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10a4cc63 | 1 | /* systime.h - System-dependent definitions for time manipulations. |
0b5538bd | 2 | Copyright (C) 1993, 1994, 2002, 2003, 2004, |
114f9c96 | 3 | 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
f469625a JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
b9b1cc14 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
f469625a | 8 | it under the terms of the GNU General Public License as published by |
b9b1cc14 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
f469625a JB |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
b9b1cc14 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
f469625a | 19 | |
fb1b041d DL |
20 | #ifndef EMACS_SYSTIME_H |
21 | #define EMACS_SYSTIME_H | |
482fa053 | 22 | |
d712c26d | 23 | #ifdef TIME_WITH_SYS_TIME |
7b89707c | 24 | #include <sys/time.h> |
f469625a | 25 | #include <time.h> |
d712c26d | 26 | #else |
5cbdb356 JB |
27 | #ifdef HAVE_SYS_TIME_H |
28 | #include <sys/time.h> | |
d712c26d JB |
29 | #else |
30 | #include <time.h> | |
98f77753 | 31 | #endif |
b7cceaf1 | 32 | #endif |
7b89707c | 33 | |
2ffe7ef2 RS |
34 | #ifdef HAVE_TZNAME |
35 | #ifndef tzname /* For SGI. */ | |
36 | extern char *tzname[]; /* RS6000 and others want it this way. */ | |
37 | #endif | |
38 | #endif | |
39 | ||
9e70858b JB |
40 | /* SVr4 doesn't actually declare this in its #include files. */ |
41 | #ifdef USG5_4 | |
482fa053 | 42 | extern time_t timezone; |
9e70858b JB |
43 | #endif |
44 | ||
71068d78 KH |
45 | /* On some configurations (hpux8.0, X11R4), sys/time.h and X11/Xos.h |
46 | disagree about the name of the guard symbol. */ | |
c810639a | 47 | #ifdef HPUX |
71068d78 KH |
48 | #ifdef _STRUCT_TIMEVAL |
49 | #ifndef __TIMEVAL__ | |
50 | #define __TIMEVAL__ | |
51 | #endif | |
52 | #endif | |
c810639a | 53 | #endif |
10a4cc63 | 54 | \f |
f469625a JB |
55 | /* EMACS_TIME is the type to use to represent temporal intervals - |
56 | struct timeval on some systems, int on others. It can be passed as | |
88729235 | 57 | the timeout argument to the select system call. |
f469625a JB |
58 | |
59 | EMACS_SECS (TIME) is an rvalue for the seconds component of TIME. | |
60 | EMACS_SET_SECS (TIME, SECONDS) sets that to SECONDS. | |
61 | ||
e0f24100 | 62 | EMACS_HAS_USECS is defined if EMACS_TIME has a usecs component. |
7f86bdac JB |
63 | EMACS_USECS (TIME) is an rvalue for the microseconds component of TIME. |
64 | This returns zero if EMACS_TIME doesn't have a microseconds component. | |
65 | EMACS_SET_USECS (TIME, MICROSECONDS) sets that to MICROSECONDS. | |
66 | This does nothing if EMACS_TIME doesn't have a microseconds component. | |
f469625a JB |
67 | |
68 | EMACS_SET_SECS_USECS (TIME, SECS, USECS) sets both components of TIME. | |
69 | ||
70 | EMACS_GET_TIME (TIME) stores the current system time in TIME, which | |
71 | should be an lvalue. | |
f469625a JB |
72 | |
73 | EMACS_ADD_TIME (DEST, SRC1, SRC2) adds SRC1 to SRC2 and stores the | |
74 | result in DEST. SRC should not be negative. | |
75 | ||
76 | EMACS_SUB_TIME (DEST, SRC1, SRC2) subtracts SRC2 from SRC1 and | |
177c0ea7 | 77 | stores the result in DEST. SRC should not be negative. |
e0f24100 | 78 | EMACS_TIME_NEG_P (TIME) is true if TIME is negative. |
f469625a JB |
79 | |
80 | */ | |
81 | ||
82 | #ifdef HAVE_TIMEVAL | |
83 | ||
722687f5 JB |
84 | #define EMACS_HAS_USECS |
85 | ||
f469625a JB |
86 | #define EMACS_TIME struct timeval |
87 | #define EMACS_SECS(time) ((time).tv_sec + 0) | |
88 | #define EMACS_USECS(time) ((time).tv_usec + 0) | |
89 | #define EMACS_SET_SECS(time, seconds) ((time).tv_sec = (seconds)) | |
7f86bdac | 90 | #define EMACS_SET_USECS(time, microseconds) ((time).tv_usec = (microseconds)) |
f469625a | 91 | |
4fb83f3c | 92 | /* On SVR4, the compiler may complain if given this extra BSD arg. */ |
af57e5a7 | 93 | #ifdef GETTIMEOFDAY_ONE_ARGUMENT |
f9ee84a3 | 94 | #define EMACS_GET_TIME(time) gettimeofday (&(time)) |
