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3baf6e8b | 1 | /* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2013 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 | |
3c61e80f | 87 | #if ! HAVE_DECL_STRPTIME |
4d3bacdd JB |
88 | extern char *strptime (); |
89 | #endif | |
90 | ||
0f2d19dd JB |
91 | #ifdef __STDC__ |
92 | # define timet time_t | |
93 | #else | |
94 | # define timet long | |
95 | #endif | |
96 | ||
eb7e1603 | 97 | |
4a42658f AW |
98 | #if SCM_SIZEOF_LONG >= 8 && defined HAVE_CLOCK_GETTIME |
99 | /* Nanoseconds on 64-bit systems with POSIX timers. */ | |
100 | #define TIME_UNITS_PER_SECOND 1000000000 | |
101 | #else | |
102 | /* Milliseconds for everyone else. */ | |
103 | #define TIME_UNITS_PER_SECOND 1000 | |
104 | #endif | |
105 | ||
106 | long scm_c_time_units_per_second = TIME_UNITS_PER_SECOND; | |
107 | ||
108 | static long | |
109 | time_from_seconds_and_nanoseconds (long s, long ns) | |
110 | { | |
111 | return s * TIME_UNITS_PER_SECOND | |
112 | + ns / (1000000000 / TIME_UNITS_PER_SECOND); | |
113 | } | |
114 | ||
115 | ||
116 | /* A runtime-selectable mechanism to choose a timing mechanism. Really | |
117 | we want to use POSIX timers, but that's not always possible. Notably, | |
118 | the user may have everything she needs at compile-time, but if she's | |
119 | running on an SMP machine without a common clock source, she can't | |
120 | use POSIX CPUTIME clocks. */ | |
121 | static long (*get_internal_real_time) (void); | |
122 | static long (*get_internal_run_time) (void); | |
123 | ||
124 | ||
125 | #ifdef HAVE_CLOCK_GETTIME | |
126 | struct timespec posix_real_time_base; | |
127 | ||
128 | static long | |
129 | get_internal_real_time_posix_timer (void) | |
130 | { | |
131 | struct timespec ts; | |
132 | clock_gettime (CLOCK_REALTIME, &ts); | |
133 | return time_from_seconds_and_nanoseconds | |
134 | (ts.tv_sec - posix_real_time_base.tv_sec, | |
135 | ts.tv_nsec - posix_real_time_base.tv_nsec); | |
136 | } | |
137 | ||
a02a6067 AW |
138 | #if defined _POSIX_CPUTIME && defined CLOCK_PROCESS_CPUTIME_ID |
139 | /* You see, FreeBSD defines _POSIX_CPUTIME but not | |
140 | CLOCK_PROCESS_CPUTIME_ID. */ | |
141 | #define HAVE_POSIX_CPUTIME 1 | |
142 | ||
4a42658f AW |
143 | struct timespec posix_run_time_base; |
144 | ||
145 | static long | |
146 | get_internal_run_time_posix_timer (void) | |
147 | { | |
148 | struct timespec ts; | |
149 | clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &ts); | |
150 | return time_from_seconds_and_nanoseconds | |
151 | (ts.tv_sec - posix_run_time_base.tv_sec, | |
152 | ts.tv_nsec - posix_run_time_base.tv_nsec); | |
153 | } | |
154 | #endif /* _POSIX_CPUTIME */ | |
155 | #endif /* HAVE_CLOCKTIME */ | |
156 | ||
157 | ||
158 | #ifdef HAVE_GETTIMEOFDAY | |
159 | struct timeval gettimeofday_real_time_base; | |
160 | ||
161 | static long | |
162 | get_internal_real_time_gettimeofday (void) | |
163 | { | |
164 | struct timeval tv; | |
165 | gettimeofday (&tv, NULL); | |
166 | return time_from_seconds_and_nanoseconds | |
167 | (tv.tv_sec - gettimeofday_real_time_base.tv_sec, | |
168 | (tv.tv_usec - gettimeofday_real_time_base.tv_usec) * 1000); | |
169 | } | |
170 | #endif | |
171 | ||
172 | ||
173 | #if defined HAVE_TIMES | |
174 | static long ticks_per_second; | |
175 | ||
176 | static long | |
177 | get_internal_run_time_times (void) | |
0f2d19dd JB |
178 | { |
179 | struct tms time_buffer; | |
180 | times(&time_buffer); | |
4a42658f AW |
181 | return (time_buffer.tms_utime + time_buffer.tms_stime) |
182 | * TIME_UNITS_PER_SECOND / ticks_per_second; | |
0f2d19dd | 183 | } |
0f2d19dd JB |
184 | #endif |
185 | ||
4a42658f AW |
186 | static timet fallback_real_time_base; |
187 | static long | |
188 | get_internal_real_time_fallback (void) | |
189 | { | |
190 | return time_from_seconds_and_nanoseconds | |
191 | ((long) time (NULL) - fallback_real_time_base, 0); | |
192 | } | |
193 | ||
1bbd0b84 | 194 | |
1c299a6b | 195 | SCM_DEFINE (scm_get_internal_real_time, "get-internal-real-time", 0, 0, 0, |
1bbd0b84 | 196 | (), |
1e6808ea MG |
197 | "Return the number of time units since the interpreter was\n" |
198 | "started.") | |
1bbd0b84 | 199 | #define FUNC_NAME s_scm_get_internal_real_time |
0f2d19dd | 200 | { |
4a42658f | 201 | return scm_from_long (get_internal_real_time ()); |
