Commit | Line | Data |
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d40e1ca8 | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011 Free Software Foundation, Inc. |
1c299a6b | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
1c299a6b | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
1c299a6b | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
0f2d19dd JB |
20 | \f |
21 | ||
464ee095 KR |
22 | /* _POSIX_C_SOURCE is not defined always, because it causes problems on some |
23 | systems, notably | |
24 | ||
25 | - FreeBSD loses all BSD and XOPEN defines. | |
26 | - glibc loses some things like CLK_TCK. | |
27 | - On MINGW it conflicts with the pthread headers. | |
28 | ||
29 | But on HP-UX _POSIX_C_SOURCE is needed, as noted, for gmtime_r. | |
30 | ||
31 | Perhaps a configure test could figure out what _POSIX_C_SOURCE gives and | |
32 | what it takes away, and decide from that whether to use it, instead of | |
33 | hard coding __hpux. */ | |
34 | ||
2baec6a9 LC |
35 | #ifndef _REENTRANT |
36 | # define _REENTRANT /* ask solaris for gmtime_r prototype */ | |
37 | #endif | |
464ee095 | 38 | #ifdef __hpux |
95f31774 | 39 | #define _POSIX_C_SOURCE 199506L /* for gmtime_r prototype */ |
edea856c | 40 | #endif |
3c61e80f | 41 | |
dbb605f5 | 42 | #ifdef HAVE_CONFIG_H |
3cf2f52d RB |
43 | # include <config.h> |
44 | #endif | |
45 | ||
0f2d19dd | 46 | #include <stdio.h> |
e6e2e95a | 47 | #include <errno.h> |
69f23174 | 48 | #include <strftime.h> |
587a3355 | 49 | #include <unistr.h> |
e6e2e95a | 50 | |
a0599745 | 51 | #include "libguile/_scm.h" |
4e047c3e | 52 | #include "libguile/async.h" |
a0599745 MD |
53 | #include "libguile/feature.h" |
54 | #include "libguile/strings.h" | |
55 | #include "libguile/vectors.h" | |
cc95e00a | 56 | #include "libguile/dynwind.h" |
587a3355 | 57 | #include "libguile/strings.h" |
20e6290e | 58 | |
a0599745 MD |
59 | #include "libguile/validate.h" |
60 | #include "libguile/stime.h" | |
20e6290e | 61 | |
0f2d19dd JB |
62 | #ifdef HAVE_UNISTD_H |
63 | #include <unistd.h> | |
64 | #endif | |
65 | ||
66 | \f | |
4a42658f AW |
67 | #ifdef HAVE_CLOCK_GETTIME |
68 | # include <time.h> | |
69 | #endif | |
70 | ||
71 | #ifdef HAVE_SYS_TYPES_H | |
72 | # include <sys/types.h> | |
73 | #endif | |
0f2d19dd | 74 | |
a15e6dcc MV |
75 | #ifdef HAVE_STRING_H |
76 | #include <string.h> | |
77 | #endif | |
78 | ||
b1978258 GH |
79 | #ifdef HAVE_SYS_TIMES_H |
80 | # include <sys/times.h> | |
81 | #endif | |
82 | ||
83 | #ifdef HAVE_SYS_TIMEB_H | |
84 | # include <sys/timeb.h> | |
85 | #endif | |
0f2d19dd | 86 | |
b9525b92 GH |
87 | #ifndef tzname /* For SGI. */ |
88 | extern char *tzname[]; /* RS6000 and others reject char **tzname. */ | |
89 | #endif | |
79dcdf51 MV |
90 | #if defined (__MINGW32__) |
91 | # define tzname _tzname | |
92 | #endif | |
b9525b92 | 93 | |
3c61e80f | 94 | #if ! HAVE_DECL_STRPTIME |
4d3bacdd JB |
95 | extern char *strptime (); |
96 | #endif | |
97 | ||
0f2d19dd JB |
98 | #ifdef __STDC__ |
99 | # define timet time_t | |
100 | #else | |
101 | # define timet long | |
102 | #endif | |
103 | ||
eb7e1603 | 104 | |
4a42658f AW |
105 | #if SCM_SIZEOF_LONG >= 8 && defined HAVE_CLOCK_GETTIME |
106 | /* Nanoseconds on 64-bit systems with POSIX timers. */ | |
107 | #define TIME_UNITS_PER_SECOND 1000000000 | |
108 | #else | |
109 | /* Milliseconds for everyone else. */ | |
110 | #define TIME_UNITS_PER_SECOND 1000 | |
111 | #endif | |
112 | ||
113 | long scm_c_time_units_per_second = TIME_UNITS_PER_SECOND; | |
114 | ||
115 | static long | |
116 | time_from_seconds_and_nanoseconds (long s, long ns) | |
117 | { | |
118 | return s * TIME_UNITS_PER_SECOND | |
119 | + ns / (1000000000 / TIME_UNITS_PER_SECOND); | |
120 | } | |
121 | ||
122 | ||
123 | /* A runtime-selectable mechanism to choose a timing mechanism. Really | |
124 | we want to use POSIX timers, but that's not always possible. Notably, | |
125 | the user may have everything she needs at compile-time, but if she's | |
126 | running on an SMP machine without a common clock source, she can't | |
127 | use POSIX CPUTIME clocks. */ | |
128 | static long (*get_internal_real_time) (void); | |
129 | static long (*get_internal_run_time) (void); | |
130 | ||
131 | ||
132 | #ifdef HAVE_CLOCK_GETTIME | |
133 | struct timespec posix_real_time_base; | |
134 | ||
135 | static long | |
136 | get_internal_real_time_posix_timer (void) | |
137 | { | |
138 | struct timespec ts; | |
139 | clock_gettime (CLOCK_REALTIME, &ts); | |
140 | return time_from_seconds_and_nanoseconds | |
141 | (ts.tv_sec - posix_real_time_base.tv_sec, | |
142 | ts.tv_nsec - posix_real_time_base.tv_nsec); | |