af57e5a7 | 95 | #else /* not GETTIMEOFDAY_ONE_ARGUMENT */ |
97dfd1a1 DL |
96 | /* Presumably the second arg is ignored. */ |
97 | #define EMACS_GET_TIME(time) gettimeofday (&(time), NULL) | |
af57e5a7 | 98 | #endif /* not GETTIMEOFDAY_ONE_ARGUMENT */ |
f469625a | 99 | |
f9ee84a3 GM |
100 | #define EMACS_ADD_TIME(dest, src1, src2) \ |
101 | do { \ | |
102 | (dest).tv_sec = (src1).tv_sec + (src2).tv_sec; \ | |
103 | (dest).tv_usec = (src1).tv_usec + (src2).tv_usec; \ | |
104 | if ((dest).tv_usec > 1000000) \ | |
105 | (dest).tv_usec -= 1000000, (dest).tv_sec++; \ | |
106 | } while (0) | |
107 | ||
108 | #define EMACS_SUB_TIME(dest, src1, src2) \ | |
109 | do { \ | |
110 | (dest).tv_sec = (src1).tv_sec - (src2).tv_sec; \ | |
111 | (dest).tv_usec = (src1).tv_usec - (src2).tv_usec; \ | |
112 | if ((dest).tv_usec < 0) \ | |
113 | (dest).tv_usec += 1000000, (dest).tv_sec--; \ | |
114 | } while (0) | |
f469625a JB |
115 | |
116 | #define EMACS_TIME_NEG_P(time) \ | |
cf4138ad | 117 | ((long)(time).tv_sec < 0 \ |
f469625a | 118 | || ((time).tv_sec == 0 \ |
cf4138ad | 119 | && (long)(time).tv_usec < 0)) |
f469625a | 120 | |
10a4cc63 | 121 | #else /* ! defined (HAVE_TIMEVAL) */ |
f469625a JB |
122 | |
123 | #define EMACS_TIME int | |
124 | #define EMACS_SECS(time) (time) | |
ef15f270 | 125 | #define EMACS_USECS(time) 0 |
f469625a | 126 | #define EMACS_SET_SECS(time, seconds) ((time) = (seconds)) |
ef15f270 | 127 | #define EMACS_SET_USECS(time, usecs) 0 |
f469625a JB |
128 | |
129 | #define EMACS_GET_TIME(t) ((t) = time ((long *) 0)) | |
130 | #define EMACS_ADD_TIME(dest, src1, src2) ((dest) = (src1) + (src2)) | |
131 | #define EMACS_SUB_TIME(dest, src1, src2) ((dest) = (src1) - (src2)) | |
132 | #define EMACS_TIME_NEG_P(t) ((t) < 0) | |
133 | ||
10a4cc63 | 134 | #endif /* ! defined (HAVE_TIMEVAL) */ |
f469625a JB |
135 | |
136 | #define EMACS_SET_SECS_USECS(time, secs, usecs) \ | |
137 | (EMACS_SET_SECS (time, secs), EMACS_SET_USECS (time, usecs)) | |
138 | ||
383e0970 | 139 | extern int set_file_times (const char *, EMACS_TIME, EMACS_TIME); |
c53a6701 | 140 | |
43f15d4a | 141 | /* defined in keyboard.c */ |
383e0970 | 142 | extern void set_waiting_for_input (EMACS_TIME *); |
43f15d4a | 143 | |
fa8459a3 DN |
144 | /* When lisp.h is not included Lisp_Object is not defined (this can |
145 | happen when this files is used outside the src directory). | |
146 | Use GCPRO1 to determine if lisp.h was included. */ | |
147 | #ifdef GCPRO1 | |
148 | /* defined in dired.c */ | |
383e0970 | 149 | extern Lisp_Object make_time (time_t); |
26469a38 DN |
150 | |
151 | /* defined in editfns.c*/ | |
152 | extern int lisp_time_argument (Lisp_Object, time_t *, int *); | |
fa8459a3 DN |
153 | #endif |
154 | ||
c53a6701 | 155 | /* Compare times T1 and T2. Value is 0 if T1 and T2 are the same. |
12c01aef EZ |
156 | Value is < 0 if T1 is less than T2. Value is > 0 otherwise. (Cast |
157 | to long is for those platforms where time_t is an unsigned | |
158 | type, and where otherwise T1 will always be grater than T2.) */ | |
159 | ||
160 | #define EMACS_TIME_CMP(T1, T2) \ | |
161 | ((long)EMACS_SECS (T1) - (long)EMACS_SECS (T2) \ | |
162 | + (EMACS_SECS (T1) == EMACS_SECS (T2) \ | |
163 | ? EMACS_USECS (T1) - EMACS_USECS (T2) \ | |
c53a6701 GM |
164 | : 0)) |
165 | ||
166 | /* Compare times T1 and T2 for equality, inequality etc. */ | |
167 | ||
27a9e9b3 GM |
168 | #define EMACS_TIME_EQ(T1, T2) (EMACS_TIME_CMP (T1, T2) == 0) |
169 | #define EMACS_TIME_NE(T1, T2) (EMACS_TIME_CMP (T1, T2) != 0) | |
170 | #define EMACS_TIME_GT(T1, T2) (EMACS_TIME_CMP (T1, T2) > 0) | |
171 | #define EMACS_TIME_GE(T1, T2) (EMACS_TIME_CMP (T1, T2) >= 0) | |
172 | #define EMACS_TIME_LT(T1, T2) (EMACS_TIME_CMP (T1, T2) < 0) | |
173 | #define EMACS_TIME_LE(T1, T2) (EMACS_TIME_CMP (T1, T2) <= 0) | |
c53a6701 | 174 | |
fb1b041d | 175 | #endif /* EMACS_SYSTIME_H */ |
ab5796a9 MB |
176 | |
177 | /* arch-tag: dcb79915-cf99-4bce-9778-aade71d07651 | |
178 | (do not change this comment) */ |