0f2d19dd | 202 | } |
1bbd0b84 GB |
203 | #undef FUNC_NAME |
204 | ||
0f2d19dd | 205 | |
f25f761d | 206 | #ifdef HAVE_TIMES |
1c299a6b | 207 | SCM_DEFINE (scm_times, "times", 0, 0, 0, |
1bbd0b84 | 208 | (void), |
1e6808ea MG |
209 | "Return an object with information about real and processor\n" |
210 | "time. The following procedures accept such an object as an\n" | |
211 | "argument and return a selected component:\n" | |
212 | "\n" | |
b380b885 MD |
213 | "@table @code\n" |
214 | "@item tms:clock\n" | |
215 | "The current real time, expressed as time units relative to an\n" | |
216 | "arbitrary base.\n" | |
217 | "@item tms:utime\n" | |
218 | "The CPU time units used by the calling process.\n" | |
219 | "@item tms:stime\n" | |
1e6808ea MG |
220 | "The CPU time units used by the system on behalf of the calling\n" |
221 | "process.\n" | |
b380b885 | 222 | "@item tms:cutime\n" |
1e6808ea MG |
223 | "The CPU time units used by terminated child processes of the\n" |
224 | "calling process, whose status has been collected (e.g., using\n" | |
225 | "@code{waitpid}).\n" | |
b380b885 | 226 | "@item tms:cstime\n" |
1e6808ea | 227 | "Similarly, the CPU times units used by the system on behalf of\n" |
b380b885 MD |
228 | "terminated child processes.\n" |
229 | "@end table") | |
1bbd0b84 | 230 | #define FUNC_NAME s_scm_times |
6afcd3b2 | 231 | { |
6afcd3b2 GH |
232 | struct tms t; |
233 | clock_t rv; | |
4a42658f | 234 | SCM factor; |
6afcd3b2 | 235 | |
00ffa0e7 | 236 | SCM result = scm_c_make_vector (5, SCM_UNDEFINED); |
6afcd3b2 GH |
237 | rv = times (&t); |
238 | if (rv == -1) | |
1bbd0b84 | 239 | SCM_SYSERROR; |
4a42658f AW |
240 | |
241 | factor = scm_quotient (scm_from_long (TIME_UNITS_PER_SECOND), | |
242 | scm_from_long (ticks_per_second)); | |
243 | ||
244 | SCM_SIMPLE_VECTOR_SET (result, 0, | |
245 | scm_product (scm_from_long (rv), factor)); | |
246 | SCM_SIMPLE_VECTOR_SET (result, 1, | |
247 | scm_product (scm_from_long (t.tms_utime), factor)); | |
248 | SCM_SIMPLE_VECTOR_SET (result, 2, | |
249 | scm_product (scm_from_long (t.tms_stime), factor)); | |
250 | SCM_SIMPLE_VECTOR_SET (result ,3, | |
251 | scm_product (scm_from_long (t.tms_cutime), factor)); | |
252 | SCM_SIMPLE_VECTOR_SET (result, 4, | |
253 | scm_product (scm_from_long (t.tms_cstime), factor)); | |
6afcd3b2 | 254 | return result; |
6afcd3b2 | 255 | } |
1bbd0b84 | 256 | #undef FUNC_NAME |
f25f761d | 257 | #endif /* HAVE_TIMES */ |
6afcd3b2 | 258 | |
1c299a6b | 259 | long |
4a42658f | 260 | scm_c_get_internal_run_time (void) |
1c299a6b | 261 | { |
4a42658f | 262 | return get_internal_run_time (); |
1c299a6b ML |
263 | } |
264 | ||
265 | SCM_DEFINE (scm_get_internal_run_time, "get-internal-run-time", 0, 0, 0, | |
1bbd0b84 | 266 | (void), |
1e6808ea MG |
267 | "Return the number of time units of processor time used by the\n" |
268 | "interpreter. Both @emph{system} and @emph{user} time are\n" | |
269 | "included but subprocesses are not.") | |
1bbd0b84 | 270 | #define FUNC_NAME s_scm_get_internal_run_time |
0f2d19dd | 271 | { |
b9bd8526 | 272 | return scm_from_long (scm_c_get_internal_run_time ()); |
0f2d19dd | 273 | } |
1bbd0b84 | 274 | #undef FUNC_NAME |
0f2d19dd | 275 | |
f40771d8 KR |
276 | /* For reference, note that current-time and gettimeofday both should be |
277 | protected against setzone/restorezone changes in another thread, since on | |
278 | DOS the system time is normally kept as local time, which means TZ | |
279 | affects the return from current-time and gettimeofday. Not sure if DJGPP | |
280 | etc actually has concurrent multi-threading, but it seems prudent not to | |
281 | make assumptions about this. */ | |
282 | ||
1c299a6b | 283 | SCM_DEFINE (scm_current_time, "current-time", 0, 0, 0, |
1bbd0b84 | 284 | (void), |
1e6808ea MG |
285 | "Return the number of seconds since 1970-01-01 00:00:00 UTC,\n" |
286 | "excluding leap seconds.") | |
1bbd0b84 | 287 | #define FUNC_NAME s_scm_current_time |
0f2d19dd | 288 | { |
19468eff GH |
289 | timet timv; |
290 | ||
9de87eea | 291 | SCM_CRITICAL_SECTION_START; |
763313a2 | 292 | timv = time (NULL); |
9de87eea | 293 | SCM_CRITICAL_SECTION_END; |
763313a2 KR |
294 | if (timv == -1) |
295 | SCM_MISC_ERROR ("current time not available", SCM_EOL); | |
