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(scm_current_time, scm_gettimeofday): Add a comment about

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setzone/restorezone protection for DOS.
This commit is contained in:
Kevin Ryde 2004-01-03 22:25:24 +00:00
parent ec76b8f94f
commit f40771d883
1 changed files with 8 additions and 1 deletions
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9
libguile/stime.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003 Free Software Foundation, Inc.
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2003, 2004 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -180,6 +180,13 @@ SCM_DEFINE (scm_get_internal_run_time, "get-internal-run-time", 0, 0, 0,
}
#undef FUNC_NAME
/* For reference, note that current-time and gettimeofday both should be
protected against setzone/restorezone changes in another thread, since on
DOS the system time is normally kept as local time, which means TZ
affects the return from current-time and gettimeofday. Not sure if DJGPP
etc actually has concurrent multi-threading, but it seems prudent not to
make assumptions about this. */
SCM_DEFINE (scm_current_time, "current-time", 0, 0, 0,
(void),
"Return the number of seconds since 1970-01-01 00:00:00 UTC,\n"