143 | } | |
144 | ||
a02a6067 AW |
145 | #if defined _POSIX_CPUTIME && defined CLOCK_PROCESS_CPUTIME_ID |
146 | /* You see, FreeBSD defines _POSIX_CPUTIME but not | |
147 | CLOCK_PROCESS_CPUTIME_ID. */ | |
148 | #define HAVE_POSIX_CPUTIME 1 | |
149 | ||
4a42658f AW |
150 | struct timespec posix_run_time_base; |
151 | ||
152 | static long | |
153 | get_internal_run_time_posix_timer (void) | |
154 | { | |
155 | struct timespec ts; | |
156 | clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &ts); | |
157 | return time_from_seconds_and_nanoseconds | |
158 | (ts.tv_sec - posix_run_time_base.tv_sec, | |
159 | ts.tv_nsec - posix_run_time_base.tv_nsec); | |
160 | } | |
161 | #endif /* _POSIX_CPUTIME */ | |
162 | #endif /* HAVE_CLOCKTIME */ | |
163 | ||
164 | ||
165 | #ifdef HAVE_GETTIMEOFDAY | |
166 | struct timeval gettimeofday_real_time_base; | |
167 | ||
168 | static long | |
169 | get_internal_real_time_gettimeofday (void) | |
170 | { | |
171 | struct timeval tv; | |
172 | gettimeofday (&tv, NULL); | |
173 | return time_from_seconds_and_nanoseconds | |
174 | (tv.tv_sec - gettimeofday_real_time_base.tv_sec, | |
175 | (tv.tv_usec - gettimeofday_real_time_base.tv_usec) * 1000); | |
176 | } | |
177 | #endif | |
178 | ||
179 | ||
180 | #if defined HAVE_TIMES | |
181 | static long ticks_per_second; | |
182 | ||
183 | static long | |
184 | get_internal_run_time_times (void) | |
0f2d19dd JB |
185 | { |
186 | struct tms time_buffer; | |
187 | times(&time_buffer); | |
4a42658f AW |
188 | return (time_buffer.tms_utime + time_buffer.tms_stime) |
189 | * TIME_UNITS_PER_SECOND / ticks_per_second; | |
0f2d19dd | 190 | } |
0f2d19dd JB |
191 | #endif |
192 | ||
4a42658f AW |
193 | static timet fallback_real_time_base; |
194 | static long | |
195 | get_internal_real_time_fallback (void) | |
196 | { | |
197 | return time_from_seconds_and_nanoseconds | |
198 | ((long) time (NULL) - fallback_real_time_base, 0); | |
199 | } | |
200 | ||
1bbd0b84 | 201 | |
1c299a6b | 202 | SCM_DEFINE (scm_get_internal_real_time, "get-internal-real-time", 0, 0, 0, |
1bbd0b84 | 203 | (), |
1e6808ea MG |
204 | "Return the number of time units since the interpreter was\n" |
205 | "started.") | |
1bbd0b84 | 206 | #define FUNC_NAME s_scm_get_internal_real_time |
0f2d19dd | 207 | { |
4a42658f | 208 | return scm_from_long (get_internal_real_time ()); |
0f2d19dd | 209 | } |
1bbd0b84 GB |
210 | #undef FUNC_NAME |
211 | ||
0f2d19dd | 212 | |
f25f761d | 213 | #ifdef HAVE_TIMES |
1c299a6b | 214 | SCM_DEFINE (scm_times, "times", 0, 0, 0, |
1bbd0b84 | 215 | (void), |
1e6808ea MG |
216 | "Return an object with information about real and processor\n" |
217 | "time. The following procedures accept such an object as an\n" | |
218 | "argument and return a selected component:\n" | |
219 | "\n" | |
b380b885 MD |
220 | "@table @code\n" |
221 | "@item tms:clock\n" | |
222 | "The current real time, expressed as time units relative to an\n" | |
223 | "arbitrary base.\n" | |
224 | "@item tms:utime\n" | |
225 | "The CPU time units used by the calling process.\n" | |
226 | "@item tms:stime\n" | |
1e6808ea MG |
227 | "The CPU time units used by the system on behalf of the calling\n" |
228 | "process.\n" | |
b380b885 | 229 | "@item tms:cutime\n" |
1e6808ea MG |
230 | "The CPU time units used by terminated child processes of the\n" |
231 | "calling process, whose status has been collected (e.g., using\n" | |
232 | "@code{waitpid}).\n" | |
b380b885 | 233 | "@item tms:cstime\n" |
1e6808ea | 234 | "Similarly, the CPU times units used by the system on behalf of\n" |
b380b885 MD |
235 | "terminated child processes.\n" |
236 | "@end table") | |
1bbd0b84 | 237 | #define FUNC_NAME s_scm_times |
6afcd3b2 | 238 | { |
6afcd3b2 GH |
239 | struct tms t; |
240 | clock_t rv; | |
4a42658f | 241 | SCM factor; |
6afcd3b2 | 242 | |
00ffa0e7 | 243 | SCM result = scm_c_make_vector (5, SCM_UNDEFINED); |
6afcd3b2 GH |
244 | rv = times (&t); |
245 | if (rv == -1) | |
1bbd0b84 | 246 | SCM_SYSERROR; |
4a42658f AW |
247 | |
248 | factor = scm_quotient (scm_from_long (TIME_UNITS_PER_SECOND), | |
249 | scm_from_long (ticks_per_second)); | |
250 | ||
251 | SCM_SIMPLE_VECTOR_SET (result, 0, | |
252 | scm_product (scm_from_long (rv), factor)); | |
253 | SCM_SIMPLE_VECTOR_SET (result, 1, | |
254 | scm_product (scm_from_long (t.tms_utime), factor)); | |
255 | SCM_SIMPLE_VECTOR_SET (result, 2, | |
256 | scm_product (scm_from_long (t.tms_stime), factor)); | |
257 | SCM_SIMPLE_VECTOR_SET (result ,3, | |
258 | scm_product (scm_from_long (t.tms_cutime), factor)); | |
259 | SCM_SIMPLE_VECTOR_SET (result, 4, | |
260 | scm_product (scm_from_long (t.tms_cstime), factor)); | |
