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10d0021609
* libc/include/time.h (tzset, _tzset_r): Added prototypes.
(strptime): Moved prototype to be within !__STRICT_ANSI__.
(_tzname, _daylight, _timezone): No long __CYGWIN__ only.
(tzname): Defined for all platforms.
(daylight, timezone): Defined only for CYGWIN.
* libc/sys/linux/machine/i386/crt0.c: Add call to tzset() after
environment set up.
* libc/stdlib/setenv_r.c (_setenv_r): Call tzset() if the TZ
environment variable is set.
* libc/time/Makefile.am: Add support for tzset.c, tzlock.c, and
tzset_r.c.
* libc/time/Makefile.in: Regenerated.
* libc/time/gmtime.c (gmtime): Changed to call gmtime_r.
* libc/time/gmtime_r.c (gmtime_r): Changed to call _mktm_r.
* libc/time/lcltime_r.c (lcltime_r): Ditto.
* libc/time/local.h: New local header file.
* libc/time/mktime.c (mktime): Add timezone support.
* libc/time/mktm_r.c: New file which is the common engine
for gmtime_r and lcltime_r. This code has timezone support.
* libc/time/strftime.c (strftime): Add %Z timezone support.
* libc/time/tzlock.c: New file containing timezone lock stubs.
* libc/time/tzset.c: New file containing tzset() routine.
* libc/time/tzset_r.c: New file containing _tzset_r and
internal routine for calculating timezone changes for specified year.
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
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FUNCTION
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<<__tz_lock>>, <<__tz_unlock>>--lock time zone global variables
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INDEX
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__tz_lock
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INDEX
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__tz_unlock
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ANSI_SYNOPSIS
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#include "local.h"
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void __tz_lock (void);
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void __tz_unlock (void);
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TRAD_SYNOPSIS
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void __tz_lock();
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void __tz_unlock();
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DESCRIPTION
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The <<tzset>> facility functions call these functions when they need
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to ensure the values of global variables. The version of these routines supplied
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in the library do not do anything. If multiple threads of execution
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can call the time functions and give up scheduling in the middle, then you
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you need to define your own versions of these functions in order to
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safely lock the time zone variables during a call. If you do not, the results
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of <<localtime>>, <<mktime>>, <<ctime>>, and <<strftime>> are undefined.
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The lock <<__tz_lock>> may not be called recursively; that is,
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a call <<__tz_lock>> will always lock all subsequent <<__tz_lock>> calls
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until the corresponding <<__tz_unlock>> call on the same thread is made.
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*/
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#include <_ansi.h>
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#include "local.h"
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_VOID
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_DEFUN_VOID (__tz_lock)
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{
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}
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_VOID
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_DEFUN_VOID (__tz_unlock)
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{
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}
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