).tv_usec = (microseconds)) |
f469625a | 94 | |
4fb83f3c | 95 | /* On SVR4, the compiler may complain if given this extra BSD arg. */ |
af57e5a7 | 96 | #ifdef GETTIMEOFDAY_ONE_ARGUMENT |
4fb83f3c RS |
97 | #define EMACS_GET_TIME(time) \ |
98 | { \ | |
99 | gettimeofday (&(time)); \ | |
100 | } | |
af57e5a7 | 101 | #else /* not GETTIMEOFDAY_ONE_ARGUMENT */ |
f469625a JB |
102 | #define EMACS_GET_TIME(time) \ |
103 | { \ | |
10a4cc63 | 104 | struct timezone dummy; \ |
f469625a JB |
105 | gettimeofday (&(time), &dummy); \ |
106 | } | |
af57e5a7 | 107 | #endif /* not GETTIMEOFDAY_ONE_ARGUMENT */ |
f469625a JB |
108 | |
109 | #define EMACS_ADD_TIME(dest, src1, src2) \ | |
110 | { \ | |
111 | (dest).tv_sec = (src1).tv_sec + (src2).tv_sec; \ | |
112 | (dest).tv_usec = (src1).tv_usec + (src2).tv_usec; \ | |
113 | if ((dest).tv_usec > 1000000) \ | |
114 | (dest).tv_usec -= 1000000, (dest).tv_sec++; \ | |
115 | } | |
116 | ||
117 | #define EMACS_SUB_TIME(dest, src1, src2) \ | |
118 | { \ | |
119 | (dest).tv_sec = (src1).tv_sec - (src2).tv_sec; \ | |
120 | (dest).tv_usec = (src1).tv_usec - (src2).tv_usec; \ | |
121 | if ((dest).tv_usec < 0) \ | |
122 | (dest).tv_usec += 1000000, (dest).tv_sec--; \ | |
123 | } | |
124 | ||
125 | #define EMACS_TIME_NEG_P(time) \ | |
cf4138ad | 126 | ((long)(time).tv_sec < 0 \ |
f469625a | 127 | || ((time).tv_sec == 0 \ |
cf4138ad | 128 | && (long)(time).tv_usec < 0)) |
f469625a | 129 | |
10a4cc63 | 130 | #else /* ! defined (HAVE_TIMEVAL) */ |
f469625a JB |
131 | |
132 | #define EMACS_TIME int | |
133 | #define EMACS_SECS(time) (time) | |
ef15f270 | 134 | #define EMACS_USECS(time) 0 |
f469625a | 135 | #define EMACS_SET_SECS(time, seconds) ((time) = (seconds)) |
ef15f270 | 136 | #define EMACS_SET_USECS(time, usecs) 0 |
f469625a JB |
137 | |
138 | #define EMACS_GET_TIME(t) ((t) = time ((long *) 0)) | |
139 | #define EMACS_ADD_TIME(dest, src1, src2) ((dest) = (src1) + (src2)) | |
140 | #define EMACS_SUB_TIME(dest, src1, src2) ((dest) = (src1) - (src2)) | |
141 | #define EMACS_TIME_NEG_P(t) ((t) < 0) | |
142 | ||
10a4cc63 | 143 | #endif /* ! defined (HAVE_TIMEVAL) */ |
f469625a JB |
144 | |
145 | #define EMACS_SET_SECS_USECS(time, secs, usecs) \ | |
146 | (EMACS_SET_SECS (time, secs), EMACS_SET_USECS (time, usecs)) | |
147 | ||
c0c45059 | 148 | extern int set_file_times (); |