b9bd8526 | 296 | return scm_from_long (timv); |
19468eff | 297 | } |
1bbd0b84 | 298 | #undef FUNC_NAME |
19468eff | 299 | |
1c299a6b | 300 | SCM_DEFINE (scm_gettimeofday, "gettimeofday", 0, 0, 0, |
1bbd0b84 | 301 | (void), |
1e6808ea MG |
302 | "Return a pair containing the number of seconds and microseconds\n" |
303 | "since 1970-01-01 00:00:00 UTC, excluding leap seconds. Note:\n" | |
304 | "whether true microsecond resolution is available depends on the\n" | |
305 | "operating system.") | |
1bbd0b84 | 306 | #define FUNC_NAME s_scm_gettimeofday |
19468eff GH |
307 | { |
308 | #ifdef HAVE_GETTIMEOFDAY | |
309 | struct timeval time; | |
310 | ||
4a42658f AW |
311 | if (gettimeofday (&time, NULL)) |
312 | SCM_SYSERROR; | |
313 | ||
b9bd8526 MV |
314 | return scm_cons (scm_from_long (time.tv_sec), |
315 | scm_from_long (time.tv_usec)); | |
19468eff | 316 | #else |
4a42658f AW |
317 | timet t = time (NULL); |
318 | if (errno) | |
319 | SCM_SYSERROR; | |
320 | else | |
321 | return scm_cons (scm_from_long ((long)t), SCM_INUM0); | |
19468eff GH |
322 | #endif |
323 | } | |
1bbd0b84 | 324 | #undef FUNC_NAME |
19468eff GH |
325 | |
326 | static SCM | |
d6d9e957 | 327 | filltime (struct tm *bd_time, int zoff, const char *zname) |
19468eff | 328 | { |
00ffa0e7 | 329 | SCM result = scm_c_make_vector (11, SCM_UNDEFINED); |
19468eff | 330 | |
4057a3e0 MV |
331 | SCM_SIMPLE_VECTOR_SET (result,0, scm_from_int (bd_time->tm_sec)); |
332 | SCM_SIMPLE_VECTOR_SET (result,1, scm_from_int (bd_time->tm_min)); | |
333 | SCM_SIMPLE_VECTOR_SET (result,2, scm_from_int (bd_time->tm_hour)); | |
334 | SCM_SIMPLE_VECTOR_SET (result,3, scm_from_int (bd_time->tm_mday)); | |
335 | SCM_SIMPLE_VECTOR_SET (result,4, scm_from_int (bd_time->tm_mon)); | |
336 | SCM_SIMPLE_VECTOR_SET (result,5, scm_from_int (bd_time->tm_year)); | |
337 | SCM_SIMPLE_VECTOR_SET (result,6, scm_from_int (bd_time->tm_wday)); | |
338 | SCM_SIMPLE_VECTOR_SET (result,7, scm_from_int (bd_time->tm_yday)); | |
339 | SCM_SIMPLE_VECTOR_SET (result,8, scm_from_int (bd_time->tm_isdst)); | |
340 | SCM_SIMPLE_VECTOR_SET (result,9, scm_from_int (zoff)); | |
341 | SCM_SIMPLE_VECTOR_SET (result,10, (zname | |
342 | ? scm_from_locale_string (zname) | |
343 | : SCM_BOOL_F)); | |
19468eff GH |
344 | return result; |
345 | } | |
346 | ||
ef9ff3fd | 347 | static char tzvar[3] = "TZ"; |
ef9ff3fd | 348 | |
38c1d3c4 GH |
349 | /* if zone is set, create a temporary environment with only a TZ |
350 | string. other threads or interrupt handlers shouldn't be allowed | |
351 | to run until the corresponding restorezone is called. hence the use | |
352 | of a static variable for tmpenv is no big deal. */ | |
ef9ff3fd | 353 | static char ** |
3eeba8d4 | 354 | setzone (SCM zone, int pos, const char *subr) |
b9525b92 | 355 | { |
ef9ff3fd | 356 | char **oldenv = 0; |
b9525b92 GH |
357 | |
358 | if (!SCM_UNBNDP (zone)) | |
359 | { | |
ef9ff3fd | 360 | static char *tmpenv[2]; |
b9525b92 | 361 | char *buf; |
7f9994d9 MV |
362 | size_t zone_len; |
363 | ||
364 | zone_len = scm_to_locale_stringbuf (zone, NULL, 0); | |
365 | buf = scm_malloc (zone_len + sizeof (tzvar) + 1); | |
366 | strcpy (buf, tzvar); | |
367 | buf[sizeof(tzvar)-1] = '='; | |
368 | scm_to_locale_stringbuf (zone, buf+sizeof(tzvar), zone_len); | |
369 | buf[sizeof(tzvar)+zone_len] = '\0'; | |
ef9ff3fd GH |
370 | oldenv = environ; |
371 | tmpenv[0] = buf; | |
372 | tmpenv[1] = 0; | |
373 | environ = tmpenv; | |
b9525b92 | 374 | } |
ef9ff3fd | 375 | return oldenv; |
b9525b92 GH |
376 | } |
377 | ||
378 | static void | |
e81d98ec | 379 | restorezone (SCM zone, char **oldenv, const char *subr SCM_UNUSED) |
b9525b92 GH |
380 | { |
381 | if (!SCM_UNBNDP (zone)) | |
382 | { | |
4c9419ac | 383 | free (environ[0]); |
ef9ff3fd | 384 | environ = oldenv; |
38c1d3c4 GH |
385 | #ifdef HAVE_TZSET |
386 | /* for the possible benefit of user code linked with libguile. */ | |
b9525b92 | 387 | tzset(); |
38c1d3c4 | 388 | #endif |
b9525b92 GH |
389 | } |
390 | } | |
391 | ||
1c299a6b | 392 | SCM_DEFINE (scm_localtime, "localtime", 1, 1, 0, |
1bbd0b84 | 393 | (SCM time, SCM zone), |
1e6808ea MG |
394 | "Return an object representing the broken down components of\n" |
395 | "@var{time}, an integer like the one returned by\n" | |
396 | "@code{current-time}. The time zone for the calculation is\n" | |