6afcd3b2 | 261 | return result; |
6afcd3b2 | 262 | } |
1bbd0b84 | 263 | #undef FUNC_NAME |
f25f761d | 264 | #endif /* HAVE_TIMES */ |
6afcd3b2 | 265 | |
1c299a6b | 266 | long |
4a42658f | 267 | scm_c_get_internal_run_time (void) |
1c299a6b | 268 | { |
4a42658f | 269 | return get_internal_run_time (); |
1c299a6b ML |
270 | } |
271 | ||
272 | SCM_DEFINE (scm_get_internal_run_time, "get-internal-run-time", 0, 0, 0, | |
1bbd0b84 | 273 | (void), |
1e6808ea MG |
274 | "Return the number of time units of processor time used by the\n" |
275 | "interpreter. Both @emph{system} and @emph{user} time are\n" | |
276 | "included but subprocesses are not.") | |
1bbd0b84 | 277 | #define FUNC_NAME s_scm_get_internal_run_time |
0f2d19dd | 278 | { |
b9bd8526 | 279 | return scm_from_long (scm_c_get_internal_run_time ()); |
0f2d19dd | 280 | } |
1bbd0b84 | 281 | #undef FUNC_NAME |
0f2d19dd | 282 | |
f40771d8 KR |
283 | /* For reference, note that current-time and gettimeofday both should be |
284 | protected against setzone/restorezone changes in another thread, since on | |
285 | DOS the system time is normally kept as local time, which means TZ | |
286 | affects the return from current-time and gettimeofday. Not sure if DJGPP | |
287 | etc actually has concurrent multi-threading, but it seems prudent not to | |
288 | make assumptions about this. */ | |
289 | ||
1c299a6b | 290 | SCM_DEFINE (scm_current_time, "current-time", 0, 0, 0, |
1bbd0b84 | 291 | (void), |
1e6808ea MG |
292 | "Return the number of seconds since 1970-01-01 00:00:00 UTC,\n" |
293 | "excluding leap seconds.") | |
1bbd0b84 | 294 | #define FUNC_NAME s_scm_current_time |
0f2d19dd | 295 | { |
19468eff GH |
296 | timet timv; |
297 | ||
9de87eea | 298 | SCM_CRITICAL_SECTION_START; |
763313a2 | 299 | timv = time (NULL); |
9de87eea | 300 | SCM_CRITICAL_SECTION_END; |
763313a2 KR |
301 | if (timv == -1) |
302 | SCM_MISC_ERROR ("current time not available", SCM_EOL); | |
b9bd8526 | 303 | return scm_from_long (timv); |
19468eff | 304 | } |
1bbd0b84 | 305 | #undef FUNC_NAME |
19468eff | 306 | |
1c299a6b | 307 | SCM_DEFINE (scm_gettimeofday, "gettimeofday", 0, 0, 0, |
1bbd0b84 | 308 | (void), |
1e6808ea MG |
309 | "Return a pair containing the number of seconds and microseconds\n" |
310 | "since 1970-01-01 00:00:00 UTC, excluding leap seconds. Note:\n" | |
311 | "whether true microsecond resolution is available depends on the\n" | |
312 | "operating system.") | |
1bbd0b84 | 313 | #define FUNC_NAME s_scm_gettimeofday |
19468eff GH |
314 | { |
315 | #ifdef HAVE_GETTIMEOFDAY | |
316 | struct timeval time; | |
317 | ||
4a42658f AW |
318 | if (gettimeofday (&time, NULL)) |
319 | SCM_SYSERROR; | |
320 | ||
b9bd8526 MV |
321 | return scm_cons (scm_from_long (time.tv_sec), |
322 | scm_from_long (time.tv_usec)); | |
19468eff | 323 | #else |
4a42658f AW |
324 | timet t = time (NULL); |
325 | if (errno) | |
326 | SCM_SYSERROR; | |
327 | else | |
328 | return scm_cons (scm_from_long ((long)t), SCM_INUM0); | |
19468eff GH |
329 | #endif |
330 | } | |
1bbd0b84 | 331 | #undef FUNC_NAME |
19468eff GH |
332 | |
333 | static SCM | |
d6d9e957 | 334 | filltime (struct tm *bd_time, int zoff, const char *zname) |
19468eff | 335 | { |
00ffa0e7 | 336 | SCM result = scm_c_make_vector (11, SCM_UNDEFINED); |
19468eff | 337 | |
4057a3e0 MV |
338 | SCM_SIMPLE_VECTOR_SET (result,0, scm_from_int (bd_time->tm_sec)); |
339 | SCM_SIMPLE_VECTOR_SET (result,1, scm_from_int (bd_time->tm_min)); | |
340 | SCM_SIMPLE_VECTOR_SET (result,2, scm_from_int (bd_time->tm_hour)); | |
341 | SCM_SIMPLE_VECTOR_SET (result,3, scm_from_int (bd_time->tm_mday)); | |
342 | SCM_SIMPLE_VECTOR_SET (result,4, scm_from_int (bd_time->tm_mon)); | |
343 | SCM_SIMPLE_VECTOR_SET (result,5, scm_from_int (bd_time->tm_year)); | |
344 | SCM_SIMPLE_VECTOR_SET (result,6, scm_from_int (bd_time->tm_wday)); | |
345 | SCM_SIMPLE_VECTOR_SET (result,7, scm_from_int (bd_time->tm_yday)); | |
346 | SCM_SIMPLE_VECTOR_SET (result,8, scm_from_int (bd_time->tm_isdst)); | |
347 | SCM_SIMPLE_VECTOR_SET (result,9, scm_from_int (zoff)); | |
348 | SCM_SIMPLE_VECTOR_SET (result,10, (zname | |
349 | ? scm_from_locale_string (zname) | |
350 | : SCM_BOOL_F)); | |
19468eff GH |
351 | return result; |
352 | } | |
353 | ||
ef9ff3fd | 354 | static char tzvar[3] = "TZ"; |
ef9ff3fd | 355 | |
38c1d3c4 GH |
356 | /* if zone is set, create a temporary environment with only a TZ |
357 | string. other threads or interrupt handlers shouldn't be allowed | |
358 | to run until the corresponding restorezone is called. hence the use | |
359 | of a static variable for tmpenv is no big deal. */ | |
