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10a4cc63 | 1 | /* systime.h - System-dependent definitions for time manipulations. |
acaf905b | 2 | Copyright (C) 1993-1994, 2002-2012 Free Software Foundation, Inc. |
f469625a JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
b9b1cc14 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
f469625a | 7 | it under the terms of the GNU General Public License as published by |
b9b1cc14 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
f469625a JB |
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 | |
b9b1cc14 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
f469625a | 18 | |
fb1b041d DL |
19 | #ifndef EMACS_SYSTIME_H |
20 | #define EMACS_SYSTIME_H | |
482fa053 | 21 | |
d712c26d | 22 | #ifdef TIME_WITH_SYS_TIME |
7b89707c | 23 | #include <sys/time.h> |
f469625a | 24 | #include <time.h> |
d712c26d | 25 | #else |
5cbdb356 JB |
26 | #ifdef HAVE_SYS_TIME_H |
27 | #include <sys/time.h> | |
d712c26d JB |
28 | #else |
29 | #include <time.h> | |
98f77753 | 30 | #endif |
b7cceaf1 | 31 | #endif |
7b89707c | 32 | |
89d1bd22 PE |
33 | #ifdef emacs |
34 | # ifdef HAVE_X_WINDOWS | |
35 | # include <X11/X.h> | |
36 | # else | |
08dc5ae6 | 37 | typedef unsigned long Time; |
89d1bd22 | 38 | # endif |
08dc5ae6 PE |
39 | #endif |
40 | ||
71068d78 KH |
41 | /* On some configurations (hpux8.0, X11R4), sys/time.h and X11/Xos.h |
42 | disagree about the name of the guard symbol. */ | |
c810639a | 43 | #ifdef HPUX |
71068d78 KH |
44 | #ifdef _STRUCT_TIMEVAL |
45 | #ifndef __TIMEVAL__ | |
46 | #define __TIMEVAL__ | |
47 | #endif | |
48 | #endif | |
c810639a | 49 | #endif |
10a4cc63 | 50 | \f |
f469625a JB |
51 | /* EMACS_TIME is the type to use to represent temporal intervals - |
52 | struct timeval on some systems, int on others. It can be passed as | |
88729235 | 53 | the timeout argument to the select system call. |
f469625a JB |
54 | |
55 | EMACS_SECS (TIME) is an rvalue for the seconds component of TIME. | |
56 | EMACS_SET_SECS (TIME, SECONDS) sets that to SECONDS. | |
57 | ||
e0f24100 | 58 | EMACS_HAS_USECS is defined if EMACS_TIME has a usecs component. |
7f86bdac JB |
59 | EMACS_USECS (TIME) is an rvalue for the microseconds component of TIME. |
60 | This returns zero if EMACS_TIME doesn't have a microseconds component. | |
61 | EMACS_SET_USECS (TIME, MICROSECONDS) sets that to MICROSECONDS. | |
62 | This does nothing if EMACS_TIME doesn't have a microseconds component. | |
f469625a JB |
63 | |
64 | EMACS_SET_SECS_USECS (TIME, SECS, USECS) sets both components of TIME. | |
65 | ||
66 | EMACS_GET_TIME (TIME) stores the current system time in TIME, which | |
67 | should be an lvalue. | |
f469625a JB |
68 | |
69 | EMACS_ADD_TIME (DEST, SRC1, SRC2) adds SRC1 to SRC2 and stores the | |
70 | result in DEST. SRC should not be negative. | |
71 | ||
72 | EMACS_SUB_TIME (DEST, SRC1, SRC2) subtracts SRC2 from SRC1 and | |
177c0ea7 | 73 | stores the result in DEST. SRC should not be negative. |
e0f24100 | 74 | EMACS_TIME_NEG_P (TIME) is true if TIME is negative. |
f469625a JB |
75 | |
76 | */ | |
77 | ||
78 | #ifdef HAVE_TIMEVAL | |
79 | ||
722687f5 JB |
80 | #define EMACS_HAS_USECS |
81 | ||
f469625a JB |
82 | #define EMACS_TIME struct timeval |
83 | #define EMACS_SECS(time) ((time).tv_sec + 0) | |
84 | #define EMACS_USECS(time) ((time).tv_usec + 0) | |
85 | #define EMACS_SET_SECS(time, seconds) ((time).tv_sec = (seconds)) | |
7f86bdac | 86 | #define EMACS_SET_USECS(time, microseconds) ((time).tv_usec = (microseconds)) |
f469625a | 87 | |
4fb83f3c | 88 | /* On SVR4, the compiler may complain if given this extra BSD arg. */ |
af57e5a7 | 89 | #ifdef GETTIMEOFDAY_ONE_ARGUMENT |
f9ee84a3 | 90 | #define EMACS_GET_TIME(time) gettimeofday (&(time)) |
af57e5a7 | 91 | #else /* not GETTIMEOFDAY_ONE_ARGUMENT */ |