397 | "optionally specified by @var{zone} (a string), otherwise the\n" | |
398 | "@code{TZ} environment variable or the system default is used.") | |
1bbd0b84 | 399 | #define FUNC_NAME s_scm_localtime |
19468eff GH |
400 | { |
401 | timet itime; | |
4edc089c | 402 | struct tm *ltptr, lt, *utc; |
19468eff GH |
403 | SCM result; |
404 | int zoff; | |
405 | char *zname = 0; | |
ef9ff3fd | 406 | char **oldenv; |
19468eff GH |
407 | int err; |
408 | ||
e4b265d8 | 409 | itime = SCM_NUM2LONG (1, time); |
38c1d3c4 GH |
410 | |
411 | /* deferring interupts is essential since a) setzone may install a temporary | |
412 | environment b) localtime uses a static buffer. */ | |
9de87eea | 413 | SCM_CRITICAL_SECTION_START; |
1bbd0b84 | 414 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
38c1d3c4 GH |
415 | #ifdef LOCALTIME_CACHE |
416 | tzset (); | |
417 | #endif | |
73ae3b4c KR |
418 | /* POSIX says localtime sets errno, but C99 doesn't say that. |
419 | Give a sensible default value in case localtime doesn't set it. */ | |
420 | errno = EINVAL; | |
4edc089c | 421 | ltptr = localtime (&itime); |
19468eff | 422 | err = errno; |
4edc089c | 423 | if (ltptr) |
19468eff | 424 | { |
4d3bacdd | 425 | const char *ptr; |
ef9ff3fd | 426 | |
43ff3170 GH |
427 | /* copy zone name before calling gmtime or restoring zone. */ |
428 | #if defined (HAVE_TM_ZONE) | |
ef9ff3fd | 429 | ptr = ltptr->tm_zone; |
43ff3170 | 430 | #elif defined (HAVE_TZNAME) |
ef9ff3fd | 431 | ptr = tzname[ (ltptr->tm_isdst == 1) ? 1 : 0 ]; |
43ff3170 GH |
432 | #else |
433 | ptr = ""; | |
b9525b92 | 434 | #endif |
4c9419ac | 435 | zname = scm_malloc (strlen (ptr) + 1); |
ef9ff3fd | 436 | strcpy (zname, ptr); |
19468eff | 437 | } |
ef9ff3fd GH |
438 | /* the struct is copied in case localtime and gmtime share a buffer. */ |
439 | if (ltptr) | |
440 | lt = *ltptr; | |
73ae3b4c KR |
441 | /* POSIX says gmtime sets errno, but C99 doesn't say that. |
442 | Give a sensible default value in case gmtime doesn't set it. */ | |
443 | errno = EINVAL; | |
ef9ff3fd GH |
444 | utc = gmtime (&itime); |
445 | if (utc == NULL) | |
446 | err = errno; | |
1bbd0b84 | 447 | restorezone (zone, oldenv, FUNC_NAME); |
b9525b92 | 448 | /* delayed until zone has been restored. */ |
19468eff | 449 | errno = err; |
4edc089c | 450 | if (utc == NULL || ltptr == NULL) |
1bbd0b84 | 451 | SCM_SYSERROR; |
19468eff GH |
452 | |
453 | /* calculate timezone offset in seconds west of UTC. */ | |
4edc089c GH |
454 | zoff = (utc->tm_hour - lt.tm_hour) * 3600 + (utc->tm_min - lt.tm_min) * 60 |
455 | + utc->tm_sec - lt.tm_sec; | |
456 | if (utc->tm_year < lt.tm_year) | |
19468eff | 457 | zoff -= 24 * 60 * 60; |
4edc089c | 458 | else if (utc->tm_year > lt.tm_year) |
19468eff | 459 | zoff += 24 * 60 * 60; |
4edc089c | 460 | else if (utc->tm_yday < lt.tm_yday) |
19468eff | 461 | zoff -= 24 * 60 * 60; |
4edc089c | 462 | else if (utc->tm_yday > lt.tm_yday) |
19468eff | 463 | zoff += 24 * 60 * 60; |
1c299a6b | 464 | |
4edc089c | 465 | result = filltime (<, zoff, zname); |
9de87eea | 466 | SCM_CRITICAL_SECTION_END; |
c291b588 LC |
467 | |
468 | free (zname); | |
19468eff GH |
469 | return result; |
470 | } | |
1bbd0b84 | 471 | #undef FUNC_NAME |
19468eff | 472 | |
45198ffb KR |
473 | /* tm_zone is normally a pointer, not an array within struct tm, so we might |
474 | have to worry about the lifespan of what it points to. The posix specs | |
475 | don't seem to say anything about this, let's assume here that tm_zone | |
476 | will be a constant and therefore no protection or anything is needed | |
477 | until we copy it in filltime(). */ | |
478 | ||
1c299a6b | 479 | SCM_DEFINE (scm_gmtime, "gmtime", 1, 0, 0, |
1bbd0b84 | 480 | (SCM time), |
1e6808ea MG |
481 | "Return an object representing the broken down components of\n" |
482 | "@var{time}, an integer like the one returned by\n" | |
483 | "@code{current-time}. The values are calculated for UTC.") | |
1bbd0b84 | 484 | #define FUNC_NAME s_scm_gmtime |
19468eff GH |
485 | { |
486 | timet itime; | |
45198ffb | 487 | struct tm bd_buf, *bd_time; |
d6d9e957 | 488 | const char *zname; |
19468eff | 489 | |
e4b265d8 | 490 | itime = SCM_NUM2LONG (1, time); |
45198ffb | 491 | |
73ae3b4c KR |
492 | /* POSIX says gmtime sets errno, but C99 doesn't say that. |