ef9ff3fd | 360 | static char ** |
3eeba8d4 | 361 | setzone (SCM zone, int pos, const char *subr) |
b9525b92 | 362 | { |
ef9ff3fd | 363 | char **oldenv = 0; |
b9525b92 GH |
364 | |
365 | if (!SCM_UNBNDP (zone)) | |
366 | { | |
ef9ff3fd | 367 | static char *tmpenv[2]; |
b9525b92 | 368 | char *buf; |
7f9994d9 MV |
369 | size_t zone_len; |
370 | ||
371 | zone_len = scm_to_locale_stringbuf (zone, NULL, 0); | |
372 | buf = scm_malloc (zone_len + sizeof (tzvar) + 1); | |
373 | strcpy (buf, tzvar); | |
374 | buf[sizeof(tzvar)-1] = '='; | |
375 | scm_to_locale_stringbuf (zone, buf+sizeof(tzvar), zone_len); | |
376 | buf[sizeof(tzvar)+zone_len] = '\0'; | |
ef9ff3fd GH |
377 | oldenv = environ; |
378 | tmpenv[0] = buf; | |
379 | tmpenv[1] = 0; | |
380 | environ = tmpenv; | |
b9525b92 | 381 | } |
ef9ff3fd | 382 | return oldenv; |
b9525b92 GH |
383 | } |
384 | ||
385 | static void | |
e81d98ec | 386 | restorezone (SCM zone, char **oldenv, const char *subr SCM_UNUSED) |
b9525b92 GH |
387 | { |
388 | if (!SCM_UNBNDP (zone)) | |
389 | { | |
4c9419ac | 390 | free (environ[0]); |
ef9ff3fd | 391 | environ = oldenv; |
38c1d3c4 GH |
392 | #ifdef HAVE_TZSET |
393 | /* for the possible benefit of user code linked with libguile. */ | |
b9525b92 | 394 | tzset(); |
38c1d3c4 | 395 | #endif |
b9525b92 GH |
396 | } |
397 | } | |
398 | ||
1c299a6b | 399 | SCM_DEFINE (scm_localtime, "localtime", 1, 1, 0, |
1bbd0b84 | 400 | (SCM time, SCM zone), |
1e6808ea MG |
401 | "Return an object representing the broken down components of\n" |
402 | "@var{time}, an integer like the one returned by\n" | |
403 | "@code{current-time}. The time zone for the calculation is\n" | |
404 | "optionally specified by @var{zone} (a string), otherwise the\n" | |
405 | "@code{TZ} environment variable or the system default is used.") | |
1bbd0b84 | 406 | #define FUNC_NAME s_scm_localtime |
19468eff GH |
407 | { |
408 | timet itime; | |
4edc089c | 409 | struct tm *ltptr, lt, *utc; |
19468eff GH |
410 | SCM result; |
411 | int zoff; | |
412 | char *zname = 0; | |
ef9ff3fd | 413 | char **oldenv; |
19468eff GH |
414 | int err; |
415 | ||
e4b265d8 | 416 | itime = SCM_NUM2LONG (1, time); |
38c1d3c4 GH |
417 | |
418 | /* deferring interupts is essential since a) setzone may install a temporary | |
419 | environment b) localtime uses a static buffer. */ | |
9de87eea | 420 | SCM_CRITICAL_SECTION_START; |
1bbd0b84 | 421 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
38c1d3c4 GH |
422 | #ifdef LOCALTIME_CACHE |
423 | tzset (); | |
424 | #endif | |
73ae3b4c KR |
425 | /* POSIX says localtime sets errno, but C99 doesn't say that. |
426 | Give a sensible default value in case localtime doesn't set it. */ | |
427 | errno = EINVAL; | |
4edc089c | 428 | ltptr = localtime (&itime); |
19468eff | 429 | err = errno; |
4edc089c | 430 | if (ltptr) |
19468eff | 431 | { |
4d3bacdd | 432 | const char *ptr; |
ef9ff3fd | 433 | |
43ff3170 GH |
434 | /* copy zone name before calling gmtime or restoring zone. */ |
435 | #if defined (HAVE_TM_ZONE) | |
ef9ff3fd | 436 | ptr = ltptr->tm_zone; |
43ff3170 | 437 | #elif defined (HAVE_TZNAME) |
ef9ff3fd | 438 | ptr = tzname[ (ltptr->tm_isdst == 1) ? 1 : 0 ]; |
43ff3170 GH |
439 | #else |
440 | ptr = ""; | |
b9525b92 | 441 | #endif |
4c9419ac | 442 | zname = scm_malloc (strlen (ptr) + 1); |
ef9ff3fd | 443 | strcpy (zname, ptr); |
19468eff | 444 | } |
ef9ff3fd GH |
445 | /* the struct is copied in case localtime and gmtime share a buffer. */ |
446 | if (ltptr) | |
447 | lt = *ltptr; | |
73ae3b4c KR |
448 | /* POSIX says gmtime sets errno, but C99 doesn't say that. |
449 | Give a sensible default value in case gmtime doesn't set it. */ | |
450 | errno = EINVAL; | |
ef9ff3fd GH |
451 | utc = gmtime (&itime); |
452 | if (utc == NULL) | |
453 | err = errno; | |
1bbd0b84 | 454 | restorezone (zone, oldenv, FUNC_NAME); |
b9525b92 | 455 | /* delayed until zone has been restored. */ |
19468eff | 456 | errno = err; |
4edc089c | 457 | if (utc == NULL || ltptr == NULL) |
1bbd0b84 | 458 | SCM_SYSERROR; |
19468eff GH |
459 | |
460 | /* calculate timezone offset in seconds west of UTC. */ | |
4edc089c GH |
461 | zoff = (utc->tm_hour - lt.tm_hour) * 3600 + (utc->tm_min - lt.tm_min) * 60 |
462 | + utc->tm_sec - lt.tm_sec; | |
463 | if (utc->tm_year < lt.tm_year) | |
19468eff | 464 | zoff -= 24 * 60 * 60; |
4edc089c | 465 | else if (utc->tm_year > lt.tm_year) |
19468eff | 466 | zoff += 24 * 60 * 60; |
4edc089c | 467 | else if (utc->tm_yday < lt.tm_yday) |
19468eff | 468 | zoff -= 24 * 60 * 60; |
4edc089c | 469 | else if (utc->tm_yday > lt.tm_yday) |
19468eff | 470 | zoff += 24 * 60 * 60; |