97dfd1a1 DL |
92 | /* Presumably the second arg is ignored. */ |
93 | #define EMACS_GET_TIME(time) gettimeofday (&(time), NULL) | |
af57e5a7 | 94 | #endif /* not GETTIMEOFDAY_ONE_ARGUMENT */ |
f469625a | 95 | |
f9ee84a3 GM |
96 | #define EMACS_ADD_TIME(dest, src1, src2) \ |
97 | do { \ | |
98 | (dest).tv_sec = (src1).tv_sec + (src2).tv_sec; \ | |
99 | (dest).tv_usec = (src1).tv_usec + (src2).tv_usec; \ | |
100 | if ((dest).tv_usec > 1000000) \ | |
101 | (dest).tv_usec -= 1000000, (dest).tv_sec++; \ | |
102 | } while (0) | |
103 | ||
104 | #define EMACS_SUB_TIME(dest, src1, src2) \ | |
105 | do { \ | |
106 | (dest).tv_sec = (src1).tv_sec - (src2).tv_sec; \ | |
107 | (dest).tv_usec = (src1).tv_usec - (src2).tv_usec; \ | |
108 | if ((dest).tv_usec < 0) \ | |
109 | (dest).tv_usec += 1000000, (dest).tv_sec--; \ | |
110 | } while (0) | |
f469625a JB |
111 | |
112 | #define EMACS_TIME_NEG_P(time) \ | |
cf4138ad | 113 | ((long)(time).tv_sec < 0 \ |
f469625a | 114 | || ((time).tv_sec == 0 \ |
cf4138ad | 115 | && (long)(time).tv_usec < 0)) |
f469625a | 116 | |
10a4cc63 | 117 | #else /* ! defined (HAVE_TIMEVAL) */ |
f469625a JB |
118 | |
119 | #define EMACS_TIME int | |
120 | #define EMACS_SECS(time) (time) | |
ef15f270 | 121 | #define EMACS_USECS(time) 0 |
f469625a | 122 | #define EMACS_SET_SECS(time, seconds) ((time) = (seconds)) |
ef15f270 | 123 | #define EMACS_SET_USECS(time, usecs) 0 |
f469625a JB |
124 | |
125 | #define EMACS_GET_TIME(t) ((t) = time ((long *) 0)) | |
126 | #define EMACS_ADD_TIME(dest, src1, src2) ((dest) = (src1) + (src2)) | |
127 | #define EMACS_SUB_TIME(dest, src1, src2) ((dest) = (src1) - (src2)) | |
128 | #define EMACS_TIME_NEG_P(t) ((t) < 0) | |
129 | ||
10a4cc63 | 130 | #endif /* ! defined (HAVE_TIMEVAL) */ |
f469625a JB |
131 | |
132 | #define EMACS_SET_SECS_USECS(time, secs, usecs) \ | |
133 | (EMACS_SET_SECS (time, secs), EMACS_SET_USECS (time, usecs)) | |
134 | ||
383e0970 | 135 | extern int set_file_times (const char *, EMACS_TIME, EMACS_TIME); |
c53a6701 | 136 | |
43f15d4a | 137 | /* defined in keyboard.c */ |
383e0970 | 138 | extern void set_waiting_for_input (EMACS_TIME *); |
43f15d4a | 139 | |
fa8459a3 DN |
140 | /* When lisp.h is not included Lisp_Object is not defined (this can |
141 | happen when this files is used outside the src directory). | |
142 | Use GCPRO1 to determine if lisp.h was included. */ | |
143 | #ifdef GCPRO1 | |
26469a38 | 144 | /* defined in editfns.c*/ |
8be6f318 | 145 | extern Lisp_Object make_time (time_t); |
26469a38 | 146 | extern int lisp_time_argument (Lisp_Object, time_t *, int *); |
fa8459a3 DN |
147 | #endif |
148 | ||
c53a6701 | 149 | /* Compare times T1 and T2. Value is 0 if T1 and T2 are the same. |
12c01aef EZ |
150 | Value is < 0 if T1 is less than T2. Value is > 0 otherwise. (Cast |
151 | to long is for those platforms where time_t is an unsigned | |
152 | type, and where otherwise T1 will always be grater than T2.) */ | |
153 | ||
154 | #define EMACS_TIME_CMP(T1, T2) \ | |
155 | ((long)EMACS_SECS (T1) - (long)EMACS_SECS (T2) \ | |
156 | + (EMACS_SECS (T1) == EMACS_SECS (T2) \ | |
157 | ? EMACS_USECS (T1) - EMACS_USECS (T2) \ | |
c53a6701 GM |
158 | : 0)) |
159 | ||
160 | /* Compare times T1 and T2 for equality, inequality etc. */ | |
161 | ||
27a9e9b3 GM |
162 | #define EMACS_TIME_EQ(T1, T2) (EMACS_TIME_CMP (T1, T2) == 0) |
163 | #define EMACS_TIME_NE(T1, T2) (EMACS_TIME_CMP (T1, T2) != 0) | |
164 | #define EMACS_TIME_GT(T1, T2) (EMACS_TIME_CMP (T1, T2) > 0) | |
165 | #define EMACS_TIME_GE(T1, T2) (EMACS_TIME_CMP (T1, T2) >= 0) | |
166 | #define EMACS_TIME_LT(T1, T2) (EMACS_TIME_CMP (T1, T2) < 0) | |
167 | #define EMACS_TIME_LE(T1, T2) (EMACS_TIME_CMP (T1, T2) <= 0) | |
c53a6701 | 168 | |
fb1b041d | 169 | #endif /* EMACS_SYSTIME_H */ |