493 | Give a sensible default value in case gmtime doesn't set it. */ | |
494 | errno = EINVAL; | |
45198ffb KR |
495 | |
496 | #if HAVE_GMTIME_R | |
497 | bd_time = gmtime_r (&itime, &bd_buf); | |
498 | #else | |
9de87eea | 499 | SCM_CRITICAL_SECTION_START; |
19468eff | 500 | bd_time = gmtime (&itime); |
45198ffb KR |
501 | if (bd_time != NULL) |
502 | bd_buf = *bd_time; | |
9de87eea | 503 | SCM_CRITICAL_SECTION_END; |
45198ffb | 504 | #endif |
19468eff | 505 | if (bd_time == NULL) |
1bbd0b84 | 506 | SCM_SYSERROR; |
45198ffb | 507 | |
d6d9e957 | 508 | #if HAVE_STRUCT_TM_TM_ZONE |
45198ffb | 509 | zname = bd_buf.tm_zone; |
d6d9e957 KR |
510 | #else |
511 | zname = "GMT"; | |
512 | #endif | |
45198ffb | 513 | return filltime (&bd_buf, 0, zname); |
19468eff | 514 | } |
1bbd0b84 | 515 | #undef FUNC_NAME |
19468eff | 516 | |
b9525b92 GH |
517 | /* copy time components from a Scheme object to a struct tm. */ |
518 | static void | |
3eeba8d4 | 519 | bdtime2c (SCM sbd_time, struct tm *lt, int pos, const char *subr) |
19468eff | 520 | { |
4057a3e0 MV |
521 | SCM_ASSERT (scm_is_simple_vector (sbd_time) |
522 | && SCM_SIMPLE_VECTOR_LENGTH (sbd_time) == 11, | |
55a7fc62 GH |
523 | sbd_time, pos, subr); |
524 | ||
4057a3e0 MV |
525 | lt->tm_sec = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 0)); |
526 | lt->tm_min = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 1)); | |
527 | lt->tm_hour = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 2)); | |
528 | lt->tm_mday = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 3)); | |
529 | lt->tm_mon = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 4)); | |
530 | lt->tm_year = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 5)); | |
531 | lt->tm_wday = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 6)); | |
532 | lt->tm_yday = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 7)); | |
533 | lt->tm_isdst = scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 8)); | |
8ab3d8a0 KR |
534 | #if HAVE_STRUCT_TM_TM_GMTOFF |
535 | lt->tm_gmtoff = - scm_to_int (SCM_SIMPLE_VECTOR_REF (sbd_time, 9)); | |
536 | #endif | |
c7abe4f3 | 537 | #ifdef HAVE_TM_ZONE |
4057a3e0 | 538 | if (scm_is_false (SCM_SIMPLE_VECTOR_REF (sbd_time, 10))) |
55a7fc62 GH |
539 | lt->tm_zone = NULL; |
540 | else | |
4057a3e0 | 541 | lt->tm_zone = scm_to_locale_string (SCM_SIMPLE_VECTOR_REF (sbd_time, 10)); |
c7abe4f3 | 542 | #endif |
b9525b92 GH |
543 | } |
544 | ||
1c299a6b | 545 | SCM_DEFINE (scm_mktime, "mktime", 1, 1, 0, |
1bbd0b84 | 546 | (SCM sbd_time, SCM zone), |
b7e64f8b BT |
547 | "@var{sbd_time} is an object representing broken down time and\n" |
548 | "@code{zone} is an optional time zone specifier (otherwise the\n" | |
549 | "TZ environment variable or the system default is used).\n" | |
550 | "\n" | |
551 | "Returns a pair: the car is a corresponding integer time value\n" | |
552 | "like that returned by @code{current-time}; the cdr is a broken\n" | |
553 | "down time object, similar to as @var{sbd_time} but with\n" | |
554 | "normalized values.") | |
1bbd0b84 | 555 | #define FUNC_NAME s_scm_mktime |
b9525b92 GH |
556 | { |
557 | timet itime; | |
558 | struct tm lt, *utc; | |
559 | SCM result; | |
560 | int zoff; | |
561 | char *zname = 0; | |
ef9ff3fd | 562 | char **oldenv; |
b9525b92 GH |
563 | int err; |
564 | ||
661ae7ab | 565 | scm_dynwind_begin (0); |
cc95e00a | 566 | |
1bbd0b84 | 567 | bdtime2c (sbd_time, <, SCM_ARG1, FUNC_NAME); |
edea856c | 568 | #if HAVE_STRUCT_TM_TM_ZONE |
661ae7ab | 569 | scm_dynwind_free ((char *)lt.tm_zone); |
edea856c | 570 | #endif |
19468eff | 571 | |
661ae7ab | 572 | scm_dynwind_critical_section (SCM_BOOL_F); |
9291479f | 573 | |
1bbd0b84 | 574 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
38c1d3c4 GH |
575 | #ifdef LOCALTIME_CACHE |
576 | tzset (); | |
577 | #endif | |
19468eff | 578 | itime = mktime (<); |
73ae3b4c KR |
579 | /* POSIX doesn't say mktime sets errno, and on glibc 2.3.2 for instance it |
580 | doesn't. Force a sensible value for our error message. */ | |
581 | err = EINVAL; | |
19468eff | 582 | |
b9525b92 GH |
583 | if (itime != -1) |
584 | { | |
4d3bacdd | 585 | const char *ptr; |
ef9ff3fd | 586 | |
43ff3170 GH |
587 | /* copy zone name before calling gmtime or restoring the zone. */ |
588 | #if defined (HAVE_TM_ZONE) | |