1c299a6b | 471 | |
4edc089c | 472 | result = filltime (<, zoff, zname); |
9de87eea | 473 | SCM_CRITICAL_SECTION_END; |
c291b588 LC |
474 | |
475 | free (zname); | |
19468eff GH |
476 | return result; |
477 | } | |
1bbd0b84 | 478 | #undef FUNC_NAME |
19468eff | 479 | |
45198ffb KR |
480 | /* tm_zone is normally a pointer, not an array within struct tm, so we might |
481 | have to worry about the lifespan of what it points to. The posix specs | |
482 | don't seem to say anything about this, let's assume here that tm_zone | |
483 | will be a constant and therefore no protection or anything is needed | |
484 | until we copy it in filltime(). */ | |
485 | ||
1c299a6b | 486 | SCM_DEFINE (scm_gmtime, "gmtime", 1, 0, 0, |
1bbd0b84 | 487 | (SCM time), |
1e6808ea MG |
488 | "Return an object representing the broken down components of\n" |
489 | "@var{time}, an integer like the one returned by\n" | |
490 | "@code{current-time}. The values are calculated for UTC.") | |
1bbd0b84 | 491 | #define FUNC_NAME s_scm_gmtime |
19468eff GH |
492 | { |
493 | timet itime; | |
45198ffb | 494 | struct tm bd_buf, *bd_time; |
d6d9e957 | 495 | const char *zname; |
19468eff | 496 | |
e4b265d8 | 497 | itime = SCM_NUM2LONG (1, time); |
45198ffb | 498 | |
73ae3b4c KR |
499 | /* POSIX says gmtime sets errno, but C99 doesn't say that. |
500 | Give a sensible default value in case gmtime doesn't set it. */ | |
501 | errno = EINVAL; | |
45198ffb KR |
502 | |
503 | #if HAVE_GMTIME_R | |
504 | bd_time = gmtime_r (&itime, &bd_buf); | |
505 | #else | |
9de87eea | 506 | SCM_CRITICAL_SECTION_START; |
19468eff | 507 | bd_time = gmtime (&itime); |
45198ffb KR |
508 | if (bd_time != NULL) |
509 | bd_buf = *bd_time; | |
9de87eea | 510 | SCM_CRITICAL_SECTION_END; |
45198ffb | 511 | #endif |
19468eff | 512 | if (bd_time == NULL) |
1bbd0b84 | 513 | SCM_SYSERROR; |
45198ffb | 514 | |
d6d9e957 | 515 | #if HAVE_STRUCT_TM_TM_ZONE |
45198ffb | 516 | zname = bd_buf.tm_zone; |
d6d9e957 KR |
517 | #else |
518 | zname = "GMT"; | |
519 | #endif | |
45198ffb | 520 | return filltime (&bd_buf, 0, zname); |
19468eff | 521 | } |
1bbd0b84 | 522 | #undef FUNC_NAME |
19468eff | 523 | |
b9525b92 GH |
524 | /* copy time components from a Scheme object to a struct tm. */ |
525 | static void | |
3eeba8d4 | 526 | bdtime2c (SCM sbd_time, struct tm *lt, int pos, const char *subr) |
19468eff | 527 | { |
4057a3e0 MV |
528 | SCM_ASSERT (scm_is_simple_vector (sbd_time) |
529 | && SCM_SIMPLE_VECTOR_LENGTH (sbd_time) == 11, | |
55a7fc62 GH |
530 | sbd_time, pos, subr); |
531 | ||
4057a3e0 MV |
532 | lt->tm_sec = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 0)); |
533 | lt->tm_min = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 1)); | |
534 | lt->tm_hour = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 2)); | |
535 | lt->tm_mday = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 3)); | |
536 | lt->tm_mon = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 4)); | |
537 | lt->tm_year = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 5)); | |
538 | lt->tm_wday = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 6)); | |
539 | lt->tm_yday = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 7)); | |
540 | lt->tm_isdst = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 8)); | |
8ab3d8a0 KR |
541 | #if HAVE_STRUCT_TM_TM_GMTOFF |
542 | lt->tm_gmtoff = - scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 9)); | |
543 | #endif | |
c7abe4f3 | 544 | #ifdef HAVE_TM_ZONE |
4057a3e0 | 545 | if (scm_is_false (SCM_SIMPLE_VECTOR_REF (sbd_time, 10))) |
55a7fc62 GH |
546 | lt->tm_zone = NULL; |
547 | else | |
4057a3e0 | 548 | lt->tm_zone = scm_to_locale_string (SCM_SIMPLE_VECTOR_REF (sbd_time, 10)); |
c7abe4f3 | 549 | #endif |
b9525b92 GH |
550 | } |
551 | ||
1c299a6b | 552 | SCM_DEFINE (scm_mktime, "mktime", 1, 1, 0, |
1bbd0b84 | 553 | (SCM sbd_time, SCM zone), |
a3c8b9fc MD |
554 | "@var{bd-time} is an object representing broken down time and @code{zone}\n" |
555 | "is an optional time zone specifier (otherwise the TZ environment variable\n" | |
556 | "or the system default is used).\n\n" | |
a8eac221 | 557 | "Returns a pair: the car is a corresponding\n" |
a3c8b9fc | 558 | "integer time value like that returned\n" |
a8eac221 | 559 | "by @code{current-time}; the cdr is a broken down time object, similar to\n" |
a3c8b9fc | 560 | "as @var{bd-time} but with normalized values.") |
1bbd0b84 | 561 | #define FUNC_NAME s_scm_mktime |
b9525b92 GH |
562 | { |
563 | timet itime; | |
564 | struct tm lt, *utc; | |
565 | SCM result; | |
566 | int zoff; | |
567 | char *zname = 0; | |
ef9ff3fd | 568 | char **oldenv; |
b9525b92 GH |
569 | int err; |
570 | ||
661ae7ab | 571 | scm_dynwind_begin (0); |
cc95e00a | 572 | |
1bbd0b84 | 573 | bdtime2c (sbd_time, <, SCM_ARG1, FUNC_NAME); |
edea856c | 574 | #if HAVE_STRUCT_TM_TM_ZONE |
661ae7ab | 575 | scm_dynwind_free ((char *)lt.tm_zone); |
edea856c | 576 | #endif |
19468eff | 577 | |
661ae7ab | 578 | scm_dynwind_critical_section (SCM_BOOL_F); |
9291479f | 579 | |
1bbd0b84 | 580 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
38c1d3c4 GH |
581 | #ifdef LOCALTIME_CACHE |
582 | tzset (); | |
583 | #endif | |
19468eff | 584 | itime = mktime (<); |
73ae3b4c KR |
585 | /* POSIX doesn't say mktime sets errno, and on glibc 2.3.2 for instance it |
586 | doesn't. Force a sensible value for our error message. */ | |
587 | err = EINVAL; | |
19468eff | 588 | |
b9525b92 GH |
589 | if (itime != -1) |
590 | { | |
4d3bacdd | 591 | const char *ptr; |
ef9ff3fd | 592 | |
43ff3170 GH |
593 | /* copy zone name before calling gmtime or restoring the zone. */ |
594 | #if defined (HAVE_TM_ZONE) | |
ef9ff3fd | 595 | ptr = lt.tm_zone; |
43ff3170 | 596 | #elif defined (HAVE_TZNAME) |
ef9ff3fd | 597 | ptr = tzname[ (lt.tm_isdst == 1) ? 1 : 0 ]; |
43ff3170 GH |
598 | #else |
599 | ptr = ""; | |
b9525b92 | 600 | #endif |
4c9419ac | 601 | zname = scm_malloc (strlen (ptr) + 1); |
ef9ff3fd | 602 | strcpy (zname, ptr); |
b9525b92 | 603 | } |
ef9ff3fd GH |
604 | |
605 | /* get timezone offset in seconds west of UTC. */ | |
73ae3b4c KR |
606 | /* POSIX says gmtime sets errno, but C99 doesn't say that. |
607 | Give a sensible default value in case gmtime doesn't set it. */ | |
fa0198bf | 608 | errno = EINVAL; |
ef9ff3fd GH |
609 | utc = gmtime (&itime); |
610 | if (utc == NULL) | |
611 | err = errno; | |
612 | ||
1bbd0b84 | 613 | restorezone (zone, oldenv, FUNC_NAME); |
b9525b92 GH |
614 | /* delayed until zone has been restored. */ |
615 | errno = err; | |
616 | if (utc == NULL || itime == -1) | |
1bbd0b84 | 617 | SCM_SYSERROR; |
b9525b92 | 618 | |
19468eff GH |
619 | zoff = (utc->tm_hour - lt.tm_hour) * 3600 + (utc->tm_min - lt.tm_min) * 60 |
620 | + utc->tm_sec - lt.tm_sec; | |
621 | if (utc->tm_year < lt.tm_year) | |
622 | zoff -= 24 * 60 * 60; | |
623 | else if (utc->tm_year > lt.tm_year) | |
624 | zoff += 24 * 60 * 60; | |
625 | else if (utc->tm_yday < lt.tm_yday) | |
626 | zoff -= 24 * 60 * 60; | |
627 | else if (utc->tm_yday > lt.tm_yday) | |
628 | zoff += 24 * 60 * 60; | |
629 | ||
b9bd8526 | 630 | result = scm_cons (scm_from_long (itime), |
19468eff | 631 | filltime (<, zoff, zname)); |
c291b588 | 632 | free (zname); |
cc95e00a | 633 | |
661ae7ab | 634 | scm_dynwind_end (); |
19468eff | 635 | return result; |
0f2d19dd | 636 | } |
1bbd0b84 | 637 | #undef FUNC_NAME |
0f2d19dd | 638 | |
38c1d3c4 | 639 | #ifdef HAVE_TZSET |
1c299a6b | 640 | SCM_DEFINE (scm_tzset, "tzset", 0, 0, 0, |
1bbd0b84 | 641 | (void), |
a3c8b9fc MD |
642 | "Initialize the timezone from the TZ environment variable\n" |
643 | "or the system default. It's not usually necessary to call this procedure\n" | |
644 | "since it's done automatically by other procedures that depend on the\n" | |
645 | "timezone.") | |
1bbd0b84 | 646 | #define FUNC_NAME s_scm_tzset |
0f2d19dd | 647 | { |
19468eff GH |
648 | tzset(); |
649 | return SCM_UNSPECIFIED; | |
0f2d19dd | 650 | } |
1bbd0b84 | 651 | #undef FUNC_NAME |
38c1d3c4 | 652 | #endif /* HAVE_TZSET */ |
0f2d19dd | 653 | |
a1ec6916 | 654 | SCM_DEFINE (scm_strftime, "strftime", 2, 0, 0, |
1bbd0b84 | 655 | (SCM format, SCM stime), |
5cd87f55 KR |
656 | "Return a string which is broken-down time structure @var{stime}\n" |
657 | "formatted according to the given @var{format} string.\n" | |
658 | "\n" | |
659 | "@var{format} contains field specifications introduced by a\n" | |
660 | "@samp{%} character. See @ref{Formatting Calendar Time,,, libc,\n" | |
661 | "The GNU C Library Reference Manual}, or @samp{man 3 strftime},\n" | |
662 | "for the available formatting.\n" | |
663 | "\n" | |
664 | "@lisp\n" | |
665 | "(strftime \"%c\" (localtime (current-time)))\n" | |
666 | "@result{} \"Mon Mar 11 20:17:43 2002\"\n" | |
667 | "@end lisp\n" | |
668 | "\n" | |
669 | "If @code{setlocale} has been called (@pxref{Locales}), month\n" | |
670 | "and day names are from the current locale and in the locale\n" | |
671 | "character set.") | |
1bbd0b84 | 672 | #define FUNC_NAME s_scm_strftime |
b9525b92 GH |
673 | { |
674 | struct tm t; | |
675 | ||
d40e1ca8 | 676 | char *tbuf; |
b9525b92 | 677 | int size = 50; |
d40e1ca8 AW |
678 | char *fmt; |
679 | char *myfmt; | |
680 | size_t len; | |
ef9ff3fd | 681 | SCM result; |
b9525b92 | 682 | |