ef9ff3fd | 589 | ptr = lt.tm_zone; |
43ff3170 | 590 | #elif defined (HAVE_TZNAME) |
ef9ff3fd | 591 | ptr = tzname[ (lt.tm_isdst == 1) ? 1 : 0 ]; |
43ff3170 GH |
592 | #else |
593 | ptr = ""; | |
b9525b92 | 594 | #endif |
4c9419ac | 595 | zname = scm_malloc (strlen (ptr) + 1); |
ef9ff3fd | 596 | strcpy (zname, ptr); |
b9525b92 | 597 | } |
ef9ff3fd GH |
598 | |
599 | /* get timezone offset in seconds west of UTC. */ | |
73ae3b4c KR |
600 | /* POSIX says gmtime sets errno, but C99 doesn't say that. |
601 | Give a sensible default value in case gmtime doesn't set it. */ | |
fa0198bf | 602 | errno = EINVAL; |
ef9ff3fd GH |
603 | utc = gmtime (&itime); |
604 | if (utc == NULL) | |
605 | err = errno; | |
606 | ||
1bbd0b84 | 607 | restorezone (zone, oldenv, FUNC_NAME); |
b9525b92 GH |
608 | /* delayed until zone has been restored. */ |
609 | errno = err; | |
610 | if (utc == NULL || itime == -1) | |
1bbd0b84 | 611 | SCM_SYSERROR; |
b9525b92 | 612 | |
19468eff GH |
613 | zoff = (utc->tm_hour - lt.tm_hour) * 3600 + (utc->tm_min - lt.tm_min) * 60 |
614 | + utc->tm_sec - lt.tm_sec; | |
615 | if (utc->tm_year < lt.tm_year) | |
616 | zoff -= 24 * 60 * 60; | |
617 | else if (utc->tm_year > lt.tm_year) | |
618 | zoff += 24 * 60 * 60; | |
619 | else if (utc->tm_yday < lt.tm_yday) | |
620 | zoff -= 24 * 60 * 60; | |
621 | else if (utc->tm_yday > lt.tm_yday) | |
622 | zoff += 24 * 60 * 60; | |
623 | ||
b9bd8526 | 624 | result = scm_cons (scm_from_long (itime), |
19468eff | 625 | filltime (<, zoff, zname)); |
c291b588 | 626 | free (zname); |
cc95e00a | 627 | |
661ae7ab | 628 | scm_dynwind_end (); |
19468eff | 629 | return result; |
0f2d19dd | 630 | } |
1bbd0b84 | 631 | #undef FUNC_NAME |
0f2d19dd | 632 | |
38c1d3c4 | 633 | #ifdef HAVE_TZSET |
1c299a6b | 634 | SCM_DEFINE (scm_tzset, "tzset", 0, 0, 0, |
1bbd0b84 | 635 | (void), |
a3c8b9fc MD |
636 | "Initialize the timezone from the TZ environment variable\n" |
637 | "or the system default. It's not usually necessary to call this procedure\n" | |
638 | "since it's done automatically by other procedures that depend on the\n" | |
639 | "timezone.") | |
1bbd0b84 | 640 | #define FUNC_NAME s_scm_tzset |
0f2d19dd | 641 | { |
19468eff GH |
642 | tzset(); |
643 | return SCM_UNSPECIFIED; | |
0f2d19dd | 644 | } |
1bbd0b84 | 645 | #undef FUNC_NAME |
38c1d3c4 | 646 | #endif /* HAVE_TZSET */ |
0f2d19dd | 647 | |
a1ec6916 | 648 | SCM_DEFINE (scm_strftime, "strftime", 2, 0, 0, |
1bbd0b84 | 649 | (SCM format, SCM stime), |
5cd87f55 KR |
650 | "Return a string which is broken-down time structure @var{stime}\n" |
651 | "formatted according to the given @var{format} string.\n" | |
652 | "\n" | |
653 | "@var{format} contains field specifications introduced by a\n" | |
654 | "@samp{%} character. See @ref{Formatting Calendar Time,,, libc,\n" | |
655 | "The GNU C Library Reference Manual}, or @samp{man 3 strftime},\n" | |
656 | "for the available formatting.\n" | |
657 | "\n" | |
658 | "@lisp\n" | |
659 | "(strftime \"%c\" (localtime (current-time)))\n" | |
660 | "@result{} \"Mon Mar 11 20:17:43 2002\"\n" | |
661 | "@end lisp\n" | |
662 | "\n" | |
663 | "If @code{setlocale} has been called (@pxref{Locales}), month\n" | |
664 | "and day names are from the current locale and in the locale\n" | |
665 | "character set.") | |
1bbd0b84 | 666 | #define FUNC_NAME s_scm_strftime |
b9525b92 GH |
667 | { |
668 | struct tm t; | |
669 | ||
d40e1ca8 | 670 | char *tbuf; |
b9525b92 | 671 | int size = 50; |
d40e1ca8 AW |
672 | char *fmt; |
673 | char *myfmt; | |
674 | size_t len; | |
ef9ff3fd | 675 | SCM result; |
b9525b92 | 676 | |
a6d9e5ab | 677 | SCM_VALIDATE_STRING (1, format); |
1bbd0b84 | 678 | bdtime2c (stime, &t, SCM_ARG2, FUNC_NAME); |
b9525b92 | 679 | |
587a3355 MG |
680 | /* Convert string to UTF-8 so that non-ASCII characters in the |
681 | format are passed through unchanged. */ | |
d40e1ca8 | 682 | fmt = scm_to_utf8_stringn (format, &len); |
b9525b92 | 683 | |
a15e6dcc MV |
684 | /* Ugly hack: strftime can return 0 if its buffer is too small, |
685 | but some valid time strings (e.g. "%p") can sometimes produce | |
686 | a zero-byte output string! Workaround is to prepend a junk | |
687 | character to the format string, so that valid returns are always | |
688 | nonzero. */ | |