a6d9e5ab | 683 | SCM_VALIDATE_STRING (1, format); |
1bbd0b84 | 684 | bdtime2c (stime, &t, SCM_ARG2, FUNC_NAME); |
b9525b92 | 685 | |
587a3355 MG |
686 | /* Convert string to UTF-8 so that non-ASCII characters in the |
687 | format are passed through unchanged. */ | |
d40e1ca8 | 688 | fmt = scm_to_utf8_stringn (format, &len); |
b9525b92 | 689 | |
a15e6dcc MV |
690 | /* Ugly hack: strftime can return 0 if its buffer is too small, |
691 | but some valid time strings (e.g. "%p") can sometimes produce | |
692 | a zero-byte output string! Workaround is to prepend a junk | |
693 | character to the format string, so that valid returns are always | |
694 | nonzero. */ | |
4c9419ac | 695 | myfmt = scm_malloc (len+2); |
587a3355 | 696 | *myfmt = (scm_t_uint8) 'x'; |
d40e1ca8 | 697 | strncpy (myfmt + 1, fmt, len); |
587a3355 MG |
698 | myfmt[len + 1] = 0; |
699 | scm_remember_upto_here_1 (format); | |
700 | free (fmt); | |
a15e6dcc | 701 | |
4c9419ac | 702 | tbuf = scm_malloc (size); |
b8a1b29b GH |
703 | { |
704 | #if !defined (HAVE_TM_ZONE) | |
705 | /* it seems the only way to tell non-GNU versions of strftime what | |
706 | zone to use (for the %Z format) is to set TZ in the | |
707 | environment. interrupts and thread switching must be deferred | |
708 | until TZ is restored. */ | |
709 | char **oldenv = NULL; | |
ecc9f40f | 710 | SCM zone_spec = SCM_SIMPLE_VECTOR_REF (stime, 10); |
e652b54f | 711 | int have_zone = 0; |
b8a1b29b | 712 | |
ecc9f40f | 713 | if (scm_is_true (zone_spec) && scm_c_string_length (zone_spec) > 0) |
b8a1b29b GH |
714 | { |
715 | /* it's not required that the TZ setting be correct, just that | |
e652b54f GH |
716 | it has the right name. so try something like TZ=EST0. |
717 | using only TZ=EST would be simpler but it doesn't work on | |
718 | some OSs, e.g., Solaris. */ | |
719 | SCM zone = | |
ecc9f40f MV |
720 | scm_string_append (scm_list_2 (zone_spec, |
721 | scm_from_locale_string ("0"))); | |
1c299a6b | 722 | |
e652b54f | 723 | have_zone = 1; |
9de87eea | 724 | SCM_CRITICAL_SECTION_START; |
e652b54f | 725 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
b8a1b29b GH |
726 | } |
727 | #endif | |
728 | ||
38c1d3c4 | 729 | #ifdef LOCALTIME_CACHE |
b8a1b29b GH |
730 | tzset (); |
731 | #endif | |
732 | ||
69f23174 LC |
733 | /* Use `nstrftime ()' from Gnulib, which supports all GNU extensions |
734 | supported by glibc. */ | |
d40e1ca8 | 735 | while ((len = nstrftime (tbuf, size, myfmt, &t, 0, 0)) == 0) |
b8a1b29b | 736 | { |
4c9419ac | 737 | free (tbuf); |
b8a1b29b | 738 | size *= 2; |
4c9419ac | 739 | tbuf = scm_malloc (size); |
b8a1b29b GH |
740 | } |
741 | ||
742 | #if !defined (HAVE_TM_ZONE) | |
e652b54f | 743 | if (have_zone) |
b8a1b29b | 744 | { |
ecc9f40f | 745 | restorezone (zone_spec, oldenv, FUNC_NAME); |
9de87eea | 746 | SCM_CRITICAL_SECTION_END; |
b8a1b29b | 747 | } |
38c1d3c4 | 748 | #endif |
b9525b92 | 749 | } |
b8a1b29b | 750 | |
d40e1ca8 | 751 | result = scm_from_utf8_string (tbuf + 1); |
4c9419ac MV |
752 | free (tbuf); |
753 | free (myfmt); | |
168e958c KR |
754 | #if HAVE_STRUCT_TM_TM_ZONE |
755 | free ((char *) t.tm_zone); | |
756 | #endif | |
ef9ff3fd | 757 | return result; |
b9525b92 | 758 | } |
1bbd0b84 | 759 | #undef FUNC_NAME |
b9525b92 | 760 | |
f25f761d | 761 | #ifdef HAVE_STRPTIME |
a1ec6916 | 762 | SCM_DEFINE (scm_strptime, "strptime", 2, 0, 0, |
1bbd0b84 | 763 | (SCM format, SCM string), |
a8eac221 MG |
764 | "Performs the reverse action to @code{strftime}, parsing\n" |
765 | "@var{string} according to the specification supplied in\n" | |
766 | "@var{template}. The interpretation of month and day names is\n" | |
767 | "dependent on the current locale. The value returned is a pair.\n" | |
768 | "The car has an object with time components\n" | |
a3c8b9fc MD |
769 | "in the form returned by @code{localtime} or @code{gmtime},\n" |
770 | "but the time zone components\n" | |
771 | "are not usefully set.\n" | |
a8eac221 MG |
772 | "The cdr reports the number of characters from @var{string}\n" |
773 | "which were used for the conversion.") | |
1bbd0b84 | 774 | #define FUNC_NAME s_scm_strptime |
b9525b92 | 775 | { |
b9525b92 | 776 | struct tm t; |
d40e1ca8 | 777 | char *fmt, *str, *rest; |
587a3355 | 778 | size_t used_len; |
8ab3d8a0 | 779 | long zoff; |
b9525b92 | 780 | |
a6d9e5ab DH |
781 | SCM_VALIDATE_STRING (1, format); |
782 | SCM_VALIDATE_STRING (2, string); | |
b9525b92 | 783 | |
587a3355 MG |
784 | /* Convert strings to UTF-8 so that non-ASCII characters are passed |
785 | through unchanged. */ | |
d40e1ca8 AW |
786 | fmt = scm_to_utf8_string (format); |
787 | str = scm_to_utf8_string (string); | |
b9525b92 GH |