4c9419ac | 689 | myfmt = scm_malloc (len+2); |
587a3355 | 690 | *myfmt = (scm_t_uint8) 'x'; |
d40e1ca8 | 691 | strncpy (myfmt + 1, fmt, len); |
587a3355 MG |
692 | myfmt[len + 1] = 0; |
693 | scm_remember_upto_here_1 (format); | |
694 | free (fmt); | |
a15e6dcc | 695 | |
4c9419ac | 696 | tbuf = scm_malloc (size); |
b8a1b29b GH |
697 | { |
698 | #if !defined (HAVE_TM_ZONE) | |
699 | /* it seems the only way to tell non-GNU versions of strftime what | |
700 | zone to use (for the %Z format) is to set TZ in the | |
701 | environment. interrupts and thread switching must be deferred | |
702 | until TZ is restored. */ | |
703 | char **oldenv = NULL; | |
ecc9f40f | 704 | SCM zone_spec = SCM_SIMPLE_VECTOR_REF (stime, 10); |
e652b54f | 705 | int have_zone = 0; |
b8a1b29b | 706 | |
ecc9f40f | 707 | if (scm_is_true (zone_spec) && scm_c_string_length (zone_spec) > 0) |
b8a1b29b GH |
708 | { |
709 | /* it's not required that the TZ setting be correct, just that | |
e652b54f GH |
710 | it has the right name. so try something like TZ=EST0. |
711 | using only TZ=EST would be simpler but it doesn't work on | |
712 | some OSs, e.g., Solaris. */ | |
713 | SCM zone = | |
ecc9f40f MV |
714 | scm_string_append (scm_list_2 (zone_spec, |
715 | scm_from_locale_string ("0"))); | |
1c299a6b | 716 | |
e652b54f | 717 | have_zone = 1; |
9de87eea | 718 | SCM_CRITICAL_SECTION_START; |
e652b54f | 719 | oldenv = setzone (zone, SCM_ARG2, FUNC_NAME); |
b8a1b29b GH |
720 | } |
721 | #endif | |
722 | ||
38c1d3c4 | 723 | #ifdef LOCALTIME_CACHE |
b8a1b29b GH |
724 | tzset (); |
725 | #endif | |
726 | ||
69f23174 LC |
727 | /* Use `nstrftime ()' from Gnulib, which supports all GNU extensions |
728 | supported by glibc. */ | |
d40e1ca8 | 729 | while ((len = nstrftime (tbuf, size, myfmt, &t, 0, 0)) == 0) |
b8a1b29b | 730 | { |
4c9419ac | 731 | free (tbuf); |
b8a1b29b | 732 | size *= 2; |
4c9419ac | 733 | tbuf = scm_malloc (size); |
b8a1b29b GH |
734 | } |
735 | ||
736 | #if !defined (HAVE_TM_ZONE) | |
e652b54f | 737 | if (have_zone) |
b8a1b29b | 738 | { |
ecc9f40f | 739 | restorezone (zone_spec, oldenv, FUNC_NAME); |
9de87eea | 740 | SCM_CRITICAL_SECTION_END; |
b8a1b29b | 741 | } |
38c1d3c4 | 742 | #endif |
b9525b92 | 743 | } |
b8a1b29b | 744 | |
d40e1ca8 | 745 | result = scm_from_utf8_string (tbuf + 1); |
4c9419ac MV |
746 | free (tbuf); |
747 | free (myfmt); | |
168e958c KR |
748 | #if HAVE_STRUCT_TM_TM_ZONE |
749 | free ((char *) t.tm_zone); | |
750 | #endif | |
ef9ff3fd | 751 | return result; |
b9525b92 | 752 | } |
1bbd0b84 | 753 | #undef FUNC_NAME |
b9525b92 | 754 | |
f25f761d | 755 | #ifdef HAVE_STRPTIME |
a1ec6916 | 756 | SCM_DEFINE (scm_strptime, "strptime", 2, 0, 0, |
1bbd0b84 | 757 | (SCM format, SCM string), |
a8eac221 MG |
758 | "Performs the reverse action to @code{strftime}, parsing\n" |
759 | "@var{string} according to the specification supplied in\n" | |
b7e64f8b | 760 | "@var{format}. The interpretation of month and day names is\n" |
a8eac221 MG |
761 | "dependent on the current locale. The value returned is a pair.\n" |
762 | "The car has an object with time components\n" | |
a3c8b9fc MD |
763 | "in the form returned by @code{localtime} or @code{gmtime},\n" |
764 | "but the time zone components\n" | |
765 | "are not usefully set.\n" | |
a8eac221 MG |
766 | "The cdr reports the number of characters from @var{string}\n" |
767 | "which were used for the conversion.") | |
1bbd0b84 | 768 | #define FUNC_NAME s_scm_strptime |
b9525b92 | 769 | { |
b9525b92 | 770 | struct tm t; |
d40e1ca8 | 771 | char *fmt, *str, *rest; |
587a3355 | 772 | size_t used_len; |
8ab3d8a0 | 773 | long zoff; |
b9525b92 | 774 | |
a6d9e5ab DH |
775 | SCM_VALIDATE_STRING (1, format); |
776 | SCM_VALIDATE_STRING (2, string); | |
b9525b92 | 777 | |
587a3355 MG |
778 | /* Convert strings to UTF-8 so that non-ASCII characters are passed |
779 | through unchanged. */ | |
d40e1ca8 AW |
780 | fmt = scm_to_utf8_string (format); |
781 | str = scm_to_utf8_string (string); | |
b9525b92 GH |
782 | |
783 | /* initialize the struct tm */ | |
784 | #define tm_init(field) t.field = 0 | |
785 | tm_init (tm_sec); | |
786 | tm_init (tm_min); | |
787 | tm_init (tm_hour); | |
788 | tm_init (tm_mday); | |
789 | tm_init (tm_mon); | |
790 | tm_init (tm_year); | |
791 | tm_init (tm_wday); | |
792 | tm_init (tm_yday); | |
8ab3d8a0 KR |
793 | #if HAVE_STRUCT_TM_TM_GMTOFF |
794 | tm_init (tm_gmtoff); | |
795 | #endif | |
b9525b92 GH |
796 | #undef tm_init |
797 | ||
03b79aa3 KR |
798 | /* GNU glibc strptime() "%s" is affected by the current timezone, since it |
799 | reads a UTC time_t value and converts with localtime_r() to set the tm | |
9de87eea | 800 | fields, hence the use of SCM_CRITICAL_SECTION_START. */ |
b9525b92 | 801 | t.tm_isdst = -1; |
9de87eea | 802 | SCM_CRITICAL_SECTION_START; |
d40e1ca8 | 803 | rest = strptime (str, fmt, &t); |
9de87eea | 804 | SCM_CRITICAL_SECTION_END; |
763313a2 | 805 | if (rest == NULL) |
73ae3b4c KR |
806 | { |
807 | /* POSIX doesn't say strptime sets errno, and on glibc 2.3.2 for | |
808 | instance it doesn't. Force a sensible value for our error | |
809 | message. */ | |
810 | errno = EINVAL; | |
587a3355 MG |
811 | scm_remember_upto_here_2 (format, string); |
812 | free (str); | |
813 | free (fmt); | |
73ae3b4c KR |
814 | SCM_SYSERROR; |
815 | } | |
b9525b92 | 816 | |
8ab3d8a0 KR |
817 | /* tm_gmtoff is set by GNU glibc strptime "%s", so capture it when |
818 | available */ | |
819 | #if HAVE_STRUCT_TM_TM_GMTOFF | |
820 | zoff = - t.tm_gmtoff; /* seconds west, not east */ | |
821 | #else | |
822 | zoff = 0; | |
823 | #endif | |
824 | ||
587a3355 | 825 | /* Compute the number of UTF-8 characters. */ |
d40e1ca8 | 826 | used_len = u8_strnlen ((scm_t_uint8*) str, rest-str); |
587a3355 MG |
827 | scm_remember_upto_here_2 (format, string); |
828 | free (str); | |
829 | free (fmt); | |
830 | ||
8ab3d8a0 | 831 | return scm_cons (filltime (&t, zoff, NULL), |
587a3355 | 832 | scm_from_signed_integer (used_len)); |
b9525b92 | 833 | } |
1bbd0b84 | 834 | #undef FUNC_NAME |
f25f761d | 835 | #endif /* HAVE_STRPTIME */ |
b9525b92 | 836 | |
0f2d19dd JB |
837 | void |
838 | scm_init_stime() | |
0f2d19dd | 839 | { |
86d31dfe | 840 | scm_c_define ("internal-time-units-per-second", |
b9bd8526 | 841 | scm_from_long (SCM_TIME_UNITS_PER_SECOND)); |
0f2d19dd | 842 | |
4a42658f AW |
843 | /* Init POSIX timers, and see if we can use them. */ |
844 | #ifdef HAVE_CLOCK_GETTIME | |
845 | if (clock_gettime (CLOCK_REALTIME, &posix_real_time_base) == 0) | |
846 | get_internal_real_time = get_internal_real_time_posix_timer; | |
847 | ||
a02a6067 | 848 | #ifdef HAVE_POSIX_CPUTIME |
4a42658f AW |
849 | { |
850 | clockid_t dummy; | |
851 | ||
852 | /* Only use the _POSIX_CPUTIME clock if it's going to work across | |
853 | CPUs. */ | |
854 | if (clock_getcpuclockid (0, &dummy) == 0 && | |
855 | clock_gettime (CLOCK_PROCESS_CPUTIME_ID, &posix_run_time_base) == 0) | |
856 | get_internal_run_time = get_internal_run_time_posix_timer; | |
857 | else | |
858 | errno = 0; | |
859 | } | |
a02a6067 | 860 | #endif /* HAVE_POSIX_CPUTIME */ |
4a42658f AW |
861 | #endif /* HAVE_CLOCKTIME */ |
862 | ||
863 | /* If needed, init and use gettimeofday timer. */ | |
864 | #ifdef HAVE_GETTIMEOFDAY | |
865 | if (!get_internal_real_time | |
866 | && gettimeofday (&gettimeofday_real_time_base, NULL) == 0) | |
867 | get_internal_real_time = get_internal_real_time_gettimeofday; | |
868 | #endif | |
869 | ||
870 | /* Init ticks_per_second for scm_times, and use times(2)-based | |
871 | run-time timer if needed. */ | |
872 | #ifdef HAVE_TIMES | |
873 | #ifdef _SC_CLK_TCK | |
874 | ticks_per_second = sysconf (_SC_CLK_TCK); | |
0f2d19dd | 875 | #else |
4a42658f | 876 | ticks_per_second = CLK_TCK; |
0f2d19dd | 877 | #endif |
4a42658f AW |
878 | if (!get_internal_run_time) |
879 | get_internal_run_time = get_internal_run_time_times; | |
880 | #endif | |
881 | ||
882 | if (!get_internal_real_time) | |
883 | /* No POSIX timers, gettimeofday doesn't work... badness! */ | |
884 | { | |
885 | fallback_real_time_base = time (NULL); | |
886 | get_internal_real_time = get_internal_real_time_fallback; | |
887 | } | |
0f2d19dd | 888 | |
4a42658f AW |
889 | /* If we don't have a run-time timer, use real-time. */ |
890 | if (!get_internal_run_time) | |
891 | get_internal_run_time = get_internal_real_time; | |
0f2d19dd | 892 | |
876c87ce | 893 | scm_add_feature ("current-time"); |
a0599745 | 894 | #include "libguile/stime.x" |
0f2d19dd JB |
895 | } |
896 | ||
89e00824 ML |
897 | |
898 | /* | |
899 | Local Variables: | |
900 | c-file-style: "gnu" | |
901 | End: | |
902 | */ |