788 | |
789 | /* initialize the struct tm */ | |
790 | #define tm_init(field) t.field = 0 | |
791 | tm_init (tm_sec); | |
792 | tm_init (tm_min); | |
793 | tm_init (tm_hour); | |
794 | tm_init (tm_mday); | |
795 | tm_init (tm_mon); | |
796 | tm_init (tm_year); | |
797 | tm_init (tm_wday); | |
798 | tm_init (tm_yday); | |
8ab3d8a0 KR |
799 | #if HAVE_STRUCT_TM_TM_GMTOFF |
800 | tm_init (tm_gmtoff); | |
801 | #endif | |
b9525b92 GH |
802 | #undef tm_init |
803 | ||
03b79aa3 KR |
804 | /* GNU glibc strptime() "%s" is affected by the current timezone, since it |
805 | reads a UTC time_t value and converts with localtime_r() to set the tm | |
9de87eea | 806 | fields, hence the use of SCM_CRITICAL_SECTION_START. */ |
b9525b92 | 807 | t.tm_isdst = -1; |
9de87eea | 808 | SCM_CRITICAL_SECTION_START; |
d40e1ca8 | 809 | rest = strptime (str, fmt, &t); |
9de87eea | 810 | SCM_CRITICAL_SECTION_END; |
763313a2 | 811 | if (rest == NULL) |
73ae3b4c KR |
812 | { |
813 | /* POSIX doesn't say strptime sets errno, and on glibc 2.3.2 for | |
814 | instance it doesn't. Force a sensible value for our error | |
815 | message. */ | |
816 | errno = EINVAL; | |
587a3355 MG |
817 | scm_remember_upto_here_2 (format, string); |
818 | free (str); | |
819 | free (fmt); | |
73ae3b4c KR |
820 | SCM_SYSERROR; |
821 | } | |
b9525b92 | 822 | |
8ab3d8a0 KR |
823 | /* tm_gmtoff is set by GNU glibc strptime "%s", so capture it when |
824 | available */ | |
825 | #if HAVE_STRUCT_TM_TM_GMTOFF | |
826 | zoff = - t.tm_gmtoff; /* seconds west, not east */ | |
827 | #else | |
828 | zoff = 0; | |
829 | #endif | |
830 | ||
587a3355 | 831 | /* Compute the number of UTF-8 characters. */ |
d40e1ca8 | 832 | used_len = u8_strnlen ((scm_t_uint8*) str, rest-str); |
587a3355 MG |
833 | scm_remember_upto_here_2 (format, string); |
834 | free (str); | |
835 | free (fmt); | |
836 | ||
8ab3d8a0 | 837 | return scm_cons (filltime (&t, zoff, NULL), |
587a3355 | 838 | scm_from_signed_integer (used_len)); |
b9525b92 | 839 | } |
1bbd0b84 | 840 | #undef FUNC_NAME |
f25f761d | 841 | #endif /* HAVE_STRPTIME */ |
b9525b92 | 842 | |
0f2d19dd JB |
843 | void |
844 | scm_init_stime() | |
0f2d19dd | 845 | { |
86d31dfe | 846 | scm_c_define ("internal-time-units-per-second", |
b9bd8526 | 847 | scm_from_long (SCM_TIME_UNITS_PER_SECOND)); |
0f2d19dd | 848 | |
4a42658f AW |
849 | /* Init POSIX timers, and see if we can use them. */ |
850 | #ifdef HAVE_CLOCK_GETTIME | |
851 | if (clock_gettime (CLOCK_REALTIME, &posix_real_time_base) == 0) | |
852 | get_internal_real_time = get_internal_real_time_posix_timer; | |
853 | ||
a02a6067 | 854 | #ifdef HAVE_POSIX_CPUTIME |
4a42658f AW |
855 | { |
856 | clockid_t dummy; | |
857 | ||
858 | /* Only use the _POSIX_CPUTIME clock if it's going to work across | |
859 | CPUs. */ | |
860 | if (clock_getcpuclockid (0, &dummy) == 0 && | |
861 | clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &posix_run_time_base) == 0) | |
862 | get_internal_run_time = get_internal_run_time_posix_timer; | |
863 | else | |
864 | errno = 0; | |
865 | } | |
a02a6067 | 866 | #endif /* HAVE_POSIX_CPUTIME */ |
4a42658f AW |
867 | #endif /* HAVE_CLOCKTIME */ |
868 | ||
869 | /* If needed, init and use gettimeofday timer. */ | |
870 | #ifdef HAVE_GETTIMEOFDAY | |
871 | if (!get_internal_real_time | |
872 | && gettimeofday (&gettimeofday_real_time_base, NULL) == 0) | |
873 | get_internal_real_time = get_internal_real_time_gettimeofday; | |
874 | #endif | |
875 | ||
876 | /* Init ticks_per_second for scm_times, and use times(2)-based | |
877 | run-time timer if needed. */ | |
878 | #ifdef HAVE_TIMES | |
879 | #ifdef _SC_CLK_TCK | |
880 | ticks_per_second = sysconf (_SC_CLK_TCK); | |
0f2d19dd | 881 | #else |
4a42658f | 882 | ticks_per_second = CLK_TCK; |
0f2d19dd | 883 | #endif |
4a42658f AW |
884 | if (!get_internal_run_time) |
885 | get_internal_run_time = get_internal_run_time_times; | |
886 | #endif | |
887 | ||
888 | if (!get_internal_real_time) | |
889 | /* No POSIX timers, gettimeofday doesn't work... badness! */ | |
890 | { | |
891 | fallback_real_time_base = time (NULL); | |
892 | get_internal_real_time = get_internal_real_time_fallback; | |
893 | } | |
0f2d19dd | 894 | |
4a42658f AW |
895 | /* If we don't have a run-time timer, use real-time. */ |
896 | if (!get_internal_run_time) | |
897 | get_internal_run_time = get_internal_real_time; | |
0f2d19dd | 898 | |
876c87ce | 899 | scm_add_feature ("current-time"); |
a0599745 | 900 | #include "libguile/stime.x" |
0f2d19dd JB |
901 | } |
902 | ||
89e00824 ML |
903 | |
904 | /* | |
905 | Local Variables: | |
906 | c-file-style: "gnu" | |
907 | End: | |
908 | */ |